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High temperature resistance super heavy oil viscosity reducer used with steam and preparation method thereof

A technology of viscosity reducer and high temperature resistance, used in the field of viscosity reducer for heavy oil, which can solve the problems of poor temperature resistance, low viscosity reduction rate and poor thermal stability.

Inactive Publication Date: 2013-09-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because some substances contained in this type of water-soluble viscosity reducer are easy to decompose at high temperature and have poor thermal stability, so the viscosity reducer is not resistant to high temperature
For Leant super heavy oil, currently commercially available viscosity reducers have the problems of low viscosity reduction rate and poor temperature resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] a. Add 1.0 parts by weight of sodium bicarbonate and 5.0 parts by weight of high-temperature film extender XLB-1 to 10.0 parts by weight of water, fully stir until dissolved, and obtain a solution;

[0021] b. adding 40 parts by weight of petroleum sodium sulfonate formaldehyde condensate to the dissolving solution of step a, stirring until dissolving to obtain a mixed solution;

[0022] c. Add 30 parts by weight of sodium nonylphenol polyoxyethylene ether sulfonate to the mixed liquid in step b, stir until dissolved, and obtain the product.

Embodiment 2

[0024] a. Add 2.0 parts by weight of sodium bicarbonate and 2.0 parts by weight of high-temperature film extender XLB-1 to 30.0 parts by weight of water, fully stir until dissolved, and obtain a solution;

[0025] b. adding 65 parts by weight of petroleum sodium sulfonate formaldehyde condensate to the dissolving solution of step a, stirring until dissolving to obtain a mixed solution;

[0026] c. Add 10 parts by weight of sodium nonylphenol polyoxyethylene ether sulfonate to the mixed liquid in step b, stir until dissolved, and obtain the product.

Embodiment 3

[0028] a. Add 1.0 parts by weight of sodium bicarbonate and 5.0 parts by weight of high-temperature film extender XLB-1 to 10.0 parts by weight of water, fully stir until dissolved, and obtain a solution;

[0029] b. adding 48 parts by weight of petroleum sodium sulfonate formaldehyde condensate to the dissolving solution of step a, stirring until dissolving to obtain a mixed solution;

[0030] c. Add 23 parts by weight of sodium nonylphenol polyoxyethylene ether sulfonate to the mixed liquid in step b, stir until dissolved, and obtain the product.

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Abstract

The invention provides a high temperature resistance super heavy oil viscosity reducer used with steam and its preparation method. The viscosity reducer comprises the following raw materials by weight ratio: 40-65% of petroleum sulfonate formaldehyde condensation product, 10-30% of sodium nonyl phenol polyethyleneoxy ether sulfonate or fatty alcohol polyoxyethylene ether sodium sulphaste, 1.0-2.0% of sodium bicarbonate, 10.0-30.0% of water and 2.0-5.0% of high temperature film spreading agent. The method comprises the following steps: a. adding sodium bicarbonate and the high temperature film spreading agent in water, fully stirring to dissolve for acquiring dissolving liquid; b. adding petroleum sulfonate formaldehyde condensation product into the dissolving liquid obtained in a step a, stirring to dissolve for acquiring mixed liquor; c. adding sodium nonyl phenol polyethyleneoxy ether sulfonate or fatty alcohol polyoxyethylene ether sodium sulphaste into the mixed liquor obtained in a step b, stirring to dissolve for acquiring the product. The viscosity reducer of the present invention has the characteristic of high viscosity reduction rate and high temperature resistance.

Description

technical field [0001] The invention relates to a heavy oil viscosity reducer used in oil field development, in particular to a high temperature resistant extra heavy oil viscosity reducer with steam and a preparation method thereof. Background technique [0002] At present, ordinary heavy oil fields are generally developed by water injection, and super-heavy oil fields are generally developed by steam injection. In order to improve the quality of steam injection and reduce the viscosity of crude oil, it is usually supplemented by adding a viscosity reducer. In the heavy oil blocks of some oilfields, the viscosity of crude oil is generally 2000-70000mPa.s. Due to the high viscosity and poor fluidity of crude oil, it brings difficulties to mining and gathering and transportation. Currently, the viscosity reducers used in oil fields include oil-soluble viscosity reducers and water-soluble viscosity reducers. Oil-soluble viscosity reducers are generally flammable and have a lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/584
Inventor 高文华张红丽胡增国崔新栋毕志峰董丽新胡燕
Owner CHINA PETROLEUM & CHEM CORP