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Foam scrubbing agent as well as preparation method and application thereof

A foaming agent and active agent technology, applied in chemical instruments and methods, earth drilling, mining fluids, etc., can solve problems such as lack of work performance, achieve simple and easy preparation methods, good compatibility, and realize industrial production Effect

Active Publication Date: 2015-12-16
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many types of foaming agents, but most of them are based on single-performance foaming agents, and there are deficiencies in working performance.

Method used

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  • Foam scrubbing agent as well as preparation method and application thereof
  • Foam scrubbing agent as well as preparation method and application thereof
  • Foam scrubbing agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The present embodiment provides a kind of foaming agent, by weight percentage, this foaming agent comprises:

[0025] Foaming component: betaine complex 50%;

[0026] Foam aid component: α-sodium olefin sulfonate (provided by Nanfeng Chemical Group Co., Ltd., trade name AOS) 6%;

[0027] Foam stabilizing components: coconut oil fatty acid diethanolamide 14%, fluorocarbon surfactant 10%;

[0028] and water 20%.

[0029] Among them, the above-mentioned fluorocarbon surfactant is a sulfonate-type perfluorosurfactant, that is, the product FC-15 provided by Shanghai Yingzheng Technology Co., Ltd.

[0030] The above-mentioned beet compound is composed of three structurally similar betaine surfactants, dodecyl dimethyl betaine A, tetradecyl dimethyl betaine B and hexadecyl dimethyl betaine C. It is compounded, and the foam performance of the system obtained after compounding is better than that of any single betaine.

[0031] Proportioning and test are carried out to above...

Embodiment 2

[0051] The present embodiment provides a kind of foaming agent, by weight percentage, this foaming agent comprises:

[0052] Foaming components: betaine complex 47%;

[0053] Foam aid component: 10% of sodium α-olefin sulfonate (provided by Nanfeng Chemical Group Co., Ltd., trade name AOS);

[0054] Foam stabilizing components: coconut oil fatty acid diethanolamide 10%, fluorocarbon surfactant 13%;

[0055] and water 20%.

[0056] Among them, the above-mentioned fluorocarbon surfactant is a sulfonate-type perfluorosurfactant, that is, the product FC-15 provided by Shanghai Yingzheng Technology Co., Ltd.

[0057] Described betaine compound is according to shown in table 2, by dodecyl dimethyl betaine A, tetradecyl dimethyl betaine B, hexadecyl dimethyl betaine C according to mass ratio 3:3:2 mixed preparation.

[0058] The foam discharge agent of the present embodiment is prepared through the following steps:

[0059] Dodecyl dimethyl betaine A, tetradecyl dimethyl betaine...

Embodiment 3

[0065] The present embodiment provides a kind of foaming agent, by weight percentage, this foaming agent comprises:

[0066] Foaming components: betaine complex 43%;

[0067] Foam aid component: α-olefin sulfonate sodium (provided by Nanfeng Chemical Group Co., Ltd., trade name AOS) 12%;

[0068] Foam stabilizing components: coconut oil fatty acid diethanolamide 9%, fluorocarbon surfactant 16%;

[0069] and water 20%.

[0070] Among them, the above-mentioned fluorocarbon surfactant is a sulfonate-type perfluorosurfactant, that is, the product FC-15 provided by Shanghai Yingzheng Technology Co., Ltd.

[0071] Described betaine compound is according to shown in table 2, by dodecyl dimethyl betaine A, tetradecyl dimethyl betaine B, hexadecyl dimethyl betaine C according to mass ratio 3:3:2 mixed preparation.

[0072] The foam discharge agent of the present embodiment is prepared through the following steps:

[0073] Dodecyl dimethyl betaine A, tetradecyl dimethyl betaine B, ...

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Abstract

The invention provides a foam scrubbing agent as well as a preparation method and application thereof. The foam scrubbing agent comprises components in weight of 25%-50% of glycine betaine, 6%-28% of alpha-sodium-olefinsulfonate, 3%-14% of cocoanut fatty acid diethanolamide, 10%-22% of a fluorocarbon surfactant and the balance of water. The invention further provides a preparation method and application of the foam scrubbing agent in processing a natural gas well. The foam scrubbing agent has the advantages of high temperature resistance, high salinity resistance and gas condensate resistance, and the use concentration of the foam scrubbing agent in mineralized water is 0.2%-1.2%. Besides, the foam scrubbing agent has the characteristics that raw materials are easy to obtain, the toxicity is low, and the agent is easy to degrade, doesn't react with gas and liquid components and is favorable for large-scale application of a site gas well.

Description

technical field [0001] The invention belongs to the technical field of oilfield chemistry, and relates to a foaming agent for natural gas wells, a preparation method and application thereof. Background technique [0002] In the middle and late stages of natural gas well development, formation energy decreases, and formation water enters the near-wellbore area or wellbore with the natural gas flow, and accumulates there, resulting in a decline in gas well production or even being drowned by water. In the technical series of water drainage gas recovery technology, bubble drainage technology has attracted more and more attention due to its advantages of convenient construction, simple equipment, low cost, wide range of applicable well depth, quick return, and no influence on normal production of gas wells. It is one of the most economical and effective methods to increase natural gas production and extend the production cycle of gas wells. By adding some surfactants with speci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/584E21B43/22
CPCC09K8/584E21B43/16
Inventor 杨晓鹏郭东红辛浩川孙建峰
Owner PETROCHINA CO LTD
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