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High-temperature and high-salt thickened oil emulsifier and preparation method thereof

A high-temperature, high-salt, emulsifier technology, used in chemical instruments and methods, mechanical equipment, drilling compositions, etc., can solve the problem of uneven emulsification degree, unsatisfactory effect, and can not meet the requirements of crude oil viscosity reduction and pour point reduction. requirements and other issues, to achieve the effect of strong adaptability and less dosage

Inactive Publication Date: 2018-10-02
YANTAI ZHIBEN INTPROP OPERATIONS MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the emulsification method used in the oil field is often uneven in the degree of emulsification due to the difference in the formula composition and mechanism of the emulsifier, and its effect is not ideal, which cannot meet the production requirements of crude oil viscosity reduction and pour point reduction

Method used

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  • High-temperature and high-salt thickened oil emulsifier and preparation method thereof
  • High-temperature and high-salt thickened oil emulsifier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) First take the weight of each component by raw material component proportioning;

[0022] (2) Add 50 g of water, 3 g of sodium hexametaphosphate, and 10 g of clay anti-swelling agent into the reactor, heat and stir at a speed of 60 rpm, the heating temperature is 50°C, and the time is 30 minutes;

[0023] (3) Add 10 g of organic acid and 20 g of xanthan gum in turn, and continue stirring at 50° C. for 40 minutes until completely dissolved;

[0024] (4) Add 7 g of alkyl fatty acid polyethanolamides in sequence, and stir at 40° C. for more than 30 minutes until the liquid is clear and transparent;

[0025] (5) Slowly drop 20% sodium hydroxide aqueous solution into the reactor, stir while adding, adjust the pH value to 8, stir and keep warm at 35°C for 20 minutes to obtain the finished product.

Embodiment 2

[0027] (1) First take the weight of each component by raw material component proportioning;

[0028] (2) Add 60 g of water, 5 g of sodium hexametaphosphate, and 5 g of clay anti-swelling agent into the reaction kettle, heat and stir, the rotating speed is 80 rpm, the heating temperature is 60° C., and the time is 50 minutes;

[0029] (3) Add 5 g of organic acid and 10 g of xanthan gum in turn, and continue stirring at 60° C. for 60 minutes until completely dissolved;

[0030] (4) Add 15 g of alkyl fatty acid polyethanolamide in turn, and stir at 60° C. for more than 30 minutes until the liquid is clear and transparent;

[0031] (5) Slowly drop 20% sodium hydroxide aqueous solution into the reactor, stir while adding, adjust the pH value to 8, stir and keep warm at 50°C for 30 minutes to obtain the finished product.

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Abstract

The invention belongs to the technical field of sewage treatment and particularly relates to a high-temperature and high-salt thickened oil emulsifier and a preparation method thereof. The emulsifieris prepared from 7%-15% of alkyl fatty acid polyethanolamide, 5%-10% of organic acid, 10%-20% of xanthan gum, 3%-5% of sodium hexametaphosphate, 5%-10% of a clay anti-swelling agent and the balance ofwater, wherein alkyl fatty acid polyethanolamide is dodecyl fatty acid triethanolamide or octadecyl fatty acid triethanolamide; the organic acid is octanoic acid or stearic acid. The emulsifier is prepared from widely sourced raw materials, a synthesis process is simple, and a product is easy to obtain, transport and store; the emulsifier is high in adaptability and low in dosage and can meet theenvironmental protection and oilfield development demands; the emulsifier has temperature and salt resistance and good emulsification performance, can resist the temperature of 200 DEG C and has themineralization resistance reaching 100,000 mg / L.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to an emulsifier for high-temperature, high-salt heavy oil and a preparation method thereof. Background technique [0002] In crude oil extraction and pipeline transportation, due to the physical and reservoir problems of crude oil, many difficulties will be encountered, such as: difficult extraction and transportation due to thick oil; high freezing point of crude oil, resulting in wax formation in oil wells and pipeline blockage , mining is more difficult. Most of these problems are solved by chemical methods, among which emulsification of crude oil is one of the commonly used methods. The so-called "crude oil emulsification" refers to the use of chemical reagents to emulsify crude oil into an oil-in-water (O / W) phase. At present, the emulsification methods used in oil fields are often uneven in emulsification degree due to the difference in emulsifier formu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/584F17D1/16
CPCC09K8/584C09K2208/12F17D1/16
Inventor 王敏
Owner YANTAI ZHIBEN INTPROP OPERATIONS MANAGEMENT CO LTD