Foaming drainage agent, preparation method and application

A foam drainage agent and fat technology, which is applied in chemical instruments and methods, earthwork drilling, mining fluids, etc., can solve the problem that the effect of the foam drainage agent cannot meet more and more severe field requirements, and achieves good promotion and application prospects. Economic benefits, balanced development effect

Inactive Publication Date: 2017-02-22
CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD CHANGQING DOWNHOLE TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous development of natural gas wells, the effect of conventional foam drainage agents cannot meet the increasingly stringent site requirements

Method used

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  • Foaming drainage agent, preparation method and application
  • Foaming drainage agent, preparation method and application
  • Foaming drainage agent, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] This embodiment provides a foam drainage agent (code name PPJ-1), which is formulated by the following components in mass percentage: 30% betaine, 30% amine oxide, 15% fatty alcohol polyoxyethylene ether sulfate, alkane Glycoside 4%, water 21%.

[0025] In this embodiment, betaine is cocamidopropyl betaine, amine oxide is lauryl amidopropyl amine oxide, fatty alcohol polyoxyethylene ether sulfate is fatty alcohol polyoxyethylene ether sodium sulfate, and the alkyl carbon in the alkyl glycoside is For C8-C10.

[0026] making process:

[0027] Step 1) Measure the water, betaine, amine oxide, fatty alcohol polyoxyethylene ether sulfate and alkyl glycoside of formula quantity;

[0028] Step 2) Dissolving fatty alcohol polyoxyethylene ether sulfate in water, adding betaine while stirring, and then adding amine oxide, stirring evenly, adding alkyl glucoside, stirring well to obtain the product.

Embodiment 2

[0030] This embodiment provides a foam drainage agent (code name PPJ-2), which is formulated by the following components in mass percentage: 15% betaine, 45% amine oxide, 10% fatty alcohol polyoxyethylene ether sulfate, alkane Glycoside 2%, water 28%.

[0031] The betaine in this example is lauryl sultaine, the amine oxide is lauryl amidopropyl amine oxide, the fatty alcohol polyoxyethylene ether sulfate is fatty alcohol polyoxyethylene ether potassium sulfate, and the alkyl glycosides The base carbon is C12-C14. The preparation process refers to Example 1.

Embodiment 3

[0033] This embodiment provides a foam drainage agent (code name PPJ-3), which is formulated by the following components in mass percentage: 28% betaine, 42% amine oxide, 12% fatty alcohol polyoxyethylene ether sulfate, alkane Glycoside 1%, water 17%.

[0034] The betaine in this example is lauryl amidopropyl betaine, the amine oxide is lauryl dimethyl amine oxide, the fatty alcohol polyoxyethylene ether sulfate is fatty alcohol polyoxyethylene ether sodium sulfate, and the alkyl glycoside The middle alkyl carbon is C12-C14. The preparation process refers to Example 1.

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Abstract

The invention provides a foaming drainage agent. The foaming drainage agent is prepared from components in percentage by mass as follows: 15%-30% of betaine, 25%-50% of amine oxide, 5%-15% of fatty alcohol polyoxyethylene ether sulfate, 1%-4% of alkyl glycoside and the balance of water. The invention further provides a preparation method and an application of the foaming drainage agent. Different types of surfactants with different functional group structures are compounded, so that a special synergistic effect is realized, compacter oriented molecule arrangement is formed, compactness and stability of foam are enhanced, foam performance is improved, condensate oil resistance is up to 50%, methyl alcohol resistance is up to 30%, mineralization resistance reaches 350,000 mg/L, liquid carrying capacity is 70% or higher, surface tension is 28 mN/m or lower, and the problems that a conventional foaming drainage agent is difficult to foam, the foam stability is poor and the liquid carrying amount is low in an extreme environment are solved.

Description

technical field [0001] The invention belongs to the technical field of recovery of oil and natural gas wells, and in particular relates to a foam drainage agent and its preparation method and application, which are used for liquid drainage and production operations in gas wells containing high salinity, high condensate oil and high methanol production water. Background technique [0002] Foam drainage agent is one of the commonly used measures for low-cost development of low-pressure gas wells due to its low cost, small investment, and quick effect. The wellbore effusion is fully mixed to generate a large amount of foam, and the wellbore effusion is effectively carried to the ground with the help of the production well's own energy, so as to reduce the back pressure at the bottom of the well and increase the production pressure difference, thereby enabling the gas well to resume normal production and achieve dredging of the gas-water channel To achieve the goal of stable pro...

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 张冕邵秀丽高燕梁陇霞温哲豪白建文李泽锋景志明王改红李婧梁凌云衣得强
Owner CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD CHANGQING DOWNHOLE TECH CO
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