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High-efficiency biological enzyme oil-displacing agent and oil-displacing method

An oil displacement method and bio-enzyme technology, applied in the direction of chemical instruments and methods, earth drilling, drilling compositions, etc., can solve the problems of not paying attention to the geological characteristics of the reservoir and the physical conditions of crude oil, etc., and achieve rich oil reserves , productivity increase, process saving effects

Inactive Publication Date: 2014-04-02
ZHONGSHAN NAIDE BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing oil displacement agents usually only pursue ultra-low interfacial tension, and do not pay attention to the geological characteristics of the reservoir and the physical properties of crude oil.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 22 grams of biological enzymes, 15 grams of glucosides, 10 grams of polyoxyethylene ethers, 0.1 grams of alkyl glycosides and 13 grams of diquaternary ammonium salts, and the balance of water. The above-mentioned components are put into the container in proportion, and after being processed by a cyclone separation device and refrigerated, they are injected into the formation through a vacuum pump.

Embodiment 2

[0016] 25 grams of biological enzymes, 22 grams of glucosides, 14 grams of polyoxyethylene ethers, 0.2 grams of alkyl glycosides, 20 grams of biquaternary ammonium salts, and the balance of water. The above-mentioned components are put into the container in proportion, and after being processed by a cyclone separation device and refrigerated, they are injected into the formation through a vacuum pump.

Embodiment 3

[0018] 30 grams of biological enzymes, 30 grams of glucosides, 16 grams of polyoxyethylene ethers, 0.3 grams of alkyl glycosides, 24 grams of diquaternary ammonium salts, and the balance of water. The above-mentioned components are put into the container in proportion, and after being processed by a cyclone separation device and refrigerated, they are injected into the formation through a vacuum pump.

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PUM

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Abstract

The invention relates to a high-efficiency biological enzyme oil-displacing agent and an oil-displacing method, and is mainly used for solving the problems that the existing oil-displacing agent has poor stability and high probability of being influenced by temperature in the oil-displacing process, cannot be degraded, is poisonous and corrosive, and can cause oil layer scaling and pollution to the environment and stratum. The high-efficiency biological enzyme oil-displacing agent comprises the following components: 22-30% of biological enzyme, 15-30% of heteroside, 10-16% of polyoxyethylene ether, 0.1-0.3% of alkyl glycoside, 13-24% of biquaternary ammonium salt and the balance of water. The method can effectively improve the water injection capacity and the efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of chemicals used in petrochemical industry, and in particular relates to a bio-enzyme oil-displacement agent and an oil-displacement method for enhancing crude oil recovery. Background technique [0002] At present, the water content in the produced fluid of my country's onshore oilfields is as high as 92-95%. According to international standards, when the water content in the produced fluid reaches 97%, there is no economic benefit. However, secondary oil recovery can only recover about 20% of the underground crude oil. Therefore, tertiary oil recovery, that is, chemical flooding, is generally carried out in the petroleum industry. However, the existing oil displacement agents usually only pursue ultra-low interfacial tension, and do not pay attention to the geological characteristics of the reservoir and the physical properties of crude oil. Contents of the invention [0003] In order to solve th...

Claims

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Application Information

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IPC IPC(8): C09K8/58C09K8/584C09K8/588E21B43/22
CPCC09K8/582C09K8/584
Inventor 段升华
Owner ZHONGSHAN NAIDE BIOTECH
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