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Oil-resistant foam drainage agent composition, foam drainage agent combined liquid and application thereof

A technology of foam drainage and composition, which is applied in the direction of drilling composition, chemical instruments and methods, etc., and can solve the problems of insufficient foam oil resistance and temperature resistance, bottom-hole fluid accumulation and gas well production reduction, and poor foam drainage performance etc. to achieve the effects of improving oil resistance, reducing viscosity, and reducing flow resistance

Active Publication Date: 2022-01-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the lack of foam oil resistance and temperature resistance of the existing foam drainage agent in the gas well development process existing in the prior art, resulting in poor foam drainage performance, bottom-hole fluid accumulation and gas well reduction or even shutdown The defect of spraying provides a foam liquid discharge agent composition, a foam liquid discharge agent combination liquid and its application, the foam liquid discharge agent composition has excellent foam oil resistance, thermal stability, foaming and liquid carrying properties, So that it has excellent foam drainage performance in its application

Method used

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  • Oil-resistant foam drainage agent composition, foam drainage agent combined liquid and application thereof
  • Oil-resistant foam drainage agent composition, foam drainage agent combined liquid and application thereof
  • Oil-resistant foam drainage agent composition, foam drainage agent combined liquid and application thereof

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preparation example Construction

[0052] In the preparation process of the foam liquid-discharging agent composition, the mixing can first mix any two raw materials, and then mix with other raw materials, or firstly mix a part of a certain raw material with other raw materials, and then finally Mix together.

[0053] The present invention is not particularly limited to the state of the foam drainage agent composition, and can be in any state known in the art, for example, for the convenience of transportation, storage or on-site use, the above-mentioned components can be mixed directly, or the above-mentioned components can be mixed Dissolved in water for use. Preferably, dissolving the above components in water is more conducive to exerting the synergistic effect between different components.

[0054] The foam liquid discharge agent composition of the present invention has good compatibility, and may also contain other treatment agents commonly used in the field. The present invention will not be described ...

Embodiment 1

[0074] Under normal temperature and normal pressure, weigh hydrocarbyl amido betaine, polyether quaternary ammonium salt, sodium tetradecyl α-olefin sulfonate (commercially purchased from China Light Chemical Co., Ltd., brand AOS1416), methanol, ethyl alcohol, and Diol butyl ether was dissolved in the aqueous solution according to the mass ratio of 1:1:0.1:0.1:0.1, and prepared into a 0.5wt% solution to obtain the foam drainage agent combination liquid HF-1.

Embodiment 2

[0076] Under normal temperature and normal pressure, weigh hydrocarbyl amido betaine, polyether quaternary ammonium salt, sodium decyl sulfonate (commercially purchased from Sinopharm), and dissolve methanol in aqueous solution according to the mass ratio of 1:5:0.5:1, and prepare into a 0.3wt% solution to obtain the foam liquid discharge agent combination liquid HF-2.

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Abstract

The invention relates to the field of foam liquid drainage gas production, in particular to an oil-resistant foam liquid drainage agent composition, a foam liquid drainage agent combined liquid and application thereof. The foam drainage agent composition contains alkyl amido betaine with a structure as shown in a formula (I), polyether quaternary ammonium salt with a structure as shown in a formula (II) and a sulfonate anionic surfactant, and has excellent foam oil resistance, thermal stability, foamability and liquid carrying property, so that the foam drainage agent composition has excellent foam drainage performance when in use. Meanwhile, the foam drainage agent combined liquid is applied to the liquid drainage and gas production process of a gas well, has excellent oil resistance, thermal stability, foamability and liquid carrying property, and can ensure smooth gas production of the gas well.

Description

technical field [0001] The invention relates to the field of foam liquid drainage and gas recovery, in particular to an oil-resistant foam liquid drainage agent composition, a foam liquid drainage agent combination liquid and applications thereof. Background technique [0002] With the strengthening of gas field exploitation, gas field fluid production has become a key issue restricting the normal production of gas wells. Foam liquid drainage gas recovery is a liquid drainage gas recovery technology developed rapidly at home and abroad in recent years. It has the advantages of simple equipment, convenient construction, low cost, wide range of applicable well depths, and does not affect the normal production of gas wells. [0003] In foreign countries, since the 1960s, the development of foam drainage agents began, and surfactants such as sulfonates, benzenesulfonates, and alkylphenol polyoxyethylene ethers were mostly used. Up to now, most of the foam liquid drainage agents...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/584C09K8/594C09K8/60
CPCC09K8/584C09K8/594C09K8/602C09K8/604
Inventor 何秀娟李应成裘鋆马俊伟
Owner CHINA PETROLEUM & CHEM CORP
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