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Solid oil-resistant foam draining agent composition and its preparation method and application

A foam drainage agent and composition technology, which can be applied to drilling compositions, chemical instruments and methods, and production fluids, etc., can solve the problems of gas well production reduction, fluid accumulation, difficulties and the like

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

[0006] One of the technical problems to be solved by the present invention is that in the process of gas well development, the foam formed by the existing foam drainage agent has insufficient oil resistance and temperature resistance, and the foam drainage performance is poor, resulting in fluid accumulation at the bottom of the well, reduced production of the gas well, or even stop spraying and liquid injection Difficult problem, to provide a solid oil-resistant foam drainage agent composition, which can be used for drainage and gas recovery of condensate oil and gas wells, can carry liquid efficiently, and has good oil resistance, thermal stability, foaming performance and liquid carrying capacity

Method used

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  • Solid oil-resistant foam draining agent composition and its preparation method and application
  • Solid oil-resistant foam draining agent composition and its preparation method and application
  • Solid oil-resistant foam draining agent composition and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041](1) Under normal temperature and pressure, 10 grams of alkylamine polyether benzene sulfonate, 20 grams of long-chain polyether nitrogen-containing compound, and 30 grams of sodium sulfate are uniformly mixed to obtain 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 polyether benzene sulfonate, 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 gram mixed uniformly to obtain a mixture;

[0046] (2) Add 0.5 g of polyethylene glycol with 2 g of water and stir until completely dissolved to obtain a binder solution;

[0047] (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

[0049] (1) Under normal temperature and pressure, 50 grams of alkylamine polyether benzene sulfonate, 10 grams of long-chain polyether nitrogen-containing compound, 10 grams of urea, and 1 gram of citric acid were uniformly mixed to obtain a mixture;

[0050] (2) Add 0.1 g of starch and 2 g of water and stir until completely dissolved to obtain a binder solution;

[0051] (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 rod FS-3, whose component structure is shown in Table 1.

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Abstract

The invention relates to a solid foam drainage agent composition and a preparation method and application thereof. It mainly solves the problems of insufficient oil resistance and poor drainage performance of the foam formed by the existing foam drainage agent during the development of condensate oil and gas wells, resulting in fluid accumulation at the bottom of the well, reduced production of gas wells or even stop spraying, and difficulty in filling liquid foam drainage agents. The present invention comprises the following components in parts by mass by using the solid foam drainage composition: 1 part of alkylamine polyether benzene sulfonate having the general molecular formula shown in formula (I); 0.1 to 50 parts having the formula (II) The long-chain polyether nitrogen-containing compound of the general molecular formula shown in (II); 0.2 to 100 parts of solid filler; 0 to 0.5 parts of binder; R' is C 8 ~C 20 Any of the alkyl groups; R 1 for C 10 ~C 26 fat base; R 2 for C 1 ~C 4 The technical scheme of the alkylene group solves this problem well and can be used in the gas well drainage and gas recovery industry.

Description

technical field [0001] The invention relates to a solid oil-resistant foam drainage composition and its preparation method and application, in particular to a solid foam drainage composition for wells containing condensate oil and gas, 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 foam drainage 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/584E21B43/22
CPCC09K8/584E21B43/16
Inventor 马俊伟何秀娟裘鋆沈之芹
Owner CHINA PETROLEUM & CHEM CORP
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