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Water flooding added agent in use for watering oil field, and preparation method

A technology for oil field water injection and production method, which is applied to chemical instruments and methods, drilling composition and other directions, can solve the problems of oil field water injection volume not meeting the requirements of allocation injection, water injection pressure rise, reservoir pressure drop, etc. The effect of low cost, reduced pressure and simple production process

Inactive Publication Date: 2007-12-26
常彦荣 +2
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  • Summary
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  • Application Information

AI Technical Summary

Problems solved by technology

However, as the water injection time prolongs, the water injection pressure of the water injection well will continue to rise, causing the water injection volume in the oil field to fail to meet the injection requirements, resulting in a drop in reservoir pressure and a decrease in oil recovery

Method used

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Embodiment Construction

[0005] In the present invention, for the injection booster for oilfield water injection and its preparation method, the main components and percentages of selected raw materials are: citric acid 0.5-5%, glacial acetic acid 1-8%, aminotrimethylene phosphoric acid 5-15%, chloroacetic acid 1% -2%, ammonium chloride 3-8%, polyoxyethylene octylphenol ether-10 15-20%, hydrochloric acid 15-25%, hydrochloric acid corrosion inhibitor 1-5%, water 20-40%, after specific With advanced equipment, dynamic physical synthesis reaction and dynamic packaging can be used to generate the booster injection agent for oilfield water injection.

[0006] The injection booster for oil field water injection made with the above composition ratio, when used, add the additive into the dosing tank with anti-corrosion lining, make a dilute solution, and send the liquid to the tank through the anti-corrosion liquid filling pump To the inlet of the water feeding pump and added to the injection water of the oil...

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Abstract

This invention relates to a method for preparing injection-increasing agent for oilfield water injection. The injection-increasing agent comprises: citric acid, glacial acetic acid, amino trimethylene phosphonic acid, chloroacetic acid, NH4Cl, octylphenol polyoxyethylene ether-10, HCl, HCl corrosion inhibitor and water. The method comprises: performing dynamic physical synthetic reaction with a specific apparatus to obtain a biphase solution, which is the injection-increasing agent. The method has such advantages as simple process, low cost and abundant raw materials. When the injection-increasing agent is used in oilfield water injection, the water injection pressure can be effectively redued, and stable exploitation can be achieved in low-productivity oilfield.

Description

Technical field [0001] The invention belongs to the technical improvement in the oilfield development process, and in particular relates to an injection booster for oilfield water injection and a preparation method thereof. Background technique [0002] At present, during the development process of most oilfields in our country, secondary oil recovery is required, the purpose of which is to increase the oil production rate of the oilfield. Most of the main measures of secondary oil recovery technology are water injection development, although this method can improve the recovery rate of the oil field. However, with the prolongation of the water injection time, the water injection pressure of the water injection well will continue to rise, causing the water injection volume in the oil field to fail to meet the injection requirements, resulting in a drop in reservoir pressure and a decrease in oil recovery. Contents of the invention [0003] The object of the present invent...

Claims

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Application Information

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IPC IPC(8): C09K8/84
Inventor 常彦荣杨暹岳建平
Owner 常彦荣