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Ionic liquid type heavy oil viscosity reducer prepared by utilizing microorganism surface active agent and preparation method

A technology of surfactant and viscosity reducer for heavy oil, applied in chemical instruments and methods, drilling composition, etc. The effect of strong stability, strong operability and easy configuration

Inactive Publication Date: 2018-06-12
DAQING HUALI ENERGY BIOLOGICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Heavy oil contains a large amount of colloid, asphaltenes and a small amount of wax, resulting in high viscosity and poor fluidity, which brings great difficulties to the exploitation and transportation of heavy oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of ionic liquid type heavy oil viscosity reducer prepared by utilizing microbial surfactant of the present invention is composed of the following components by mass percentage:

[0023] Ionic liquid lipopeptide 30~80%

[0024] Anionic surfactant 0.5~5%

[0025] Non-ionic surfactant 0.5~10%

[0026] Ionic liquid balance.

[0027] Wherein, the solute of ionic liquid lipopeptide is lipopeptide, the solvent is ionic liquid, wherein the content of lipopeptide is 1-10% by weight;

[0028] The ionic liquid can be a cationic liquid or an anionic liquid, wherein the cation is an alkyl quaternary ammonium ion [NR x h 4-x ] + , Alkyl quaternary phosphonium ion [PR X h 4-X ] + , 1,3-dialkyl substituted imidazolium ion [R 1 R 3 im] + , N-alkyl substituted pyridinium ion [RPy] + One or more than one combination in any weight ratio; the anion is a halide ion or BF 4 - 、PF 6 - 、CF 3 SO 3 - , (CF 3 SO 2 ) 2 N - 、C 3 f 7 COO - 、C 4 f 9 SO 3 - 、CF 3 ...

Embodiment 2

[0032] Prepare above-mentioned a kind of ionic liquid type thick oil viscosity reducer that utilizes microbial surfactant preparation, method is as follows:

[0033] a. Preparation of ionic liquid lipopeptide: use Bacillus subtilis ACCC01430 to prepare a lipopeptide biosurfactant after fermentation, then carry out acid precipitation treatment on the lipopeptide biosurfactant under the condition of pH=2, and then Retain the precipitate and dissolve it in water, filter it with a 100kDa polyethersulfone ultrafiltration membrane, collect the filtrate and freeze-dry it, and dissolve the freeze-dried powder in the ionic liquid to prepare an ionic liquid with a lipopeptide content of 1% type lipopeptide, wherein the ionic liquid is an alkyl quaternary ammonium ion [NR x h 4-x ] + and alkyl quaternary phosphonium ions [PR X h 4-X ] + Mixed solution with a weight ratio of 1:3;

[0034] b. Preparation of finished product: at 40°C, mix 30% of the ionic liquid lipopeptide prepared i...

Embodiment 3

[0038] Prepare above-mentioned a kind of ionic liquid type thick oil viscosity reducer that utilizes microbial surfactant preparation, method is as follows:

[0039] a. Preparation of ionic liquid lipopeptide: use Bacillus subtilis ACCC01430 to prepare a lipopeptide biosurfactant after fermentation, then carry out acid precipitation treatment on the lipopeptide biosurfactant at pH=3, and then Retain the precipitate and dissolve it in water, filter it with a 100kDa polyethersulfone ultrafiltration membrane, collect the filtrate and freeze-dry it, and dissolve the freeze-dried powder in the ionic liquid to prepare an ionic liquid with a lipopeptide content of 10% Type lipopeptide, wherein the ionic liquid is BF 4 - 、PF 6 - and CF 3 SO 3 - Mixed liquid in a weight ratio of 2:5:1;

[0040] b. Preparation of finished product: at 70°C, mix 80% of the ionic liquid lipopeptide prepared in step a with 5% of anionic surfactant, and stir for 120 minutes; then add 10% of nonionic l...

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Abstract

The invention provides an ionic liquid type heavy oil viscosity reducer prepared by utilizing a microorganism surface active agent and a preparation method, and relates to the technical field of petrochemical engineering. The ionic liquid type heavy oil viscosity reducer is prepared from the following components of, in percentage by mass:, 30-80% of ionic liquid type lipopeptid, 0.5-5% of an anionic surface active agent, 0.5-10% of a nonionic surface active agent and the balance of ionic liquid. By utilizing a surface active agent ionic liquid type lipopeptid solution formed through microorganism fermentation, the heavy oil viscosity reducer is prepared through a combination method, compared with an existing chemical viscosity reducer, the ionic liquid type heavy oil viscosity reducer hasphysicochemical properties of ionic liquid while having relatively high characteristics of salt tolerance, high temperature resistance, and effectively reducing the oil-water interfacial tension and surface tension, and can be applied to the conditions with a wide temperature range, the physicochemical stability is high, the heavy oil viscosity reducing effect of the ionic liquid type heavy oil viscosity reducer can reach 80%-95%, and the heavy oil viscosity reducer is safe and environmentally friendly, simple and convenient in configuration and high in operability.

Description

technical field [0001] The invention relates to the technical field of petrochemical industry, in particular to a preparation method of an ionic liquid type heavy oil viscosity reducer by utilizing a microbial surfactant. Background technique [0002] As a kind of unconventional crude oil, heavy oil accounts for more than 20% of the world's proven crude oil reserves. As the output of light crude oil continues to decrease and the demand for petroleum energy resources increases year by year, it is more urgent to exploit heavy oil to fill the gap. Heavy oil contains a large amount of colloids, asphaltenes and a small amount of wax, resulting in high viscosity and poor fluidity, which brings great difficulties to the exploitation, gathering and transportation of heavy oil. [0003] The research on biosurfactants was first seen in 1946. ZoBell proposed that the surfactant produced by microorganisms is one of the important mechanisms for microorganisms to enhance oil recovery. Af...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/584C09K8/58
CPCC09K8/58C09K8/584
Inventor 李波高文博王宝柱李国军王柱沈玉江王强吴连贺冯丽苹徐龙广
Owner DAQING HUALI ENERGY BIOLOGICAL TECH
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