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Environment-friendly microemulsion paraffin removal and control agent and preparation method

A microemulsion, environment-friendly technology, applied in the preparation of detergent mixture compositions, chemical instruments and methods, detergent materials, etc., can solve the problems of non-environmental protection, poor biodegradability, large dosage, etc., and achieve stable storage, Good salt and calcium resistance, good biodegradability

Inactive Publication Date: 2016-12-07
BEIJING SHENGCHANG CENTURY PETROLEUM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the consumption of this organic solvent BJ-2 in formula is bigger (60%), biodegradability is poor, does not meet the requirement of environmental protection, therefore need to develop a kind of good biodegradability, do not contain the paraffin wax removing agent of organic solvent

Method used

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  • Environment-friendly microemulsion paraffin removal and control agent and preparation method
  • Environment-friendly microemulsion paraffin removal and control agent and preparation method
  • Environment-friendly microemulsion paraffin removal and control agent and preparation method

Examples

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preparation example Construction

[0024] The preparation method of the environment-friendly microemulsion wax clearing and anti-waxing agent: first add the formula amount of water into the reaction kettle, start stirring, raise the temperature to 50°C, and add the formula amount of emulsifying dispersant and wetting reaction in turn under stirring. Transfer agent, stir at this temperature until uniform, then add the swelling agent in the formula amount under stirring, continue to stir evenly, and obtain the product.

[0025] The formula of the present invention is illustrated below by specific examples.

Embodiment 1

[0027] The swelling agent is C16-18 fatty acid methyl ester, the wetting reversal agent is gemini quaternary ammonium salt, and the emulsifying and dispersing agent is fatty alcohol polyether phosphate salt, and its proportioning is as follows (by mass percentage):

[0028]

[0029] The total mass percentage of the swelling agent, the wetting inversion agent and the emulsifying and dispersing agent is 20%.

[0030] Preparation method: first add 800kg of water to the reaction kettle, start stirring, raise the temperature to 50°C, add 70kg of emulsifying and dispersing agent fatty alcohol polyether phosphate salt, 30kg of wetting reversal agent gemini quaternary ammonium salt in turn under stirring, After stirring at this temperature until uniform, 100 kg of swelling agent gemini quaternary ammonium salt is added under stirring, and the stirring is continued to obtain the product. When the use concentration of this product is 0.3wt‰, the wax-repellent rate of crude oil with 5...

Embodiment 2

[0032] The swelling agent is C12-14 fatty alcohol, the wetting reversal agent is gemini quaternary ammonium salt, and the emulsifying and dispersing agent is fatty alcohol polyether sulfate ester salt, and its proportioning is as follows (by mass percentage):

[0033]

[0034] The total mass percentage of the swelling agent, wetting reversal agent and emulsifying dispersant is 40%.

[0035] Preparation method: first add 600Kg of water into the reaction kettle, start stirring, raise the temperature to 50°C, add 100kg of emulsifying and dispersing agent fatty alcohol polyether sulfate salt and 50kg of wetting reversal agent gemini quaternary ammonium salt successively under stirring, After stirring at this temperature until uniform, add swelling agent C1214 fatty alcohol 250kg under stirring, and continue to stir uniformly to obtain the product. When the concentration of this product is 0.3wt‰, the wax prevention rate of crude oil with 50wt% water content reaches 98.1%, the v...

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Abstract

The invention relates to an environment-friendly microemulsion paraffin removal and control agent. The environment-friendly microemulsion paraffin removal and control agent is prepared from, by mass, 10%-30% of swelling agent, 1%-5% of reverse wetting agent, 1%-10% of emulsion dispersant and the balance water, wherein the total mass percent of the swelling agent, the reverse wetting agent and the emulsion dispersant ranges from 20% to 40%. The environment-friendly microemulsion paraffin removal and control agent has the advantages that the biodegradability is good, no organic solvent is contained, paraffin removal and control are both achieved, the paraffin removal and control agent is suitable for oil wells which are different in degree of mineralization and temperature, stable in storage and convenient to use, and the product is neutral and does not corrode oil pipes.

Description

technical field [0001] The invention relates to the application field of oil field chemistry, in particular to an environment-friendly microemulsion wax remover and preventer with good biodegradability, no organic solution, and functions of wax remover and wax preventer and a preparation method thereof. Background technique [0002] Crude oil in most oilfields in my country has high wax content and high freezing point. During mining and transportation, wax crystals are easy to precipitate with changes in conditions such as temperature and pressure, blocking the wellbore, affecting production, and causing shutdown in severe cases. Among the existing oilfield wax removal and control technologies, the chemical wax removal and control technology is easy to operate and low in cost. Chemical wax removers include oil-based wax removers, water-based wax removers, emulsion wax removers and solid wax removers. Oil-based wax removers have high wax removal efficiency but are toxic, wat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/524
CPCC23F11/10C09K8/524C11D1/74C11D3/2006C11D11/0094C11D17/0021C23G1/061
Inventor 牛文彬
Owner BEIJING SHENGCHANG CENTURY PETROLEUM TECH
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