Foam drainage agent composition and its preparation method and application
A technology of composition and foaming agent, which is applied in the direction of drilling composition, chemical instruments and methods, etc., and can solve the problems of gas well production reduction and stop blowout
Active Publication Date: 2021-05-28
CHINA PETROLEUM & CHEM CORP +1
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- Application Information
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Problems solved by technology
[0004] One of the technical problems to be solved by the present invention is that in the development process of existing high-temperature deep gas wells, there is too much liquid accumulation, which leads to the problem of gas well reduction or even stop spraying. It provides a foam discharge agent composition, especially a high-temperature-resistant drainage Foam discharge agent composition for gas production, used in gas wells, especially high-temperature deep wells, can carry liquid efficiently, and has good temperature resistance, foaming performance and liquid-carrying ability
Method used
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Effect test
Embodiment 1
[0032] Under normal temperature and pressure, weigh alkylamine polyether, long-chain polyether nitrogen-containing compound, and dissolve nano-silica in 100,000mg / L sodium chloride aqueous solution according to the mass ratio of 1:2:1 to prepare 1.0wt % solution, the foam discharge agent composition HF-1 is obtained. The composition structure is shown in Table 1.
Embodiment 2
[0034] Under normal temperature and pressure, weigh alkylamine polyether, long-chain polyether nitrogen-containing compound, and dissolve nano-silica in 100,000mg / L sodium chloride aqueous solution according to the mass ratio of 1:10:5, and prepare 1.0wt % solution to obtain the foam discharge agent composition HF-2. The composition structure is shown in Table 1.
Embodiment 3
[0036] Under normal temperature and pressure, weigh alkylamine polyether, long-chain polyether nitrogen-containing compound, and dissolve nano-silica in 100,000mg / L sodium chloride aqueous solution according to the mass ratio of 1:0.2:0.5 to prepare 1.0wt % solution, the foam discharge agent composition HF-3 is obtained. The composition structure is shown in Table 1.
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Abstract
The invention relates to a foam discharge agent composition for high-temperature deep well drainage and gas recovery, a preparation method and application thereof. It mainly solves the problem of excessive fluid accumulation in the development process of the existing high-temperature deep well gas well, which leads to the reduction of production or even the suspension of blowout of the gas well. The present invention comprises the following components in parts by mass: (1) 1 part of alkylamine polyether; (2) 0.1 to 50 parts of long-chain polyether nitrogen-containing compound; (3) 0 to 10 parts of Nanoparticles; wherein the alkylamine polyether has a general molecular formula shown in formula (I): the long-chain polyether nitrogen-containing compound has a general molecular formula shown in formula (II): R 1 for C 8 ~C 20 Any one of the alkyl groups; m, n, p, q are any number from 0 to 20; R 1 for C 10 ~C 26 The adipose-based technical solution better solves this problem and can be used in the high-temperature gas well drainage and gas recovery industry.
Description
technical field [0001] The invention relates to a foam drainage agent composition and its preparation method and application, which are especially suitable for high-temperature deep wells. 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 the pipe, an...
Claims
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IPC IPC(8): C09K8/584C09K8/60C09K8/94
CPCC09K8/584C09K8/604C09K8/94C09K2208/10
Inventor 何秀娟裘鋆何良好李应成
Owner CHINA PETROLEUM & CHEM CORP