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Low-tension hydroxyoximido emulsion oil-displacement polymer and preparation method thereof

An oil-displacing polymer and low-tension technology, applied in drilling compositions, chemical instruments and methods, etc., can solve the problem of reducing the interfacial tension of emulsion polymer oil-displacing product system, poor solution uniformity and fluidity, and oil-displacing effect. It can reduce the ground investment, dissolve quickly, and reduce the investment in ground construction.

Active Publication Date: 2016-04-20
山东金智瑞新材料发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, these polyacrylamide polymer oil displacement products currently used have problems such as slow dissolution rate, poor solution uniformity and fluidity, poor viscosity increasing effect, and poor oil displacement effect. Therefore, it is urgent to research and develop high viscosity, low tension. , High-efficiency new emulsion polymer oil flooding product, through the unique structure design and emulsion polymerization method of copolymerization containing multiple modified functional groups, polymer elements with emulsification function, phase stabilization function, and surface active substances are introduced in the emulsion polymerization process. To achieve rapid dissolution, viscosity increase and shear resistance of emulsion polymer flooding products, effectively reduce the interfacial tension of the emulsion polymer flooding product system, improve the fluidity and oil washing ability of the solution, and improve oil recovery

Method used

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  • Low-tension hydroxyoximido emulsion oil-displacement polymer and preparation method thereof
  • Low-tension hydroxyoximido emulsion oil-displacement polymer and preparation method thereof
  • Low-tension hydroxyoximido emulsion oil-displacement polymer and preparation method thereof

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Embodiment 1

[0048] The low-tension hydroxime-based emulsion flooding polymer provided in this embodiment consists of the following components: acrylamide, acrylic acid, water, liquid caustic soda, 2-acrylamido-2-methylpropanesulfonic acid, methylene bis Allylamine, potassium bromate, sodium formate, pentasodium diethylenetriamine pentaacetate, copper sulfate pentahydrate, white oil D110, algin oleamide, Span-80, Tween-81, emulsifying dispersant OA90, azo, hydroxylamine sulfate, isomer Cetyloxyethylene ether.

[0049] The content of each component in parts by weight is:

[0050] 80~180 parts of acrylamide

[0051] Acrylic 50~100 parts

[0052] 50~180 parts of water

[0053] 50~100 parts of liquid caustic soda

[0054] 10-40 parts of 2-acrylamido-2-methylpropanesulfonic acid

[0055] 0.002~0.008 parts of methylene bis allylamine

[0056] 20-50 parts of hydroxylamine sulfate

[0057] 0.055 parts of potassium bromate

[0058] 0.140 parts of sodium formate

[0059] 0.800 parts of pentasodium diethylenetriam...

Embodiment 2

[0118] The preparation method of the low tension hydroxime-based emulsion oil displacement polymer provided in the second embodiment of the present invention includes:

[0119] (1) Add water, acrylamide, acrylic acid, and liquid caustic soda sequentially to 2-acrylamido-2-methylpropanesulfonic acid to neutralize the pH to the preset range, and control the temperature of the whole process to be lower than 50 degrees to form a reaction liquid;

[0120] (2) Add white oil D110, Alginolamide, Span 80, Tween 81, emulsifying and dispersing agent OA90, and azo to the reaction solution in sequence, and dissolve potassium bromate, sodium formate, and copper sulfate pentahydrate in an appropriate amount of water. Add the reaction liquid; in this example, the algin oleamide is obtained by extracting triglycerides from microalgae, adding liquid ammonia, and reacting for 10 hours at 1 Mpa and 150 degrees. (3) Emulsify with an emulsifier to a viscosity of 800~1200mPa·s, blow nitrogen for 20~60 mi...

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Abstract

The invention discloses a low-tension hydroxyoximido emulsion oil-displacement polymer and a preparation method thereof. The low-tension hydroxyoximido emulsion oil-displacement polymer is composed of acrylamide, acrylic acid, water, liquid caustic soda, 2-acrylamido-2-methylpropyl sulfonic acid, methylene-bis acrylamine, potassium bromate, sodium formate, pentasodium diethylene triamine pentaacetate, chalcanthite, hydroxylamine sulfate, white oil D110, alga oleamide, Span-80, Tween-81, an emulsifying and dispersing agent OA90, azo and isohexadecyl ethylene oxide ether. The low-tension hydroxyoximido emulsion oil-displacement polymer has high molecular-weight and high solid content, is endowed with high-polymer main chain polyfunctional groups, and is an instant-dissolution reverse-phase microemulsion product with favorable stability and low tension.

Description

Technical field [0001] The invention relates to the technical field of new organic polymer chemical materials, in particular to a low-tension hydroxime-based emulsion oil displacement polymer and a preparation method thereof. Background technique [0002] Petroleum is a non-renewable fossil energy, and its recovery factor is the most concerned issue of the petroleum industry and the entire industry. In oil extraction, the use of natural energy from the reservoir to extract oil is called primary oil recovery. In this case, the recovery rate is generally only about 15%. In the later stage, water injection or immiscible gas injection can be used to increase the pressure of the reservoir and displace the crude oil in the reservoir. This method is called secondary oil recovery. At present, secondary oil recovery can reach 30%-40% oil recovery, even as high as 80%. However, with the continuous injection of water, it is not economical to continue water injection when the water content...

Claims

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Application Information

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IPC IPC(8): C08F220/56C08F220/06C08F220/58C08F222/38C08F2/32C09K8/588C09K8/584
CPCC08F2/32C08F220/06C08F220/56C09K8/584C09K8/588C08F220/585C08F222/385
Inventor 李亮王海超吕明冯玉军李福利
Owner 山东金智瑞新材料发展有限公司
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