阅读说明：本技术 快凝型高分子合成改性乳化沥青堵水剂的制备及施工方法 (Preparation and construction method of quick-setting type polymer synthetic modified emulsified asphalt water plugging agent ) 是由 王荣博 辛海洋 于 2021-07-14 设计创作，主要内容包括：本发明提供了一种快凝型高分子合成改性乳化沥青堵水剂的制备及施工方法,本发明属于材料技术领域,特别涉及一种高温地层条件下快速封堵地层孔隙、保持地层压力,将油层按一定方法、方向从高温地层中驱出至预先采油油井井筒附近范围,从而大幅提升采油效率及采油数量的一种快凝型高分子材料合成改性乳化沥青堵水剂制备方法及施工方法。该堵水剂可用于60℃～120℃环境下,地层水矿化度(20000～250000)之间的油井地层堵水,能有效地提升采油量和采油效率,从而为油井的降本、增产发挥极其重要的作用。(The invention provides a preparation and construction method of a quick-setting polymer synthetic modified emulsified asphalt water shutoff agent, belongs to the technical field of materials, and particularly relates to a preparation method and a construction method of a quick-setting polymer synthetic modified emulsified asphalt water shutoff agent, which can quickly block formation pores under the condition of a high-temperature formation, keep the formation pressure, and drive an oil layer out of the high-temperature formation to a range near a pre-oil extraction oil well shaft according to a certain method and direction, so that the oil extraction efficiency and the oil extraction quantity are greatly improved. The water shutoff agent can be used for water shutoff of oil well stratums with the stratum water mineralization degree (20000-250000) in the environment of 60-120 ℃, and can effectively improve the oil recovery amount and the oil recovery efficiency, thereby playing an extremely important role in cost reduction and yield increase of oil wells.)

1. The quick-setting polymer synthetic modified emulsified asphalt water shutoff agent is characterized by comprising a synthetic polymer material modified emulsified asphalt water shutoff agent and driving surface active water, wherein the synthetic polymer material modified emulsified asphalt water shutoff agent accounts for 44-48% in proportion, and the driving surface active water accounts for 52-56%.

2. The quick-setting polymer-synthesized modified emulsified asphalt water shutoff agent as claimed in claim 1, wherein the synthesized polymer material modified emulsified asphalt water shutoff agent is composed of 58-74% of anionic emulsified asphalt solution, 8-17% of resin emulsion, 12-25% of rubber emulsion, 2-5% of nano ZnO dispersion, 3-7% of powder slurry, 0.5-3.0% of rubber process oil, 0.2-0.5% of coupling agent, 0.4-1.2% of pH regulator aqueous solution, 0.1-0.5% of dispersing agent, 0.02-0.05% of emulsion mildew inhibitor and 0.05-0.15% of defoaming agent; the flooding surface active water consists of 0.05 to 0.1 percent of nonionic sulfonate surfactant, 0.4 to 0.9 percent of nonionic abietic acid soap surfactant, 0.03 to 0.05 percent of isomeric alcohol polyoxyethylene ether, 0.1 to 0.3 percent of one or more of alkylphenol polyoxyethylene ether, 0.07 to 0.1 percent of alkynediol and deionized water with the conductivity of less than 0.50 mS/m.

3. The quick-setting polymer-synthesized modified emulsified asphalt water shutoff agent as claimed in claim 2, wherein the anionic emulsified asphalt solution is medium-or slow-cracking quick-setting anionic emulsified asphalt with a solid content of 48-65%, and comprises asphalt selected from 70A asphalt and 90A asphalt, and a main emulsifier selected from one or more of medium-or slow-cracking quick-setting tall oil anionic emulsifier, medium-or slow-cracking quick-setting potassium oleate emulsifier, and medium-or slow-cracking quick-setting sodium abietate anionic emulsifier; the auxiliary emulsifier adopts one or more of nonionic alkylphenol polyoxyethylene ether emulsifier, isomeric alcohol polyoxyethylene ether emulsifier and nonionic phosphate emulsifier; the stabilizer is one or two of sodium carboxymethylcellulose (CMC), hydroxyethyl cellulose and hydroxyethyl methyl cellulose; the defoaming agent is mineral oil or organic silicon mineral oil defoaming agent; the pH regulator is selected from 50% sodium hydroxide aqueous solution or powder, and softened water or deionized water.

4. The quick-setting polymer-synthesized modified emulsified asphalt water shutoff agent according to claim 2, wherein the resin emulsion is an anionic resin emulsion, the pH value is 7-12, and the solid content is 30-55%; the resin emulsion is prepared by selecting styrene acrylic emulsion and acrylic emulsion as main resin emulsions, or compounding one or more of aqueous polyurethane monomer emulsion, polyacrylamide emulsion, aqueous epoxy resin emulsion and aqueous polyvinyl chloride emulsion.

5. The quick-setting polymer synthesis modified emulsified asphalt water shutoff agent according to claim 2, wherein the rubber emulsion is an anionic rubber emulsion, the pH value is 7-11, the solid content is 48-67%, and the rubber emulsion is selected from one or two of neoprene latex or pre-crosslinked neoprene latex and styrene-butadiene latex, pre-crosslinked styrene-butadiene latex serving as a main rubber emulsion, compound nitrile-butadiene rubber emulsion and compound SBS latex.

6. The quick-setting polymer-synthesized modified emulsified asphalt water shutoff agent as claimed in claim 2, wherein the nano ZnO dispersion has a stock solution solid content of 20-30%, a particle size of 30-100 nm, and a pH value of 9-11.

7. The quick-setting polymer-synthesized modified emulsified asphalt water shutoff agent as claimed in claim 2, wherein the solid content of the powder slurry is 50-60%, wherein the filler comprises one or more of nano light calcium carbonate, wollastonite, kaolin and mica powder, the particle size is 1250-3000 meshes, the powder slurry comprises 49.5-58.5% of filler, 0.5-1.5% of sodium bentonite, 0.25-0.35% of sodium hydroxide, 1.0-2.0% of ammonium polyacrylate dispersant, 0.3-1.0% of alkylphenol ethoxylate, 0.2-0.5% of isomeric alcohol ethoxylate, 0.06-0.1% of cosolvent, 0.3-0.5% of organosilicon defoamer and the balance of deionized water.

8. The quick-setting polymer-synthesized modified emulsified asphalt water shutoff agent according to claim 2, wherein the rubber process oil is one or more of aromatic hydrocarbon rubber process oil, naphthenic base rubber process oil and paraffin base rubber process oil, the coupling agent is one or two of aminosilane coupling agent and methacryloxy silane coupling agent, the aqueous solution of the pH regulator is AMP-95 multifunctional pH neutralizer, the dispersant is fatty acid polyglycol ester, the emulsion mildew preventive is mildew-proof and algae-proof zinc pyrithione suspension (solid content is 50%) or deionized water diluted 3-4 times of RuCO-BAC AGL), and the defoamer is mineral oil defoamer (LT-466) or (ML-A203E).

9. The preparation method of the quick-setting polymer synthesized modified emulsified asphalt water shutoff agent as claimed in claims 1-8, which is characterized by comprising the following steps:

s1: preparing an anionic emulsified asphalt solution; heating softened water to 40 ℃, sequentially adding various emulsifiers, uniformly stirring (heating to 58-70 ℃), sequentially adding a pH value regulator, a stabilizer, a defoaming agent and the like, uniformly stirring, requiring that the pH value of a soap solution is more than or equal to 11, pumping into a 70A or 90A matrix asphalt heating tank, starting a heat conduction oil heating device to heat the mixture to a molten state, starting a stirring device to heat the mixture to 135-145 ℃ for later use, carrying out high-speed shearing, grinding and dispersing by a colloid mill, cooling to below 32 ℃ after secondary heat exchange to a transfer tank, filtering by a 80-mesh and 150-mesh steel wire filter screen, and pumping into a raw material storage tank for later use, wherein the particle size is required (D50 is less than or equal to 1.50 mu m, and D97 is less than or equal to 4.00 mu m);

s2: preparing a resin emulsion; before use, the complex blending performance of the resin emulsion is treated, and the PH value of the resin emulsion is greatly different and is balanced by adopting a PH regulator;

the particle size distribution of the emulsion is between 30nm and 1200nm, the particle size of the emulsion is required (D50 is less than or equal to 700 nm), the emulsion is blended (low-speed dispersion stirring is carried out, the rotating speed is less than or equal to 200r/min, and the stirring time is not less than 10min after the feeding is finished), and the emulsion is filtered for later use;

s3: preparing rubber emulsion; before use, the complex blending performance of the materials is treated, and a PH regulator is adopted for balance treatment when the PH value has large difference;

the particle size distribution of the emulsion is 200 nm-1500 nm, the particle size of the emulsion is required to be (D50 is less than or equal to 900 nm), the emulsion is blended (low-speed dispersion stirring is carried out, the rotating speed is less than or equal to 200r/min, the stirring time is not less than 15min after the feeding is finished), and the emulsion is filtered for later use;

s4: preparing nano ZnO dispersion liquid; dispersing and diluting the mixture to 5% -6% by 3-4 times of deionized water at a high speed before use, and then adding the mixture according to a formula;

s5: preparing powder slurry; stirring at a low speed (500-600 r/min), adding a small amount of sodium hydroxide cosolvent into deionized water to adjust the pH of the system to 11-12, adding sodium bentonite, and then accelerating to (2000-3000 r/min) to uniformly disperse the soil; then, reducing the speed to 500r/min, stirring, sequentially adding a polyacrylic acid ammonium salt dispersing agent, an alkyl polyoxyethylene ether (OP-20) nonionic surfactant, an isomeric tridecanol polyoxyethylene ether emulsifier (1308) nonionic surfactant, an 1/2 organic silicon defoaming agent (AG-351) nano light calcium carbonate, wollastonite and kaolin, raising the speed to high speed (2000-3000 r/min), dispersing for 30-40 min, and finally adding the rest 1/2 defoaming agent;

s6: the pH regulator aqueous solution is an AMP-95 multifunctional pH neutralizer, and is added after being dispersed and diluted at high speed by deionized water of 3-4 times before use; the dispersing agent is fatty acid polyglycol ester, and is added after being dispersed and diluted at a high speed by 5-7 times of deionized water before use; the emulsion mildew preventive is mildew-proof and algae-proof zinc pyrithione suspension (solid content is 50%) or is directly added in a formula after being diluted by deionized water by 3-4 times of a RuCO-BAC AGL; the defoaming agent is mineral oil defoaming agent (LT-466) or (ML-A203E), and is diluted by deionized water by 3-4 times and then directly added in the formula;

s7: driving surface active water into deionized water with the conductivity of less than 0.50mS/m, sequentially adding a nonionic sulfonate surfactant, a nonionic rosin acid soap surfactant, isomeric alcohol polyoxyethylene ether and an alkyl polyoxyethylene ether surfactant in specified proportions, uniformly stirring at a rotating speed of not less than 200r/min (the time length is not less than 7 minutes), adding an acetylenic diol wetting agent in specified proportions, and uniformly stirring at a rotating speed of not less than 300r/min (the time length is not less than 5 minutes) for uniform dispersion;

s8: starting a stirring device of the asphalt stirring tank body, and fixing the speed to 65-85 r/min until the emulsified asphalt solution is completely added, and then stirring for not less than 5 minutes; after the rubber operation oil and the powder slurry are sequentially and slowly added, the rotating speed is increased to 300-400 r/min, and the materials are uniformly stirred;

s9: starting a resin emulsion stirring tank device, setting the speed to 80-120 r/min, sequentially and respectively adding the resin emulsion and the pH value regulator, and stirring for not less than 5 minutes after all the resin emulsion and the pH value regulator are completely added;

s10: starting a latex stirring tank device, setting the speed to 80-120 r/min, sequentially and respectively adding the latex emulsion and the nano ZnO dispersion liquid, and stirring for not less than 5 minutes after the completion of the whole process; diluting and stirring a silane coupling agent by using 3-4 times of deionized water, adding the diluted silane coupling agent into a latex stirring tank, and increasing the stirring speed to 300-400 r/min for uniform dispersion for not less than 5 minutes;

s11: starting a reaction tank for stirring, controlling the stirring speed to be 120-150 r/min, pumping the mixed liquid of emulsified asphalt, rubber operating oil and powder slurry into a finished product reaction tank, sequentially adding the mixed resin emulsion and rubber emulsion, uniformly stirring, and stirring for not less than 5 minutes after the addition is finished;

s12: reducing the stirring speed of the reaction tank to 65-85 r/min, sequentially adding a dispersant aqueous solution, a defoaming agent aqueous solution, a mildew inhibitor aqueous solution and the like, and stirring for not less than 30 minutes after the addition is finished to complete production;

s13: filtering with 80 mesh metal filter screen, and packaging.

10. The construction method of the quick-setting polymer synthesized modified emulsified asphalt water shutoff agent as claimed in claims 1-8, characterized by comprising the following steps:

after the underground oil layer is exploited to a certain degree, the exploitation difficulty is gradually increased along with the reduction of the pressure in the stratum; in order to exactly develop an oil layer, water is generally injected into the ground in a certain sequence to keep the formation pressure at the later stage, the oil layer is driven to the periphery of a developed oil well according to a preset scheme for exploitation, and in the later stage, the oil layer is dispersed from the position of the developed oil well to the periphery again along with the stop of water injection and returns to the far part of the formation, so that the oil layer is in a state of difficult exploitation again;

firstly, injecting surface-entering active water into the stratum of an oil well by using a high-pressure pump, continuously injecting the surface-entering active water into the stratum by high pressure, driving the mineralization water and an oil layer in the stratum into the periphery, continuously injecting the surface-entering active water after keeping a certain pressure to continuously drive the mineralization water and the oil layer nearby in the stratum away to a pre-exploitation position, injecting the rapid-setting synthetic high-molecular material modified emulsified asphalt oil well plugging agent by using the high-pressure pump after tightening, and keeping a certain pressure to enable the plugging agent to be filled to the full extent of surface activity and drive the surface-entering active water injection range; along with the later preset exploitation process of the oil well, along with the reduction of the formation pressure, the mineralization water and the oil layer of the formation can be refilled into the areas of surface active water and water shutoff agent, and at the moment, Na in the mineralization water⁺、Ca²⁺、Mg²⁺、K⁺The metal ions and the anionic polymer in the water plugging agent synthesize modified emulsified asphalt particles to generate emulsion breaking reaction,the viscous microgel particles are formed to block a larger mineralized water channel, so that an oil layer driven to a mining position does not flow back to the original position, and the oil extraction amount and the mining efficiency can be greatly improved; in addition, the plugging agent contains more asphalt components and has the same components as crude oil, and plugging particles formed by the plugging agent can be dissolved in the later stage of the crude oil in the oil layer, so that the stratum cannot be plugged.

Technical Field

The invention relates to the technical field of emulsified asphalt water shutoff agents, in particular to a preparation and construction method of a quick-setting type high-molecular synthetic modified emulsified asphalt water shutoff agent.

Background

The high temperature and high salinity stratum water of the oil well stratum environment, the continuous reduction of the stratum pressure during the oil extraction period and the uncertain stratum pore conditions put forward higher requirements for the subsequent continuous oil extraction and oil displacement technology, the common emulsified asphalt water plugging agent has simple plugging and oil displacement functions, and also has the advantages that the stratum plugging and oil displacement effects are greatly reduced or gradually lose the plugging effect along with the rise of the temperature and the continuous reduction of the pressure of the oil well stratum, so that the extraction cost is continuously increased, and when the extraction cost is higher than the value of the extracted crude oil, the oil extraction work also loses the practical significance. In addition, as the current petroleum resources in China become more scarce and the exploitation difficulty becomes larger and larger, the oil recovery of the stratum in the oil recovery area is effectively increased, the plugging and oil displacement levels of the stratum are continuously improved, and the improvement of the oil recovery efficiency and the oil recovery are a practical and effective method for guaranteeing the national energy strategy and play an important role in higher-level utilization of national energy.

Disclosure of Invention

In order to make up the defects of the prior art, the invention provides a preparation and construction method of a quick-setting type polymer synthetic modified emulsified asphalt water plugging agent. The water shutoff agent can be used for water shutoff of oil well stratums with the stratum water mineralization degree (20000-250000) in the environment of 60-120 ℃, and can effectively improve the oil recovery amount and the oil recovery efficiency, thereby playing an extremely important role in cost reduction and yield increase of oil wells.

The invention is realized by the following technical scheme: the quick-setting polymer synthetic modified emulsified asphalt water shutoff agent is characterized by comprising a synthetic polymer material modified emulsified asphalt water shutoff agent and driving surface active water, wherein the synthetic polymer material modified emulsified asphalt water shutoff agent accounts for 44-48% in proportion, and the driving surface active water accounts for 52-56%.

As a preferred scheme, the synthetic polymer material modified emulsified asphalt water shutoff agent consists of 58-74 percent of anionic emulsified asphalt solution, 8-17 percent of resin emulsion, 12-25 percent of rubber emulsion, 2-5 percent of nano ZnO dispersion liquid, 3-7 percent of powder slurry, 0.5-3.0 percent of rubber operating oil, 0.2-0.5 percent of coupling agent, 0.4-1.2 percent of pH value regulator aqueous solution, 0.1-0.5 percent of dispersing agent, 0.02-0.05 percent of emulsion mildew preventive and 0.05-0.15 percent of defoaming agent; the flooding surface active water consists of 0.05 to 0.1 percent of nonionic sulfonate surfactant, 0.4 to 0.9 percent of nonionic abietic acid soap surfactant, 0.03 to 0.05 percent of isomeric alcohol polyoxyethylene ether, 0.1 to 0.3 percent of one or more of alkylphenol polyoxyethylene ether, 0.07 to 0.1 percent of alkynediol and deionized water with the conductivity of less than 0.50 mS/m.

As a preferred scheme, the anionic emulsified asphalt solution is intermediate-cracked or slow-cracked quick-setting anionic emulsified asphalt with the solid content of 48-65 percent, and comprises asphalt selected from 70A asphalt and 90A asphalt, and a main emulsifier selected from one or more of intermediate-cracked or slow-cracked quick-setting tall oil anionic emulsifier, intermediate-cracked or slow-cracked quick-setting potassium oleate emulsifier and intermediate-cracked or slow-cracked quick-setting sodium abietate anionic emulsifier; the auxiliary emulsifier adopts one or more of nonionic alkylphenol polyoxyethylene ether emulsifier, isomeric alcohol polyoxyethylene ether emulsifier and nonionic phosphate emulsifier; the stabilizer is one or two of sodium carboxymethylcellulose (CMC), hydroxyethyl cellulose and hydroxyethyl methyl cellulose; the defoaming agent is mineral oil or organic silicon mineral oil defoaming agent; the pH regulator is selected from 50% sodium hydroxide aqueous solution or powder, and softened water or deionized water.

Further, the resin emulsion is anionic resin emulsion, the pH value is 7-12, and the solid content is 30-55%; the resin emulsion is prepared by selecting styrene acrylic emulsion and acrylic emulsion as main resin emulsions, or compounding one or more of aqueous polyurethane monomer emulsion, polyacrylamide emulsion, aqueous epoxy resin emulsion and aqueous polyvinyl chloride emulsion.

Further, the rubber emulsion is anionic rubber emulsion, the pH value is 7-11, the solid content is 48% -67%, and the rubber emulsion is one or two of neoprene latex or pre-crosslinked neoprene latex and styrene-butadiene latex, pre-crosslinked styrene-butadiene latex serving as main rubber emulsion, compound nitrile-butadiene rubber emulsion and compound SBS latex.

Furthermore, the nano ZnO dispersion liquid has the solid content of the stock solution of 20-30%, the particle size of 30-100 nm and the pH value of 9-11.

Further, the solid content of the powder slurry is 50-60%, wherein the filler comprises one or more of nano light calcium carbonate, wollastonite, kaolin and mica powder, the particle size is 1250-3000 meshes, the powder slurry is composed of 49.5-58.5% of the filler, 0.5-1.5% of sodium bentonite, 0.25-0.35% of sodium hydroxide, 1.0-2.0% of ammonium polyacrylate dispersant, 0.3-1.0% of alkylphenol polyoxyethylene, 0.2-0.5% of isomeric alcohol polyoxyethylene, 0.06-0.1% of cosolvent, 0.3-0.5% of organosilicon defoamer and deionized water as the rest components.

Further, the rubber operation oil is compounded by one or more of aromatic hydrocarbon rubber operation oil, naphthenic base rubber operation oil and paraffin base rubber operation oil, the coupling agent is one or two of aminosilane coupling agent and methacryloxy silane coupling agent, the aqueous solution of the pH value regulator is AMP-95 multifunctional pH value neutralizer, the dispersing agent is fatty acid polyglycol ester, the emulsion mildew preventive is mildew-proof and algae-proof zinc pyrithione suspension (solid content is 50%) or is directly added after being diluted by deionized water for 3-4 times of RuCO-BAC AGL, and the defoaming agent is mineral oil defoaming agent (LT-466) or ML-A203E.

A preparation method of a quick-setting type polymer synthesis modified emulsified asphalt water shutoff agent comprises the following specific steps:

s1: preparing an anionic emulsified asphalt solution; heating softened water to 40 ℃, sequentially adding various emulsifiers, uniformly stirring (heating to 58-70 ℃), sequentially adding a pH value regulator, a stabilizer, a defoaming agent and the like, uniformly stirring, requiring that the pH value of a soap solution is more than or equal to 11, pumping into a 70A or 90A matrix asphalt heating tank, starting a heat conduction oil heating device to heat the mixture to a molten state, starting a stirring device to heat the mixture to 135-145 ℃ for later use, carrying out high-speed shearing, grinding and dispersing by a colloid mill, cooling to below 32 ℃ after secondary heat exchange to a transfer tank, filtering by a 80-mesh and 150-mesh steel wire filter screen, and pumping into a raw material storage tank for later use, wherein the particle size is required (D50 is less than or equal to 1.50 mu m, and D97 is less than or equal to 4.00 mu m);

s2: preparing a resin emulsion; before use, the complex blending performance of the resin emulsion is treated, and the pH value of the resin emulsion is greatly different and is balanced by adopting a pH regulator. The particle size distribution of the emulsion is between 30nm and 1200nm, the particle size of the emulsion is required (D50 is less than or equal to 700 nm), the emulsion is blended (low-speed dispersion stirring is carried out, the rotating speed is less than or equal to 200r/min, and the stirring time is not less than 10min after the feeding is finished), and the emulsion is filtered for later use;

s3: preparing rubber emulsion; before use, the complex blending performance of the composite material is treated, and the pH value has large difference, and a pH regulator is adopted for balance treatment. The particle size distribution of the emulsion is 200 nm-1500 nm, the particle size of the emulsion is required to be (D50 is less than or equal to 900 nm), the emulsion is blended (low-speed dispersion stirring is carried out, the rotating speed is less than or equal to 200r/min, the stirring time is not less than 15min after the feeding is finished), and the emulsion is filtered for later use;

s4: preparing nano ZnO dispersion liquid; dispersing and diluting the mixture to 5% -6% by 3-4 times of deionized water at a high speed before use, and then adding the mixture according to a formula;

s5: preparing powder slurry; stirring at a low speed (500-600 r/min), adding a small amount of sodium hydroxide cosolvent into deionized water to adjust the pH of the system to 11-12, adding sodium bentonite, and then accelerating to (2000-3000 r/min) to uniformly disperse the soil; then, reducing the speed to 500r/min, stirring, sequentially adding a polyacrylic acid ammonium salt dispersing agent, an alkyl polyoxyethylene ether (OP-20) nonionic surfactant, an isomeric tridecanol polyoxyethylene ether emulsifier (1308) nonionic surfactant, an 1/2 organic silicon defoaming agent (AG-351) nano light calcium carbonate, wollastonite and kaolin, raising the speed to high speed (2000-3000 r/min), dispersing for 30-40 min, and finally adding the rest 1/2 defoaming agent;

s6: the pH regulator aqueous solution is an AMP-95 multifunctional pH neutralizer, and is added after being dispersed and diluted at high speed by deionized water of 3-4 times before use; the dispersing agent is fatty acid polyglycol ester, and is added after being dispersed and diluted at a high speed by 5-7 times of deionized water before use; the emulsion mildew preventive is mildew-proof and algae-proof zinc pyrithione suspension (solid content is 50%) or is directly added in a formula after being diluted by deionized water by 3-4 times of a RuCO-BAC AGL; the defoaming agent is mineral oil defoaming agent (LT-466) or (ML-A203E), and is diluted by deionized water by 3-4 times and then directly added in the formula;

s7: driving surface active water into deionized water with the conductivity of less than 0.50mS/m, sequentially adding a nonionic sulfonate surfactant, a nonionic rosin acid soap surfactant, isomeric alcohol polyoxyethylene ether and an alkyl polyoxyethylene ether surfactant in specified proportions, uniformly stirring at a rotating speed of not less than 200r/min (the time length is not less than 7 minutes), adding an acetylenic diol wetting agent in specified proportions, and uniformly stirring at a rotating speed of not less than 300r/min (the time length is not less than 5 minutes) for uniform dispersion;

s8: starting a stirring device of the asphalt stirring tank body, and fixing the speed to 65-85 r/min until the emulsified asphalt solution is completely added, and then stirring for not less than 5 minutes; after the rubber operation oil and the powder slurry are sequentially and slowly added, the rotating speed is increased to 300-400 r/min, and the materials are uniformly stirred;

s9: starting a resin emulsion stirring tank device, setting the speed to 80-120 r/min, sequentially and respectively adding the resin emulsion and the pH value regulator, and stirring for not less than 5 minutes after all the resin emulsion and the pH value regulator are completely added;

s10: starting a latex stirring tank device, setting the speed to 80-120 r/min, sequentially and respectively adding the latex emulsion and the nano ZnO dispersion liquid, and stirring for not less than 5 minutes after the completion of the whole process; diluting and stirring a silane coupling agent by using 3-4 times of deionized water, adding the diluted silane coupling agent into a latex stirring tank, and increasing the stirring speed to 300-400 r/min for uniform dispersion for not less than 5 minutes;

s11: starting a reaction tank for stirring, controlling the stirring speed to be 120-150 r/min, pumping the mixed liquid of emulsified asphalt, rubber operating oil and powder slurry into a finished product reaction tank, sequentially adding the mixed resin emulsion and rubber emulsion, uniformly stirring, and stirring for not less than 5 minutes after the addition is finished;

s12: reducing the stirring speed of the reaction tank to 65-85 r/min, sequentially adding a dispersant aqueous solution, a defoaming agent aqueous solution, a mildew inhibitor aqueous solution and the like, and stirring for not less than 30 minutes after the addition is finished to complete production;

s13: filtering with 80 mesh metal filter screen, and packaging.

A construction method of a quick-setting type polymer synthesis modified emulsified asphalt water shutoff agent comprises the following specific steps:

after the underground oil layer is exploited to a certain degree, the exploitation difficulty is gradually increased along with the reduction of the pressure in the stratum; in order to exactly develop an oil layer, water is generally injected into the ground in a certain sequence to keep the formation pressure at the later stage, the oil layer is driven to the periphery of a developed oil well according to a preset scheme for exploitation, and in the later stage, the oil layer is dispersed from the position of the developed oil well to the periphery again along with the stop of water injection and returns to the far part of the formation, so that the oil layer is in a state of difficult exploitation again;

firstly, injecting surface-entering active water into the stratum of an oil well by using a high-pressure pump, continuously injecting the surface-entering active water into the stratum by high pressure, driving the mineralization water and an oil layer in the stratum into the periphery, continuously injecting the surface-entering active water after keeping a certain pressure to continuously drive the mineralization water and the oil layer nearby in the stratum away to a pre-exploitation position, injecting the rapid-setting synthetic high-molecular material modified emulsified asphalt oil well plugging agent by using the high-pressure pump after tightening, and keeping a certain pressure to enable the plugging agent to be filled to the full extent of surface activity and drive the surface-entering active water injection range; along with the later preset exploitation process of the oil well, along with the reduction of the formation pressure, the mineralization water and the oil layer of the formation can be refilled into the areas of surface active water and water shutoff agent, and at the moment, Na in the mineralization water⁺、Ca²⁺、Mg^{2 +}、K⁺The metal ions and the anionic high-molecular synthetic modified emulsified asphalt particles in the water plugging agent generate emulsion breaking reaction to form sticky microgel particles to block a larger mineralized water channel, so that an oil layer driven to a mining position does not flow back to the original position, and the oil production amount and the mining efficiency can be greatly improved; in addition, the plugging agent contains more asphalt components and is the same as the crude oil components, and the crude oil in the oil layer can dissolve plugging particles formed by the plugging agent in the later period, so that the stratum cannot be plugged, the exploitation life of the stratum can be effectively protected, the influence on drilling facilities can be reduced, and the infrastructure investment in the later period can be reduced.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects: the method is characterized in that high-salinity water exists in an oil extraction stratum environment, the porosity distribution of rock layers is different in size, when crude oil extraction is carried out in a water-flooding mode, water is continuously injected into the stratum, the crude oil can be driven into a preset oil well range through a certain distribution sequence, the crude oil is extracted from the preset oil well in a mode of continuously injecting high-pressure water to disperse and separate all around, and the like, so that the extraction efficiency is improved.

The pressure is continuously reduced along with the increase of time and the continuation of oil extraction work when high-pressure water is used for oil displacement, and after the pressure is reduced and reaches balance, an original oil layer driven in advance can slowly return to an original oil storage area, so that the effective extraction time is greatly shortened, the time length, the efficiency and the quantity of oil extraction are reduced, and the oil extraction difficulty is increased; the quick-setting type high polymer material is comprehensively adopted to synthesize the oil layer driven by the modified emulsified asphalt plugging agent, and demulsification gel particles generated by anion high-molecular mixed particles in the plugging agent and free metal ions in the stratum in the later stage block a return channel driven into the oil layer in the earlier stage, so that the pressure duration driven into the stratum is ensured to be long, longer time and exploitation efficiency are provided for oil exploitation work, and larger oil exploitation quantity is ensured; after the mining work is finished, slowly dissolving gel particles formed by the water plugging agent again along with the increase of time of a small amount of unexplored oil layers, so that the stratum is restored to be communicated, and the stratum of the oil extraction area is ensured not to be permanently plugged and damaged; in addition, the water shutoff agent also effectively improves the exploitation efficiency of an oil well, reduces the investment of oil well infrastructure caused by unsatisfactory exploitation effect and the like in the later period, and plays a very positive and important role in protecting the effective utilization of oil field resources in China, strengthening the national energy strategic safety and reducing the dependence on external energy.

The modified emulsified asphalt water plugging agent is synthesized by comprehensively adopting the quick-setting high polymer material with high Na content⁺、Ca²⁺、Mg²⁺、K⁺The gel mixed particles which are quickly separated out are quickly adsorbed on the surface of a rock stratum of the stratum to generate higher viscosity and strength, so that the micro pores of the stratum are blocked for a longer time, a return channel of a driven oil layer due to the reduction of the pressure of the stratum is blocked, the driven oil layer can be kept for a longer exploitation time, and the exploitation efficiency of an oil well is greatly improved. The synthetic high molecular material in the water shutoff agent is hydrolyzed by silane coupling agent to generate 1 of 3 silicon hydroxyl groups which are bonded with the surface of an oil layer rock stratum, and the rest 2 Si-OH groups are condensed with Si-OH in silane of a latex material without being condensed with Si-OH in silane of a latex materialBut greatly improves the comprehensive performance of the compound high polymer material and also increases the bonding strength of the material and the surface layer of the rock stratum, thereby obtaining better plugging effect. In addition, according to different conditions such as temperature, mineralization degree and porosity of rock stratum in oil layer geological conditions, a plurality of different synthetic high polymer materials are matched and compounded in the formula, so that different stratum environments are adapted to the different synthetic high polymer materials, the optimal plugging effect is obtained, and the maximum economic benefit and the maximum social benefit are obtained.

In addition, the integral compactness of the demulsified material and the initial strength of the material can be improved by adding the nano zinc oxide chemical cross-linking agent; the plugging level of the material to rock strata with different porosities can be improved by adding nano-scale and micron-scale powder slurry, powder slurry materials with different gradations are properly introduced to synthesize high-viscosity creep-state cementing materials formed by emulsified asphalt and high polymer materials after demulsification to wrap powder particles with different particle sizes, and a better plugging effect can be generated on pores with different sizes of underground rock strata; in addition, the powder slurry also has a good thickening effect, so that the layering problem caused by long storage time due to different specific gravities of different liquid materials can be prevented, and better construction convenience is provided for the site; the mildew preventive is added, so that the material is not easy to deteriorate under a longer storage condition, and the storage period is greatly prolonged to obtain a longer quality guarantee period; the dispersing agent is added, so that various materials in the formula can be distributed more uniformly in the whole system, and the production is quicker to achieve the expected dispersing effect; the addition of the defoaming agent can reduce more bubbles generated in production, construction and other links, as most materials in the material are anionic or nonionic materials, the material can generate more bubbles in stirring, dispersing, high-pressure pumping, pouring and other links, the influence on production and construction is large, and the influence of the processes can be effectively reduced by adding the proper defoaming agent, so that better production and construction experience is obtained, and the production and construction efficiency is greatly improved.

The patent adopts the zinc oxide as the nano-grade zinc oxide solution, not only can play a role in crosslinking, but also has the functions of shielding ultraviolet rays, absorbing infrared rays, sterilizing and the like, so that a small amount of antioxidant auxiliary agent is not added in a subsequent formula for regulation.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a process flow diagram of an anionic emulsified asphalt solution;

FIG. 2 is a flow chart of a preparation process of the modified emulsified asphalt oil well water shutoff agent synthesized by the rapid-setting type high polymer material.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.

In the several embodiments, the preparation processes of the anionic emulsified asphalt solution, the powder slurry, the water shutoff agent and the driving surface running water are the same, and the construction methods are the same, so that the parts are only described in detail in the first embodiment, and are not described in detail in other embodiments.

The first embodiment is as follows:

1. composition of

Composition of anionic emulsified bitumen solution (1000 kg formulation quantity as an example)

480kg of Jingbo 70A substrate asphalt, 7kg of middle-split quick-setting (LT-405A) tall oil anionic emulsifier, 5kg of middle-split quick-setting (PM-3372) potassium oleate anionic emulsifier, 2.0kg of nonionic alkylphenol polyoxyethylene ether emulsifier (OP-10), 2.5kg of isomeric tridecanol polyoxyethylene ether emulsifier (1310), 1.0kg of nonionic phosphate emulsifier (RE-610), 0.8kg of sodium carboxymethylcellulose (CMC), 0.6kg of organosilicon defoamer (BYK-024), 1.9kg of sodium hydroxide 50% aqueous solution and 499.2kg of softened water.

Composition of the slip (for example, 100 kg of the formulation quantity)

23kg of nano light calcium carbonate, 18kg of wollastonite, 14kg of kaolin, 0.3kg of sodium hydroxide 1.5, 1.8kg of polyacrylic ammonium salt dispersing agent, 0.6kg of alkyl polyoxyethylene ether (OP-20), 0.35kg of isomeric tridecanol polyoxyethylene ether emulsifier (1308), 0.3kg of organic silicon defoamer (AG-351) and 40.15kg of deionized water.

Composition of quick-setting type polymer material synthetic modified emulsified asphalt water shutoff agent (taking 1000 kg formula quantity as an example)

740kg of 70A quick-setting type anionic emulsified asphalt, 28kg of nonionic styrene-acrylic emulsion, 19kg of anionic aqueous styrene-acrylic copolymer emulsion, 23kg of aqueous polyurethane monomer emulsion, 61kg of carboxylic styrene-butadiene emulsion, 26kg of anionic chloroprene rubber emulsion, 33kg of anionic SBS rubber emulsion, 20kg of nano ZnO dispersion, 31.5kg of powder slurry, 6.0kg of paraffin-based rubber operating oil, 3.5kg of silane coupling agent, 4.8kg of AMP-95 multifunctional pH value regulator aqueous solution, 2.8kg of dispersing agent, 0.5kg of emulsion mildew preventive and 0.9kg of mineral oil defoamer.

Composition of driving meter running water (10000 kg as an example)

13kg of nonionic sulfonate surfactant, 68kg of nonionic sodium abietate surfactant, 10kg of isomeric tridecanol polyoxyethylene ether surfactant, 22kg of alkylphenol polyoxyethylene ether surfactant, 9kg of cosolvent, 10kg of acetylenic diol wetting agent and 9868kg of deionized water.

2. Preparation method

Preparation of anionic emulsified asphalt solution: adding metered deionized water or softened water into a soap solution tank, starting a low-speed stirring and heating device, heating the water to 40 ℃, then heating a quick-setting (SKF-62) sodium abietate anionic emulsifier, a medium-cracking quick-setting (PK-3372) potassium oleate anionic emulsifier, a nonionic alkylphenol polyoxyethylene ether emulsifier (OP-10), an isomeric tridecanol polyoxyethylene ether emulsifier (1310) and a nonionic phosphate emulsifier (RE-660) to 58-65 ℃, increasing the stirring speed, then sequentially and slowly adding a pH value regulator solution (50% of sodium hydroxide aqueous solution),

fully stirring sodium carboxymethylcellulose (CMC) until agglomeration can not occur, and finally adding a defoaming agent into a soap liquid tank to stir at a low speed until the mixture is completely uniform, wherein the soap liquid is clear liquid with good transparency and yellow color; pumping 70# A hot asphalt into an asphalt heating tank, starting a heat conduction oil heating device to heat the asphalt to a molten state, and then starting a stirring device to raise the temperature of the asphalt material to 135-145 ℃ for later use; starting the colloid mill stage to produce the anionic emulsified asphalt solution, performing secondary heat exchange to obtain the emulsified asphalt product reaching the required temperature, and filtering the emulsified asphalt product according to the requirement for later use.

Preparing powder slurry: stirring at a low speed (500-600 r/min), adding a small amount of sodium hydroxide cosolvent into deionized water to adjust the pH of the system to 11-12, adding sodium bentonite, and then accelerating to (2000-3000 r/min) to uniformly disperse the soil; then, the speed is reduced to 500r/min, the ammonium polyacrylate dispersant, the alkyl polyoxyethylene ether (OP-20) nonionic surfactant, the isomeric tridecanol polyoxyethylene ether emulsifier (1308) nonionic surfactant, the 1/2 organic silicon defoamer (AG-351) nano light calcium carbonate, wollastonite and kaolin are sequentially added while stirring, the mixture is raised to a high speed (2000-3000 r/min) and dispersed for 30-40 min, and finally, the rest 1/2 defoamer is added.

The preparation of the quick-setting type polymer material synthesized modified emulsified asphalt water shutoff agent comprises the following steps: starting an asphalt tank to stir at a low speed of 65-85 r/min, sequentially heating rubber operation oil and powder slurry and increasing the rotating speed to 300-400 r/min after 70# A quick-setting type anionic emulsified asphalt is finished for not less than 5 minutes, and completely and uniformly stirring a mixture flow; secondly, opening a resin emulsion stirring tank device, setting the speed to 80-120 r/min, sequentially and respectively adding the anionic waterborne styrene-acrylic copolymer emulsion, the waterborne polyurethane monomer emulsion and the pH value regulator, and stirring for not less than 5 minutes after all the anionic waterborne styrene-acrylic copolymer emulsion, the waterborne polyurethane monomer emulsion and the pH value regulator are completely added; starting a latex stirring tank device, setting the speed to 80-120 r/min, sequentially and respectively adding the anionic carboxylated styrene-butadiene emulsion, the anionic chloroprene rubber emulsion, the anionic SBS rubber emulsion and the nano ZnO dispersion liquid, and stirring for not less than 5 minutes after the completion of the whole process; adding the silane coupling agent diluted by deionized water into a latex tank, increasing the rotating speed to 300-400 r/min, and stirring for 5 minutes for later use; opening the reaction tank, controlling the rotating speed to be 120-150 r/min, pumping the emulsified asphalt, the rubber regulating oil and the powder slurry, uniformly stirring, adding the resin emulsion and the modified rubber emulsion, and continuously stirring for 5 minutes; fifthly, reducing the stirring speed of the reaction tank to 65-85 r/min, finally sequentially adding a dispersant aqueous solution, a defoaming agent aqueous solution, a mildew inhibitor aqueous solution and the like, and stirring for no less than 30 minutes after the addition is finished to complete production; filtering by a 80-mesh metal filter screen and then canning.

Preparing flooding surface running water: starting a stirrer of an activated water stirring tank, rotating at a speed of not less than 200r/min, immediately pumping 0.50mS/m deionized water, sequentially adding a specified proportion of a nonionic sulfonate surfactant, a nonionic rosin acid soap surfactant, an isomeric alcohol polyoxyethylene ether and an alkyl polyoxyethylene ether surfactant, stirring for not less than 7 minutes, finally increasing the rotating speed to 300r/min, adding a specified proportion of an alkynediol wetting agent, stirring for not less than 5 minutes until the activated water is completely and uniformly dispersed, and canning for later use.

3. Construction method

The method comprises the following steps of firstly injecting surface running water into a stratum by adopting a high-pressure pump according to a certain sequence and time in combination with the conditions of stratum pressure, oil well distribution and the like, wherein the injection quantity and the pressure duration are determined on site; the water plugging agent is injected immediately after the driving meter running water high-pressure injection of each injection point is finished, the injection pressure can be slowly increased along with the increase of time, and the peak value and the holding time of the pressure during injection are determined according to the pre-calculated injection amount; according to the pressure change monitored on site, etc., it is determined whether to regulate the injection sequence or the injection quantity, etc., and the oil production operation can be performed according to the predicted plan.

Example two:

1. composition of

Composition of anionic emulsified bitumen solution (1000 kg formulation quantity as an example)

522kg of Jingbo 70A substrate asphalt, 8.5kg of middle-split quick-setting (LT-405A) tall oil anionic emulsifier, 5.3kg of middle-split quick-setting (PM-3372) potassium oleate anionic emulsifier, 2.7kg of nonionic alkylphenol polyoxyethylene ether emulsifier (OP-10), 3.1kg of isomeric tridecanol polyoxyethylene ether emulsifier (1310), 1.3kg of nonionic phosphate emulsifier (RE-610), 1.0kg of sodium carboxymethylcellulose (CMC), 0.7kg of organosilicon defoamer (BYK-024), 2.1kg of sodium hydroxide 50% aqueous solution and 453.3kg of softened water.

Composition of the slip (for example, 100 kg of the formulation quantity)

22kg of nano light calcium carbonate, 18kg of wollastonite, 14kg of kaolin, 0.3kg of sodium hydroxide 1.5, 1.8kg of polyacrylic ammonium salt dispersing agent, 0.6kg of alkyl polyoxyethylene ether (OP-20), 0.35kg of isomeric tridecanol polyoxyethylene ether emulsifier (1308), 0.3kg of organic silicon defoamer (AG-351) and 41.15kg of deionized water.

Composition of quick-setting type polymer material synthetic modified emulsified asphalt water shutoff agent (taking 1000 kg formula quantity as an example)

705kg of 70A quick-setting type anionic emulsified asphalt, 44kg of nonionic styrene-acrylic emulsion, 18kg of anionic aqueous styrene-acrylic copolymer emulsion, 20kg of aqueous polyurethane monomer emulsion, 70kg of carboxyl styrene-butadiene emulsion, 25kg of anionic chloroprene rubber emulsion, 38kg of anionic SBS rubber emulsion, 24kg of nano ZnO dispersion, 37.5kg of powder slurry, 8.0kg of paraffin-based rubber operating oil, 3.4kg of silane coupling agent, 3.8kg of AMP-95 multifunctional pH value regulator aqueous solution, 2.0kg of dispersing agent, 0.5kg of emulsion mildew preventive and 0.8kg of mineral oil defoamer.

Composition of driving meter running water (10000 kg as an example)

14kg of nonionic sulfonate surfactant, 68.5kg of nonionic sodium abietate surfactant, 11kg of isomeric tridecanol polyoxyethylene ether surfactant, 26kg of alkylphenol polyoxyethylene ether surfactant, 9.5kg of cosolvent, 10.5kg of acetylenic diol wetting agent and 9860.5kg of deionized water.

Example three:

1. composition of

Composition of anionic emulsified bitumen solution (1000 kg formulation quantity as an example)

497kg of Jingbo 70A substrate asphalt, 8kg of middle-cracked quick-setting (LT-405A) tall oil anionic emulsifier, 5kg of middle-cracked quick-setting (PM-3372) potassium oleate anionic emulsifier, 2.5kg of nonionic alkylphenol polyoxyethylene ether emulsifier (OP-10), 3kg of isomeric tridecanol polyoxyethylene ether emulsifier (1310), 1.2kg of nonionic phosphate emulsifier (RE-610), 0.9kg of sodium carboxymethylcellulose (CMC), 0.6kg of organosilicon defoamer (BYK-024), 2kg of 50% sodium hydroxide aqueous solution and 479.8kg of softened water.

Composition of the slip (for example, 100 kg of the formulation quantity)

22.5kg of nano light calcium carbonate, 18kg of wollastonite, 14.5kg of kaolin, 0.3kg of sodium hydroxide 1.5, 1.8kg of polyacrylic ammonium salt dispersing agent, 0.6kg of alkyl polyoxyethylene ether (OP-20), 0.35kg of isomeric tridecanol polyoxyethylene ether emulsifier (1308), 0.3kg of organic silicon defoamer (AG-351) and 40.15kg of deionized water.

Composition of quick-setting type polymer material synthetic modified emulsified asphalt water shutoff agent (taking 1000 kg formula quantity as an example)

675kg of 70A quick-setting type anionic emulsified asphalt, 48kg of nonionic styrene-acrylic emulsion, 20kg of anionic aqueous styrene-acrylic copolymer emulsion, 25kg of aqueous polyurethane monomer emulsion, 76kg of carboxylic styrene-butadiene emulsion, 27kg of anionic chloroprene rubber emulsion, 42kg of anionic SBS rubber emulsion, 26kg of nano ZnO dispersion, 42.2kg of powder slurry, 7.5kg of paraffin-based rubber operating oil, 3.7kg of silane coupling agent, 4.3kg of AMP-95 multifunctional pH value regulator aqueous solution, 2.0kg of dispersing agent, 0.5kg of emulsion mildew preventive and 0.8kg of mineral oil defoamer.

Composition of driving meter running water (10000 kg as an example)

13kg of nonionic sulfonate surfactant, 67kg of nonionic sodium abietate surfactant, 10kg of isomeric tridecanol polyoxyethylene ether surfactant, 25.5kg of alkylphenol polyoxyethylene ether surfactant, 9.2kg of cosolvent, 10.3kg of acetylenic diol wetting agent and 9865kg of deionized water.

Example four:

1. composition of

Composition of anionic emulsified bitumen solution (1000 kg formulation quantity as an example)

490kg of medium sea oil 90A matrix asphalt, 18kg of fast setting (SKF-62) sodium abietate anionic emulsifier, 12kg of middle cracking fast setting (PM-3372) potassium oleate anionic emulsifier, 2kg of nonionic alkylphenol polyoxyethylene ether emulsifier (OP-10), 2.5kg of isomeric tridecanol polyoxyethylene ether emulsifier (1310), 1kg of nonionic phosphate emulsifier (RE-610), 0.8kg of sodium carboxymethylcellulose (CMC), 0.5kg of organosilicon defoamer (BYK-021), 2kg of sodium hydroxide 50% aqueous solution and 471.2kg of softened water.

Composition of the slip (for example, 100 kg of the formulation quantity)

23kg of nano light calcium carbonate, 19kg of wollastonite, 13.5kg of kaolin, 0.3kg of sodium hydroxide 1.2, 1.7kg of polyacrylic ammonium salt dispersing agent, 0.6kg of alkyl polyoxyethylene ether (OP-20), 0.35kg of isomeric tridecanol polyoxyethylene ether emulsifier (1308), 0.3kg of organic silicon defoamer (AG-351) and 40.05kg of deionized water.

Composition of quick-setting type polymer material synthetic modified emulsified asphalt water shutoff agent (taking 1000 kg formula quantity as an example)

645kg of 90A quick-setting anionic emulsified asphalt, 54kg of nonionic styrene-acrylic emulsion, 28kg of anionic aqueous styrene-acrylic copolymer emulsion, 33kg of aqueous polyurethane monomer emulsion, 85kg of carboxyl styrene-butadiene emulsion, 32kg of anionic chloroprene rubber emulsion, 40kg of anionic SBS rubber emulsion, 25kg of nano ZnO dispersion, 39.4kg of powder slurry, 6.5kg of paraffin-based rubber operating oil, 3.3kg of silane coupling agent, 5kg of AMP-95 multifunctional PH value regulator aqueous solution, 2.3kg of dispersing agent, 0.6kg of emulsion mildew preventive and 0.9kg of mineral oil defoaming agent.

Composition of driving meter running water (10000 kg as an example)

13kg of nonionic sulfonate surfactant, 65kg of nonionic sodium abietate surfactant, 6kg of isomeric tridecanol polyoxyethylene ether surfactant, 27kg of alkylphenol polyoxyethylene ether surfactant, 9kg of cosolvent, 10kg of acetylenic diol wetting agent and 9870kg of deionized water.

Example five:

1. composition of

Composition of anionic emulsified bitumen solution (1000 kg formulation quantity as an example)

490kg of medium sea oil 90A matrix asphalt, 18kg of fast setting (SKF-62) sodium abietate anionic emulsifier, 12kg of middle cracking fast setting (PM-3372) potassium oleate anionic emulsifier, 2kg of nonionic alkylphenol polyoxyethylene ether emulsifier (OP-10), 2.5kg of isomeric tridecanol polyoxyethylene ether emulsifier (1310), 1kg of nonionic phosphate emulsifier (RE-610), 0.8kg of sodium carboxymethylcellulose (CMC), 0.5kg of organosilicon defoamer (BYK-021), 2kg of sodium hydroxide 50% aqueous solution and 471.2kg of softened water.

Composition of the slip (for example, 100 kg of the formulation quantity)

23kg of nano light calcium carbonate, 19kg of wollastonite, 13.5kg of kaolin, 0.3kg of sodium hydroxide 1.2, 1.7kg of polyacrylic ammonium salt dispersing agent, 0.6kg of alkyl polyoxyethylene ether (OP-20), 0.35kg of isomeric tridecanol polyoxyethylene ether emulsifier (1308), 0.3kg of organic silicon defoamer (AG-351) and 40.05kg of deionized water.

Composition of quick-setting type polymer material synthetic modified emulsified asphalt water shutoff agent (taking 1000 kg formula quantity as an example)

615kg of 90A quick-setting type anionic emulsified asphalt, 59kg of nonionic styrene-acrylic emulsion, 33kg of anionic aqueous styrene-acrylic copolymer emulsion, 38kg of aqueous polyurethane monomer emulsion, 90kg of carboxyl styrene-butadiene emulsion, 37kg of anionic chloroprene rubber emulsion, 45kg of anionic SBS rubber emulsion, 25kg of nano ZnO dispersion, 40kg of powder slurry, 6.2kg of paraffin-based rubber operating oil, 3.3kg of silane coupling agent, 5kg of AMP-95 multifunctional pH value regulator aqueous solution, 2.3kg of dispersing agent, 0.4kg of emulsion mildew preventive and 0.8kg of mineral oil defoaming agent.

Composition of driving meter running water (10000 kg as an example)

11kg of nonionic sulfonate surfactant, 62kg of nonionic sodium abietate surfactant, 6kg of isomeric tridecanol polyoxyethylene ether surfactant, 25kg of alkylphenol polyoxyethylene ether surfactant, 8kg of cosolvent, 9kg of acetylenic diol wetting agent and 9888kg of deionized water.

Example six:

650kg of medium sea oil 70A substrate asphalt, 9kg of medium-fracture quick-setting (LT-405A) tall oil anionic emulsifier, 7kg of medium-fracture quick-setting (PM-3372) potassium oleate anionic emulsifier, 2.5kg of nonionic alkylphenol polyoxyethylene ether emulsifier (OP-10), 3.0kg of isomeric tridecanol polyoxyethylene ether emulsifier (1310), 1.5kg of nonionic phosphate emulsifier (RE-610), 0.6kg of sodium carboxymethylcellulose (CMC), 0.7kg of organosilicon defoamer (BYK-024), 2.2kg of sodium hydroxide 50% aqueous solution and 323.5kg of softened water.

Composition of the slip (for example, 100 kg of the formulation quantity)

22kg of nano light calcium carbonate, 17kg of wollastonite, 13kg of kaolin, 0.3kg of sodium hydroxide 1.5kg of sodium bentonite, 1.8kg of polyacrylic ammonium salt dispersing agent, 0.6kg of alkyl polyoxyethylene ether (OP-20), 0.35kg of isomeric tridecanol polyoxyethylene ether emulsifier (1308), 0.3kg of organic silicon defoamer (AG-351) and 43.15kg of deionized water.

Composition of quick-setting type polymer material synthetic modified emulsified asphalt water shutoff agent (taking 1000 kg formula quantity as an example)

580kg of 70A quick-setting type anionic emulsified asphalt, 65kg of nonionic styrene-acrylic emulsion, 52kg of anionic aqueous styrene-acrylic copolymer emulsion, 46kg of aqueous polyurethane monomer emulsion, 91.5kg of carboxyl styrene-butadiene emulsion, 26kg of anionic chloroprene rubber emulsion, 52kg of anionic SBS rubber emulsion, 26kg of nano ZnO dispersion, 38.5kg of powder slurry, 8.5kg of paraffin-based rubber operating oil, 3.5kg of silane coupling agent, 6.5kg of AMP-95 multifunctional pH value regulator aqueous solution, 3.0kg of dispersing agent, 0.5kg of emulsion mildew preventive and 1.0kg of mineral oil defoamer.

Composition of driving meter running water (10000 kg as an example)

15kg of nonionic sulfonate surfactant, 72kg of nonionic sodium abietate surfactant, 12kg of isomeric tridecanol polyoxyethylene ether surfactant, 25kg of alkylphenol polyoxyethylene ether surfactant, 10kg of cosolvent, 12kg of acetylenic diol wetting agent and 9854kg of deionized water.

And (3) performance testing:

1. plugging pressure test

In the following plugging pressure tests, the quick-setting polymer material synthetic modified emulsified asphalt plugging agent and the driving surface active water are injected into a sand filling pipe by the following steps of injecting 1 time of driving surface active water and then injecting 0.8 time (12.5% of the concentration of the plugging agent) of the quick-setting polymer material synthetic modified emulsified asphalt plugging agent into the sand filling pipe for plugging pressure tests.

And (3) measuring the plugging pressure:

the measurement of the occlusion pressure was carried out as follows:

taking a sand filling pipe, putting the sand filling pipe into a drying oven with the temperature of 65 ℃ for constant temperature heating for 2 hours, and sequentially driving surface water and rapidly solidifying high polymer material into the modified emulsified asphalt water plugging agent according to the proportion of 0.40ml/min/cm²Is injected at a rate of (wherein per cm)²Aiming at the sectional area of the sand filling pipe), the injection pressure is 0.20MPa, 2PV surface active flooding water is injected firstly, then 1.6PV (12.5% concentration water plugging agent) is injected for displacement, the time is stopped, the sand filling pipe is kept still for 48 hours, then deionized water is adopted for flooding to ensure that the sand filling pipe has water permeability again, and the maximum pressure value before water permeation is recorded. The specific results are shown in the following table:

as shown in the table above, when the content of the emulsified asphalt in the water shutoff agent formulation was changed, the shutoff pressure was significantly changed. Along with the continuous reduction of the content of the emulsified asphalt and the continuous promotion of the content of the high molecular polymer, the plugging pressure is in a trend of obviously rising.

Wherein, when the content of the polymer resin emulsion is higher and the synthetic rubber emulsion is lower, the pressure rise is smaller, otherwise, the pressure rise is larger; the effect of the high molecular resin emulsion on the pressure increase is smaller than that of the synthetic rubber emulsion in the whole water shutoff agent; according to the situation, the aim of more accurately adjusting the plugging pressure can be achieved by adjusting the content of different emulsions.

2. Resistance to scouring test

Taking a sand filling pipe, and putting the sand filling pipe into a 65 ℃ oven to be heated for 2 hours at constant temperature; the permeability (pre-injection permeability) was measured by a test method commonly used in the art; then the surface water and the quick-setting polymer material are driven into the modified emulsified asphalt water plugging agent in turn according to the proportion of 0.40ml/min/cm²Is injected at a rate of (wherein per cm)²For the sectional area of the sand-filled pipe), the injection pressure is 0.20MPa, the injection is stopped after 0.1PV, the time is kept still for 48 hours, then 50000 mineralization degree water is used for replacing 30PV, the change of permeability is measured, and the final plugging rate is calculated. The specific results are shown in the following table:

as can be seen from the above table, all of the plugging agents of the present invention have relatively good final plugging rate and washout resistance after 30PV washout, but the sixth example among them has the best washout resistance; when the content of the synthetic high molecular polymer emulsion is increased continuously, the final plugging rate is also slightly increased, but the total change is not large.

3. Viscosity measurement at high temperature

Firstly, pouring 160ml of absolute ethyl alcohol into a 500ml beaker, slowly adding 80g of water shutoff agent, standing for 10min, and then pouring out the liquid in the beaker; repeating the above operation twice with anhydrous ethanol, heating the obtained water shutoff agent, removing residual anhydrous ethanol and water, heating the beaker with the water shutoff agent in 90 deg.C water bath for 1h, and removing residual anhydrous ethanol in the beaker. Then the beaker is put into an oven at 105 ℃ for 4 hours for standby. And (3) adding 10g of the obtained solid water plugging agent into a DV-III rheometer, starting a viscometer temperature control power supply, setting the temperature to be 90 ℃, keeping the temperature for 30min, carrying out viscosity measurement, and averaging for three times. Specific results are shown in the following table (rounding to the hundreds positions):

as can be seen from the above table, the solid component after the water shutoff agent is dried has a higher viscosity value under a high temperature condition, and has better plugging strength for formation pores, the viscosity value increases in a slightly increasing trend along with the increase of the overall proportion of the synthetic polymer emulsion and the fine adjustment of the addition of the corresponding auxiliary agent, and the plugging viscosity of the water shutoff agent can be properly adjusted according to the formation temperature condition, so that a better oil displacement effect is obtained, and better economic benefit is obtained.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means 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 the invention. In this specification, the schematic representations of the terms used above do not necessarily 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.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.