阅读说明：本技术 基于高速砾岩的构造高点偏移的校正方法及装置 (High-speed conglomerate-based structural high-point offset correction method and device ) 是由 刘永涛 吴德明 周义军 毕明波 王秀珍 宋旭阳 于 2020-05-12 设计创作，主要内容包括：本发明提供了一种基于高速砾岩的构造高点偏移的校正方法及装置,基于高速砾岩的构造高点偏移的校正方法包括：根据预先识别的高速砾岩下伏的地质构造,建立包含所述高速砾岩以及所述地质构造的地质模型；根据所述地质模型的几何关系判断所述地质构造的构造高点是否发生偏移,以生成判断结果；根据所述判断结果生成所述地质构造的速度场,以对所述构造高点进行校正。本发明所提供的基于高速砾岩的构造高点偏移的校正方法及装置极大地提高了高速砾岩下伏构造圈闭的落实精度。(The invention provides a method and a device for correcting the high point offset of a structure based on high-speed conglomerate, wherein the method for correcting the high point offset of the structure based on the high-speed conglomerate comprises the following steps: building a geological model containing high-speed conglomerates and a geological structure underlying the high-speed conglomerates according to a pre-identified geological structure; judging whether the high points of the geological structure deviate or not according to the geometric relationship of the geological model to generate a judgment result; and generating a speed field of the geological structure according to the judgment result so as to correct the structure high point. The method and the device for correcting the high point offset of the structure based on the high-speed conglomerate greatly improve the implementation precision of the trap of the high-speed conglomerate underlying structure.)

1. A high-speed conglomerate-based correction method for high point offset of a structure is characterized by comprising the following steps:

building a geological model containing high-speed conglomerates and a geological structure underlying the high-speed conglomerates according to a pre-identified geological structure;

judging whether the high points of the geological structure deviate or not according to the geometric relationship of the geological model to generate a judgment result;

and generating a speed field of the geological structure according to the judgment result so as to correct the structure high point.

2. The calibration method of claim 1, wherein the step of identifying the geological formation underlying the high velocity conglomerate includes:

identifying the geological formation underlying the high velocity conglomerate based on the stacking velocities and the migration velocities in the seismic waves.

3. The method of correcting of claim 1 wherein said building a geological model containing said high speed conglomerates and said geological formation based on a previously identified geological formation underlying said high speed conglomerates comprises:

according to the distribution characteristics of the high-speed conglomerates under the depth domain, establishing a wedge-shaped geological model of the conglomerates;

according to the distribution characteristics of the geological structure under the depth domain, an equilateral triangle geological model of the geological structure is established;

and establishing the geological model containing the high-speed conglomerate and the geological structure according to the wedge-shaped geological model and the triangular geological model.

4. The method for correcting according to claim 3, wherein the judging whether the tectonic high point of the geological structure is deviated according to the geometric relationship of the geological model to generate a judgment result comprises:

and judging whether the high construction point of the geological structure deviates or not according to the position of the point of the equilateral triangle geological model and the horizontal distance between the point and the high-speed conglomerate pinch-out boundary.

5. The method of correcting of claim 1, wherein the generating a velocity field of the geological formation based on the determination to correct the formation highpoints comprises:

and when the judgment result is that the high points of the structure deviate, generating a speed field of the geological structure by using a fine speed field building method so as to correct the high points of the structure.

6. A high-speed conglomerate-based correction device for high-point offset in a formation, comprising:

a geological model establishing unit, which is used for establishing a geological model containing the high-speed conglomerate and the geological structure according to the geological structure of the high-speed conglomerate underlayer which is identified in advance;

the judgment result generation unit is used for judging whether the structure high point of the geological structure deviates or not according to the geometric relationship of the geological model so as to generate a judgment result;

and the high construction point correcting unit is used for generating a speed field of the geological structure according to the judgment result so as to correct the high construction points.

7. The correction device of claim 6, further comprising:

a geological structure identification unit for identifying the step of geological structure of the high-speed conglomerate underlayer, in particular for identifying the geological structure of the high-speed conglomerate underlayer according to the superposition velocity and the migration velocity in the seismic waves.

8. The correction device according to claim 6, wherein the geological model building unit comprises:

the wedge-shaped geological model building module is used for building a wedge-shaped geological model of the conglomerate according to the distribution characteristics of the high-speed conglomerate in the depth domain;

the triangular geological model building module is used for building an equilateral triangular geological model of the geological structure according to the distribution characteristics of the geological structure under the depth domain;

and the geological model building module is used for building the geological model containing the high-speed conglomerate and the geological structure according to the wedge-shaped geological model and the triangular geological model.

9. The calibration apparatus according to claim 8, wherein the determination result generating unit is specifically configured to determine whether the tectonic height point of the geological structure is shifted according to the position of the point of the equilateral triangular geological model and the horizontal distance between the point and the high-speed conglomerate pinch-out boundary.

10. The correction device according to claim 6, characterized in that the formation high point correction unit is specifically adapted to generate a velocity field of the geological formation using a fine velocity field building method for correcting the formation high points.

11. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the program performs the steps of the method of any one of claims 1 to 5 for correcting high-speed conglomerate-based formation high-point offset.

12. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method for high-speed conglomerate-based formation high-point offset correction according to any one of claims 1 to 5.

Technical Field

The invention relates to the field of petroleum exploration, in particular to the technical field of petroleum geophysical exploration, and particularly relates to a method and a device for correcting high-point structural offset based on high-speed conglomerate.

Background

Shallow alluvial fans and underlying formation traps are a common type of deposit-formation combination in the marginal zones of hydrocarbon-bearing basins. Since the underlying structure trap is often a very important oil and gas storage structure, the form of the structure trap is finely described, and the accurate implementation of the high point position of the structure trap is a main target of oil and gas exploration. The comprehensive processing and interpretation of seismic data is used to implement the closure of the underlying structure, which is one of the most effective methods. However, due to the existence of high-speed conglomerates in the shallow alluvial fan body, the deformation of the structure trap form and the deviation of the structure high point are often caused, so that the structure is inaccurate to implement, and the risk of oil-gas exploration is increased.

The combination of various data, the fine description of the spreading characteristics of the high-speed conglomerate and the establishment of the fine velocity field are the most effective technical method for eliminating the influence of the high-speed conglomerate on the trapping of the underlying structure at the present stage. The Lidelchun and the like (2012) realize the joint interpretation of the electric method and the seismic data on the same platform by three-dimensional electric method data inversion processing, finely describe the distribution characteristics of conglomerates of different layers and provide an important basis for the implementation of the structure trap under salt; the number of the easy-to-go elements (2013) and the like is considered to calculate the speed of the special lithologic body through well data, and then the speed is filled into a speed spectrum to establish a high-precision three-dimensional speed field, so that a more accurate structural diagram can be obtained; the Hounkang and the like (2016) comprehensively utilize data such as well logging, earthquake, electric methods and the like, effectively identify space distribution characteristics of each phase zone and internal lithology of the alluvial fan, and lay a foundation for implementation of underlying structural trap; von schuki et al (2016) fuse seismic data with resistivity data, perform joint seismic interpretation on the fused body, establish a sequence stratigraphic framework fully considering high-speed conglomerates, utilize the model to constrain wave impedance inversion, obtain a longitudinal wave velocity body as a velocity field of prestack depth migration, and then refine the form and high point position of the under-salt structure trap of the falling-solid reservoir. Liu Yong Tao et al (2018) propose a method for identifying high-speed conglomerates in a multi-well area and judging high point migration of an underlying structure through multi-method seismic interpretation and identification under various geological backgrounds.

The technical method focuses on fine depiction of distribution characteristics of the high-speed conglomerate (providing basis for speed field building); some methods consider the distribution prediction of high-speed conglomerates and the speed field construction as a whole, directly change the mapping into a map to carry out the closure and implementation of the underlying structure, and obtain good application effect in the oil-gas exploration practice. However, some of the technical methods neglect the effective connection between the high-speed conglomerate distribution prediction and the speed field building, because the high-speed conglomerates with different spreading characteristics have different influence degrees on the trapping of the underlying structure. Some consider mainly in the area of the multiple wells, the identification of the high-speed conglomerate of the important reference well data, at present in the area of few wells, the concrete influence of the time domain high-speed conglomerate wedge stratum imaging on the actual depth domain underburden structure high point, in the actual seismic data, the wedge stratum formed by the high-speed conglomerate in the time domain has a difference in the influence on the underburden depth domain structure, in some cases, only the distortion of the structure trap form is caused; in some cases, the structure trap state and the structure high point position change simultaneously. On the basis of the fine prediction of the time domain high-speed conglomerate distribution characteristics in seismic exploration, the influence degree of the high-speed conglomerates on the true underlying structure trapping form of the depth domain is judged quickly and accurately, and the method plays a vital role in the selection of a later seismic data interpretation speed field building method, the reasonable control of speed field building precision and the depth domain high point judgment.

Disclosure of Invention

Aiming at the problems in the prior art, the method and the device for correcting the structural high point offset based on the high-speed conglomerate greatly improve the implementation precision of the high-speed conglomerate underlying structure trap, so that after the underlying structure trap is implemented again, exploration is broken through, and huge economic benefits are obtained. Meanwhile, the regained underlying structure trap shape also promotes the recognization of the accumulation rules of the areas, and provides important basis for the new round of well position deployment.

In order to solve the technical problems, the invention provides the following technical scheme:

in a first aspect, the present invention provides a method for correcting high point offset of a high-speed conglomerate-based structure, including:

building a geological model containing high-speed conglomerates and a geological structure underlying the high-speed conglomerates according to a pre-identified geological structure;

judging whether the high points of the geological structure deviate or not according to the geometric relationship of the geological model to generate a judgment result;

and generating a speed field of the geological structure according to the judgment result so as to correct the structure high point.

In one embodiment, the step of identifying the geological formation of the high velocity conglomerate underburden comprises:

identifying the geological formation underlying the high velocity conglomerate based on the stacking velocities and the migration velocities in the seismic waves.

In one embodiment, the building a geological model containing high speed conglomerates and the geological structure based on a previously identified geological structure underlying the high speed conglomerates comprises:

according to the distribution characteristics of the high-speed conglomerates under the depth domain, establishing a wedge-shaped geological model of the conglomerates;

according to the distribution characteristics of the geological structure under the depth domain, an equilateral triangle geological model of the geological structure is established;

and establishing the geological model containing the high-speed conglomerate and the geological structure according to the wedge-shaped geological model and the triangular geological model.

In one embodiment, the determining whether a tectonic high point of the geological structure is deviated according to a geometric relationship of the geological model to generate a determination result includes:

and judging whether the high construction point of the geological structure deviates or not according to the position of the point of the equilateral triangle geological model and the horizontal distance between the point and the high-speed conglomerate pinch-out boundary.

In one embodiment, the generating a velocity field of the geological structure according to the determination result to correct the structure high point includes:

and when the judgment result is that the high points of the structure deviate, generating a speed field of the geological structure by using a fine speed field building method so as to correct the high points of the structure.

In a second aspect, the present invention provides a high-speed conglomerate-based correction device for high-point offset of a formation, the device comprising:

a geological model establishing unit, which is used for establishing a geological model containing the high-speed conglomerate and the geological structure according to the geological structure of the high-speed conglomerate underlayer which is identified in advance;

the judgment result generation unit is used for judging whether the structure high point of the geological structure deviates or not according to the geometric relationship of the geological model so as to generate a judgment result;

and the high construction point correcting unit is used for generating a speed field of the geological structure according to the judgment result so as to correct the high construction points.

In one embodiment, the high-speed conglomerate-based high-point offset correction device further comprises:

a geological structure identification unit for identifying the step of geological structure of the high-speed conglomerate underlayer, in particular for identifying the geological structure of the high-speed conglomerate underlayer according to the superposition velocity and the migration velocity in the seismic waves.

In one embodiment, the geological model building unit comprises:

the wedge-shaped geological model building module is used for building a wedge-shaped geological model of the conglomerate according to the distribution characteristics of the high-speed conglomerate in the depth domain;

the triangular geological model building module is used for building an equilateral triangular geological model of the geological structure according to the distribution characteristics of the geological structure under the depth domain;

and the geological model building module is used for building the geological model containing the high-speed conglomerate and the geological structure according to the wedge-shaped geological model and the triangular geological model.

In an embodiment, the determination result generating unit is specifically configured to determine whether a structural high point of the geological structure deviates according to a position of a point of the equilateral triangle geological model and a horizontal distance between the point and the high-speed conglomerate pinch-out boundary.

In an embodiment, the formation high point correction unit is specifically configured to generate a velocity field of the geological formation by using a fine velocity field building method, so as to correct the formation high point.

In a third aspect, the present invention provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the method for high-speed conglomerate-based formation high-point offset correction when executing the program.

In a fourth aspect, the present invention provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of a method of correcting high point offset of a formation based on high speed conglomerate.

As can be seen from the above description, the method and the device for correcting the deviation of the high-speed conglomerate-based structural high point provided by the embodiment of the invention establish the simplified geological models of the high-speed conglomerate and the underlying geological structure thereof, judge whether the structural high point of the geological structure deviates according to the geometric relationship between the geological models of the high-speed conglomerate and the underlying geological structure, and finally correct the structural high point of the geological structure according to the judgment result. The invention overcomes the defect that the influence of high-speed conglomerate on the trapping of the underlying structure is neglected to be considered in the past, such as: multiple exploratory well drilling errors in the depressed forestomach and Pengyang areas of Ordos basin on a garage vehicle. The implementation precision of the high-speed conglomerate underlying structure trap is greatly improved, and after the underlying structure trap is implemented again, exploration is broken through, and huge economic benefits are obtained. Meanwhile, the regained underlying structure trap shape also promotes the recognization of the accumulation rules of the areas, and provides important basis for the new round of well position deployment.

In summary, the present invention provides a method for rapidly determining whether the high points of the distribution of the high-speed conglomerate and the subjacent structure trap deviate in the area with few wells, thereby providing a basis for accurately selecting the speed field building method and judging the deviation of the high points of the subjacent structure trap in the depth domain in the next step.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a first flowchart illustrating a high-speed conglomerate-based construction high-point offset calibration method according to an embodiment of the present invention;

FIG. 2 is a second schematic flow chart illustrating a high-speed conglomerate-based construction high-point offset calibration method according to an embodiment of the present invention;

FIG. 3 is a flow chart illustrating step 100 according to an embodiment of the present invention;

FIG. 4 is a flowchart of step 200 in an embodiment of the present invention;

FIG. 5 is a flowchart of step 300 in an embodiment of the present invention;

FIG. 6 is a schematic flow chart of a high-speed conglomerate-based high-point offset correction method in an exemplary embodiment of the present invention;

FIG. 7 is a technical flow chart of a high-speed conglomerate-based construction high-point offset correction method in a specific application example of the invention;

FIG. 8 is a schematic diagram of the well logging and seismic response characteristics of high-speed conglomerates in Pengyang areas of the Ordos basin in an example of a particular application of the present invention;

FIG. 9 is a schematic seismic section of a horizontal laminar medium in an embodiment of the invention;

FIG. 10 is a diagram showing a horizontal laminar medium superposition velocity spectrum according to an embodiment of the present invention;

FIG. 11 is a first schematic diagram of a high velocity conglomerate seismic section in an embodiment of the present invention;

FIG. 12 is a schematic view of a velocity spectrum of a high-speed conglomerate stack in an exemplary embodiment of the present invention;

FIG. 13 is a schematic seismic section of a dipping earth formation in an embodiment of the invention;

FIG. 14 is a schematic diagram of a velocity spectrum of a dip formation stack in an example embodiment of the present invention;

FIG. 15 is a schematic diagram of a tilted formation offset velocity spectrum in an example embodiment of the present invention;

FIG. 16 is a schematic diagram of a second seismic section of high velocity conglomerate in an exemplary embodiment of the present invention;

FIG. 17 is a schematic view of a velocity spectrum of a high-speed conglomerate stack in an exemplary embodiment of the present invention;

FIG. 18 is a schematic diagram of a high velocity conglomerate offset velocity spectrum in an example embodiment of the present invention;

FIG. 19 is a plan view of the thickness of the high speed conglomerate of the chalk system in Pengyang region of Erdos basin in an example of an embodiment of the present invention;

FIG. 20 is a typical seismic reflection profile of a low-amplitude formation in Pengyu region of Ordos basin in an example of an implementation of the invention;

FIG. 21 is a schematic diagram of a geologic model structure in an exemplary embodiment of the present invention;

FIG. 22 is a geological model and forward modeling results for the region Pengyu E of Ordos basin in an embodiment of the present invention;

FIG. 23 is a plan view of the average velocity of the bottom boundary of the Jurassic system in the region of Pengyang in Ordos basin in an embodiment of the present invention;

FIG. 24 shows T's in the bottom of the Jurassic system in the region of E' erdospenyang in a specific embodiment of the present invention₀A drawing;

FIG. 25 is a view showing the bottom structure of a dwarfism in the region of Erdos Pengyang in an embodiment of the present invention;

FIG. 26 is a first schematic diagram (velocity field stacking) of seismic velocities at a high velocity conglomerate boundary in an exemplary embodiment of the present invention;

FIG. 27 is a second schematic diagram of seismic wave velocities at a high-velocity conglomerate boundary (offset velocity field) in an exemplary embodiment of the present invention;

FIG. 28 is a graph showing the seismic velocity at a high-velocity conglomerate boundary in a third embodiment of the present invention (the difference between the stacking velocity field and the migration velocity field);

FIG. 29 is a first schematic structural diagram of a high-speed conglomerate-based construction high-point deviation correction device in an embodiment of the invention;

FIG. 30 is a second schematic structural diagram of a high-speed conglomerate-based formation high-point deviation correction device in an embodiment of the invention;

FIG. 31 is a schematic diagram of the structure of a geological model creation unit in an embodiment of the present invention;

fig. 32 is a schematic structural diagram of an electronic device in an embodiment of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the invention provides a specific implementation mode of a high-point offset correction method based on high-speed conglomerate construction, and the method specifically comprises the following steps of:

step 100: a geological model is built containing the high speed conglomerates and the geological formation, based on a pre-identified geological formation underlying the high speed conglomerates.

It will be appreciated that the geological model in step 100 includes a geological model of high velocity conglomerates as well as a geological model of the geological formation underlying the high velocity conglomerates (simplifying the high velocity conglomerates into a wedge-shaped geological model and simplifying the geological formation underlying the high velocity conglomerates (e.g. trap) into an equilateral triangle geological model).

Step 200: and judging whether the high points of the geological structure deviate or not according to the geometric relationship of the geological model so as to generate a judgment result.

When the step 200 is implemented, the method specifically comprises the following steps: on the basis of the step 100, a relational expression for judging whether the high points of the geological structure deviate or not is established according to the side length and the vertex of the wedge, the side length and the vertex of the equilateral triangle and the mutual relation of the side length and the vertex of the wedge and the side length and the vertex of the equilateral triangle, and a judgment result is generated.

Step 300: and generating a speed field of the geological structure according to the judgment result so as to correct the structure high point.

Specifically, if the structural high points of the underlying geological structure deviate, a fine speed field building method capable of reflecting speed detail changes needs to be selected, so that the structural high points and the form of the trap can be better implemented; if the high points of the underlying geological structure are not deviated, a speed field building method capable of reflecting the macroscopic speed variation trend needs to be selected, so that the structure trap form can be better realized.

As can be seen from the above description, the method for correcting the deviation of the high-speed conglomerate-based structural high point provided by the embodiment of the invention establishes the simplified geological models of the high-speed conglomerate and the underlying geological structure, determines whether the structural high point of the geological structure deviates according to the geometric relationship between the geological models of the high-speed conglomerate and the underlying geological structure, and finally corrects the structural high point of the geological structure according to the determination result. The invention overcomes the defect that the influence of high-speed conglomerate on the trapping of the underlying structure is neglected to be considered in the past, such as: multiple exploratory well drilling errors in the depressed forestomach and Pengyang areas of Ordos basin on a garage vehicle. The implementation precision of the high-speed conglomerate underlying structure trap is greatly improved, and after the underlying structure trap is implemented again, exploration is broken through, and huge economic benefits are obtained. Meanwhile, the regained underlying structure trap shape also promotes the recognization of the accumulation rules of the areas, and provides important basis for the new round of well position deployment.

In an embodiment, referring to fig. 2, the method for correcting the high-point offset of the high-speed conglomerate-based formation further includes:

step 400: the step of identifying the geological formation of the high speed conglomerate underburden.

Step 400 is embodied in identifying the geological formation underlying the high velocity conglomerate based on the stacking velocities and the migration velocities in the seismic waves.

It will be appreciated that in low well areas, the presence of high velocity conglomerates may be initially determined by superimposing the overall change in the velocity spectrum. However, the superposition velocity reflects the velocity of the overlying strata divided by the cosine of the inclination angle of the strata, so that the existence of the high-speed conglomerate is judged by the abnormality of the superposition velocity, when the stratum has the inclination angle, the superposition velocity spectrum has a high-speed abnormal point, but the offset velocity information does not contain the information of the inclination angle of the strata, only the velocity of the overlying strata is included, and the offset velocity basically meets the parabolic characteristic. When high-speed conglomerates exist in the stratum, the superposition speed and the migration speed of the seismic waves are high-speed abnormal, and the high-speed conglomerates in the stratum can be judged.

In one embodiment, referring to fig. 3, step 100 specifically includes:

step 101: and establishing a wedge-shaped geological model of the conglomerate according to the distribution characteristics of the high-speed conglomerate under the depth domain.

According to the distribution characteristics of the high-speed conglomerate in the depth domain, the high-speed conglomerate is simplified into a wedge-shaped geological model.

Step 102: and establishing an equilateral triangle geological model of the geological structure according to the distribution characteristics of the geological structure under the depth domain.

The high-speed conglomerate is simplified to an equilateral triangular geological model of a low-amplitude formation according to the geological formation trapped by the underlying formation.

Step 103: and establishing the geological model containing the high-speed conglomerate and the geological structure according to the wedge-shaped geological model and the triangular geological model.

Then, the acute included angle of the wedge-shaped geological model and the acute included angle of the equilateral triangle geological model are respectively assumed. And determining the top and bottom boundaries of the high-speed conglomerate, and calculating the layer velocity of the high-speed conglomerate as a layer. The part between the bottom boundary of the high-speed conglomerate and the top boundary of the construction target layer is defined as surrounding rocks, and the surrounding rocks are used as a layer to calculate the layer velocity of the surrounding rocks.

In one embodiment, referring to fig. 4, step 200 specifically includes:

step 201: and judging whether the high construction point of the geological structure deviates or not according to the position of the point of the equilateral triangle geological model and the horizontal distance between the point and the high-speed conglomerate pinch-out boundary.

In one embodiment, referring to fig. 5, step 300 specifically includes:

step 301: and when the judgment result is that the high points of the structure deviate, generating a speed field of the geological structure by using a fine speed field building method so as to correct the high points of the structure.

It will be appreciated that the accuracy requirements for the velocity field will vary depending on whether the high points of formation of the underlying geological formation of high velocity conglomerates are offset. Therefore, the method for building the speed field is reasonably selected according to the data actually occupied by the research area. If the high points of the underlying geological structure deviate, selecting a fine speed field building method capable of reflecting speed detail change, so that the high points and the form of the geological structure can be better implemented; if the high construction point of the high-speed conglomerate underlying geological structure is not deviated, a speed field building method capable of reflecting the speed macroscopic change trend needs to be selected so as to better implement the form of the geological structure.

As can be seen from the above description, the method for correcting the deviation of the high-speed conglomerate-based structural high point provided by the embodiment of the invention establishes the simplified geological models of the high-speed conglomerate and the underlying geological structure, determines whether the structural high point of the geological structure deviates according to the geometric relationship between the geological models of the high-speed conglomerate and the underlying geological structure, and finally corrects the structural high point of the geological structure according to the determination result. The invention overcomes the defect that the influence of high-speed conglomerate on the trapping of the underlying structure is neglected to be considered in the past, such as: multiple exploratory well drilling errors in the depressed forestomach and Pengyang areas of Ordos basin on a garage vehicle. The implementation precision of the high-speed conglomerate underlying structure trap is greatly improved, and after the underlying structure trap is implemented again, exploration is broken through, and huge economic benefits are obtained. Meanwhile, the regained underlying structure trap shape also promotes the recognization of the accumulation rules of the areas, and provides important basis for the new round of well position deployment.

In summary, the present invention provides a method for rapidly determining whether the high points of the distribution of the high-speed conglomerate and the subjacent structure trap deviate in the area with few wells, thereby providing a basis for accurately selecting the speed field building method and judging the deviation of the high points of the subjacent structure trap in the depth domain in the next step.

To further illustrate the present solution, the present invention provides a specific application example of the method for correcting the structural high point offset based on the high-speed conglomerate, taking the region of pengyang in the berdos basin as an example, and the specific application example specifically includes the following contents, see fig. 6 and fig. 7.

Pengyang region of Ordos basin is located at southwest edge of basin, exploration area 10200km²The length of the two-dimensional seismic survey line is 6120km in total, the exploration degree is higher at the mouth of the exploration well 316. The chalkiness in this region develops a set of high-speed conglomerates, and the low-amplitude structure at the bottom of the dwarfism system is the main target of oil-gas exploration.

And S1, identifying high-speed conglomerates.

High velocity conglomerates may be identified by means of well logging as well as seismic. Conglomerates in Pengyang areas are characterized by low acoustic wave (AC) and high Density (DEN), and the layer velocity of the conglomerates is 4500-5500 m/s, and the density is 2.5g/cm3-2.7g/cm 3. While the bed velocity of the surrounding rock (sand-mud rock) is between 3000m/s and 4000m/s and the density is about 2.5g/cm3 (figure 8).

Because the conglomerate layer does not have the bedding of a laminated structure inside, and a relatively obvious impedance interface is lacked, the conglomerate layer mainly shows a disordered seismic reflection characteristic. The top and bottom boundaries of the conglomerate layer have distinct impedance interfaces with the surrounding rock and, therefore, appear primarily as strong amplitude trough or peak reflections.

It can be understood that under the assumption of the horizontal lamellar medium, the seismic wave stacking velocity is approximately the root mean square velocity of the formation, and the velocity trend reflected by the maximum similarity profile (seismic wave stacking velocity spectrum) is approximately parabolic, as shown in fig. 9 and 10. When the stratum is flushed into the high-speed conglomerate, the seismic velocity is obviously changed, the high-speed conglomerate can cause the root mean square velocity to be increased, so that the seismic wave stacking velocity locally has a high-speed and off-parabolic characteristic, as shown in fig. 11 and 12. In the area with few wells, the existence of the high-speed conglomerate can be preliminarily judged by the integral change of the velocity spectrum. However, since the stacking velocity reflects the velocity of the overlying strata divided by the cosine of the inclination angle of the strata, the existence of the high-speed conglomerate is judged to have ambiguity only by the abnormality of the stacking velocity, when the stratum has the inclination angle, the stacking velocity spectrum has a high-speed abnormal point, but the offset velocity information does not contain the information of the inclination angle of the strata, only the velocity of the overlying strata is included, and the offset velocity basically meets the parabolic characteristic, as shown in fig. 13-15. When high-speed conglomerates exist in the stratum, the superposition speed and the migration speed of the seismic waves are high-speed abnormal, and the high-speed conglomerates in the stratum can be judged to appear as shown in figures 16-18.

S2: and predicting the distribution condition of the high-speed conglomerate.

After the corresponding characteristics of the high-speed conglomerate on the seismic speed are known, starting from two aspects of geological analysis and seismic wave speed judgment, and finely predicting the distribution characteristics of the high-speed conglomerate in the seismic data. In geology, predicting the distribution range of the high-speed conglomerate from a macroscopic rule; on earthquake, the high speed distribution range of the stacking velocity of the seismic waves is utilized, such as the graph in FIG. 9 and the graph in FIG. 10, and the high speed distribution range of the migration velocity of the seismic waves is utilized, such as the graph in FIG. 11 and the graph in FIG. 12. And a method for calculating the difference between the two, as shown in fig. 13-15. And (3) implementing a range with a larger difference between the stacking velocity and the offset velocity, distinguishing the stacking and offset velocity difference caused by the inclination angle of the stratum and the distribution range of the high-speed conglomerate, and finely predicting the overall distribution profile and the internal structural characteristics of the high-speed conglomerate, which is shown in the figures 26-28.

Specifically to the specific application example, firstly, the macro analysis is performed by using the geological principle, the high-speed conglomerates are positioned at the fan root and the fan middle position of the alluvial fan body, and the thickness of the high-speed conglomerates is gradually reduced from the edge of the basin to the abdomen of the basin. The larger the paleotopographic height difference is, the faster the thickness of the high-speed conglomerate changes, and conversely, the slower the change of the high-speed conglomerate. The structure of Pengyang area is near south and north, and the thickness of the high-speed conglomerate gradually decreases from west to east.

Second, the well-to-seismic is combined with fine prediction. And finely calibrating the bottom boundary and the top boundary of the high-speed conglomerate, and explaining the layer positions of the bottom boundary and the top boundary according to the calibration result. And (3) predicting the pinch-out position of the high-speed conglomerate by combining well earthquake, and comprehensively delineating the distribution range of the high-speed conglomerate.

The comprehensive prediction result is as follows: the high speed conglomerate extends east-west upwards for a distance of about 19.8km, with an average thickness of 640 m and a thickness variation ranging between 0 and 1000 m (fig. 19).

S3: analysis of the underlying structure trap development characteristics.

Specifically, the type of the inner structure trap and the structure amplitude and area variation range of the structure trap are definitely researched through the analysis of the geological background of the research area and the manufacture of a known well drilling well connecting section;

in this particular example of application, the location of low amplitude structural traps on a seismic section is identified (FIG. 20). And (4) utilizing well-connecting contrast analysis to determine the area and structure amplitude of the low-amplitude structure trap. In Pengyang, a total of 23 low-amplitude structural traps were found, and the area of the low-amplitude structural traps was 0.2km2-16km 2. The construction amplitude is 30-230 m.

S4: and (5) constructing a geological model.

As shown in fig. 21, a geologic model is built, including shallow high velocity conglomerates and underlying formation traps, considered in its entirety. According to the distribution characteristics of the high-speed conglomerate in the depth domain, the high-speed conglomerate is simplified into a wedge-shaped model, and according to the structural style of the underlying structural trap, the high-speed conglomerate is simplified into an equilateral triangle model with a low-amplitude structure. Then, an acute included angle (alpha) of the wedge-shaped model and an acute included angle (beta) of the equilateral triangle model are respectively obtained. Defining top and bottom boundaries of high-speed conglomerate, using them as a layer to calculate its layer velocity (V)₁). Defining the part between the bottom boundary of the high-speed conglomerate and the top boundary of the construction target layer as a surrounding rock, and calculating the layer velocity (V) of the surrounding rock as a layer₂)。

Specifically, a geological model is built (FIG. 22) including high-velocity conglomerates and low-amplitude formation traps. By combining the analysis data, the acute included angle between the bottom boundary and the top boundary of the high-speed conglomerate is 30 degrees, the acute included angle between the closed wing part and the top part of the low-amplitude structure is 15 degrees, the layer speed of the high-speed conglomerate is 5000m/s, the layer speed of the surrounding rock is 3000m/s, and the layer speed of the low-amplitude structure target layer is 4000 m/s.

S5: and judging whether the structure high point is deviated or not.

As shown in fig. 21, it is assumed that in the depth domain model, A, B two points respectively represent the wing and the high point positions of the construction target, and the a and b line lengths respectively represent the horizontal distances between the A, B two point positions and the conglomerate pinch-out boundary. If the high point of the time domain section construction target is deviated due to the existence of the high-speed conglomerate, the high point position of the construction target can be equivalently changed from the original B point to the A point. Then it is necessary to satisfy a boundary condition that the imaging point time T of point a is in the presence of time domain high speed conglomerate_AIs smaller than the imaging point T of the original depth domain high point B in the time domain_BThe high point position corresponding to the depth domain becomes a wing part on the time domain section, and the geometrical relationship is deduced as follows:

t of time domain_A≤T_BIn time, the time domain structure high point changes, and the following inequality condition needs to be satisfied:

namely, it is

a×V₂×tgα+(a-b)×V₁×tgβ≤(a-b)×V₁×tgα+b×V₂×tgα (4)

The simplified inequality (4) yields:

if the condition of inequality (5) is satisfied, the high point of the underlying structural trap must be deviated, and the form of the structural trap must be distorted; if the condition of inequality (5) is not satisfied, the high point of the underlying structural trap is not shifted, but the morphology of the structural trap may be distorted.

In this particular example of application, the above parameters are substituted into equation (2), i.e., α is 30 °, β is 15 °, V₁＝5000m/s，V₂The condition satisfying the formula (5) is calculated to 3000 m/s. And (4) verifying by using a model forward modeling technology, wherein a forward modeling result shows that the high point position of the low-amplitude structure trap is shifted and is consistent with the judgment of the formula (5).

S6: a velocity field is constructed.

It will be appreciated that the accuracy requirements for the velocity field will vary depending on whether the underlying formation high points are offset. Therefore, the method for building the speed field is reasonably selected according to the data actually occupied by the research area. If the structural high point of the underlying structural trap deviates, a fine speed field building method capable of reflecting speed detail change needs to be selected, so that the structural high point and the form of the structural trap can be better implemented; if the structure high point of the underlying structure trap is not deviated, a speed field building method capable of reflecting the macroscopic change trend of the speed needs to be selected, so that the structure trap can be better realized.

The Pengyang area is mainly provided with two-dimensional seismic data and well drilling data. Since the high points where the high velocity conglomerate has caused the underlying formation to trap are offset, a precise velocity field needs to be established. Comprehensively considering, selecting a horizon constraint method combining well and seismic to build a velocity field, and referring to fig. 23.

As can be seen from fig. 20, the change in the plane of the velocity field substantially coincides with the change in the thickness of the high-speed conglomerate, indicating that the accuracy of the velocity field is high and can satisfy the accuracy of the structure map.

S7: the underlying build entrapment target is achieved.

After shifting to the pattern, a structural pattern of the structural target layer is produced. In the high-speed conglomerate development area, the reliability of the constructed diagram is analyzed by using the data of the actual drilling. And then implementing a new construction trap target and providing a suggested well position. Comparative analysis of the T0 plots and the structural plots at the bottom of the dwarfism family of P71 wells revealed that the high points of the underlying low-amplitude structure traps shifted westward by approximately 2km due to the influence of the high velocity conglomerates (fig. 24 and 25). The multiple exploratory wells provided were emptied early due to the impact of high velocity conglomerate dredging on the underlying formation traps. In recent years, by re-achieving the morphology of the underlying formation traps, multiple exploratory wells deployed with new formation patterns have gained industrial oil flow.

As can be seen from the above description, the method for correcting the deviation of the high-speed conglomerate-based structural high point provided by the embodiment of the invention establishes the simplified geological models of the high-speed conglomerate and the underlying geological structure, determines whether the structural high point of the geological structure deviates according to the geometric relationship between the geological models of the high-speed conglomerate and the underlying geological structure, and finally corrects the structural high point of the geological structure according to the determination result. The invention overcomes the defect that the influence of high-speed conglomerate on the trapping of the underlying structure is neglected to be considered in the past, such as: multiple exploratory well drilling errors in the depressed forestomach and Pengyang areas of Ordos basin on a garage vehicle. The implementation precision of the high-speed conglomerate underlying structure trap is greatly improved, and after the underlying structure trap is implemented again, exploration is broken through, and huge economic benefits are obtained. Meanwhile, the regained underlying structure trap shape also promotes the recognization of the accumulation rules of the areas, and provides important basis for the new round of well position deployment.

In summary, the present invention provides a method for rapidly determining whether the high points of the distribution of the high-speed conglomerate and the subjacent structure trap deviate in the area with few wells, thereby providing a basis for accurately selecting the speed field building method and judging the deviation of the high points of the subjacent structure trap in the depth domain in the next step.

Based on the same inventive concept, the embodiment of the present application further provides a high-point offset correction device based on high-speed conglomerate construction, which can be used for implementing the method described in the above embodiment, such as the following embodiment. Since the principle of solving the problem of the correction device for high-speed conglomerate-based high-point tectonic deviation is similar to that of the correction method for high-speed conglomerate-based high-point tectonic deviation, the implementation of the correction device for high-speed conglomerate-based high-point tectonic deviation can be implemented by referring to the implementation of the correction method for high-speed conglomerate-based high-point tectonic deviation, and repeated details are omitted. As used hereinafter, the term "unit" or "module" may be a combination of software and/or hardware that implements a predetermined function. While the system described in the embodiments below is preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.

An embodiment of the present invention provides a specific implementation manner of a high-speed conglomerate-based high-point formation deviation correction device, which can implement a high-speed conglomerate-based high-point formation deviation correction method, and referring to fig. 29, the high-speed conglomerate-based high-point formation deviation correction device specifically includes the following contents:

a geological model building unit 10 for building a geological model containing high-speed conglomerates and the geological structure based on the pre-identified geological structure underlying the high-speed conglomerates.

And the judgment result generation unit 20 is used for judging whether the tectonic high point of the geological structure deviates according to the geometric relationship of the geological model so as to generate a judgment result.

And a tectonic height point correction unit 30, configured to generate a velocity field of the geological structure according to the determination result, so as to correct the tectonic height point.

In one embodiment, referring to fig. 30, the high-speed conglomerate-based high-point deviation correction device further comprises:

a geological structure recognition unit 40 for the step of recognizing the geological structure underlying a high-speed conglomerate, said geological structure recognition unit being particularly adapted to recognize the geological structure underlying said high-speed conglomerate on the basis of the stacking velocity and the migration velocity in the seismic waves.

In one embodiment, referring to fig. 31, the geological model building unit 10 comprises:

the wedge-shaped geological model building module 101 is used for building a wedge-shaped geological model of the conglomerate according to the distribution characteristics of the high-speed conglomerate in the depth domain;

the triangular geological model building module 102 is used for building an equilateral triangular geological model of the geological structure according to the distribution characteristics of the geological structure under the depth domain;

a geological model building module 103, configured to build the geological model including the high-speed conglomerate and the geological structure according to the wedge-shaped geological model and the triangular geological model.

In an embodiment, the determination result generating unit is specifically configured to determine whether a structural high point of the geological structure deviates according to a position of a point of the equilateral triangle geological model and a horizontal distance between the point and the high-speed conglomerate pinch-out boundary.

In an embodiment, the formation high point correction unit is specifically configured to generate a velocity field of the geological formation by using a fine velocity field building method, so as to correct the formation high point.

As can be seen from the above description, the calibration device for high-speed conglomerate-based structural high point offset according to the embodiment of the present invention establishes simplified geological models of high-speed conglomerates and their underlying geological structures, determines whether the structural high point of the geological structure is offset according to the geometric relationship between the geological models of the high-speed conglomerates and the underlying geological structure, and finally calibrates the structural high point of the geological structure according to the determination result. The invention overcomes the defect that the influence of high-speed conglomerate on the trapping of the underlying structure is neglected to be considered in the past, such as: multiple exploratory well drilling errors in the depressed forestomach and Pengyang areas of Ordos basin on a garage vehicle. The implementation precision of the high-speed conglomerate underlying structure trap is greatly improved, and after the underlying structure trap is implemented again, exploration is broken through, and huge economic benefits are obtained. Meanwhile, the regained underlying structure trap shape also promotes the recognization of the accumulation rules of the areas, and provides important basis for the new round of well position deployment.

In summary, the present invention provides a device for rapidly determining whether the high points of the distribution of the high-speed conglomerate and the subjacent structure trap deviate in the area with few wells, so as to provide a basis for accurately selecting the speed field building method and the deviation determination of the high points of the subjacent structure trap in the depth domain.

The embodiment of the present application further provides a specific implementation manner of an electronic device, which is capable of implementing all steps in the method for correcting high-point offset of a high-speed conglomerate-based structure in the foregoing embodiment, and referring to fig. 32, the electronic device specifically includes the following contents:

a processor (processor)1201, a memory (memory)1202, a communication Interface 1203, and a bus 1204;

the processor 1201, the memory 1202 and the communication interface 1203 complete communication with each other through the bus 1204; the communication interface 1203 is configured to implement information transmission between related devices, such as a server-side device, an earthquake monitoring device, and a client device.

The processor 1201 is configured to call the computer program in the memory 1202, and the processor executes the computer program to implement all the steps of the method for correcting high-speed conglomerate-based formation high-point offset in the above-described embodiment, for example, to implement the following steps when the processor executes the computer program:

step 100: a geological model is built containing the high speed conglomerates and the geological formation, based on a pre-identified geological formation underlying the high speed conglomerates.

Step 200: and judging whether the high points of the geological structure deviate or not according to the geometric relationship of the geological model so as to generate a judgment result.

Step 300: and generating a speed field of the geological structure according to the judgment result so as to correct the structure high point.

As can be seen from the above description, the electronic device in the embodiment of the present application establishes the simplified geological models of the high-speed conglomerate and the underlying geological structure thereof, determines whether the high-structure point of the geological structure is deviated according to the geometric relationship between the two geological models, and finally corrects the high-structure point of the geological structure according to the determination result. The invention overcomes the defect that the influence of high-speed conglomerate on the trapping of the underlying structure is neglected to be considered in the past, such as: multiple exploratory well drilling errors in the depressed forestomach and Pengyang areas of Ordos basin on a garage vehicle. The implementation precision of the high-speed conglomerate underlying structure trap is greatly improved, and after the underlying structure trap is implemented again, exploration is broken through, and huge economic benefits are obtained. Meanwhile, the regained underlying structure trap shape also promotes the recognization of the accumulation rules of the areas, and provides important basis for the new round of well position deployment.

In summary, the present invention provides an electronic device for rapidly determining whether the high points of the distribution of the high-speed conglomerate and the subjacent structure trap deviate in the area with few wells, thereby providing a basis for accurately selecting the speed field building method and the deviation determination of the high points of the subjacent structure trap in the depth domain in the next step.

Embodiments of the present application also provide a computer-readable storage medium capable of implementing all the steps in the method for high-speed conglomerate-based high-point offset correction of a formation, in the above embodiments, where the computer-readable storage medium has stored thereon a computer program that, when executed by a processor, implements all the steps of the method for high-speed conglomerate-based high-point offset correction of a formation, in the above embodiments, for example, when the processor executes the computer program, the processor implements the following steps:

step 100: a geological model is built containing the high speed conglomerates and the geological formation, based on a pre-identified geological formation underlying the high speed conglomerates.

Step 200: and judging whether the high points of the geological structure deviate or not according to the geometric relationship of the geological model so as to generate a judgment result.

Step 300: and generating a speed field of the geological structure according to the judgment result so as to correct the structure high point.

As can be seen from the above description, the computer-readable storage medium in the embodiment of the present application establishes simplified geological models of the high-speed conglomerate and its underlying geological structure, determines whether the high-point of the geological structure is shifted according to the geometric relationship between the two geological models, and finally corrects the high-point of the geological structure according to the determination result. The invention overcomes the defect that the influence of high-speed conglomerate on the trapping of the underlying structure is neglected to be considered in the past, such as: multiple exploratory well drilling errors in the depressed forestomach and Pengyang areas of Ordos basin on a garage vehicle. The implementation precision of the high-speed conglomerate underlying structure trap is greatly improved, and after the underlying structure trap is implemented again, exploration is broken through, and huge economic benefits are obtained. Meanwhile, the regained underlying structure trap shape also promotes the recognization of the accumulation rules of the areas, and provides important basis for the new round of well position deployment.

In summary, the present invention provides a computer readable storage medium for rapidly determining whether the high points of the distribution of the high-speed conglomerate and the subjacent structure trap thereof are deviated in the area with few wells, thereby providing a basis for accurately selecting the speed field building method and the deviation determination of the high points of the subjacent structure trap in the depth domain in the next step.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the hardware + program class embodiment, since it is substantially similar to the method embodiment, the description is simple, and the relevant points can be referred to the partial description of the method embodiment.

The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.

Although the present application provides method steps as described in an embodiment or flowchart, additional or fewer steps may be included based on conventional or non-inventive efforts. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of orders and does not represent the only order of execution. When an actual apparatus or client product executes, it may execute sequentially or in parallel (e.g., in the context of parallel processors or multi-threaded processing) according to the embodiments or methods shown in the figures.

Although embodiments of the present description provide method steps as described in embodiments or flowcharts, more or fewer steps may be included based on conventional or non-inventive means. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of orders and does not represent the only order of execution. When an actual apparatus or end product executes, it may execute sequentially or in parallel (e.g., parallel processors or multi-threaded environments, or even distributed data processing environments) according to the method shown in the embodiment or the figures. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the presence of additional identical or equivalent elements in a process, method, article, or apparatus that comprises the recited elements is not excluded.

For convenience of description, the above devices are described as being divided into various modules by functions, and are described separately. Of course, in implementing the embodiments of the present description, the functions of each module may be implemented in one or more software and/or hardware, or a module implementing the same function may be implemented by a combination of multiple sub-modules or sub-units, and the like. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

Those skilled in the art will also appreciate that, in addition to implementing the controller as pure computer readable program code, the same functionality can be implemented by logically programming method steps such that the controller is in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Such a controller may therefore be considered as a hardware component, and the means included therein for performing the various functions may also be considered as a structure within the hardware component. Or even means for performing the functions may be regarded as being both a software module for performing the method and a structure within a hardware component.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.

Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.

As will be appreciated by one skilled in the art, embodiments of the present description may be provided as a method, system, or computer program product. Accordingly, embodiments of the present description may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present description may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and so forth) having computer-usable program code embodied therein.

The embodiments of this specification may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The described embodiments may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment. In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the specification. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above description is only an example of the embodiments of the present disclosure, and is not intended to limit the embodiments of the present disclosure. Various modifications and variations to the embodiments described herein will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present specification should be included in the scope of the claims of the embodiments of the present specification.