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Oil-based paraffin remover and inhibitor

A technology of anti-wax agent and anti-wax, which is applied in the direction of drilling compositions, chemical instruments and methods, etc., and can solve the problems such as poor use effect of anti-wax agent

Inactive Publication Date: 2015-11-18
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an oil-based wax remover to solve the problem that the existing wax inhibitors are not effective in the oil exploitation process.

Method used

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  • Oil-based paraffin remover and inhibitor
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  • Oil-based paraffin remover and inhibitor

Examples

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Effect test

Embodiment 1

[0014] The oil-based wax remover and anti-wax agent of the present invention is composed of a wax remover and a wax remover, wherein the wax remover is composed of 90-120# petroleum ether, cyclohexane and kerosene, and the weight percentage of various materials is: 90 -120# Petroleum ether 20%, Cyclohexane 30%, Kerosene 50%; Wax inhibitor is composed of wax inhibitor Ⅰ and wax inhibitor Ⅱ, wax inhibitor Ⅰ is composed of octadecyl acrylate and styrene, acrylic acid ten The weight ratio of octadecyl acrylate and styrene is 14:1; wax inhibitor II is composed of octadecyl acrylate and maleic anhydride, and the weight ratio of octadecyl acrylate and maleic anhydride is 28.6:1; oil-based wax remover The weight percent of each component in the composition is: wax remover 95%, wax inhibitor I 2.5%, wax inhibitor II 2.5%.

Embodiment 2

[0016] The oil-based wax remover and anti-wax agent of the present invention is composed of a wax remover and a wax remover, wherein the wax remover is composed of 90-120# petroleum ether, cyclohexane and kerosene, and the weight percentage of various materials is: 90 -120# Petroleum ether 45%, cyclohexane 35%, kerosene 20%; wax inhibitor is composed of wax inhibitor Ⅰ and wax inhibitor Ⅱ, wax inhibitor Ⅰ is composed of octadecyl acrylate and styrene, acrylic acid ten The weight ratio of octadecyl acrylate and styrene is 14:1; wax inhibitor II is composed of octadecyl acrylate and maleic anhydride, and the weight ratio of octadecyl acrylate and maleic anhydride is 28.6:1; oil-based wax remover The weight percent of each component in the composition is: wax remover 80%, wax inhibitor I 10%, wax inhibitor II 10%.

Embodiment 3

[0018] The oil-based wax remover and anti-wax agent of the present invention is composed of a wax remover and a wax remover, wherein the wax remover is composed of 90-120# petroleum ether, cyclohexane and kerosene, and the weight percentage of various materials is: 90 -120# Petroleum ether 20%, Cyclohexane 60%, Kerosene 20%; Wax inhibitor is composed of wax inhibitor Ⅰ and wax inhibitor Ⅱ, wax inhibitor Ⅰ is composed of octadecyl acrylate and styrene, acrylic acid ten The weight ratio of octadecyl acrylate and styrene is 14:1; wax inhibitor II is composed of octadecyl acrylate and maleic anhydride, and the weight ratio of octadecyl acrylate and maleic anhydride is 28.6:1; oil-based wax remover The weight percent of each component in the composition is: 70% of wax remover, 15% of wax inhibitor I, and 15% of wax inhibitor II.

[0019] The specific synthesis method of the anti-wax agent in the above-mentioned three embodiments is as follows:

[0020] First, take the raw material...

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Abstract

The invention discloses an oil-based paraffin remover and inhibitor composed of a paraffin remover and paraffin inhibitors. The paraffin remover is composed of, by weight, 20-45% of 90-120# petroleum ether, 25-60% of cyclohexane and 20-50% of kerosene; the paraffin inhibitors are composed of a paraffin inhibitor I and a paraffin inhibitor II, the paraffin inhibitor I is composed of octadecyl acrylate and styrene, the weight ratio of octadecyl acrylate to styrene is 14:1, the paraffin inhibitor II is composed of octadecyl acrylate and maleic anhydride, and the weight ratio of octadecyl acrylate to maleic anhydride is 28.6:1; the oil-based paraffin remover and inhibitor comprises, by weight, 70-95% of the paraffin remover, 2.5-15% of the paraffin inhibitor I and 2.5-15% of the paraffin inhibitor II. The oil-based paraffin remover and inhibitor has the advantages that the paraffin inhibition effect of a high-molecular polymer with octadecyl acrylate and styrene as raw materials is the best, paraffin inhibition rate analysis is carried out on oil samples, and the paraffin inhibition rate can reach over 40%.

Description

technical field [0001] The invention relates to an anti-wax agent, in particular to an oil-based anti-wax agent. Background technique [0002] At present, the wax content of crude oil in my country's oilfields is much higher than that of foreign countries, such as Daqing Oilfield, Shengli Oilfield, Jiangsu Oilfield, Jidong Oilfield, etc. Some oilfields even have a high content of 40%, and also contain colloids with high density and viscosity asphaltenes. Waxes are dissolved in crude oil in a molecular state under oil reservoir conditions, and the light components have not yet escaped. At this time, the crude oil has a strong wax-dissolving ability, so the oil well and the bottom of the well are not easy to deposit wax. When the oil flow is closer to the ground, the temperature is lower than the cloud point of the crude oil, and the pressure is lower than the saturation pressure of the crude oil, the light components begin to overflow from the crude oil, the wax-dissolving ab...

Claims

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Application Information

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IPC IPC(8): C09K8/524
CPCC09K8/524
Inventor 李学文吴梦娇吉树鹏李树军贾广华
Owner CHINA PETROLEUM & CHEM CORP
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