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Composite clear antiwax remover

A wax-removing and compound-type technology, applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems of wax-dissolving rate, wax-repelling rate limitation, affecting effect, wax easy to crystallize, etc., and achieve wax-dissolving rate High, fast wax melting rate, large wax melting effect

Inactive Publication Date: 2019-02-22
西安巨力石油技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the prior art, benzene-based organic solvents are simply used in the preparation of wax-removing and anti-wax agents, which have limited wax-dissolving rate and anti-wax rate, and are not environmentally friendly.
Mainly pure benzene series organic solvents, its wax melting rate and wax prevention rate are limited, and it is not environmentally friendly
At the same time, in the prior art, the wax is easy to crystallize, which affects the effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The composite wax remover and anti-wax agent in this embodiment includes the following raw materials in parts by mass: 40-80 parts xylene, 10-20 parts ethylene glycol monobutyl ether, 10-20 parts isopropanol, 10-20 parts Polyoxyethylene nonylphenol ether and 15-25 parts weighting agent.

[0031] Among them, the benzene is xylene, the ether is ethylene glycol monobutyl ether, the alcohol is isobutanol, the phenol ether is polyoxyethylene nonylphenol ether, and the weighting agent is ilmenite powder.

[0032] The above-mentioned raw materials were weighed, mixed and stirred to obtain the compound wax remover and anti-wax agent of this embodiment.

[0033] The composite wax remover and preventive agent prepared in this example has a homogeneous liquid appearance. After measurement, its wax melting rate is 0.002, its wax prevention rate is greater than 40%, and its flash point is 18°C. It not only meets the technical requirements, but is also superior to skills requirement...

Embodiment 2

[0035] In this embodiment, the following raw materials are included in parts by mass: 50 parts of benzene, 14 parts of ether, 14 parts of alcohol, 13 parts of phenol ether and 18 parts of weighting agent.

[0036] Among them, the benzene is xylene, the ether is ethylene glycol monobutyl ether, the alcohol is isopropanol, the phenol ether is polyoxyethylene nonylphenol ether, and the weighting agent is iron ore powder.

[0037] The above-mentioned raw materials were weighed, mixed and stirred to obtain the compound wax remover and anti-wax agent of this embodiment.

[0038] The composite wax remover and preventive agent prepared in this example has a homogeneous liquid appearance. It is measured that its wax melting rate is 0.0035, its wax prevention rate is greater than 40%, and its flash point is 20°C. It not only meets the technical requirements, but is also superior to skills requirement.

Embodiment 3

[0040] In this embodiment, the following raw materials are included in parts by mass: 60 parts of benzene, 15 parts of ether, 15 parts of alcohol, 15 parts of phenol ether and 20 parts of weighting agent.

[0041] Among them, the benzene is xylene, the ether is ethylene glycol monobutyl ether, the alcohol is isopropanol, the phenol ether is polyoxyethylene nonylphenol ether, and the weighting agent is barite powder.

[0042] The above-mentioned raw materials were weighed, mixed and stirred to obtain the compound wax remover and anti-wax agent of this embodiment.

[0043] The composite wax remover and preventive agent prepared in this example has a homogeneous liquid appearance, and its wax melting rate is 0.04, its wax prevention rate is greater than 40%, and its flash point is 30°C. It not only meets the technical requirements, but is also superior to skills requirement.

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Abstract

The invention discloses a composite clear antiwax remover which comprises, by weight, 40-80 parts of benzenes, 10-20 parts of ethers, 10-20 parts of alcohols, 10-20 parts of phenol ether and 15-25 parts of weighting agents. The raw materials have good mutual solubility, and a coating film can be formed on the pipe wall or an oil rod, which can inhibit crystallization of wax. The composite clear antiwax remover has the advantages of safety and environmental friendliness.

Description

technical field [0001] The invention belongs to the technical field of additives in oil wells, and further relates to a composite wax remover and preventive agent. Background technique [0002] Wax usually exists in a dissolved state under oil reservoir conditions. However, during the production process, waxy crude oil rises along the tubing. As the pressure continues to decrease and light components continue to escape, when the crude oil is exposed to a temperature below the critical The cloud point occurs when the surface is waxed. There are several mechanisms for wax deposition, among which the diffusion of wax molecules to cold surface molecules and the shear diffusion of already crystallized wax are dominant. Wax crystals are in the form of flakes and have formed a solid three-dimensional network. Therefore, the wax crystal structure has a certain degree of firmness at a certain temperature. If it is knotted in the pipeline, it will increase the flow resistance of crud...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/524
CPCC09K8/524
Inventor 胡辉祥
Owner 西安巨力石油技术有限公司
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