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High-efficiency and environment-friendly type wax cleaning agent for oil well

A wax remover and high-efficiency technology, applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems of oil-based wax remover pollution, low efficiency of oil wax removal, low relative density, etc. Effect of wax efficiency, improvement of application range, and increase of density

Inactive Publication Date: 2018-05-01
CHENGDU KESHENG PETROLEUM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the oil-based wax remover pollutes the environment and has a low relative density. question

Method used

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Examples

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Effect test

Embodiment

[0018] The high-efficiency and environment-friendly wax remover for oil wells of the present invention comprises the following components: organic solvent, biosurfactant, alcohol ether, propylene glycol butyl ether, light hydrocarbons, n-octanol, isoamyl alcohol, penetrating agent, and weighting agent; Described biosurfactant is oxidized starch acetate. The light hydrocarbons are a mixture of C4-C10 straight-chain alkanes or a mixture of C4-C10 saturated cycloalkanes or a mixture of C4-C10 straight-chain alkanes and C4-C10 saturated cycloalkanes. Described organic solvent is one or more in light oil, sherwood oil, mineral spirits. The biosurfactant includes corn starch. The weighting agent is heavy benzene.

[0019] The present invention adopts biosurfactant instead of macromolecular chemical surfactant, which solves the problem that the residue of macromolecular chemical surfactant will pollute the environment; in the present invention, a weighting agent with good compatibi...

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PUM

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Abstract

The invention discloses a high-efficiency and environment-friendly type wax cleaning agent for an oil well. The high-efficiency and environment-friendly type wax cleaning agent is prepared from the following components of an organic solvent, a biological surfactant, alcohol ether, propanediol butyl ether, lightweight hydrocarbon, n-octyl alcohol, isoamyl alcohol, a penetrant and a weighting agent,wherein the biological surfactant selects oxidized starch acetate. The high-efficiency and environment-friendly type wax cleaning agent has the advantage that the biological surfactant is used for replacing the macromolecular chemical surfactant, so as to solve the problem of pollution to environment by the residues of the macromolecular chemical surfactant.

Description

technical field [0001] The invention relates to a wax remover, in particular to an efficient and environment-friendly wax remover for oil wells. Background technique [0002] Crude oil contains a certain amount of wax, which usually exists in a dissolved state in the formation. However, in the process of crude oil extraction, the temperature and pressure are continuously reduced. When the temperature and pressure drop to a certain value, the wax dissolved in the crude oil will start to precipitate. As the pressure and temperature continue to decrease and the light components continue to overflow, the wax in the crude oil will continue to precipitate, crystallize, grow, gather, and deposit on the surface of the sucker rod and the inner wall of the tubing. The paraffin deposited in the oil well pipe string and the surface oil gathering pipeline will reduce the effective cross-sectional area of ​​the pipeline or even block it, resulting in a decrease in pump efficiency and a d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/524
CPCC09K8/524
Inventor 贺昶明
Owner CHENGDU KESHENG PETROLEUM TECH
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