Foaming cleanup additive for gas well

A foaming aid, gas well technology, applied in drilling compositions, chemical instruments and methods, etc., can solve the problems of not being able to play the best effect, poor compatibility, complicated operation, etc., and achieve excellent foaming aids. row effect, cost reduction, variety reduction effect

Inactive Publication Date: 2017-03-08
SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the past, in the fracturing process of gas wells, it was necessary to add foaming agent and drainage aid separately to the fracturing fluid. In actual work, there was often a problem of poor compatibility between the foaming agent and the drainage aid, resulting in two None of the preparations can exert its best effect, and many other additives need to be added in the field implementation, which is cumbersome to operate and increases the cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Get 15 grams of fatty alcohol polyoxyethylene ether sodium sulfate (AES) and dissolve it in 15 grams of ethanol, stir at room temperature, and dissolve evenly, then add 5 grams of lauryl dimethyl amine oxide, and stir evenly, and finally add 65 One gram of water is evenly stirred to make 100g of foaming aid.

Embodiment 2

[0028] Dissolve 20 grams of alkyl polyglycoside APG1214 in 20 grams of ethanol, stir at room temperature, and dissolve evenly, then add 10 grams of lauric acid diethanolamide, and stir evenly, and finally add 50 grams of water and stir evenly to make 100g of Foaming aid.

Embodiment 3

[0030] Dissolve 25 grams of alcohol ether glycoside AEG in 20 grams of butanediol, stir at room temperature, and dissolve evenly, then add 10 grams of coconut oil fatty acid diethanolamide, and stir evenly, and finally add 45 grams of water and stir evenly to prepare 100g of foaming aid.

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PUM

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Abstract

The invention discloses a foaming cleanup additive for a gas well. The foaming cleanup additive is composed of a surfactant, a foam stabilizing agent, an auxiliary agent and water. The preparation method comprises a step of uniformly mixing the surfactant, the foam stabilizing agent, the auxiliary agent and water so as to obtain the finished foaming cleanup additive. The foaming cleanup additive has excellent foaming performance, can produce abundant and stable foam and has moderate salt resistance; the foaming cleanup additive has surface tension of 21.11 mN / m and good cleanup performance and is beneficial for flowback of an operation fluid; and the foaming cleanup additive makes full use of all the raw materials, combines a foaming agent and a cleanup additive, realizes two purposes, reduces cost and is convenient to use on site.

Description

technical field [0001] The invention belongs to the technical field of preparation of petrochemical products, and relates to a foaming and drainage aid for gas wells and a preparation method thereof. Background technique [0002] With the large-scale development of gas fields, the number of gas well fracturing wells is increasing, and the scale of fracturing is also increasing. The performance of fracturing fluid is an important factor affecting the success or failure of fracturing construction and the effect of stimulation. Adding a foaming agent to the fracturing fluid system is beneficial to reduce the density of the fluid column in the wellbore, so that the fracturing proppant can evenly follow the wellbore to reach the formation fractures; in addition, the foaming agent can also reduce the surface and interfacial tension of the fracturing fluid, And it has a certain effect of helping the flowback liquid to flow back and discharge the formation quickly and efficiently. ...

Claims

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Application Information

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IPC IPC(8): C09K8/68
CPCC09K8/602C09K8/68
Inventor 王佳李俊华谢元刘哲峰路建萍沈燕宾周渝李辰
Owner SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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