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ASP ternary composite oil displacing agent

A technology of ternary compound and oil displacement agent, applied in the field of oil displacement agent, can solve the problems of low stability of ternary compound flooding, low recovery rate, low salt and high temperature resistance, etc., and achieve excellent crude oil emulsifying ability , the effect of increasing the recovery rate and improving the temperature and salt resistance

Active Publication Date: 2019-10-22
合肥全景泰益新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the stability of ASP ASP flooding is not high, the performance of salt and high temperature resistance is not high, and the recovery factor is not high

Method used

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  • ASP ternary composite oil displacing agent

Examples

Experimental program
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Effect test

Embodiment 1

[0019] An ASP ternary composite oil displacement agent, the raw materials of which include by weight: 0.8 parts of polyacrylamide, 13.5 parts of surfactant, 3.5 parts of sodium silicate, 8 parts of ethanol, and 55 parts of water.

Embodiment 2

[0021] An ASP ternary composite oil displacement agent, its raw materials include by weight: 0.6 parts of polyacrylamide, 15 parts of surfactant, 3 parts of sodium silicate, 10 parts of ethanol, and 50 parts of water;

[0022] Among them, in the preparation process of polyacrylamide, 2-acrylamido-2-methylpropanesulfonic acid, N,N-dimethylacrylamide, acrylamide, arachidonic acid are added to N,N-dimethyl Mix in dimethylformamide, raise the temperature to 90°C, stir for 30 minutes, add the N,N-dimethylformamide solution of azobisisobutyronitrile dropwise in nitrogen atmosphere, keep stirring during the dropping process, within 60 minutes After the dropwise addition, continue to keep warm and stir for 3 hours, cool down to room temperature, stir continuously during the cooling process, add diethyl ether to settle, take the sediment, add methanol to dissolve, add diethyl ether to settle, filter to take the filter cake, and vacuum dry to obtain polyacrylamide, wherein, 2 - The weig...

Embodiment 3

[0024] An ASP ternary composite oil displacement agent, its raw materials include by weight: 1 part of polyacrylamide, 12 parts of surfactant, 4 parts of sodium silicate, 5 parts of ethanol, and 60 parts of water;

[0025] Among them, in the preparation process of polyacrylamide, 2-acrylamido-2-methylpropanesulfonic acid, N,N-dimethylacrylamide, acrylamide, arachidonic acid are added to N,N-dimethyl Mix in dimethylformamide, raise the temperature to 80°C, stir for 60 minutes, add the N,N-dimethylformamide solution of azobisisobutyronitrile dropwise in a nitrogen atmosphere, keep stirring during the dropping process, within 30 minutes After the dropwise addition, continue to keep stirring for 4 hours, cool down to room temperature, stir continuously during the cooling process, add diethyl ether to settle, take the sediment, add methanol to dissolve, add diethyl ether to settle, filter to take the filter cake, and vacuum dry to obtain polyacrylamide, wherein, 2 - The weight rati...

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Abstract

The invention discloses an ASP ternary composite oil displacing agent, which comprises the following raw materials by weight: 0.6-1 part of polyacrylamide, 12-15 parts of a surfactant, 3-4 parts of sodium silicate, 5-10 parts of ethanol, and 50-60 parts of water. According to the present invention, 2-acrylamido-2-methylpropanesulfonic acid, N,N-dimethyl acrylamide and arachidonic acid are introduced into polyacrylamide, and are cooperated with a suitable surfactant and a weak base, such that the stability, the temperature resistance, the salt resistance and the recovery rate of the oil displacing agent are improved.

Description

technical field [0001] The invention relates to the technical field of oil displacement agents, in particular to an ASP ternary composite oil displacement agent. Background technique [0002] In the field of petroleum, it is usually referred to as primary oil recovery by utilizing the energy of the oil layer; injecting water and gas into the oil layer to supplement energy to the oil layer to extract oil is called secondary oil recovery; and using chemical substances to improve the interaction between oil, gas, water and rock Between performance, more oil is extracted, which is called tertiary oil recovery. [0003] In the stage of tertiary oil recovery, various physical and chemical methods are used to change the viscosity of crude oil and the adsorption capacity of rocks, so as to increase the flow capacity of crude oil and further enhance oil recovery. Oil displacement agent is an important means to enhance oil recovery in tertiary oil recovery. [0004] Oil displacement...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/588C09K8/60C09K8/88C08F220/56C08F220/58C08F220/54C08F236/22
CPCC08F220/56C09K8/588C09K8/604C09K8/882C09K8/885
Inventor 朱仁发赵磊韩国井
Owner 合肥全景泰益新材料科技有限公司
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