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Composite oil displacing agent for high temperature oil fields

A compound oil flooding and oil field technology, applied in the direction of drilling composition, chemical instruments and methods, etc., can solve the problems of high reservoir temperature, low viscosity of underground crude oil, limited range of enhanced recovery, etc., to achieve enhanced recovery High efficiency, good injection performance, good long-term thermal stability

Inactive Publication Date: 2019-04-23
沈阳慧超科技有限公司
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Problems solved by technology

[0002] Since high-temperature reservoirs generally have the characteristics of high reservoir temperature and low viscosity of underground crude oil, the effect of improving mobility ratio by polymer flooding technology alone is not significant, and the range of enhanced recovery is limited; due to the temperature resistance of polymers, alkali scaling , long-term injectivity, it is difficult for compound flooding technology to work in high temperature reservoirs

Method used

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Embodiment Construction

[0008] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them.

[0009] A composite oil displacement agent used in high temperature oil fields is made from the following raw materials in parts by weight:

[0010] 10-30 parts of alkyl glycoside, 5-10 parts of glyoxal, 5-10 parts of nano-silica sol, 5-15 parts of alkali, 25-40 parts of straight-chain fatty acid alkanolamide, 0.1-5 parts of sacrificial agent, 30-60 parts of sodium polyalkylbenzene sulfonate, 15-30 parts of glucoside, 22-30 parts of biological enzyme and 5-10 parts of glycerol.

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Abstract

The invention discloses a composite oil displacing agent for high temperature oil fields, wherein the composite oil displacing agent is prepared from the following raw materials by weight: 10-30 partsof alkyl glycoside, 5-10 parts of glyoxal, 5-10 of nanometer silica sol, 5-15 parts of an alkali, 25-40 parts of linear fatty acid alkanolamide, 0.1-5 parts of a sacrificial agent, 30-60 parts of sodium polyalkylbenzene sulfonate, 15-30 parts of glucoside, 22-30 parts of biological enzyme, and 5-10 parts of glycerin. According to the present invention, the composite oil displacing agent can resist a temperature of 105 DEG C, has good long-term thermal stability and good injection performance, and can significantly improve oil recovery rate.

Description

technical field [0001] The invention relates to the technical field of waste treatment, in particular to a composite oil displacement agent used in high temperature oil fields. Background technique [0002] Since high-temperature reservoirs generally have the characteristics of high reservoir temperature and low underground crude oil viscosity, the effect of polymer flooding technology alone on improving mobility ratio is not significant, and the range of enhanced recovery is limited; due to polymer temperature resistance, alkali scaling , Influenced by long-term injectability, it is difficult for compound flooding technology to work in high temperature reservoirs. Contents of the invention [0003] The purpose of the present invention is to solve the shortcomings in the prior art, and propose a composite oil displacement agent for high-temperature oil fields. [0004] In order to achieve the above object, the present invention adopts the following technical solutions: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/584
CPCC09K8/584
Inventor 潘洪吉
Owner 沈阳慧超科技有限公司
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