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High-temperature foam scrubbing agent for drainage gas recovery

A technology of drainage and gas extraction and foam discharge agent, which is applied in the directions of drilling compositions, chemical instruments and methods, etc., can solve the problem that foam discharge agent is not suitable for high temperature, high salinity and high condensate oil and gas at the same time, and achieves Good production aid effect, excellent compatibility, and reservoir protection effect

Active Publication Date: 2013-04-03
SUNCOO PETROLEUM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the situation that a large number of foaming agents cannot be suitable for high temperature, high salinity and high condensate oil and gas wells at the same time, combined with the development characteristics of water and gas reservoirs, according to the theory of surfactants and the theory of foamability and foam stability, in the experiment A new type of foam drainage agent was developed by using the orthogonal design experiment method on the basis of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A high-temperature foaming agent for drainage and gas recovery, the components of which include by mass ratio: sodium lauryl sulfate accounts for 10 parts of the total weight, alkyl glucoside accounts for 2 parts, AES accounts for 15 parts, dodecylsulfonic acid Sodium accounts for 20 parts, homemade biosurfactant accounts for 5 parts, and water accounts for 48 parts.

[0017] The AES is fatty alcohol polyoxyethylene ether sulfate.

[0018] The biosurfactant is composed of 30% fatty acid glyceride, 20% fatty acid sorbitan, 20% polysorbate and 30% stearic acid in parts by mass.

Embodiment 2

[0020] A high-temperature foaming agent for drainage and gas recovery, its components include by mass ratio: sodium lauryl sulfate accounts for 11 parts of the total weight, alkyl glucoside accounts for 3 parts, AES accounts for 16 parts, dodecylsulfonic acid Sodium accounted for 21 parts, homemade biosurfactant accounted for 6 parts, and water accounted for 43 parts.

[0021] The AES is fatty alcohol polyoxyethylene ether sulfate.

[0022] The biosurfactant is composed of 30% fatty acid glyceride, 20% fatty acid sorbitan, 20% polysorbate and 30% stearic acid in parts by mass.

Embodiment 3

[0024] A high-temperature foaming agent for drainage and gas recovery, the components of which include by mass ratio: sodium lauryl sulfate accounts for 12 parts of the total weight, alkyl glucoside accounts for 4 parts, AES accounts for 17 parts, dodecylsulfonic acid Sodium accounted for 22 parts, homemade biosurfactant accounted for 7 parts, and water accounted for 38 parts.

[0025] The AES is fatty alcohol polyoxyethylene ether sulfate.

[0026] The biosurfactant is composed of 30% fatty acid glyceride, 20% fatty acid sorbitan, 20% polysorbate and 30% stearic acid in parts by mass.

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Abstract

The invention relates to a high-temperature foam scrubbing agent for drainage gas recovery. The agent comprises the following components in parts by weight: 10-15 parts of sodium lauryl sulfate, 2-5 parts of alkyl glucoside, 15-18 parts of AES ( Alcohol Ether Sulphate), 20-25 parts of sodium lauryl sulfonate, 5-10 parts of biosurfactant and 27-48 parts of water. The high-temperature foam scrubbing agent has very high thermal stability and high foamability.

Description

technical field [0001] The invention relates to a formula for foam drainage and gas recovery in gas well exploitation, in particular to a high-temperature foam discharge agent for drainage and gas recovery. 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. It is to inject the foaming agent into the water-bearing gas well, make the bottom hole liquid contact with the foaming agent, and generate a large amount of low-density water-containing foam with the help of the agitation of the natural gas flow. And the purpose of prolonging its self-spraying period. At present, domestic foam unloading agents are generally suitable for formations below 70°C. As the ambient temperature rises, the foaming ability and stabi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/12
Inventor 王俊奇盖海防韩长武
Owner SUNCOO PETROLEUM TECH
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