Biological enzyme oil displacement agent suitable for crude oil collection

A biological enzyme and oil displacement agent technology, applied in the field of oil displacement agents, can solve the problems of not paying attention to the geological characteristics of reservoirs and the physical conditions of crude oil, and achieve the effect of reducing flow resistance

Inactive Publication Date: 2019-05-31
SUZHOU ZFA NEW ENERGY TECH CO LTD
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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

[0019] The weight percent of biological enzyme, polyoxyethylene ether, alkyl glycoside and diquaternary ammonium salt is 12% of biological enzyme, 8% of polyoxyethylene ether, 10% of alkyl glycoside, 10% of diquaternary ammonium salt, and the rest is water margin. The above components are put into the liquid distribution tank in proportion, and injected into the formation by the injection pump through the injection pipeline.

Embodiment 2

[0021] The weight percentage of biological enzyme, polyoxyethylene ether, alkyl glycoside and diquaternary ammonium salt is 22% of biological enzyme, 4% of polyoxyethylene ether, 3% of alkyl glucoside, 3% of diquaternary ammonium salt, and the rest is the balance of water . The above components are put into the liquid distribution tank in proportion, and injected into the formation by the injection pump through the injection pipeline.

Embodiment 3

[0023] The weight percent of biological enzyme, polyoxyethylene ether, alkyl glycoside and diquaternary ammonium salt is 10% of biological enzyme, 1% of polyoxyethylene ether, 0.5% of alkyl glycoside, 0.2% of diquaternary ammonium salt, and the rest is water margin. The above components are put into the liquid distribution tank in proportion, and injected into the formation by the injection pump through the injection pipeline.

[0024] The working principle of the present invention is as follows:

[0025] It can adhere to the surface of metals and rocks to form an active molecular film to prevent the deposition of paraffin. Acetone wax crystals can catalyze, change the shape of wax crystals, and prevent further growth of wax crystals, thereby effectively preventing precipitation and scaling, and preventing water damage. , effectively improve the water injection capacity, reduce the sand-carrying capacity of crude oil, and reduce the friction between fluid and sandstone, so as...

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PUM

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Abstract

The invention relates to a biological enzyme oil displacement agent suitable for crude oil collection, which comprises biological enzyme, polyoxyethylene ether, alkyl glycoside and diquaternary ammonium salt, wherein the biological enzyme comprises protein complex enzyme NOYEES, bioactive matter BIO-P and BIO-A, and the weight fraction ratio of the protein complex enzyme NOYEES, the bioactive matter BIO-P and the BIO-A in the biological enzyme is 1:6:3. Therefore, the wettability of the surface of rock in anoil storage layer can be converted from oil wet towater wet, the wetting state of the rock in the oil storage layer is changed, the interfacial tension between the rock and the oil is reduced, and the crude oil is easy to peel off from the surface of the rock.The biological enzyme oil displacement agent has certain viscosity reducing effect and reduces the flow resistance of the crude oil in pores of formation.Under the action of formation pressure, the crude oil flows from the periphery to awell bore, thereby playing the role of increasing production and oil.

Description

technical field [0001] The invention relates to an oil displacement agent, in particular to a biological enzyme oil displacement agent suitable for crude oil collection. Background technique [0002] In the current process of oil field development, the primary oil recovery is the process of crude oil being sprayed out of the ground through the oil well relying on the underground pressure. With the reduction of the underground pressure, the self-spraying ends, and the primary oil recovery can recover about 10-15% of the underground. Secondary oil recovery is to replenish underground energy by continuously injecting water into the ground, so as to achieve the purpose of water flooding. However, with continuous water injection, the water content in the produced fluid continues to rise. 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 rea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/582C09K8/584
Inventor 段浩
Owner SUZHOU ZFA NEW ENERGY TECH CO LTD
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