Efficient foam dehydrant composition and preparation method and application thereof

A foam drainage agent and composition technology, which are applied in drilling compositions, chemical instruments and methods, etc., can solve the problems of stop blowing and gas well production reduction, and achieve increased salt resistance, good temperature resistance, and enhanced liquid carrying capacity. Effect

Active Publication Date: 2018-01-19
CHINA PETROLEUM & CHEM CORP +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing high-temperature deep well gas wells have too much fluid accumulation during the development process, which often leads to the problem of gas well reduction or even stop blowout. Therefore, it is of great significance to develop efficient drainage methods

Method used

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  • Efficient foam dehydrant composition and preparation method and application thereof
  • Efficient foam dehydrant composition and preparation method and application thereof
  • Efficient foam dehydrant composition and preparation method and application thereof

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preparation example Construction

[0043] In order to solve the second technical problem of the present invention, the preparation method of the high-efficiency foam drainage composition of the present invention comprises the steps:

[0044] The high-efficiency foam drainage agent composition is obtained by uniformly mixing alkylamine polyether benzene sulfonate and long-chain polyether nitrogen-containing compound with water according to the required mass fraction.

[0045] When the high-efficiency foam drainage composition in the present invention is prepared, there is no special requirement for water, it can be deionized water, and it can also be water containing inorganic minerals, and the water containing inorganic minerals can be tap water, oilfield formation water Or oil field injection water.

[0046] In order to solve the third technical problem of the present invention, the application of the high-efficiency foam drainage composition of the present invention includes the above-mentioned high-efficienc...

Embodiment 1

[0050] Under normal temperature and pressure, weigh alkylamine polyether benzene sulfonate and long-chain polyether nitrogen-containing compounds according to the mass ratio of 1:2, respectively in simulated aqueous solutions with salinity of 0, 100,000, and 200,000 mg / L Dissolve and prepare a 750mg / L solution to obtain the high-efficiency foam drainage composition HF-1. The composition structure is detailed in Table 1.

Embodiment 2

[0052] Under normal temperature and pressure, weigh alkylamine polyether benzene sulfonate and long-chain polyether nitrogen-containing compounds according to the mass ratio of 1:10, respectively in simulated aqueous solutions with salinity of 0, 100,000, and 200,000 mg / L Dissolve and prepare a 750mg / L solution to obtain the high-efficiency foam drainage composition HF-2. The composition structure is detailed in Table 1.

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Abstract

The invention relates to a foam dehydrant composition and a preparation method and application thereof, and belongs to the technical field of petrochemical industry. The efficient foam dehydrant composition provided by the invention is prepared from the following ingredients in parts by mass: 1 part of alkylamine polyether benzene sulfonate and 0.1-50 parts of long-chain polyether nitrogen containing compound. By adopting the technical scheme of the invention, proven by test on foam performance of a foam dehydrant according to SY/T 6465-2000 evaluation method of foaming agent for foam water drainage and gas production, in brine with the degree of mineralization of 0mg/L to 200,000mg/L, the foaming height is greater than 200mm, the liquid carrying amount is greater than 150mL, and after aging at the high temperature of 180 DEG C for 24h, the foam foaming height and drainage performance change rate are smaller than 5%, so that the efficient foam dehydrant composition has good temperatureresistance, salt tolerance, foaming performance and liquid carrying capability, and a relatively good technical effect is achieved.

Description

technical field [0001] The invention relates to a foam drainage composition and its preparation method and application, in particular to a high-temperature deep well high-efficiency foam drainage composition and its preparation method and application, belonging to the technical field of petrochemical industry. Background technique [0002] 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 into foam, which changes the relative density of the fluid in the lower part of the pipe, and the continuously produced ga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/584C09K8/60C09K8/94
Inventor 张国东李应成陈海龙何秀娟刘通沈之芹倪杰裘鋆黄万书马俊伟
Owner CHINA PETROLEUM & CHEM CORP
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