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Environment-friendly supramolecular injection enhancer and preparation method thereof

A kind of injection booster and supramolecular technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve problems such as environmental pollution, insoluble scale cannot be completely removed, corrosion, etc., to improve permeability and maintain formation permeability rate, improve the effect of stability

Inactive Publication Date: 2020-02-14
四川树霖科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the reservoir acidizing construction process cannot completely remove some insoluble scales, and the acidizing process is likely to cause corrosion and environmental pollution. Therefore, we urgently need an environmentally friendly and efficient method for reducing pressure and increasing injection.

Method used

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  • Environment-friendly supramolecular injection enhancer and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0027] An environmentally friendly supramolecular injection booster, which is composed of the following components in weight percentage: 25% of scale remover, 1% of surfactant, 1% of penetrant, 2% of stabilizer, 30% of miscible forming agent, and 41% of water Wherein, the descaling agent is made up of chelating agent and antiscaling agent, and its ratio is 1:1; The chelating agent is sodium gluconate, and antiscaling agent comprises 2-hydroxyphosphoacetic acid and maleic anhydride-acrylic acid copolymer, and its ratio The ratio is 1:1; the surfactant is lauryl ethoxy sulfobetaine, the penetrating agent is fatty alcohol polyoxyethylene ether, the stabilizer is 2-acrylamide-2-methylpropanesulfonic acid, and the miscible forming agent Gold nanoparticles coated with dextran.

Embodiment 2

[0029] An environment-friendly supramolecular injection booster, which is composed of the following components in weight percentage: 25% of scale remover, 1% of surfactant, 1% of penetrant, 1% of stabilizer, 30% of miscible forming agent, and 42% of water Wherein, the descaling agent is made up of chelating agent and antiscaling agent, and its ratio is 1:1; The chelating agent is sodium gluconate, and antiscaling agent comprises 2-hydroxyphosphoacetic acid and maleic anhydride-acrylic acid copolymer, and its ratio The ratio is 1:2; the surfactant is lauryl ethoxy sulfobetaine, the penetrating agent is fatty alcohol polyoxyethylene ether, the stabilizer is 2-acrylamide-2-methylpropanesulfonic acid, and the miscible forming agent Gold nanoparticles coated with dextran.

Embodiment 3

[0031] An environmentally friendly supramolecular injection booster, which is composed of the following components in weight percentage: 22% of scale remover, 1% of surfactant, 1% of penetrant, 1% of stabilizer, 30% of miscible forming agent, and 45% of solvent Wherein, the descaling agent is made up of chelating agent and antiscaling agent, and its ratio is 1:1; The chelating agent is sodium gluconate, and antiscaling agent comprises 2-hydroxyphosphoacetic acid and maleic anhydride-acrylic acid copolymer, and its ratio The ratio is 2:3; the surfactant is lauryl ethoxy sulfobetaine, the penetrating agent is fatty alcohol polyoxyethylene ether, the stabilizer is 2-acrylamide-2-methylpropanesulfonic acid, and the miscible forming agent Platinum nanoparticles coated with dextran.

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Abstract

An environment-friendly supramolecular injection enhancer is disclosed. The injection enhancer comprises, by weight, 20%-25% of a descaling agent, 0.5%-1% of a surfactant, 0.5%-1% of a penetrant, 1%-2% of a stabilizer, 20%-30% of a miscible forming agent and 40%-60% of a solvent, wherein the descaling agent is composed of a chelating agent and an anti-scaling agent, the ratio of the chelating agent to the anti-scaling agent is 1:1, the surfactant is an ampholytic surfactant, the miscible forming agent is precious metal nanoparticles wrapped by glucan, and the solvent is a polar solvent. The invention also discloses a preparation method of the injection enhancer. The formation permeability and the crude oil fluidity are improved through the injection enhancer, and the effect of improving the oil and gas yield is achieved by improving the oil well production rate.

Description

technical field [0001] The invention relates to the field of depressurization of water injection wells, in particular to an environment-friendly supramolecular injection booster and a preparation method thereof. Background technique [0002] Water injection development is the main production method in oilfields. During the production process, due to factors such as water-sensitive damage, scaling, and solid-phase plugging, the pressure guiding capacity of the formation is weak, and low-permeability oil wells have problems such as high water injection pressure, small water injection volume, and unbalanced injection and production, resulting in The water injection pressure is too high, the water injection volume decreases rapidly, and the production of oil wells decreases rapidly. Therefore, there is an urgent need to develop a method for depressurization and boosting injection. [0003] Chinese patent document CN201810336318.5, application date 20180416, the patent name is:...

Claims

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Application Information

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IPC IPC(8): C09K8/52
CPCC09K8/52C09K2208/10
Inventor 许议霖张明宇
Owner 四川树霖科技集团有限公司
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