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High-effective environment-friendly oil-based wax removal agent

An oil-based cleaning and environmental protection technology, applied in the direction of drilling compositions, chemical instruments and methods, etc., to achieve the effect of improving toxicity and reducing damage

Inactive Publication Date: 2016-03-23
陕西延安石油天然气有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the problems existing in the existing oil-based wax remover, and to provide a high-efficiency and environmentally friendly oil-based wax remover that can meet production needs and does not contain sulfur that poisons refinery catalysts and chlorine that accelerates corrosion

Method used

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  • High-effective environment-friendly oil-based wax removal agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Taking the preparation of 1000mL of oil-based wax remover of the present invention as an example, it is prepared by directly mixing the following raw materials uniformly:

[0029] Additive 25mL

[0030] Surfactant 20mL

[0031] Solvent 955mL

[0032] The solvent in this example is a mixture of n-heptane, cyclohexane, n-hexane, and petroleum ether in a volume ratio of 1:5:7:8, the auxiliary agent is n-octanol and isoamyl alcohol, and the volume ratio of the penetrating agent JFC is 1 : 1:2 mixture, the surfactant is a mixture of Span-80 and polyethylene glycol monononylphenyl ether in a volume ratio of 1:1.

Embodiment 2

[0034] In Example 1, the solvent used is replaced by a mixture of equal volumes of n-heptane and cyclohexane, n-hexane, and petroleum ether in a volume ratio of 1:3:5:6, and the amount and preparation method of other raw materials are the same as those in the examples 1 is the same.

Embodiment 3

[0036] Taking the preparation of 1000mL of oil-based wax remover of the present invention as an example, it is prepared by directly mixing the following raw materials uniformly:

[0037] Additive 20mL

[0038] Surfactant 15mL

[0039] Solvent 965mL

[0040] The auxiliary agent, tensio-active agent, and solvent of the present embodiment are respectively identical with embodiment 1.

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Abstract

The invention discloses a high-effective environment-friendly oil-based wax removal agent which is prepared with n-octyl alcohol, isoamyl alcohol and a penetrating agent JFC as additives, span-80 and polyethylene glycol monononylphenyl ether as surfactants, and n-heptane, cyclohexane, n-hexane and petroleum ether as solvents without organic chlorine, carbon disulfide and benzene-series solvents, so that the wax removal agent is greatly eliminated in toxicity and reduces damage on operators. The wax removal agent is toxic-free on a catalyst used in a crude oil refining process and is free of corrosion on oil recovery devices and refining devices. The oil-based wax removal agent is higher than 0.90 in specific gravity, not only has wax removal effect but also has viscosity reducing effect with viscosity reducing rate being higher than 35%, is higher than commercial wax removal agents in wax removal rate by 30% and in was removal effect by 10%, is lower than -20 DEG C in condensation point and is suitable in cold weather.

Description

technical field [0001] The invention belongs to the technical field of chemicals used in the petroleum industry, relates to a medicament used in oil production engineering in oil fields, in particular to an environment-friendly and high-efficiency oil-based wax remover used in 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. [0003] The paraffin deposited in the oil well pipe string and the surface oil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/524
CPCC09K8/524
Inventor 徐勇高锋博王卫忠屈撑囤李金灵张乐
Owner 陕西延安石油天然气有限公司
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