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Emulsion type paraffin remover and inhibitor and preparation method thereof

A wax-removing and emulsion-type technology, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of low wax-repelling rate of wax-removing and resisting agents, and achieve improved wax-repelling rate, less flammability and explosion, and easier operation easy effect

Inactive Publication Date: 2016-01-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wax removing and preventing agent in this invention is an emulsion type wax removing and preventing agent, but the wax preventing rate of its wax removing and preventing agent is relatively low

Method used

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  • Emulsion type paraffin remover and inhibitor and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0023] The emulsion type wax remover of the present embodiment is made up of the following components by weight percentage: 45% of No. 150 solvent naphtha, 4.5% of octylphenol polyoxyethylene ether, 4.5% of fatty alcohol polyoxyethylene ether, polyoxyethylene sorbose Alcohol anhydride monostearate 2.25%, diethylene glycol butyl ether 3%, and the balance is deionized water.

[0024] The preparation method of the emulsion type wax removing and preventing agent of the present embodiment, comprises the steps:

[0025] 1) Add octylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether and polyoxyethylene sorbitan monostearate to deionized water in proportion, stir to mix evenly, and obtain mixture A;

[0026] 2) Add diethylene glycol butyl ether in proportion to mixture A, stir to make the mixture uniform, and obtain mixture B;

[0027] 3) Under the condition of stirring, slowly add No. 150 mineral spirits into the mixture B dropwise, and stir until the mixture is evenl...

Embodiment 2

[0029] The emulsion type wax remover of the present embodiment is made up of the following components by weight percentage: No. 150 solvent naphtha 50%, octylphenol polyoxyethylene ether 5%, fatty alcohol polyoxyethylene ether 6%, polyoxyethylene sorbose Alcohol anhydride monostearate 2.5%, diethylene glycol monopropyl ether 3.5%, and the balance is simulated brine. The simulated brine is prepared by adding the following components in weight percentage into water: NaCl4.06%, CaCl 2 0.59%, MgCl 2 0.18%, NaHCO 3 0.17%, the total salinity of the prepared simulated brine is 5×10 4 mg / L.

[0030] The preparation method of the emulsion type wax removing and preventing agent of the present embodiment, comprises the steps:

[0031] 1) Add octylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether and polyoxyethylene sorbitan monostearate to simulated brine in proportion, stir to mix evenly, and obtain mixture A;

[0032] 2) Add diethylene glycol monopropyl ether into ...

Embodiment 3

[0035] The emulsion type wax remover of the present embodiment is made up of the following components by weight percentage: 60% of No. 150 solvent naphtha, 6% of octylphenol polyoxyethylene ether, 5% of fatty alcohol polyoxyethylene ether, polyoxyethylene sorbose Alcohol anhydride monostearate 3%, diethylene glycol butyl ether 4%, and the balance is deionized water.

[0036] The preparation method of the emulsion type wax removing and preventing agent of the present embodiment, comprises the steps:

[0037] 1) Add octylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether and polyoxyethylene sorbitan monostearate to deionized water in proportion, stir to mix evenly, and obtain mixture A;

[0038] 2) Add diethylene glycol butyl ether in proportion to mixture A, stir to make the mixture uniform, and obtain mixture B;

[0039] 3) Under the condition of stirring, slowly add No. 150 mineral spirits into the mixture B dropwise, and stir until the mixture is evenly mixed t...

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Abstract

The invention relates to an emulsion type paraffin remover and inhibitor and a preparation method thereof, and belongs to the technical field of oil exploitation. The emulsion type paraffin remover and inhibitor includes, by weight, 45%-60% of 150# solvent oil, 4.5%-6% of octylphenol polyoxyethylene ether, 4.5%-6% of fatty alcohol-polyoxyethylene ether, 2.25%-3% of polyoxyethylene sorbitan monostearate, 3%-4% of ether cosolvent, and the balance water or synthetic brine. According to the emulsion type paraffin remover and inhibitor, the paraffin dissolution rate is more than 0.022 g / min, the paraffin inhibition rate is more than 75%, and oil well paraffinication can be effectively prevented. The emulsion type paraffin remover and inhibitor has good paraffin removing and inhibiting effects.

Description

technical field [0001] The invention relates to an emulsion type wax remover and a preparation method thereof, belonging to the technical field of petroleum exploitation. Background technique [0002] Most of the crude oil mined in my country contains a certain amount of wax, and the wax in the crude oil in the formation usually exists in a dissolved state. However, during the extraction of crude oil, the crude oil produced by the oil well is extracted from the formation and transported to the ground. On the contrary, the temperature and pressure of the crude oil liquid continue to decrease, and the original wax-dissolving ability gradually decreases. When the temperature of the crude oil liquid is lower than the melting point of the wax, the wax begins to crystallize and precipitate, and the precipitated wax will be deposited around the well wall and In the production casing, it will cause damage to the reservoir, cause problems such as sucker rod overload, tubing blockage, e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/524
CPCC09K8/524
Inventor 张永刚唐万举罗懿邓学峰符伟兵李克智方群王薇斯容刘学全杨欢
Owner CHINA PETROLEUM & CHEM CORP
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