Thickening agent for fracturing fluid, preparation method thereof and fracturing fluid

A thickening agent, fracturing fluid technology, applied in chemical instruments and methods, drilling composition and other directions, can solve problems such as unusability, oil separation, etc., achieve good fluidity and prevent wall hanging phenomenon.

Inactive Publication Date: 2019-07-19
DAQING AOPUQI CHEM ADDITIVES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the above problems that the thickener is easy to separate from oil and liquid and cannot be used at low temperature, the following scheme is adopted:

Method used

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  • Thickening agent for fracturing fluid, preparation method thereof and fracturing fluid
  • Thickening agent for fracturing fluid, preparation method thereof and fracturing fluid
  • Thickening agent for fracturing fluid, preparation method thereof and fracturing fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 1) At room temperature, add aviation kerosene, Span 80, and stir at 600 rpm for 15 minutes;

[0045] 2) Then, add polyacrylamide and stir at a speed of 150rpm for 40 minutes;

[0046] 3) Then, add cetyltrimethylammonium bromide and sodium dodecylbenzenesulfonate, and stir at a speed of 150rpm for 8 minutes;

[0047] 4) Then, add ethylene glycol and stir for 10 minutes at a speed of 150 rpm.

[0048] During the above preparation process,

[0049] Aviation kerosene accounts for 20.0% of the mass,

[0050] Polyacrylamide accounts for 35.0% of the mass, is a powder, and has a viscosity-average molecular weight of 6 million.

[0051] Span 80 accounts for 5.0% of the total mass,

[0052] Cetyltrimethylammonium bromide accounts for 0.8% of the mass,

[0053] Sodium dodecylbenzenesulfonate accounts for 0.8% by mass,

[0054] Ethylene glycol accounts for 6.0% of the mass,

[0055] The balance is water.

[0056] Take out the thickener prepared above and send it for inspec...

Embodiment 2

[0061] 1) At room temperature, add aviation kerosene, Span 80, and stir at 600 rpm for 15 minutes;

[0062] 2) Then, add polyacrylamide and stir for 30 minutes at a speed of 200rpm;

[0063] 3) Then, add cetyltrimethylammonium bromide and sodium dodecylbenzenesulfonate, and stir at a speed of 150rpm for 8 minutes;

[0064] 4) Then, add ethylene glycol and stir for 10 minutes at a speed of 150 rpm.

[0065] During the above configuration process,

[0066] Aviation kerosene accounts for 22.0% of the total mass,

[0067] Polyacrylamide accounts for 38.0% of the total mass. The powder has a viscosity-average molecular weight of 6 million.

[0068] Span 80 accounts for 4.0% of the total mass,

[0069] Cetyltrimethylammonium bromide accounts for 0.5% of the total mass,

[0070] Sodium dodecylbenzenesulfonate accounts for 0.5% of the total mass,

[0071] Ethylene glycol accounts for 5.0% of the total mass,

[0072] The balance is water.

[0073] Take out the thickener prepare...

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Abstract

The invention provides a thickening agent for a fracturing fluid, a preparation method of the thickening agent and the fracturing fluid. The thickening agent comprises the following components in percentage by mass: 18.0%-22.0% of aviation kerosene, 32.0%-38.5% of polyacrylamide, 4.0%-6.0% of an emulsifier, 0.5%-1.0% of cetyl trimethyl ammonium bromide, 0.5%-1.0% of sodium dodecyl benzene sulfonate, 5.0%-8.0% of ethylene glycol, and the balance of water. After being stored and transported for a long time, the thickening agent is still uniform, does not have obvious oil-liquid separation, and still has good fluidity at-30 DEG C. After being used, the fracturing fluid prepared by the thickening agent has no obvious wall-hanging phenomenon.

Description

technical field [0001] The invention relates to the field of oil and gas field exploitation, in particular to a thickener for fracturing fluid. Background technique [0002] Fracturing fluid refers to a heterogeneous and unstable chemical system formed by various additives in a certain ratio. It is a working fluid used in fracturing oil and gas reservoirs. Its main function is to transmit the high pressure formed by ground equipment. into the formation, fractures the formation to form fractures and transports proppant along the fractures. [0003] At present, water-based fracturing fluids are prepared by adding thickeners and additives to water as a solvent or dispersion medium. Three kinds of water-soluble polymers are mainly used as thickeners, namely plant gums (guar gum, quince, konjac, etc.), cellulose derivatives and synthetic polymers. These kinds of polymers swell into sols in water, and form gels with extremely high viscosity after cross-linking. It has the advan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/68
CPCC09K8/68
Inventor 田军章继男谭洪庆刘磊
Owner DAQING AOPUQI CHEM ADDITIVES
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