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Blocking remover based on fluorocarbon surfactant micelle structure and preparation method of blocking remover

A fluorocarbon surface, active agent technology, applied in chemical instruments and methods, drilling compositions and other directions, can solve the problems of increasing oil production, high oil-water interfacial tension, and increasing penetration resistance, etc., to reduce the oil-water interface. The effect of moderate tension, weight average molecular weight and strong adaptability

Inactive Publication Date: 2020-09-15
XIAN ZHONGFU KAIHONG GASOLINEEUM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In recent years, foreign oilfields have begun to use fluorocarbon surfactants to remove plugging and increase production of oil wells. Fluorocarbon surfactants have an ideal effect on removing complex organic scales. Ideal material for organic scale plugging, but there are still problems such as low oil recovery, poor stability, and high oil-water interfacial tension
For example: Patent CN201910615572 provides a high recovery EOR oil displacement agent, which includes polyacrylamide, modified nano-silica, a compound of fluorocarbon surfactant, sodium carbonate and water, and its recovery rate reaches 19%, but the degradation rate of organic matter and inorganic matter, and the increase in oil production still need to be improved. At the same time, the presence of silica may remain in the oil layer, increasing the penetration resistance; the fluorocarbon surfactant in the patent US201815956617 reduces oil and water interfacial tension, but its oil recovery and the degradation rate of organic matter and inorganic matter still need to be improved

Method used

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  • Blocking remover based on fluorocarbon surfactant micelle structure and preparation method of blocking remover
  • Blocking remover based on fluorocarbon surfactant micelle structure and preparation method of blocking remover
  • Blocking remover based on fluorocarbon surfactant micelle structure and preparation method of blocking remover

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preparation example Construction

[0073] The second aspect of the present invention provides a method for preparing a plugging agent based on a fluorocarbon surfactant micelle structure, which includes: mixing the components of the plugging agent based on a fluorocarbon surfactant micelle structure evenly, Instantly.

[0074] In one embodiment, the preparation method of the plug-releasing agent based on the fluorocarbon surfactant micelle structure includes: after mixing the clay stabilizer with deionized water, then adding other components and mixing evenly to obtain .

[0075] The total weight part of the blocking release agent based on fluorocarbon surfactant micellar structure in the present invention is 100 parts.

[0076] The third aspect of the present invention provides a plugging remover based on fluorocarbon surfactant micellar structure applied to low permeability oil and gas fields.

Embodiment 1

[0080] Embodiment 1 of the present invention provides a kind of deblocking agent based on fluorocarbon surfactant micelle structure, by weight, it consists of 0.5 part of fluorocarbon surfactant, 20 parts of complex acid, 0.5 part of clay stabilizer, Composed of 3 parts of chelating agent, 1 part of active agent, 5 parts of corrosion inhibitor, and 70 parts of deionized water.

[0081] The active agent is OP-7; the corrosion inhibitor is HSJ-2 acidification corrosion inhibitor.

[0082] The fluorocarbon surfactant includes a polyether nonionic fluorocarbon surfactant and a zwitterionic fluorocarbon surfactant, the weight ratio of which is 0.3:1.

[0083] The polyether nonionic fluorocarbon surfactant includes component A and component B, and its weight ratio is 0.1:1; the weight average molecular weight of the component A is 950, and the brand is Zonyl FSN-100; The above component B is TF281.

[0084] The zwitterionic fluorocarbon surfactant is Zonyl FS-500.

[0085] The co...

Embodiment 2

[0091]Embodiment 2 of the present invention provides a kind of blocking release agent based on fluorocarbon surfactant micelle structure, by weight, it consists of 1 part of fluorocarbon surfactant, 20 parts of complex acid, 3 parts of clay stabilizer, Composed of 4 parts of chelating agent, 0.5 parts of active agent, 3 parts of corrosion inhibitor, and 68.5 parts of deionized water.

[0092] The active agent is OP-7; the corrosion inhibitor is HSJ-2 acidification corrosion inhibitor.

[0093] The fluorocarbon surfactant includes a polyether nonionic fluorocarbon surfactant and a zwitterionic fluorocarbon surfactant, the weight ratio of which is 0.8:1.

[0094] The polyether nonionic fluorocarbon surfactant includes component A and component B, and its weight ratio is 0.5:1; the weight average molecular weight of the component A is 950, and the brand is Zonyl FSN-100; The above component B is TF281.

[0095] The zwitterionic fluorocarbon surfactant is Zonyl FS-500.

[0096]...

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Abstract

The invention relates to the field of blocking removers, in particular to a blocking remover based on a fluorocarbon surfactant micelle structure and a preparation method of the blocking remover. Theblocking remover based on a fluorocarbon surfactant micelle structure comprises the following components in parts by weight: 0.1-1.5 parts of a fluorocarbon surfactant, 4-20 parts of composite acid and the balance of deionized water, totaling 100 parts. The fluorocarbon surfactant in the blocking remover provided by the invention is good in compatibility, the interfacial tension of oil and water is relatively low, organic and inorganic impurities can be effectively stripped, the production amount of crude oil is relatively high, and the blocking remover is particularly suitable for productionof low-permeability oil and gas fields.

Description

technical field [0001] The invention relates to the field of plugging agents, more specifically, the invention relates to a plugging agent based on a fluorocarbon surfactant micelle structure and a preparation method thereof. Background technique [0002] Petroleum is a strategic material related to the lifeline of my country's economy. In my country, the development and production stabilization technology of medium and high permeability reservoirs is relatively mature. Yield and economic benefits are a major challenge faced by many domestic oil fields. Therefore, how to improve the level of tertiary oil recovery technology and increase the recovery rate of existing oil reservoirs has important economic value and strategic significance. [0003] In the process of oilfield exploitation, the oil layer will be blocked due to various reasons in the production process, resulting in a decrease in permeability and production. In order to ensure the normal production of the oilfiel...

Claims

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Application Information

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IPC IPC(8): C09K8/524C09K8/528C09K8/584C09K8/60
CPCC09K8/524C09K8/528C09K8/584C09K8/602C09K8/604C09K2208/12
Inventor 李泰余郑勇田育红张道法张满侯军刚马健解析张倩刘建升惠峰林志波李平杨金智黄昕茹刘毅刘怡君李艳李莹
Owner XIAN ZHONGFU KAIHONG GASOLINEEUM TECH
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