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Solid foam drainage agent composition and preparation method and application thereof

A technology of composition and foaming agent, which is applied in the direction of drilling composition, chemical instruments and methods, etc., and can solve problems such as difficulties, liquid injection stop, gas well production reduction, etc.

Active Publication Date: 2021-05-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the technical problems to be solved by the present invention is that the existing high-temperature and high-salt deep gas wells have too much fluid accumulation during the development process, which leads to the production reduction or even stop of the gas well and the difficulty of liquid injection. A solid foaming agent composition is provided , especially a high-temperature-resistant and high-salt solid drainage solid foaming agent composition for gas recovery, which is applied to high-temperature and high-salt deep wells, can carry liquid efficiently, and has good temperature and salt resistance, foaming performance and liquid-carrying ability

Method used

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  • Solid foam drainage agent composition and preparation method and application thereof
  • Solid foam drainage agent composition and preparation method and application thereof
  • Solid foam drainage agent composition and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Under normal temperature and pressure, 10 grams of alkylamine polyether carboxylate, 20 grams of long-chain polyether nitrogen-containing compounds, and 30 grams of sodium sulfate are mixed uniformly to obtain a mixture;

[0041] (2) 0.1 gram of polyacrylamide is added with 1 gram of water and stirred until completely dissolved to obtain a binder solution;

[0042] (3) The mixture obtained in step (1) and the binder solution obtained in step (2) were uniformly mixed, and pressed to form a solid foam drainage stick FS-1, whose component structure is shown in Table 1.

Embodiment 2

[0044] (1) Under normal temperature and pressure, 5 grams of alkylamine polyether carboxylate, 50 grams of long-chain polyether nitrogen-containing compounds, 30 grams of sodium sulfate, 10 grams of sodium carbonate, 30 grams of sodium bicarbonate, and 30 grams of urea Mix well to get a mixture;

[0045] (2) Add 0.5 g of polyethylene glycol with 2 g of water and stir until completely dissolved to obtain a binder solution;

[0046] (3) The mixture obtained in step (1) and the binder solution obtained in step (2) were mixed evenly, and pressed to form a solid foam drainage rod FS-2, whose component structure is shown in Table 1.

Embodiment 3

[0048] (1) Under normal temperature and pressure, 50 grams of alkylamine polyether carboxylate, 10 grams of long-chain polyether nitrogen-containing compounds, 10 grams of urea, and 1 gram of citric acid were mixed uniformly to obtain a mixture;

[0049] (2) Add 0.1 g of starch and 2 g of water and stir until completely dissolved to obtain a binder solution;

[0050] (3) The mixture obtained in step (1) and the binder solution obtained in step (2) were uniformly mixed, and pressed to form a solid foam drainage stick FS-3, whose component structure is shown in Table 1.

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Abstract

The invention relates to a solid foaming agent composition and a preparation method and application thereof. It mainly solves the problems of excessive liquid accumulation in the development process of existing high-temperature and high-salt deep gas wells, which leads to production reduction or even stop blowing of gas wells and difficulty in filling liquid foam drainage agents. The present invention includes the following components in terms of parts by mass: (1) 1 part of alkylamine polyether carboxylate; (2) 0.1 to 50 parts of long-chain polyether nitrogen-containing compounds; (3) 0.2 to 50 parts 100 parts of solid filler; (4) 0-0.5 parts of binder; wherein said alkylamine polyether carboxylate is shown in formula (I); said long-chain polyether nitrogen-containing compound is shown in formula (II) shown; the R 1 for C 8 ~C 20 Any one of the alkyl groups; the R 1 for C 10 ~C 26 The fat-based technical solution solves this problem better and can be used in the high-temperature and high-salt deep well drainage and gas recovery industry.

Description

technical field [0001] The invention relates to a solid foam drainage composition, a preparation method and its application, in particular to a solid foam drainage composition for high-temperature, high-salt deep wells, a preparation method and its application. Background technique [0002] With the intensification of gas field exploitation, water production from gas fields has become a key issue restricting the normal production of gas wells. Foam drainage gas recovery is a 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. Foam drainage is to inject a foaming agent into the well through the tubing or tubing annulus, and generate foam with certain stability under the agitation of the air flow. The liquid phase deposited by slippage in the pipe turns into foam, which ch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/588C09K8/88
CPCC09K8/588C09K8/885
Inventor 何秀娟裘鋆马俊伟金军
Owner CHINA PETROLEUM & CHEM CORP