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Environment-friendly paraffin remover and inhibitor used for oil field and oil well and preparation method thereof

A technology for removing wax and oil wells, which is applied in chemical instruments and methods, cleaning tools, earthwork drilling and production, etc., and can solve problems such as oil well production decline, reservoir damage, and tubing blockage

Active Publication Date: 2018-12-14
沧州中润化学助剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[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, etc., resulting in a decline in oil production of the oil well

Method used

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  • Environment-friendly paraffin remover and inhibitor used for oil field and oil well and preparation method thereof
  • Environment-friendly paraffin remover and inhibitor used for oil field and oil well and preparation method thereof
  • Environment-friendly paraffin remover and inhibitor used for oil field and oil well and preparation method thereof

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preparation example Construction

[0030] The present invention also provides a preparation method of the above-mentioned environment-friendly paraffin removal agent for oil wells, comprising the following steps:

[0031] Add the non-ionic gemini surfactant to the water and stir at 20-30°C for 40-60 minutes, then add the resin, glyceryl monostearate, N,N'-dilauroyl ethylenediamine diacetate sodium, 3-dodecane Oxy-2-hydroxypropyltrimethylammonium chloride, fatty alcohol polyoxyethylene ether, sodium pyrophosphate, ethylene glycol butyl ether, maleic anhydride, scale inhibitor, stirred for 4 to 6 hours, and the oil field Environmental protection paraffin remover for oil well.

[0032] Among them, resin, glyceryl monostearate, N,N'-sodium dilauroyl ethylenediamine diacetate, 3-dodecyloxy-2-hydroxypropyltrimethylammonium chloride, fatty alcohol polyoxygen Vinyl ether, sodium pyrophosphate, ethylene glycol butyl ether, maleic anhydride, nonionic gemini surfactant, scale inhibitor and water are all the same as above...

Embodiment 1

[0036] The environment-friendly wax removing and preventing agent for oil wells in oil fields comprises the following raw materials in parts by weight:

[0037] 16 parts of C9 petroleum resin, 13 parts of glyceryl monostearate, 2 parts of N,N'-dilauroyl ethylenediamine sodium diacetate, 20 parts of 3-dodecyloxy-2-hydroxypropyl trimethyl Ammonium chloride, 10 parts of fatty alcohol polyoxyethylene ether, 7 parts of sodium pyrophosphate, 10 parts of ethylene glycol butyl ether, 5 parts of maleic anhydride, 3 parts of N,N'-dialkyl-N,N' - Diglucose malonamide, 1.6 parts antiscalant and 40 parts water;

[0038] The scale inhibitor includes horse-propylene copolymer, dodecylamine polyoxyethylene ether, sodium polyacrylate, hydroxypropyl acrylate and ethylene glycol with a mass ratio of 0.6:1.3:1.4:0.6:1.1;

[0039] The preparation method of environment-friendly paraffin removing and preventing agent for oil field oil well comprises the following steps:

[0040] Add N,N'-dialkyl-N,...

Embodiment 2

[0042] The environment-friendly wax removing and preventing agent for oil wells in oil fields comprises the following raw materials in parts by weight:

[0043] 14 parts of C5 petroleum resin, 17 parts of glyceryl monostearate, 4 parts of N,N'-dilauroyl ethylenediamine sodium diacetate, 10 parts of 3-dodecyloxy-2-hydroxypropyl trimethyl Ammonium chloride, 8 parts of fatty alcohol polyoxyethylene ether, 6 parts of sodium pyrophosphate, 7 parts of ethylene glycol butyl ether, 7 parts of maleic anhydride, 3.5 parts of N,N'-dialkyl-N,N' - Diglucose malonamide, 1.3 parts antiscalant and 45 parts water;

[0044] The scale inhibitor includes horse-propylene copolymer, dodecylamine polyoxyethylene ether, sodium polyacrylate, hydroxypropyl acrylate and ethylene glycol with a mass ratio of 0.7:1.7:1.2:0.4:1.3;

[0045] The preparation method of environment-friendly paraffin removing and preventing agent for oil field oil well comprises the following steps:

[0046]Add N,N'-dialkyl-N,N...

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PUM

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Abstract

The invention discloses an environment-friendly paraffin remover and inhibitor used for an oil field and an oil well and a preparation method thereof, wherein the paraffin remover and inhibitor, having high paraffin removal and inhibition efficiency, is prepared from: resin, glyceryl monostearate, N,N'-bislauroylethanediamine sodium diacetate, 3-dodecyloxy-2-hydroxypropyltrimethyl ammonium chloride, fatty alcohol-polyoxyethylene ether, sodium pyrophosphate, ethylene glycol butyl ether, maleic anhydride, a nonionic gemini surfactant, a scale inhibitor and water. The paraffin remover and inhibitor is free of volatilization of irritating odors, is safe to human body and environment, is free of corrosion on equipment, and has great safety.

Description

technical field [0001] The invention relates to the field of oil field exploitation, in particular to an environment-friendly wax remover and anti-wax agent for oil wells in oil fields and a preparation method thereof. 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...

Claims

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Application Information

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IPC IPC(8): C09K8/524E21B37/06
CPCC09K8/524E21B37/06
Inventor 赵建龙李会勇郜杨郑金中贾叶飞
Owner 沧州中润化学助剂有限公司
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