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High-temperature acidification diverting agent and preparation method thereof

An acid-steering, high-temperature technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of poor temperature resistance and viscosity increasing performance, and can increase the length of acid corrosion cracks, improve temperature resistance, and improve The effect of slow performance

Active Publication Date: 2020-10-16
滨州市广友化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of poor temperature resistance and thickening performance in the prior art, the present invention provides a high-temperature acidification diverting agent to improve its temperature resistance and thickening performance. The present invention also provides a preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A high-temperature acidification diverting agent, comprising the following components:

[0023] Erucamide propyl betaine 20g, dialkylimidazole ionic liquid surfactant 20g, ethylene glycol 3g, deionized water 57g.

[0024] The preparation method of described high-temperature acidification diverting agent, comprises the steps:

[0025] (1) Add ethylene glycol to deionized water;

[0026] (2) adding the dialkylimidazole ionic liquid surfactant to the solution obtained in step (1);

[0027] (3) Add erucamidopropyl betaine to the solution obtained in step (2), and continue stirring until fully dissolved to obtain a high-temperature acidification diverting agent.

Embodiment 2

[0029] A high-temperature acidification diverting agent, comprising the following components:

[0030] 40 g of erucamidopropyl betaine, 10 g of 1-butyl-3-methylimidazolium n-alkylsulfonate, 4 g of propynyl alcohol, and 46 g of deionized water.

[0031] The preparation method of described high-temperature acidification diverting agent, comprises the steps:

[0032] (1) Add propynyl alcohol to deionized water;

[0033] (2) Add 1-butyl-3-methylimidazolium n-alkylsulfonate to the solution obtained in step (1);

[0034] (3) Add erucamidopropyl betaine to the solution obtained in step (2), and continue stirring until fully dissolved to obtain a high-temperature acidification diverting agent.

Embodiment 3

[0036] A high-temperature acidification diverting agent, comprising the following components:

[0037] Erucamidopropyl betaine 30g, alkylimidazole-pyridine ionic liquid surfactant 30g, ethanol 5g, deionized water 35g.

[0038] The preparation method of described high-temperature acidification diverting agent, comprises the steps:

[0039] (1) Add ethanol to deionized water;

[0040] (2) adding the alkylimidazole-pyridine ionic liquid surfactant to the solution obtained in step (1);

[0041] (3) Add erucamidopropyl betaine to the solution obtained in step (2), and continue stirring until fully dissolved to obtain a high-temperature acidification diverting agent.

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Abstract

The invention relates to the technical field of acidification and acid fracturing, in particular to a high-temperature acidification diverting agent and a preparation method thereof. The acidificationdiverting agent is prepared from the following raw materials in percentage by mass: 20%-40% of erucyl amide propyl betaine, 10%-30% of an ionic liquid surfactant, 3%-5% of an organic additive and thebalance of deionized water. The provided high-temperature acidification diverting agent can be used in a reservoir with a temperature of 160 DEG C, the viscosity at 160 DEG C can still reach 153 mPa.s, gaps can be well blocked, a diverting effect is realized under a high-temperature condition, the high-temperature acidification diverting agent greatly improves the viscosity of a diverting acid system at a high temperature and can adapt to more stratum conditions; and the provided preparation method is simple and easy to operate.

Description

technical field [0001] The invention relates to the technical field of acidification and acid fracturing, in particular to a high-temperature acidification diverting agent and a preparation method thereof. Background technique [0002] Acidizing and acid fracturing is one of the main stimulation measures for carbonate oil and gas reservoirs at present. Acidizing diverting agent is a temporary plugging agent, which can temporarily block high-permeability layers, improve the suction profile of acid liquid, expand the acidizing range, and improve acidifying effect. Steering agents are generally divided into three categories: the first category is foam blocking agent, the gas that produces foam is mainly nitrogen, fatty amine hydrochloride, quaternary ammonium salt or nonionic-anionic surfactant is used as foaming agent; the second category It is polymer diverting agent, benzoic acid sulfamic acid, boric acid, carboxymethyl starch, hydroxyethyl cellulose naphthalene and other c...

Claims

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Application Information

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IPC IPC(8): C09K8/74
CPCC09K8/74
Inventor 饶天利张文来王伟华韩利宝高挺王祁邱建玲徐壮举刘波徐涛张琲琲
Owner 滨州市广友化工有限公司
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