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Special rheological auxiliary agent for clean fracturing fluid

A technology for cleaning fracturing fluid and fluid recovery aid, applied in the field of fracturing fluid, can solve the problems of poor shear resistance, poor anti-freezing effect, inconvenient production, etc., so as to improve temperature resistance and shear resistance. , the effect of improving frost resistance

Inactive Publication Date: 2019-10-08
SICHUAN BAO LIN NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of the traditional special reflowing aid for clean fracturing fluid existing in the prior art. Inconvenient, low utilization rate of each raw material, cumbersome production and operation problems, and a special fluid reconstitution agent for clean fracturing fluid is proposed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A special flow reconstitution aid for clean fracturing fluid, the formula of the special flow reconstitution aid for clean fracturing fluid is composed of the following components in parts by weight: 2 parts of octylphenol ether, 3 parts of regulator, temperature-resistant enhancer 4 parts, 5 parts of co-solvent, biological enzyme gel breaker consisting of 20 parts of galactomannan enzyme solution, 3 parts of hydroxyalkyl chitosan, 2 parts of tetramethylammonium clathrate polysilsesquioxane, N - 3 parts of dimethyl-N-propyl sulfobetaine, 2 parts of cis-docos-9-enoic acid amidopropyl, 3 parts of N-dimethylcarboxybetaine.

[0031] Further, the pH value of the regulator is 8, the thickener is composed of stearamidopropyl dimethylamine, coconut oil fatty acyl diethanolamine, and stearamidopropyl dimethylamine, coconut oil fatty acyl Diethanolamine is 2:1 by weight.

[0032] Further, the temperature resistance enhancer is composed of sodium octadecyl toluene sulfonate, sodi...

Embodiment 2

[0047] A special flow reconstitution aid for clean fracturing fluid, the formula of the special flow reconstitution aid for clean fracturing fluid is composed of the following components in parts by weight: 4 parts of octylphenol ether, 5 parts of regulator, temperature-resistant enhancer 8 parts, 7 parts of co-solvent, biological enzyme gel breaker consisting of 30 parts of galactomannan enzyme solution, 7 parts of hydroxyalkyl chitosan, 6 parts of tetramethylammonium clathrate polysilsesquioxane, N - 6 parts of dimethyl-N-propyl sulfobetaine, 8 parts of cis-docos-9-enoic acid amidopropyl, 9 parts of N-dimethylcarboxybetaine.

[0048] Further, the pH value of the regulator is 10, the thickener is composed of stearamidopropyl dimethylamine, coconut oil fatty acyl diethanolamine, and stearamidopropyl dimethylamine, coconut oil fatty acyl Diethanolamine is 2:1 by weight.

[0049]Further, the temperature resistance enhancer is composed of sodium octadecyl toluene sulfonate, sodi...

Embodiment 3

[0064] A special flow reconstitution aid for clean fracturing fluid, the formula of the special flow reconstitution aid for clean fracturing fluid is composed of the following components in parts by weight: 3 parts of octylphenol ether, 4 parts of regulator, temperature-resistant enhancer 6 parts, 6 parts of co-solvent, biological enzyme gel breaker consists of 25 parts of galactomannan enzyme solution, 5 parts of hydroxyalkyl chitosan, 4 parts of tetramethylammonium clathrate polysilsesquioxane, N - 5 parts of dimethyl-N-propyl sulfobetaine, 6 parts of cis-docos-9-enoic acid amidopropyl, 7 parts of N-dimethylcarboxybetaine.

[0065] Further, the pH value of the regulator is 9, the thickener is composed of stearamidopropyl dimethylamine, coconut oil fatty acyl diethanolamine, and stearamidopropyl dimethylamine, coconut oil fatty acyl Diethanolamine is 2:1 by weight.

[0066] Further, the temperature resistance enhancer is composed of sodium octadecyl toluene sulfonate, sodium...

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PUM

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Abstract

The invention discloses a special rheological auxiliary agent for a clean fracturing fluid. The special rheological auxiliary agent for the clean fracturing fluid comprises the following components, in parts by weight: 2-4 parts of octylphenol ether, 3-5 parts of a modifier, 4-8 parts of a temperature-resistant enhancing agent, 5-7 parts of a cosolvent, 20-30 parts of a biological enzyme gel breaker galactomannanase solution, 3-7 parts of hydroxyalkyl chitosan, 2-6 parts of oktakis(tetramethylammonium)-T8-silisesquioxane, 3-6 parts of N-dimethyl-N-propylsulfonic acid betaine, 2-8 parts of cis-docosa-9-enoic acid amido propyl, and 3-9 parts of N-dimethyl carboxylic acid betaine. According to the solution provided by the invention, through the interaction of the above raw materials, the special rheological auxiliary agent with good quality for the clean fracturing fluid can be prepared, and the anti-freezing property, shear resistance and solubility of the rheological auxiliary agent areimproved; and through a series of operation such as material preparation, stirring, standing, secondary stirring, secondary material addition, assisted dissolution, cooling and packaging, the specialrheological auxiliary agent with the good quality for the clean fracturing fluid can be prepared, and the operation is simple.

Description

technical field [0001] The invention belongs to the technical field of fracturing fluids, and more specifically relates to a special refluxing agent for cleaning fracturing fluids. 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] The hydraulic fracturing process of the oil layer is to use a high-pressure and large-displacement pump on the ground, and use the principle of liquid pressure transmission to inject a liquid with a certain viscosity (usually called fracturing fluid) into the oil layer with a pressure greater than the absorption capacity of the oil layer. Injection, and gradually increase the pressure in the we...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/68C09K8/88C09K8/90
CPCC09K8/68C09K8/885C09K8/905
Inventor 孙常武赵荣茂
Owner SICHUAN BAO LIN NEW MATERIAL TECH