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Environment-friendly composite blocking remover composition for oil fields

A technology of composite plugging remover and composition, which is applied in the direction of drilling composition, chemical instruments and methods, etc., and can solve problems such as oil well equipment, pipeline corrosion, environmental protection problems, and incomplete treatment of acid-containing residual liquid. Achieve the effects of low corrosion, moderate concentration, convenient transportation and use

Inactive Publication Date: 2012-04-04
SHAANXI HAIAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Acid liquid is highly corrosive, and it is highly corrosive to oil well equipment, pipelines, pumps, etc.; incomplete treatment of the reversed acid-containing residual liquid may easily cause environmental problems

Method used

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  • Environment-friendly composite blocking remover composition for oil fields

Examples

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Effect test

Embodiment 1

[0023] An environment-friendly oilfield composite plugging remover composition is characterized in that the composite plugging remover composition consists of 5 parts of surface active oil displacement agent, 7 parts of solid chlorine dioxide, and 8 parts of solid bactericidal activator according to the ratio of parts by mass. composition. Described surface-active oil displacement agent is by mass percentage, and wherein sodium octylbenzene sulfonate should account for 40% of total mass, polyoxyethylene ether should account for 15% of total mass, ethanol should account for 3% of total mass, water It should account for 48% of the total mass. Described solid chlorine dioxide is by mass percentage, wherein solid chlorate should account for 86% of total mass, carbonate should account for 4.4% carbonate of total mass, persalt should account for 9.6% of total mass. Described solid bactericidal type activator is by mass percentage, wherein bactericide should account for 53% of total...

Embodiment 2

[0026]An environment-friendly oilfield composite plugging remover composition is composed of 6 parts of surface-active oil-displacing agent, 10 parts of solid chlorine dioxide and 6 parts of solid bactericidal activator according to the ratio of parts by mass. The surface-active oil-displacing agent is composed of Percentage, wherein sodium octylbenzenesulfonate should account for 58% of the total mass, polyoxyethylene ether should account for 12% of the total mass, ethanol should account for 3.5% of the total mass, and water should account for 26.5% of the total mass. Described solid chlorine dioxide is by mass percentage, wherein solid chlorate should account for 86% of total mass, carbonate should account for 4.4% carbonate of total mass, persalt should account for 9.6% of total mass. The described solid bactericidal activator is by mass percentage, wherein the bactericide should account for 60% of the total mass, the activation accelerator should account for 8% of the total...

Embodiment 3

[0028] An environment-friendly oilfield composite plugging remover composition is composed of 8 parts of surface active oil displacement agent, 9 parts of solid chlorine dioxide, and 6 parts of solid bactericidal activator according to the ratio of parts by mass. The surface active oil displacement agent is composed of Mass percentage, wherein sodium octylbenzenesulfonate should account for 58% of the total mass, polyoxyethylene ether should account for 15% of the total mass, ethanol should account for 3.5% of the total mass, and the aqueous solution of effective content 50%, described Solid chlorine dioxide is by mass percentage, and wherein solid chlorate should account for 86% of gross mass, carbonate should account for 4.4% carbonate of gross mass, persalt should account for 9.6% of gross mass, described solid The bactericidal activator is based on mass percentage, wherein the bactericide should account for 74% of the total mass, the activation accelerator should account fo...

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PUM

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Abstract

The invention discloses an environment-friendly composite blocking remover composition for oil fields, comprising 5-10 weight portions of surface active oil displacement agent, 6-11 weight portions of solid chlorine dioxide, and 4-8 weight portions of solid disinfection type activator. The composite blocking remover composition has the characteristics of cleaning and containing no corrosive acid,increases wetting and percolating capacity of the blocking remover, reduces the interfacial tension of the oil-water surface, increases the sweep capacity of the blocking remover, and has the advantages of high efficiency, safety and environmental protection.

Description

technical field [0001] The invention belongs to the field of oil field chemistry and relates to a composite plugging remover for oil fields, in particular to an environment-friendly compound plugging remover composition for oil fields. technical background [0002] Oil extraction is the main part of oil production. In all processes of oil development, such as drilling, cementing, fracturing and acidizing, and water injection, a large number of chemicals are used to solve problems in oil field development. At the same time, these chemicals cause oil layer damage, pollution and clogging to varying degrees, resulting in a rapid decline in oil and gas production, or even shutdown. [0003] As far as oil and gas layer damage is concerned, formation plugging is the result of the potential damage factors of the reservoir itself and the outside world. The damage factors of the reservoir itself include reservoir sensitive minerals, storage seepage space, rock surface properties, res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/58C09K8/52C09K8/524
Inventor 刘白胡
Owner SHAANXI HAIAN IND
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