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Environment-friendly drag reducing agent for fracturing, and preparation method thereof

A drag reducing agent and environmental protection technology, applied in the field of environmental protection drag reducing agent for fracturing, can solve the problems of high current danger, unsatisfactory surface interfacial tension and toxicity of drag reducing agent, and achieve ultra-low surface interfacial tension and high resistance reduction. efficiency, ease of use

Inactive Publication Date: 2020-02-11
BEIJING SHENGCHANG CENTURY PETROLEUM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the main components of the above-mentioned patents are mainly homoacrylamide, which is toxic and presents a greater danger, and the surface and interfacial tension of the drag-reducing agent of the above-mentioned patent is not ideal

Method used

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  • Environment-friendly drag reducing agent for fracturing, and preparation method thereof
  • Environment-friendly drag reducing agent for fracturing, and preparation method thereof
  • Environment-friendly drag reducing agent for fracturing, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] An environmentally friendly drag reducer for fracturing, its composition and the mass percentage of each composition are:

[0032] Geminiquat 10%

[0033] Fatty alcohol polyoxyethylene ether 15%

[0034] Polyoxyethylene resin 0.5%

[0035] Alkyl Sulfonate 15%

[0036] Nonionic Carboxylate Surfactant 3%

[0037] Cloud point depressant 1%

[0038] Anion and cation phase transfer agent 1%

[0039] The rest is water.

[0040] Among them, the gemini quaternary ammonium salt is Among them, R is a dodecyl group, R1 is a methyl group, R2 is a hexadecyl group, and X is a chlorine atom; fatty alcohol polyoxyethylene ether RO(CH 2 CH 2 O) n H molecular weight 2 million, alkylsulfonate RO(CH 2 CH 2 O) n SO 3 Na(R=C12 alkyl, n=2), the carboxylate surfactant is a non-ionic natural carboxylate surfactant, the cloud point depressant is erucamide propyl betaine, and the anion-cation phase transfer agent is ten Dialkyltrimethylbenzyl ammonium chloride.

[0041] The prepar...

Embodiment 2

[0044] An environmentally friendly drag reducer for fracturing, its composition and the mass percentage of each composition are:

[0045] Geminiquat 10%

[0046] Fatty alcohol polyoxyethylene ether 10%

[0047] Polyoxyethylene resin 0.5%

[0048] Alkyl Sulfonate 10%

[0049] Nonionic Carboxylate Surfactant 3%

[0050] Cloud point depressant 1%

[0051] Anion and cation phase transfer agent 1%

[0052] The rest is water.

[0053] Among them, the gemini quaternary ammonium salt is Wherein, R is a dodecyl group, R1 is a methyl group, R2 is a hexadecyl group, and X is a chlorine atom;

[0054] The molecular weight of fatty alcohol polyoxyethylene ether is 2 million, alkylsulfonate RO(CH 2 CH 2 O) n SO 3 In Na, R=C12 alkyl, n=2, the cloud point depressant is cocamidopropyl sulfobetaine, and the anion-cation phase transfer agent is dodecyltrimethylbenzyl ammonium chloride.

[0055]The preparation method of environmentally friendly drag reducer for fracturing: first add ...

Embodiment 3

[0058] An environmentally friendly drag reducer for fracturing, its composition and the mass percentage of each composition are:

[0059] Geminiquat 10%

[0060] Fatty alcohol polyoxyethylene ether 15%

[0061] Polyoxyethylene resin 0.5%

[0062] Sulfonate 15%

[0063] Nonionic Carboxylate Surfactant 3%

[0064] Cloud point depressant 1%

[0065] Anion and cation phase transfer agent 1%

[0066] The rest is water.

[0067] Among them, the gemini quaternary ammonium salt is Wherein, R is a dodecyl group, R1 is a methyl group, R2 is a hexadecyl group, and X is a chlorine atom;

[0068] The molecular weight of fatty alcohol polyoxyethylene ether is 4 million, and the sulfonate RO(CH 2 CH 2 O) n SO 3 Na, wherein R=C12 alkyl, n=2, the cloud point depressant is erucamide propyl sulfobetaine, and the anion-cation phase transfer agent is dodecyltrimethylbenzyl ammonium chloride.

[0069] The preparation method of environmentally friendly drag reducer for fracturing: first...

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Abstract

The invention relates to an environment-friendly drag reducing agent for fracturing, and a preparation method thereof, wherein the environment-friendly drag reducing agent comprises, by weight, 0.1-17parts of a gemini quaternary ammonium salt, 8-55 parts of fatty alcohol polyoxyethylene ether, 0.4-0.7 part of a polyoxyethylene resin, 1.4-50 parts of sulfonate, 1.4-5.0 parts of a nonionic naturalcarboxylate surfactant, 0.2-2.5 parts of a cloud point inhibitor, 0.5-2.4 parts of an anion-cation phase transfer agent and 5-90 parts of water. According to the invention, the environment-friendly drag reducing agent is non-toxic and harmless to the environment and people, meets the national environmental protection policy, and has advantages of ultralow surface and interface tension, suitabilityfor slickwater hydraulic fracturing, sterilization function, storage stability, convenient use and the like.

Description

technical field [0001] The invention relates to the application field of oil field chemistry, in particular to a composition and a preparation method of an environmentally friendly drag reducer for fracturing, which has good biodegradability, ultra-low surface and interfacial tension, is suitable for slick water hydraulic fracturing, and is supplemented with a bactericidal function. Background technique [0002] The grade of oil and gas resources is gradually decreasing, and the exploration and development of low-permeability reservoirs, tight oil, shale gas and coalbed methane are increasing, and fracturing is an effective means to open oil and gas channels, and it is a conventional measure for increasing production of these low-permeability reservoirs. Slick water fracturing can increase the probability of shear fracture formation, is conducive to the formation of network fractures, greatly improves the fracture volume and post-fracture effect, and is low in cost. Slick wat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/68C09K8/88C09K8/60
CPCC09K8/604C09K8/68C09K8/885
Inventor 牛文彬郭子义熊廷松陈君
Owner BEIJING SHENGCHANG CENTURY PETROLEUM TECH
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