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Solid foam drainage agent composition, preparation method and application

A technology of composition and foam discharge agent, which is applied to drilling compositions, chemical instruments and methods, etc., can solve the problems of gas well production reduction, stop injection of liquid, difficulty and other problems, and achieve the effect of good acid resistance and good technical effect.

Active Publication Date: 2021-07-30
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 sour gas wells have too much liquid in the development process, which leads to the production reduction or even stop of the gas wells and the difficulty of liquid injection. A solid foaming agent composition is provided, especially It is a solid foaming agent composition for acid gas well drainage and gas recovery. It is used for gas well drainage and gas recovery. It can carry liquid efficiently, and has good acid resistance, foaming performance and liquid carrying capacity.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) At normal temperature and pressure, mix 10 grams of alkylamine, 25 grams of long-chain polyether nitrogen-containing compound, and 35 grams of sodium sulfate

[0041] homogeneous, a mixture;

[0042] (2) 0.1 gram of polyacrylamide is added with 1 gram of water and stirred until completely dissolved to obtain a binder solution;

[0043] (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

[0045] (1) Under normal temperature and pressure, 5 grams of alkylamine, 50 grams of long-chain polyether nitrogen-containing compound, 30 grams of sodium sulfate, carbonic acid

[0046] 10 grams of sodium, 30 grams of sodium bicarbonate, and 30 grams of urea were mixed evenly to obtain a mixture;

[0047] (2) Add 0.5 g of polyethylene glycol with 2 g of water and stir until completely dissolved to obtain a binder solution;

[0048] (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

[0050] (1) Under normal temperature and pressure, 50 grams of alkylamine, 10 grams of long-chain polyether nitrogen-containing compound, 10 grams of urea, lemon

[0051] 1 gram of acid, mixed evenly to obtain a mixture;

[0052] (2) Add 0.1 g of starch and 2 g of water and stir until completely dissolved to obtain a binder solution;

[0053] (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 foam discharge agent composition for acid-resistant drainage and gas recovery, a preparation method and application thereof. It mainly solves the problems of excessive fluid accumulation in the development process of existing sour gas wells, which leads to the reduction of production of gas wells or even stop spraying and the difficulty of adding liquid foam drainage agents. The present invention comprises the following components in parts by mass: (1) 1 part of alkylamine; (2) 0.1 to 50 parts of long-chain polyether nitrogen-containing compound; (3) 0.2 to 100 parts of solid filler ; (4) 0-0.5 parts of adhesive; wherein the alkylamine has the general molecular formula shown in formula (I), and the long-chain polyether nitrogen-containing compound has the general molecular formula shown in formula (II) The technical scheme of the invention solves this problem well and can be used in the gas well drainage and gas recovery process.

Description

technical field [0001] The invention relates to a solid foam drainage composition and a preparation method, in particular to a solid acid-resistant foam drainage composition and a preparation method. 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 changes the relative density of the fluid in the lower part of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/584
CPCC09K8/584
Inventor 何秀娟刘通沈之芹张慧李斌
Owner CHINA PETROLEUM & CHEM CORP
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