阅读说明：本技术 撬装式冻胶分散体生产装置及其应用 (Skid-mounted jelly dispersion production device and application thereof ) 是由 赵光 戴彩丽 刘合 杨海恩 何龙 李翔 易萍 张艳辉 于 2018-10-31 设计创作，主要内容包括：本发明涉及油田调驱领域,具体涉及撬装式冻胶分散体生产装置及其应用。按照物流的走向,该装置依次包括：射流混配系统、本体冻胶化学交联反应系统、剪切研磨系统和存储系统；所述装置还包括智能调控系统,用于对调控射流混配系统、本体冻胶化学交联反应系统、剪切研磨系统和存储系统进行调控；所述本体冻胶化学交联反应系统包括反应罐,所述反应罐中还设置有升温装置。本发明能够实现本体冻胶在中高温油藏的快速交联反应,实现多尺度冻胶分散体的规模化制备,且适用于滩涂、丘陵、海上作业平台等复杂环境的连续生产。(The invention relates to the field of oil field profile control and flooding, in particular to a skid-mounted type jelly dispersion production device and application thereof. According to the trend of commodity circulation, the device includes in proper order: the device comprises a jet flow mixing system, a body gel chemical crosslinking reaction system, a shearing and grinding system and a storage system; the device also comprises an intelligent regulation and control system which is used for regulating and controlling the regulation and control jet flow mixing system, the body gel chemical crosslinking reaction system, the shearing and grinding system and the storage system; the body gel chemical crosslinking reaction system comprises a reaction tank, and a heating device is further arranged in the reaction tank. The invention can realize the rapid crosslinking reaction of the body jelly in the medium-high temperature oil reservoir, realize the large-scale preparation of the multi-scale jelly dispersoid, and is suitable for the continuous production in complex environments such as mudflats, hills, offshore operation platforms and the like.)

1. The utility model provides a sled dress formula jelly dispersion apparatus for producing which characterized in that, according to the trend of commodity circulation, the device includes in proper order: the device comprises a jet flow mixing system (1), a body gel chemical crosslinking reaction system (2), a shearing and grinding system (3) and a storage system (4);

the mixing system (1) is used for conveying a jelly glue dispersion production raw material and liquid preparation water to the body jelly glue chemical crosslinking reaction system (2) in a jet flow mode for reaction to obtain a pre-jelly glue dispersion;

the shearing and grinding system (3) is used for receiving the pre-jelly dispersion body from the body jelly chemical crosslinking reaction system (2) so as to grind and shear the pre-jelly dispersion body to obtain the jelly dispersion body;

the storage system (4) is used for receiving and storing the jelly dispersion from the shearing and grinding system (3);

the device also comprises an intelligent regulation and control system (5) for regulating and controlling the regulation and control jet flow mixing system (1), the body gel chemical crosslinking reaction system (2), the shearing and grinding system (3) and the storage system (4);

the body jelly chemical crosslinking reaction system (2) comprises a reaction tank (21), and a heating device (211) is further arranged in the reaction tank (21).

2. The plant according to claim 1, wherein the jet compounding system (1) comprises a jet (11), a feed hopper (12), a dosing water supply unit (13); wherein the feeding hopper (1) and the liquid preparation water supply unit (13) are used for respectively conveying the raw material for producing the jelly dispersion and the liquid preparation water to the ejector (11).

3. The apparatus according to claim 1 or 2, wherein the bulk gel chemical cross-linking reaction system (2) further comprises a first high viscosity fluid pump (22);

the reaction tank (21) is used for receiving jelly glue dispersion production raw materials and liquid preparation water from the jet flow mixing system (1) and carrying out reaction to obtain a pre-jelly glue dispersion, and the first high-viscosity fluid pump (22) is used for pumping the pre-jelly glue dispersion to the shearing and grinding system (3).

4. The device according to any one of claims 1 to 3, wherein the shear grinding system (3) is a colloid mill.

5. The device according to any one of claims 1-4, wherein the storage system (4) comprises an agitation tank (41) and a second high viscosity fluid pump (42), wherein the second high viscosity fluid pump (42) is adapted to pump the jelly dispersion of the shear grinding system (3) into the agitation tank (41).

6. The device according to any one of claims 1 to 5, wherein the intelligent regulation and control system (5) comprises a jet mixing system controller (51), a body gel chemical crosslinking reaction system controller (52), a shearing and grinding system controller (53), a storage system controller (54), an overcurrent protection device (55), an explosion-proof quick plug (56) and an explosion-proof cabinet body (57);

the jet flow mixing system controller (51) is connected with the jet flow mixing system (1), the body jelly chemical crosslinking reaction system controller (52) is connected with the body jelly chemical crosslinking reaction system (2), the shearing and grinding system controller (53) is connected with the shearing and grinding system (3), and the storage system controller (54) is connected with the storage system (4) through an explosion-proof quick plug (56).

7. The device according to any one of claims 1-6, wherein the first and second high viscosity fluid pumps (22, 42) are each bi-directionally transportable high viscosity fluid pumps; alternatively, the first and second electrodes may be,

and a return pipeline is also arranged between the body jelly chemical crosslinking reaction system (2) and the shearing and grinding system (3) and between the shearing and grinding system (3) and the storage system (4).

8. Use of a skid-mounted jelly dispersion production plant according to any one of claims 1 to 7 for the preparation of jelly dispersions and/or oil field profile control.

Technical Field

The invention relates to the field of oil field profile control and flooding, in particular to a skid-mounted jelly dispersion production device, a jelly dispersion and a preparation method and application thereof.

Background

Reservoir heterogeneity is a main factor influencing high-efficiency development of oil reservoirs, and the heterogeneity of strata needs to be regulated and controlled firstly to improve the water-flooding development effect of the oil reservoirs in the middle and later periods. Among various technological measures, polymer injection, a polymer-based binary/ternary composite oil displacement system, gel, polymer microspheres and the like are important technical means for realizing the regulation and control of an oil reservoir. However, the technical measures expose some problems in the implementation process of an oil reservoir and mine field, and are influenced by factors such as shearing of ground injection equipment, stratum seepage shearing, stratum physicochemical properties (temperature, mineralization degree, pH value and the like) and stratum water dilution, so that the viscosity loss based on polymers is large, the fluidity control capability is weakened, and particularly in the subsequent water flooding stage, the injection pressure is reduced quickly, and a long-term effective regulation and control effect is difficult to obtain; for a jelly glue system based on a polymer, under the influence of the shearing and diluting effects, the effective concentration of the polymer injected into a formation gel forming liquid is diluted, and the polymer structure is damaged, so that the jelly forming time is uncertain, the gel forming strength is reduced, the regulation and control effect is reduced, and the shearing effect is more obvious for a low-permeability oil reservoir; the polymer microsphere is prepared by using A Monomer (AM) raw material, so that the environment friendliness is poor, the preparation process is relatively complex, and the cost is high.

In view of the problems of the regulating agent and the combination of the controllable characteristics of the oil field, CN 102936490a discloses a method for preparing an environment-friendly multi-scale zirconium gel dispersion plugging agent, which adopts a certain cross-linking technology and a certain dispersion technology, and prepares aqueous phase dispersion solutions with different particle size distributions from bulk gel formed on the ground through mechanical shearing action. The multi-scale gel dispersoid particles have good viscoelasticity, can move deep along with the deformation of the size and the shape of pores in a stratum, can avoid the influence of ground shearing, underground seepage shearing and physicochemical properties of a polymer regulation and control system, can meet the requirement of large-scale industrial production, and are environment-friendly. The nanometer-scale, micron-scale and millimeter-scale zirconium gel dispersoid obtained by the method can enter the deep part of the stratum through the particle size of the dispersoid, is aggregated and expanded in the deep part of the stratum, can effectively adjust the water absorption section of the stratum, and has strong fluidity control capability.

CN 102996106B discloses an integrated continuous on-line production and injection method of a jelly dispersion, which comprises two parts of jelly dispersion production and injection and can realize the production of the jelly dispersion in an industrial workshop and the rapid injection at a well site. Based on the method, the production and injection integration of the jelly dispersoid can be realized by adjusting the production process of the multi-scale jelly dispersoid. However, the process of the invention mainly relates to the production of the gel dispersion in an industrial workshop, greatly increases the operation cost of deep profile control (profile control) of the gel dispersion for the complex environments such as mudflats, hills, offshore operation platforms and the like, and has high long-distance transportation and packaging costs and the like, and limits the large-scale application of the gel dispersion in complex oil reservoirs. In addition, the chemical reaction of the body jelly related to the patent is only carried out at normal temperature, the reaction of a medium-high temperature body jelly system is difficult to realize, and the use of medium-high temperature high-salinity oil reservoirs cannot be met.

Disclosure of Invention

The invention aims to provide a skid-mounted jelly dispersion production device, a jelly dispersion, a preparation method and application thereof, which can realize the rapid crosslinking reaction of body jelly in medium-high temperature oil reservoirs, realize the large-scale preparation of multi-scale jelly dispersions, are suitable for the continuous production of complex environments such as mudflats, hills, offshore operation platforms and the like.

In order to achieve the above object, the present invention provides a skid-mounted device for producing a jelly dispersion, which comprises the following components in sequence according to the trend of logistics: the device comprises a jet flow mixing system, a body gel chemical crosslinking reaction system, a shearing and grinding system and a storage system;

the mixing system is used for conveying a jelly glue dispersion production raw material and liquid preparation water to the body jelly glue chemical crosslinking reaction system in a jet flow mode for reaction to obtain a pre-jelly glue dispersion;

the shearing and grinding system is used for receiving the pre-jelly dispersion body from the body jelly chemical crosslinking reaction system so as to grind and shear the pre-jelly dispersion body to obtain the jelly dispersion body;

the storage system is used for receiving and storing the jelly glue dispersion from the shearing and grinding system;

the device also comprises an intelligent regulation and control system, a body gel chemical crosslinking reaction system, a shearing and grinding system and a storage system, wherein the intelligent regulation and control system is used for regulating and controlling the jet flow mixing system, the body gel chemical crosslinking reaction system, the shearing and grinding system and the storage system;

the body gel chemical crosslinking reaction system comprises a reaction tank, and a heating device is further arranged in the reaction tank.

In a second aspect the present invention provides a method of preparing a jelly dispersion, the method comprising:

(1) conveying the partially hydrolyzed polyacrylamide and liquid preparation water to a jet flow mixing system, and then jetting the mixture to a body gel chemical crosslinking reaction system for mixing to obtain a partially hydrolyzed polyacrylamide aqueous solution;

(2) conveying the cross-linking agent, the coagulant and the stabilizer into a jet flow mixing system, and then jetting the mixture to a body gel chemical cross-linking reaction system to contact with the aqueous solution to obtain a body gel glue solution;

(3) heating to a preset temperature by using a heating device in a chemical crosslinking reaction system of the body jelly, and aging the obtained body jelly into a liquid glue at the preset temperature to obtain a pre-jelly dispersoid;

(4) shearing the obtained pre-jelly dispersoid for one time in a shearing and grinding system to obtain the jelly dispersoid;

wherein the relative molecular weight of the partially hydrolyzed polyacrylamide is 600-1000 ten thousand;

the cross-linking agent is a resin cross-linking agent, the coagulant is an alcohol amine coagulant, and the stabilizer is thiourea.

In a third aspect, the present invention provides a bulk jelly system obtainable by the above process.

A fourth aspect of the invention provides a skid-mounted jelly dispersion production plant as described above and/or the use of a jelly dispersion as described above in oilfield profile control.

The invention can obtain the following beneficial effects:

(1) the device is skid-mounted, so that the continuous production and use of the jelly dispersion in complex environments such as mudflats, hills, offshore operation platforms and the like are realized, and the defects of difficult transportation and high packaging cost are overcome.

(2) The skid-mounted type jelly dispersion production device provided by the invention is simple in structure, each system is arranged on the skid plate, the movement of equipment is convenient, and the skid-mounted type on-line continuous production of jelly dispersion can be met only by connecting a pipeline and a cable when the skid-mounted type jelly dispersion production device is used.

(3) The skid-mounted jelly dispersion production device provided by the invention is convenient to operate and use, reduces the production cost and the labor intensity of workers, and improves the working environment of constructors. Meanwhile, the device has an intelligent regulation and control system, has the functions of water prevention, automatic alarm of over-operation of equipment and power-off protection, and improves the safety performance of on-site production of the jelly dispersoid.

(4) The skid-mounted jelly dispersion production device provided by the invention can be used for quickly preparing jelly dispersions, and preferably, the used high-viscosity fluid pump has the bidirectional functions of forward fluid conveying and reverse fluid conveying, is beneficial to circular shearing of jelly dispersions, and has the characteristics of simplicity and convenience in operation.

(5) The partially hydrolyzed polyacrylamide, the cross-linking agent, the coagulant and the stabilizer have good compatibility, the system can form the body jelly after reacting for 5-8 hours at the temperature of 90-95 ℃, and the system has the characteristics of quick freezing and energy consumption reduction.

Drawings

FIG. 1 is a specific skid-mounted jelly dispersion production plant provided by the present invention.

Description of the reference numerals

1-jet mixing system; 11-an ejector; 12-a feed hopper; 13-liquid preparation water supply unit; 14-a stationary base; 2-a chemical crosslinking reaction system of the body jelly; 21-a reaction tank; 22-a first high viscosity fluid pump; 211-a temperature raising device; 3-a shear grinding system; 4-a storage system; 41-stirring tank; 42-a second high viscosity fluid pump; 5-an intelligent regulation and control system; 51-jet mixing system controller; 52-a controller of a chemical crosslinking reaction system of the body jelly; 53-shear grinding system controller; 54-a storage system controller; 55-an over-current protection device; 56-explosion-proof quick plug; 57-explosion-proof cabinet body; v is a safety valve; l return line.

Detailed Description

The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual points, and between the individual points may be combined with each other to give one or more new ranges of values, and these ranges of values should be considered as specifically disclosed herein.

The invention provides a skid-mounted type jelly dispersion production device, which sequentially comprises the following components in the direction of logistics: the device comprises a jet flow mixing system 1, a body gel chemical crosslinking reaction system 2, a shearing and grinding system 3 and a storage system 4;

the mixing system 1 is used for conveying a jelly glue dispersion production raw material and liquid preparation water to the body jelly glue chemical crosslinking reaction system 2 in a jet flow mode for reaction to obtain a pre-jelly glue dispersion;

the shearing and grinding system 3 is used for receiving the pre-jelly dispersion from the body jelly chemical crosslinking reaction system 2 to grind and shear the pre-jelly dispersion to obtain the jelly dispersion;

the storage system 4 is used for receiving and storing the jelly glue dispersion from the shearing and grinding system 3;

the device also comprises an intelligent regulation and control system 5, wherein the intelligent regulation and control system is used for regulating and controlling the jet flow mixing system 1, the body gel chemical crosslinking reaction system 2, the shearing and grinding system 3 and the storage system 4;

the body jelly chemical crosslinking reaction system 2 comprises a reaction tank 21, and a heating device 211 is further arranged in the reaction tank 21.

According to the present invention, the jet mixing system 1 may comprise a jet ejector 11, the jet ejector 11 is used for jetting the jelly dispersion production raw material and the liquid preparation water into the reaction tank 21 of the bulk jelly chemical crosslinking reaction system 2. Wherein the power of the jet flow can be 10-50 KW.

In addition, the jet mixing system 1 may further include a feed hopper 12 and a liquid preparation water supply unit 13, wherein the feed hopper 12 is configured to deliver the raw material for producing the jelly dispersion to the ejector 11, and the liquid preparation water supply unit 13 is configured to deliver the liquid preparation water to the ejector 11.

Preferably, the jet mixing system 1 further comprises a fixing base 14, and the fixing base 14 can effectively fix the jet mixing system 1 on a rocker.

Preferably, the liquid outlet of the jet mixing system 1 and the liquid inlet of the reaction tank 21 are connected by a pipeline, so that the reaction tank 21 can receive the jelly dispersion production raw material and the liquid preparation water from the jet mixing system 1.

According to the present invention, the temperature raising means 211 may raise the temperature of the reaction tank 21 to a predetermined temperature, for example, 90 to 95 ℃, to react the components of the jelly dispersion-producing raw material, thereby obtaining a pre-jelly dispersion. The temperature raising device 211 may be any device known in the art that can heat the reaction tank, and may be, for example, a resistance wire disposed on an inner wall of the reaction tank 21.

Preferably, the bulk gel chemical crosslinking reaction system 2 further comprises a first high viscosity fluid pump 22; the first high-viscosity fluid pump 22 can provide enough power for conveying the pre-jelly dispersion to the shearing and grinding system 3, and the first high-viscosity fluid pump 22 can be arranged near the discharge port of the reaction tank 21 and also can be arranged on a material conveying pipeline between the bulk jelly chemical crosslinking reaction system 2 and the shearing and grinding system 3.

According to the present invention, the shear grinding system 3 may be any apparatus in the art that can shear the pre-jelly dispersion to form a non-scale jelly dispersion, for example, a colloid mill.

According to the present invention, the storage system 4 may comprise an agitation tank 41 and a second high viscosity fluid pump 42, wherein the agitation tank 41 may ensure that the prepared jelly dispersion is maintained in a uniform state, and the second high viscosity fluid pump 42 may be used to provide sufficient power to pump the jelly dispersion of the shear mill system 3 into the agitation tank 41. Wherein the second high viscosity fluid pump 42 may be disposed near the stirring tank 41, or may be disposed on the material conveying pipeline between the shear grinding system 3 and the stirring tank 41.

According to the present invention, in order to obtain a jelly dispersion with more excellent performance, it is preferable that the first high-viscosity fluid pump 22 and the second high-viscosity fluid pump 42 are both high-viscosity fluid pumps capable of bidirectional transportation, so that the material flows in the bulk jelly chemical crosslinking reaction system 2, the shearing and grinding system 3 and the storage system 4 can be bidirectionally transported, for example, after the reaction raw materials are reacted in the bulk jelly chemical crosslinking reaction system 2, the pre-jelly dispersion can be transported to the shearing and grinding system 3 by the forward transportation of the first high-viscosity fluid pump 22, and after the shearing is completed in the shearing and grinding system 3, the jelly dispersion can be transported to the storage system 4 by the forward transportation of the second high-viscosity fluid pump 42, thereby completing the shearing for 1 time; in addition, the jelly dispersion in the storage system 4 can be conveyed to the shear grinding system 3 for shearing by the reverse conveying of the second high-viscosity fluid pump 42, and after the shearing is completed, the sheared material is conveyed to the bulk jelly chemical crosslinking reaction system 2 by the reverse conveying of the first high-viscosity fluid pump 22, so that 2 times of shearing is completed. Wherein, the shearing frequency can be 2-6 times.

Or, a return pipeline is further arranged between the body jelly chemical crosslinking reaction system 2 and the shearing and grinding system 3, and between the shearing and grinding system 3 and the storage system 4, and a high-viscosity fluid pump is arranged on the return pipeline, so that the circulating shearing can reversely convey the materials among the body jelly chemical crosslinking reaction system 2, the shearing and grinding system 3 and the storage system 4 through the return pipeline.

According to a preferred embodiment of the present invention, the jet mixing system 1, the body gel chemical crosslinking reaction system 2, the shearing and grinding system 3, the storage system 4 and the connecting pipelines between the systems are all connected with safety valves V. The safety valve V ensures the orderly and safe performance of the polymer solution maturation, the chemical cross-linking reaction of the bulk jelly, the fluid transport and the shear grinding of the jelly dispersion.

According to the present invention, the intelligent control system 5 preferably comprises a jet flow mixing system controller 51, a body gel chemical crosslinking reaction system controller 52, a shearing and grinding system controller 53, a storage system controller 54, an overcurrent protection device 55, an explosion-proof quick plug 56 and an explosion-proof cabinet 57. The jet flow mixing system controller 51 and the jet flow mixing system 1, the body gel chemical crosslinking reaction system controller 52 and the body gel chemical crosslinking reaction system 2, the shearing and grinding system controller 53 and the shearing and grinding system 3, and the storage system controller 54 and the storage system 4 can be connected through an explosion-proof quick plug 56. The system has the functions of water prevention, automatic alarm of over-operation of equipment and power-off protection, and more importantly, the system can orderly control the operation of other systems through the intelligent control system 5, so that the orderly and safe production is ensured.

The explosion-proof quick plug can ensure the safe operation of each system and is convenient for the quick connection of each system.

According to the invention, the jet flow mixing system 1, the body gel chemical crosslinking reaction system 2, the shearing and grinding system 3, the storage system 4 and the intelligent regulation and control system 5 are all arranged on a skid plate, so that the device can be conveniently moved, and the skid-mounted online continuous production of the gel dispersion can be met only by connecting a pipeline and a cable when the device is used.

According to a second aspect of the present invention, there is provided a method of preparing a jelly dispersion, wherein the method is carried out in an apparatus as described above, in particular the method comprising:

(1) conveying the partially hydrolyzed polyacrylamide and liquid preparation water to a jet flow mixing system 1, and then jetting the mixture to a body gel chemical crosslinking reaction system 2 for mixing to obtain a partially hydrolyzed polyacrylamide aqueous solution;

(2) conveying a cross-linking agent, a coagulant and a stabilizer into a jet flow mixing system 1, then jetting the mixture to a body gel chemical cross-linking reaction system 2 to contact with the aqueous solution to obtain a body gel into a gel solution;

(3) heating to a preset temperature by using a heating device in the body jelly chemical crosslinking reaction system 2, and aging the obtained body jelly into a jelly liquid at the preset temperature to obtain a pre-jelly dispersoid;

(4) shearing the obtained pre-jelly dispersoid for one time in a shearing and grinding system 3 to obtain the jelly dispersoid;

wherein the relative molecular weight of the polyacrylamide is 600-1000 ten thousand;

the cross-linking agent is a resin cross-linking agent, the coagulant is an alcohol amine coagulant, and the stabilizer is thiourea.

As mentioned above, the method of the invention can be implemented under the condition of medium-high temperature oil reservoir, and can be used for continuous production in complex environments such as mudflats, hills, offshore operation platforms and the like. In addition, the partially hydrolyzed polyacrylamide with specific relative molecular weight is adopted to be compatible with the resin cross-linking agent, the alcohol amine coagulant and the thiourea stabilizer, so that the body jelly can be formed more quickly at lower polyacrylamide concentration.

According to the invention, partially hydrolyzed polyacrylamide, a resin cross-linking agent, an alcohol amine coagulant and a thiourea stabilizer are combined to obtain a body jelly system and a jelly dispersion with excellent performance, and in order to obtain the body jelly system and the jelly dispersion with better performance, the content of the partially hydrolyzed polyacrylamide is 0.3-0.6 weight part, the content of the cross-linking agent is 0.6-1.5 weight part, the content of the coagulant is 0.3-1 weight part and the content of the stabilizer is 0.01-0.05 weight part relative to 100 weight parts of the body jelly glue solution.

More preferably, the partially hydrolyzed polyacrylamide is contained in an amount of 0.3 to 0.6 parts by weight, the crosslinking agent is contained in an amount of 0.9 to 1.2 parts by weight, the coagulant is contained in an amount of 0.5 to 0.8 parts by weight, and the stabilizer is contained in an amount of 0.02 to 0.04 parts by weight, based on 100 parts by weight of the bulk gel forming solution.

According to the invention, the relative molecular weight of the polyacrylamide adopted by the invention is required to be within the range of 600-1000 ten thousand, and if the relative molecular weight is less than 600 ten thousand g/mol, the formed body gel has long freezing time and weak freezing strength; if the relative molecular weight is greater than 1000, the viscosity of the polymer solution is too high to uniformly disperse the substance, and therefore, the relative molecular weight of the polyacrylamide is 600-1000 ten thousand, preferably 850-1000 ten thousand, and more preferably 900-1000 ten thousand.

Although the polyacrylamide is a partially hydrolyzed polyacrylamide, the partially hydrolyzed polyacrylamide is a nonionic polymer having a degree of hydrolysis of preferably 3 to 10%, preferably 3 to 6%, which means the percentage by mole of the hydrolyzed structural units in the polyacrylamide based on the total polyacrylamide structural units.

According to the present invention, the resin crosslinking agent is preferably a phenolic resin prepolymer, and the resin crosslinking agent used in the present invention is usually a commercially available product, and its effective content may be 40 to 60 wt%, that is, the content of the solvent-removed component is 40 to 60 wt%, and the amount of the resin crosslinking agent is the effective amount thereof.

According to the invention, the alcamine accelerator can be chosen from a variety of alcamine accelerators, preferably one or more of triethanolamine, triisopropanolamine and triisobutanolamine. The alcohol amine coagulant, especially triethanolamine, can effectively shorten the freezing time, so that a body jelly system with higher strength can be obtained by using a smaller amount of the coagulant under the condition of using the alcohol amine coagulant, especially triethanolamine, as the coagulant.

According to the present invention, each component of the composition can be obtained by a conventional method in the art, for example, can be prepared by a conventional method in the art, or can be a commercial product.

According to the invention, the formation time of the jelly dispersoid can be effectively shortened by adding the partially hydrolyzed polyacrylamide and the liquid preparation water into the chemical crosslinking reaction system 2 of the jelly in a jet flow mode to prepare an aqueous solution, then injecting the crosslinking agent, the coagulant and the stabilizer into the aqueous solution to form the jelly, and then aging the jelly.

In the step (1), the partially hydrolyzed polyacrylamide and the liquid preparation water are preferably mixed by stirring in the bulk gel chemical crosslinking reaction system 2, and the stirring time may be 30-60 min.

The contacting of the prepared aqueous solution with the crosslinking agent, the coagulant and the stabilizer to form the bulk jelly in the step (2) may also be performed under stirring for 10-20min, wherein the formation of the bulk jelly may be performed at a normal temperature, for example, 20-40 ℃. The order of addition of the crosslinking agent, the coagulant, and the stabilizer is not particularly limited, and may be selected by those skilled in the art according to the actual circumstances.

According to the invention, the power of the ejector for ejecting the substances can be 10-50KW in order to ensure the effective formation of the body jelly and the property of the subsequent jelly dispersion.

According to the invention, in the step (3), the reaction tank can be heated to a predetermined temperature under the action of the heating device, so that the reaction of the medium-high temperature bulk gel system can be realized, and the predetermined temperature can be 90-95 ℃.

According to the invention, the aging time can be shortened to 5-8 h.

According to the present invention, in the step (4), preferably, the shearing is performed in a colloid mill at a rotation speed of 1000-3000rpm (e.g., 2500-3000rpm), a shearing pitch of 10-170 μm (e.g., 10-50 μm), and a shearing time of 3-15min (e.g., 5-10 min).

According to the present invention, the method of the present invention preferably further comprises transferring the jelly dispersion obtained in step (3) to a storage system 4 for storage.

Preferably, in order to obtain the jelly glue dispersion with more excellent performance, the method further comprises the steps of returning the jelly glue dispersion in the storage system (4) to the shearing and grinding system 3 for secondary shearing (1 shearing is carried out after the jelly glue dispersion passes through the shearing and grinding system 3 every 1 time), and returning the secondary shearing product to the bulk jelly chemical crosslinking reaction system 2.

Wherein the number of times of shearing can be 2-6.

The third aspect of the present invention is the jelly dispersion obtained by the above-described production method.

According to the invention, the particle size of the jelly glue dispersion is preferably 0.5-10 μm, more preferably 0.8-2.5 μm, and the viscosity is preferably 5-10 mPas, more preferably 7-8 mPas.

In a fourth aspect the invention provides the use of a device and/or a jelly dispersion as described above in oilfield profile control.

The present invention will be described in detail below by way of examples.

The resin cross-linking agent is a phenolic resin prepolymer solution purchased from Shengli oil field Shengli chemical industry Limited liability company, and the effective content is 50 wt%.

In the following examples, partially hydrolyzed polyacrylamides are purchased from Shandong stone Dai oilfield technical service, Inc.

In the following examples, the particle size of the jelly glue dispersion was measured by a laser particle size analyzer model Bettersize2000, Denton, and the viscosity was measured by a Brookfield viscometer.

The following examples are carried out in a skid-mounted jelly dispersion production apparatus having a structure as shown in fig. 1, and including a jet mixing system 1, a bulk jelly chemical crosslinking reaction system 2, a shearing and grinding system 3, a storage system 4, and an intelligent control system 5.

Wherein efflux blending system 1 includes: the jet device 1, the feeding funnel 12, the liquid preparation water supply unit 13 and the fixed base 14. The liquid inlet of the ejector 1 is connected with a feeding hopper 12 and a liquid-preparation water supply unit 13.

The body jelly chemical crosslinking reaction system 2 comprises: the reactor 21 and the first high viscosity fluid pump 22, and a temperature raising device 211 (heating resistor) is provided on the inner wall of the reactor 21 in the circumferential direction. The liquid outlet of the ejector 1 is connected with the liquid inlet of the reaction tank 21 through a material conveying pipeline, and the liquid outlet of the reaction tank 21 is connected with the liquid inlet of the shearing and grinding system 3 through a first high-viscosity fluid pump 22. Wherein the first high viscosity fluid pump 22 is arranged on the material conveying pipeline between the reaction tank 21 and the shearing grinding system 3.

The shear grinding system 3 is a colloid mill.

The storage system 4 includes: a stirring tank 41, and a second high-viscosity fluid pump 42. The inlet of the stirring tank 41 is connected to the colloid mill by a second high viscosity fluid pump 42. Wherein the second high-viscosity fluid pump 42 is arranged on the material conveying pipeline between the colloid mill and the stirring tank 41.

The intelligent regulation and control system 5 comprises a jet flow mixing system controller 51, a body gel chemical crosslinking reaction system controller 52, a shearing and grinding system controller 53, a storage system controller 54, an overcurrent protection device 55, an explosion-proof quick plug 56 and an explosion-proof cabinet body 57. The jet flow mixing system controller 51 and the jet flow mixing system 1, the body gel chemical crosslinking reaction system controller 52 and the body gel chemical crosslinking reaction system 2, the shearing and grinding system controller 53 and the shearing and grinding system 3, and the storage system controller 54 and the storage system 4 are all connected through an explosion-proof quick plug 56.

The first high-viscosity fluid pump 22 and the second high-viscosity fluid pump 42 are both bi-directional high-viscosity fluid pumps.

And the jet flow mixing system 1, the body gel chemical crosslinking reaction system 2, the shearing and grinding system 3, the storage system 4 and connecting pipelines among the systems are all connected with safety valves V.

The jet flow mixing system 1, the body gel chemical crosslinking reaction system 2, the shearing and grinding system 3, the storage system 4 and the intelligent control system 5 are all arranged on a skid plate.