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Composition for preparing fracturing thickening agent, fracturing thickening agent and preparation method of fracturing thickening agent

A technology of composition and thickening agent, which is applied in the direction of drilling composition, chemical instrument and method, etc., to achieve the effects of remarkable salt resistance and temperature resistance, less damage to cores, and good viscoelasticity

Active Publication Date: 2021-10-29
SHANDONG NUOER BIOLOGICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the temperature and salt resistance performance of existing fracturing fluid thickeners needs to be further improved

Method used

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  • Composition for preparing fracturing thickening agent, fracturing thickening agent and preparation method of fracturing thickening agent
  • Composition for preparing fracturing thickening agent, fracturing thickening agent and preparation method of fracturing thickening agent
  • Composition for preparing fracturing thickening agent, fracturing thickening agent and preparation method of fracturing thickening agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0099] This embodiment provides a fracturing thickener, and the raw material formula of the fracturing thickener is shown in Table 1;

[0100] Table 1

[0101]

[0102] The preparation method of described fracturing thickening agent comprises the following steps:

[0103] (1) Add 150 parts of white oil (industrial grade), 9 parts of Span 80 and 4.2 parts of Tween 80 in parts by weight into a four-necked flask equipped with a constant speed stirrer, a nitrogen inlet, a thermometer and a reflux tube. Stir until uniform at 30°C and 400r / min to obtain the first oil phase system;

[0104] (2) 240 parts of acrylamide, 1.5 parts of 2-acrylamide-2-methylpropanesulfonic acid, 0.9 parts of n-butyl methanesulfonate, 1.2 parts of propenyl octadecyl dimethyl ammonium chloride, 0.45 One part of N-(2-bromobenzene) cyclopropane carboxamide, 0.75 part of sodium 4-acryloylbenzenesulfonate and 178 parts of deionized water were made into a solution, the pH value was adjusted to 6~7, and the ...

Embodiment 2

[0110] This embodiment provides a fracturing thickener, and the raw material formula of the fracturing thickener is shown in Table 2;

[0111]

[0112]

[0113] The preparation method of described fracturing thickening agent comprises the following steps:

[0114] (1) Add 150 parts of white oil (industrial grade), 9 parts of Span 80 and 4.2 parts of Tween 80 in parts by weight into a four-necked flask equipped with a constant speed stirrer, a nitrogen inlet, a thermometer and a reflux tube. Stir until uniform at 30°C and 400r / min to obtain the first oil phase system;

[0115] (2) 240 parts of acrylamide, 1.7 parts of 2-acrylamide-2-methylpropanesulfonic acid, 1.1 parts of n-butyl methanesulfonate, 1.2 parts of propenyl octadecyl dimethyl ammonium chloride, 0.45 Part of N-(2-bromobenzene)cyclopropanecarboxamide, 0.75 part of sodium 4-acryloylbenzenesulfonate and 177.5 parts of deionized water were made into a solution, the pH value was adjusted to 6~7, and the solution w...

Embodiment 3

[0121] This embodiment provides a fracturing thickener, and the raw material formula of the fracturing thickener is shown in Table 3;

[0122]

[0123] The preparation method of described fracturing thickening agent comprises the following steps:

[0124] (1) Add 150 parts of white oil (industrial grade), 10 parts of Span 80 and 6 parts of Tween 80 in parts by weight into a four-necked flask equipped with a constant speed stirrer, a nitrogen inlet, a thermometer and a reflux tube. Stir until uniform at 30°C and 400r / min to obtain the first oil phase system;

[0125] (2) 270 parts of acrylamide, 1.5 parts of 2-acrylamide-2-methylpropanesulfonic acid, 1 part of n-butyl methanesulfonate, 1.35 parts of propenyl octadecyl dimethyl ammonium chloride, 1.11 Parts of N-(2-bromobenzene)cyclopropanecarboxamide, 1.5 parts of sodium 4-acryloylbenzenesulfonate and 143 parts of deionized water were made into a solution, the pH value was adjusted to 6~7, and the solution was added dropwis...

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Abstract

The invention provides a composition for preparing a fracturing thickening agent, the fracturing thickening agent and a preparation method of the fracturing thickening agent, and belongs to the technical field of polymerization water-soluble polymer petroleum auxiliaries. The composition comprises a water phase, an oil phase and a reverse phase agent, the water phase comprises a nonionic monomer, a salt-resistant monomer, a hydrophobic monomer, a rigid monomer, a cross-linking agent, an initiator and water; the oil phase comprises white oil and an emulsifying agent. A nonionic monomer, a salt-resistant monomer, a hydrophobic monomer, a rigid monomer, a cross-linking agent and other components are dissolved in water to serve as the water phase, white oil and the emulsifying agent are emulsified to serve as the oil phase, all the components are matched with one another under a reasonable proportion to play a synergistic role, an inverse emulsion copolymerization reaction is carried out, the prepared fracturing thickening agent has remarkable salt resistance and temperature resistance and good viscoelasticity.

Description

technical field [0001] The invention belongs to the technical field of polymerized water-soluble polymer petroleum additives, and relates to a composition for preparing a fracturing thickener, a fracturing thickener and a preparation method thereof. Background technique [0002] With the continuous development of the petroleum industry, the development of oil and gas fields in my country is in the later stage of exploitation, and the difficulty lies in the exploitation of low-permeability oil layers. Low-permeability reservoirs have problems such as low permeability, low oil production, and high well pressure. Artificial fracturing must be used to achieve the effect of increasing oil and gas fields. Therefore, the performance of fracturing fluid is directly related to the quality of fracturing operations. [0003] At present, hydraulic fracturing is a commonly used fracturing method, but there are problems such as high apparent viscosity, slow dissolution, and poor temperatu...

Claims

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Application Information

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IPC IPC(8): C08F220/56C08F220/58C08F226/02C08F216/36C08F230/08C08F2/32C09K8/68C09K8/88
CPCC08F220/56C08F2/32C09K8/685C09K8/887C09K8/882C08F220/585C08F226/02C08F216/36C08F230/085
Inventor 荣敏杰李成杰许永升于庆华荣帅帅
Owner SHANDONG NUOER BIOLOGICAL TECH
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