阅读说明：本技术 利用有效裂缝进行储层连通性分析的方法和装置 (Method and apparatus for reservoir connectivity analysis using effective fractures ) 是由 周俊峰 王宏斌 姚清洲 罗新生 石小茜 祝渭平 金保中 于 2020-11-19 设计创作，主要内容包括：本发明提供的利用有效裂缝进行储层连通性分析的方法和装置,该方法包括：获取测井资料、地震资料；根据所述测井资料分析有效裂缝分布方位；基于所述有效裂缝分布方位,采用分方位地震裂缝预测技术对有效裂缝进行预测得到有效裂缝预测结果；基于所述测井资料、所述地震资料进行孔隙度反演得到有效储层预测结果；根据有效裂缝预测结果和所述有效储层预测结果判断储层连通性,通过分析并预测起沟通储集体作用的有效裂缝,提高缝洞单元划分精度。(The invention provides a method and a device for reservoir connectivity analysis by using effective fractures, wherein the method comprises the following steps: acquiring logging data and seismic data; analyzing the effective crack distribution direction according to the logging information; based on the effective crack distribution azimuth, predicting the effective cracks by adopting an azimuth-divided seismic crack prediction technology to obtain an effective crack prediction result; performing porosity inversion based on the logging data and the seismic data to obtain an effective reservoir prediction result; and judging the connectivity of the reservoir according to the effective fracture prediction result and the effective reservoir prediction result, and improving the dividing precision of the fracture-cave unit by analyzing and predicting the effective fractures which play a role in communicating with the reservoir body.)

1. A method for reservoir connectivity analysis using effective fractures, comprising:

acquiring logging data and seismic data;

analyzing effective crack distribution directions according to the logging data;

based on the effective crack distribution azimuth, predicting the effective cracks by adopting an azimuth-divided seismic crack prediction technology to obtain an effective crack prediction result;

performing porosity inversion based on the logging data and the seismic data to obtain an effective reservoir prediction result;

and judging the connectivity of the reservoir according to the effective fracture prediction result and the effective reservoir prediction result.

2. The method for reservoir connectivity analysis with active fractures according to claim 1, further comprising:

and dividing the slot hole unit according to the connectivity of the reservoir.

3. The method for reservoir connectivity analysis with active fractures according to claim 1, wherein the well log data comprises: stratigraphic dip angle data and imaging logging data;

analyzing effective fracture distribution orientations according to the logging data, comprising:

carrying out ground stress analysis on the formation dip angle data to obtain a maximum main stress direction;

obtaining crack opening and closing states according to the imaging logging information;

and analyzing the effective crack distribution direction according to the direction of the maximum main stress and the crack opening and closing state.

4. The method of claim 1, wherein determining reservoir connectivity based on effective fracture predictions and the effective reservoir predictions comprises:

fusing the effective fracture prediction results and the effective reservoir prediction results;

judging the contact relation between the effective fracture and the reservoir according to the fusion result;

and judging the connectivity of the reservoir according to the contact relation.

5. An apparatus for reservoir connectivity analysis using effective fractures, comprising:

the data acquisition module is used for acquiring logging data and seismic data;

the effective crack analysis module is used for analyzing the effective crack distribution direction according to the logging data;

the azimuth-dividing prediction module is used for predicting the effective cracks by adopting an azimuth-dividing seismic crack prediction technology based on the effective crack distribution azimuth to obtain effective crack prediction results;

the porosity inversion module is used for carrying out porosity inversion on the basis of the logging data and the seismic data to obtain an effective reservoir prediction result;

and the connectivity judgment module is used for judging the connectivity of the reservoir according to the effective fracture prediction result and the effective reservoir prediction result.

6. The apparatus for reservoir connectivity analysis with active fractures according to claim 5, further comprising:

and the slot and hole unit dividing module is used for dividing slot and hole units according to the connectivity of the reservoir.

7. The apparatus for reservoir connectivity analysis with active fractures according to claim 5, wherein the well log data comprises: stratigraphic dip angle data and imaging logging data;

the effective fracture analysis module includes:

the ground stress analysis unit is used for carrying out ground stress analysis on the formation dip angle logging information to obtain a maximum main stress direction;

the fracture state evaluation unit is used for obtaining the fracture opening and closing states according to the imaging logging information;

and the effective crack analysis unit is used for analyzing the effective crack distribution direction according to the direction of the maximum main stress and the opening and closing state of the crack.

8. The apparatus for performing reservoir connectivity analysis using effective fractures according to claim 5, wherein the connectivity determination module comprises:

a fusion unit for fusing the effective fracture prediction result and the effective reservoir prediction result;

the contact relation judging unit is used for judging the contact relation between the effective fracture and the reservoir according to the fusion result;

and the connectivity judgment unit is used for judging the connectivity of the reservoir according to the contact relation.

9. 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 using effective fractures for reservoir connectivity analysis of any of claims 1 to 4.

10. 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 reservoir connectivity analysis with effective fractures as claimed in any one of claims 1 to 4.

Technical Field

The invention relates to the technical field of carbonate reservoir development, in particular to a method and a device for reservoir connectivity analysis by using effective cracks.

Background

The judgment of the connectivity between reservoirs has important significance for the development of carbonate reservoirs, and the connectivity between wells can be determined by adopting dynamic connectivity analysis, specifically comprising a reservoir pressure trend analysis method, an interwell production interference analysis method, a fluid property difference analysis method, an interwell interference well testing method, a tracer method and the like. Reservoirs outside the well control range need to have their connectivity predicted by seismic data and the like.

Dunheng beams (Dunheng beams, etc., carbonate oil and gas reservoir fracture-cave unit multidisciplinary comprehensive division method research-taking tower wood basin ground wheel ancient 11 well region as an example, marine oil and gas geology 2013,18(2):72-78) proposes that two main factors influencing connectivity are reservoirs and fractures, reservoir and fracture prediction under dynamic connectivity constraint is carried out, and finally, a multidisciplinary method is comprehensively applied to determine fracture-cave unit boundaries, so that a set of complete fracture-cave unit division technology is formed, and reservoir connectivity analysis is realized. And (3) carrying out quantitative description on large-scale fracture-cave aggregates of Ordovician carbonate rock in Talima basin (Yangpo flight, etc.), optimizing fracture attribute threshold values by using production dynamics and FMI (data acquisition, 2013,25 (6): 89-94) and correcting the connectivity of the geometric model to obtain a final fracture-cave unit model and realize reservoir connectivity analysis.

The two methods both use the idea of combining dynamic state and static state to divide the slot hole unit, and although a certain effect is achieved, the two methods have the common problems that: before the earthquake attribute is used for predicting the cracks, whether the cracks are effective or not is not considered, all the cracks are made to participate in connectivity analysis, and the accuracy of connectivity analysis combination and the dividing precision of the crack hole units are influenced.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a method and a device for performing reservoir connectivity analysis by using effective fractures, electronic equipment and a computer-readable storage medium, which are used for analyzing and predicting the effective fractures for communicating with a reservoir body, improving the partitioning precision of a fracture-cave unit and at least partially solving the problems in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme:

in a first aspect, a method for reservoir connectivity analysis using effective fractures is provided, comprising:

acquiring logging data and seismic data;

analyzing the effective crack distribution direction according to the logging information;

based on the effective crack distribution azimuth, predicting the effective cracks by adopting an azimuth-divided seismic crack prediction technology to obtain an effective crack prediction result;

performing porosity inversion based on the logging data and the seismic data to obtain an effective reservoir prediction result;

and judging the connectivity of the reservoir according to the effective fracture prediction result and the effective reservoir prediction result.

Further, the method for reservoir connectivity analysis using effective fractures further comprises:

and dividing the slot hole unit according to the connectivity of the reservoir.

Further, the well log data comprises: stratigraphic dip angle data and imaging logging data;

analyzing effective fracture distribution orientations according to the logging data, comprising:

carrying out ground stress analysis on the formation dip angle logging information to obtain a maximum main stress direction;

obtaining crack opening and closing states according to the imaging logging information;

and analyzing effective cracks according to the direction of the maximum main stress and the opening and closing states of the cracks.

Further, the determining reservoir connectivity according to the effective fracture prediction result and the effective reservoir prediction result includes:

fusing the effective fracture prediction results and the effective reservoir prediction results;

judging the contact relation between the effective fracture and the reservoir according to the fusion result;

and judging the connectivity of the reservoir according to the contact relation.

In a second aspect, an apparatus for reservoir connectivity analysis using effective fractures is provided, comprising:

the data acquisition module is used for acquiring logging data and seismic data;

the effective crack analysis module is used for analyzing the effective crack distribution direction according to the logging data;

the azimuth-dividing prediction module is used for predicting the effective cracks by adopting an azimuth-dividing seismic crack prediction technology based on the effective crack distribution azimuth to obtain effective crack prediction results;

the porosity inversion module is used for carrying out porosity inversion on the basis of the logging data and the seismic data to obtain an effective reservoir prediction result;

and the connectivity judgment module is used for judging the connectivity of the reservoir according to the effective fracture prediction result and the effective reservoir prediction result.

Further, the apparatus for performing reservoir connectivity analysis using effective fractures further comprises:

and the slot and hole unit dividing module is used for dividing slot and hole units according to the connectivity of the reservoir.

Further, the well log data comprises: stratigraphic dip angle data and imaging logging data;

the effective fracture analysis module includes:

the ground stress analysis unit is used for carrying out ground stress analysis on the formation dip angle logging information to obtain a maximum main stress direction;

the fracture state evaluation unit is used for obtaining the fracture opening and closing states according to the imaging logging information;

and the effective crack analysis unit is used for analyzing the effective crack distribution direction according to the direction of the maximum main stress and the opening and closing state of the crack.

Further, the connectivity determining module includes:

a fusion unit for fusing the effective fracture prediction result and the effective reservoir prediction result;

the contact relation judging unit is used for judging the contact relation between the effective fracture and the reservoir according to the fusion result;

and the connectivity judgment unit is used for judging the connectivity of the reservoir according to the contact relation.

In a third aspect, an electronic device is provided, which includes a memory, a processor, and a computer program stored on the memory and executable on the processor, and the processor when executing the program implements the steps of the method for reservoir connectivity analysis using effective fractures described above.

In a fourth aspect, a computer readable storage medium is provided, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method for reservoir connectivity analysis with effective fractures as described above.

The invention provides a method and a device for reservoir connectivity analysis by using effective fractures, wherein the method comprises the following steps: acquiring logging data and seismic data; analyzing effective crack distribution directions according to the logging data; based on the effective crack distribution azimuth, predicting the effective cracks by adopting an azimuth-divided seismic crack prediction technology to obtain an effective crack prediction result; performing porosity inversion based on the logging data and the seismic data to obtain an effective reservoir prediction result; and judging the connectivity of the reservoir according to the effective fracture prediction result and the effective reservoir prediction result, and improving the dividing precision of the fracture-cave unit by analyzing and predicting the effective fractures which play a role in communicating with the reservoir body.

In order to make the aforementioned and other objects, features and advantages of the invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be 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 application, and other drawings can be obtained by those skilled in the art without inventive work. In the drawings:

FIG. 1 is a schematic diagram of an architecture between a server S1 and a client device B1 according to an embodiment of the present invention;

FIG. 2 is a flow diagram of a method for reservoir connectivity analysis with active fractures in an embodiment of the present invention;

FIG. 3 is the effective fracture prediction results;

FIG. 4 shows a comparison of azimuthal and omnidirectional fracture predictions;

FIG. 5 illustrates valid reservoir prediction results;

FIG. 6 is a flow chart illustrating a method of reservoir connectivity analysis with active fractures in an embodiment of the present invention;

fig. 7 shows the specific steps of step S200 in the embodiment of the present invention;

FIG. 8 is a graph showing the maximum principal stress and effective fracture distribution in Umber 2 area in an embodiment of the present invention;

FIG. 9 illustrates a single slot communication pattern for the slotted body;

FIG. 10 illustrates a slot body multiple slot communication pattern

Fig. 11 shows the specific steps of step S500 in the embodiment of the present invention;

FIG. 12 illustrates a schematic diagram of connectivity analysis in an embodiment of the invention;

FIG. 13 shows the result of dividing a slot-hole cell in an embodiment of the present invention;

FIG. 14 shows a plan view of all fracture predictions for YM2 work zones;

FIG. 15 shows a plan view of effective crack prediction of YM2 work area

FIG. 16 shows an active reservoir;

FIG. 17 illustrates the effect of effective fracture fusion with the reservoir;

fig. 18 shows a slot-hole cell partitioned by the technique provided by an embodiment of the present invention.

FIG. 19 is a block diagram one of the structures of an apparatus for reservoir connectivity analysis using active fractures in an embodiment of the present invention;

FIG. 20 is a block diagram two of the architecture of an apparatus for reservoir connectivity analysis with active fractures in an embodiment of the present invention;

FIG. 21 shows a block diagram of an effective fracture analysis module in an embodiment of the invention;

FIG. 22 is a block diagram showing the structure of a connectivity judging module in the embodiment of the present invention;

fig. 23 is a block diagram of an electronic device according to an embodiment of the invention.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort shall fall within the protection scope of the present application.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention 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 the like) having computer-usable program code embodied therein.

It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of this application and the above-described drawings, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

In the prior art, before the cracks are predicted by using the seismic attributes, whether the cracks are effective or not is not considered, all the cracks are involved in connectivity analysis, and the accuracy of connectivity analysis combination and the dividing precision of a crack hole unit are influenced.

In order to at least partially solve the technical problems in the prior art, embodiments of the present invention provide a method for performing reservoir connectivity analysis using effective fractures, which improves accuracy of dividing a fracture-cavity unit by analyzing and predicting effective fractures that serve to communicate with a reservoir.

In view of the above, the present application provides an apparatus for reservoir connectivity analysis using effective fractures, which may be a server S1, see fig. 1, where the server S1 may be communicatively connected to at least one client device B1, the client device B1 may transmit logging data, seismic data, etc. to the server S1, and the server S1 may receive the logging data, seismic data, etc. online. The server S1 may perform preprocessing on the acquired logging data, seismic data, etc. online or offline, and analyze the effective fracture distribution azimuth according to the logging data; based on the effective crack distribution azimuth, predicting the effective cracks by adopting an azimuth-divided seismic crack prediction technology to obtain an effective crack prediction result; performing porosity inversion based on the logging data and the seismic data to obtain an effective reservoir prediction result; and judging the connectivity of the reservoir according to the effective fracture prediction result and the effective reservoir prediction result. The server S1 may then send the reservoir connectivity analysis results online to the client device B1. The client device B1 may receive the reservoir connectivity analysis results online.

It is understood that the client device B1 may include a smart phone, a tablet electronic device, a network set-top box, a portable computer, a desktop computer, a Personal Digital Assistant (PDA), a vehicle-mounted device, a smart wearable device, etc. Wherein, intelligence wearing equipment can include intelligent glasses, intelligent wrist-watch, intelligent bracelet etc..

In practical applications, the reservoir connectivity analysis may be performed on the server S1 side as described above, i.e., the architecture shown in fig. 1, or all operations may be performed in the client device B1, and the client device B1 may be directly connected to the database server S2. The specific implementation may be selected according to the processing capability of the client device B1, the limitation of the user usage scenario, and the like. This is not a limitation of the present application. If all operations are performed in the client device B1, the client device B1 may further include a processor for performing specific processing of reservoir connectivity analysis.

The server and the client device may communicate using any suitable network protocol, including network protocols not yet developed at the filing date of this application. The network protocol may include, for example, a TCP/IP protocol, a UDP/IP protocol, an HTTP protocol, an HTTPS protocol, or the like. Of course, the network Protocol may also include, for example, an RPC Protocol (Remote Procedure Call Protocol), a REST Protocol (Representational State Transfer Protocol), and the like used above the above Protocol.

FIG. 2 is a flow diagram of a method for reservoir connectivity analysis with active fractures in an embodiment of the present invention; as shown in fig. 2, the method for reservoir connectivity analysis using effective fractures may include the following:

step S100: acquiring logging data and seismic data;

the logging data comprise sound waves, density, stratum inclination angles, imaging logging and the like, and the logging data, the seismic data and the like are all existing data acquired in the carbonate reservoir development process.

Step S200: analyzing effective crack distribution directions according to the logging data;

the well wall collapse direction can be judged according to a well diameter curve and a polar plate azimuth angle curve provided by stratigraphic dip logging, so that the ground stress direction is obtained. Nowadays, the ground stress has a close relationship with the opening and permeability of the crack. In a classical smooth, straight and two-infinite-length parallel plate fracture seepage model, the permeability is in direct proportion to the cubic power of the fracture opening, so that the opening has obvious influence on the seepage capability of the fracture, whether the current fracture opening can be correctly predicted directly determines the effectiveness of the fracture, namely, an effective fracture can be analyzed by analyzing the opening, and an ineffective fracture is screened out, so that the fracture prediction precision is improved, the subsequent data processing amount is reduced, and the analysis speed is improved.

Step S300: based on the effective crack distribution azimuth, predicting the effective cracks by adopting an azimuth-divided seismic crack prediction technology to obtain an effective crack prediction result, and referring to fig. 3;

if the omnibearing seismic crack prediction is directly adopted without considering whether the crack is effective or not, the result comprises an effective crack and an ineffective crack, and the dividing precision of the fracture-cave unit is influenced.

By adopting the azimuth-dividing seismic crack prediction technology and adding direction control, the cracks in a specific azimuth can be finely depicted, after the distribution azimuth of the effective cracks is determined, the cracks can be pertinently identified by adopting the technology, and referring to fig. 4, the comparison between the azimuth-dividing and omnibearing crack prediction results is shown, and the accuracy of crack prediction can be obviously improved by adopting azimuth-dividing prediction.

Step S400: and performing porosity inversion based on the logging data and the seismic data to obtain an effective reservoir prediction result, and referring to fig. 5.

Step S500: and judging the connectivity of the reservoir according to the effective fracture prediction result and the effective reservoir prediction result.

By adopting the technical scheme, the thinking is more scientific and reasonable based on effective fracture analysis and predicted reservoir connectivity analysis; the azimuth-based crack prediction technology can effectively predict cracks with specific distribution characteristics, and is higher in precision.

In an alternative embodiment, referring to fig. 6, the method for performing reservoir connectivity analysis using effective fractures may further include the following:

step S600: and dividing the slot hole unit according to the connectivity of the reservoir.

Wherein the connected reservoirs are divided into one slot-hole unit.

By adopting the technical scheme, the slot and hole unit division can be realized with high precision and low cost.

In an alternative embodiment, referring to fig. 7, this step S200 may include the following:

step S210: carrying out ground stress analysis on the formation dip angle logging information to obtain a maximum main stress direction;

wherein, the present principal stress direction is determined according to the ground stress analysis, and the present principal stress direction comprises: a direction of maximum principal stress, a direction of minimum principal stress, and a direction of intermediate principal stress.

Step S220: obtaining crack opening and closing states according to the imaging logging information;

step S230: and analyzing the effective crack distribution direction according to the direction of the maximum main stress and the crack opening and closing state.

Specifically, the current principal stress direction is determined based on geostress analysis, and the distribution azimuth of the effective fracture is analyzed in combination with imaging log data.

Namely: based on the stress direction and fracture permeability, the distribution characteristics of the effective fractures are determined, i.e., it is known which set is an effective fracture and which set is an ineffective fracture.

The applicant has shown, in a large number of studies: the ground stress has a close relationship with the opening and permeability of the crack. The current opening degree of the crack is inversely proportional to the normal stress borne by the surface of the crack, namely, the larger the normal stress borne by the surface of the crack is, the higher the closing degree of the crack is. Wherein, the crack distributed nearly parallel to the direction of the maximum principal stress is in a tensile state, the opening degree is maximum, and the permeability is also maximum; the opening degree and permeability of the crack oblique to the maximum main pressure stress direction of the stress field are inferior, and the opening degree and permeability are deteriorated along with the increase of the intersection angle; the crack approximately vertical to the maximum main pressure stress direction of the stress field is in a squeezing state, and the crack has the minimum opening, the minimum permeability and the worst connectivity. FIG. 8 is a graph showing the maximum principal stress and effective fracture distribution in Umber 2 area in an example of the present invention. In the embodiment of the invention, the distribution direction of the effective cracks is judged according to the relationship between the direction of the maximum main stress and the opening and closing states of the cracks.

Wherein, the connectivity of the fractures between the reservoirs is determined by the effectiveness of the fractures between the reservoirs, if both fractures are effective fractures, the two reservoirs are divided into a slot unit, the fracture communication pattern between the slot units is shown in fig. 9 and 10, and fig. 9 shows the single slot communication pattern of the slot unit; fig. 10 shows a plurality of slot communication patterns of the slot body.

In an alternative embodiment, referring to fig. 11, this step S500 may include the following:

step S510: fusing the effective fracture prediction results and the effective reservoir prediction results;

step S520: judging the contact relation between the effective fracture and the reservoir according to the fusion result;

step S530: and judging the connectivity of the reservoir according to the contact relation.

Fig. 12 shows a schematic diagram of a principle of connectivity analysis in the embodiment of the present invention, which is automatically implemented by software.

It is worth to be noted that, after the connectivity analysis is completed, the connected reservoirs are divided into one slot and hole unit, and the result of dividing the slot and hole unit is shown in fig. 13.

Specifically, the current principal stress direction can be determined according to geostress analysis, and the distribution characteristics of effective fractures can be determined by combining data analysis such as imaging logging, core, thin slices and the like.

In order to verify the technical effect of the method, the method is applied to two actual production blocks (Yingmai 2 and Hara-Ha pond areas) of the Tarim oil field, and good effect is obtained through reservoir connectivity analysis and fracture-cave unit division, so that actual well location deployment is guided. The technology is a core technology for continuous 6-year high and stable yield of carbonate reservoirs in Yingmai 2 areas, and is also one of key technologies for quickly realizing the construction of 100-million-ton capacity in Hara pond areas.

Effective crack analysis:

the Yingmai 2 three-dimensional reserve area is located at the back-oblique high position and mainly develops NW direction and NE direction to two groups of cracks. Through the stress analysis of the key well at present (see fig. 8), the stress direction of the reserve area of Yingmai 2 at present is determined to be the near NE direction, so that the NW direction fracture opening degree is minimum, the connectivity is worst, the NE direction fracture opening degree is maximum, and the connectivity is best. Meanwhile, through imaging logging data analysis, the NW-oriented fracture is basically in a closed state, and the opening of the NE-oriented fracture is good. Therefore, the effective cracks in the local area are mainly distributed in the NE direction.

And (3) effective crack earthquake prediction:

after the NE-oriented cracks are determined to be effective cracks, the NE-oriented cracks are identified by adopting the azimuth-divided seismic crack prediction technology, and the precision of the NE-oriented cracks is greatly improved compared with that of the original omnibearing prediction result (see fig. 14 and 15).

Dividing a slot hole unit:

the method comprises the steps of obtaining longitudinal wave impedance by means of geostatistical inversion, calculating a porosity body according to the relationship between the wave impedance and the porosity, and obtaining an effective reservoir by taking the porosity lower limit value of the effective reservoir explained by well logging as a threshold value, wherein the effective reservoir is shown in figure 16. And finally, fusing the effective fractures and the reservoirs, referring to fig. 17, judging the connectivity of the effective fractures and the reservoirs according to the contact relationship between the effective fractures and the reservoirs, and completing reservoir connectivity analysis and dividing the fracture-cavity units (referring to fig. 18).

Based on the same inventive concept, the embodiments of the present application further provide an apparatus for performing reservoir connectivity analysis using effective fractures, which can be used to implement the method described in the above embodiments, as described in the following embodiments. Because the principle of solving the problems by using the device for analyzing the reservoir connectivity by using the effective fractures is similar to that of the method, the implementation of the device for analyzing the reservoir connectivity by using the effective fractures can be referred to the implementation of the method, and repeated details are not repeated. As used hereinafter, the term "unit" or "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.

Fig. 19 is a first block diagram of an apparatus for reservoir connectivity analysis using active fractures in an embodiment of the present invention. As shown in fig. 19, the apparatus for performing reservoir connectivity analysis using effective fractures specifically includes: the system comprises a data acquisition module 10, an effective crack analysis module 20, a sub-azimuth prediction module 30, a porosity inversion module 40 and a connectivity judgment module 50.

The data acquisition module 10 acquires logging data and seismic data;

the effective crack analysis module 20 analyzes the effective crack distribution azimuth according to the logging data;

the azimuth-dividing prediction module 30 predicts the effective cracks by adopting an azimuth-dividing seismic crack prediction technology based on the effective crack distribution azimuth to obtain effective crack prediction results;

the porosity inversion module 40 performs porosity inversion based on the logging data and the seismic data to obtain an effective reservoir prediction result;

the connectivity determination module 50 determines reservoir connectivity based on the effective fracture prediction and the effective reservoir prediction.

By adopting the azimuth-divided seismic crack prediction technology and adding direction control, the cracks in a specific azimuth can be finely depicted, after the distribution azimuth of the effective cracks is determined, the cracks can be pertinently identified by adopting the technology, and the accuracy of crack prediction is improved.

In an alternative embodiment, referring to fig. 20, the apparatus for performing reservoir connectivity analysis using effective fractures may further include: and a slot and hole unit dividing module 60 for dividing slot and hole units according to the connectivity of the reservoir.

In an alternative embodiment, referring to fig. 21, the effective fracture analysis module includes: a ground stress analysis unit 21, a crack state evaluation unit 22, and an effective crack analysis unit 23.

The ground stress analysis unit 21 is used for carrying out ground stress analysis on the formation dip angle data to obtain a maximum main stress direction;

the fracture state evaluation unit 22 is used for obtaining the fracture opening and closing states according to the imaging logging information;

and the effective crack analysis unit 23 is used for analyzing an effective crack distribution direction according to the maximum principal stress direction and the crack opening and closing state.

In an alternative embodiment, referring to fig. 22, the connectivity determining module includes: a fusion unit 51, a contact relation determination unit 52, and a connectivity determination unit 53.

A fusion unit 51 for fusing the effective fracture prediction result and the effective reservoir prediction result;

a contact relation determination unit 52 that determines a contact relation between the effective fracture and the reservoir according to the fusion result;

and a connectivity judging unit 53 for judging the connectivity of the reservoir according to the contact relationship.

The apparatuses, modules or units illustrated in the above embodiments may be implemented by a computer chip or an entity, or implemented by a product with certain functions. A typical implementation device is an electronic device, which may be, for example, a personal computer, a laptop computer, a cellular telephone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.

In a typical example, the electronic device specifically includes a memory, a processor, and a computer program stored on the memory and executable on the processor, and the processor when executing the program implements the steps of the method for reservoir connectivity analysis using effective fractures as described above.

Referring now to FIG. 23, shown is a schematic diagram of an electronic device 600 suitable for use in implementing embodiments of the present application.

As shown in fig. 23, the electronic apparatus 600 includes a Central Processing Unit (CPU)601 that can perform various appropriate works and processes according to a program stored in a Read Only Memory (ROM)602 or a program loaded from a storage section 608 into a Random Access Memory (RAM) 603. In the RAM603, various programs and data necessary for the operation of the system 600 are also stored. The CPU601, ROM602, and RAM603 are connected to each other via a bus 604. An input/output (I/O) interface 605 is also connected to bus 604.

The following components are connected to the I/O interface 605: an input portion 606 including a keyboard, a mouse, and the like; an output portion 607 including a display such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker; a storage section 608 including a hard disk and the like; and a communication section 609 including a network interface card such as a LAN card, a modem, or the like. The communication section 609 performs communication processing via a network such as the internet. The driver 610 is also connected to the I/O interface 605 as needed. A removable medium 611 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 610 as necessary, so that a computer program read out therefrom is mounted as necessary on the storage section 608.

In particular, according to an embodiment of the present invention, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, an embodiment of the invention includes a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method for reservoir connectivity analysis with effective fractures described above.

In such an embodiment, the computer program may be downloaded and installed from a network through the communication section 609, and/or installed from the removable medium 611.

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.

For convenience of description, the above devices are described as being divided into various units by function, and are described separately. Of course, the functionality of the units may be implemented in one or more software and/or hardware when implementing the present application.

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.

It is also noted that 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, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The application 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 application 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 basically 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 above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.