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A temperature-resistant and salt-resistant composite viscosity reducer and its preparation method and application

A technology of temperature resistance, salt resistance and viscosity reducing agent, applied in the directions of biochemical equipment and methods, chemical instruments and methods, drilling compositions, etc., can solve problems such as viscosity reduction, improve fluidity and reduce oil-water interfacial tension , the effect of high input-output ratio

Active Publication Date: 2021-10-01
天津开发区天盈企业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a temperature-resistant and salt-resistant composite viscosity reducer, which is suitable for high-salt, high-temperature and other complex oil reservoir environments, and solves the problem of viscosity reduction in the production of heavy oil, extra heavy oil and even super heavy oil. problem, and provide the preparation method of the composite viscosity reducer

Method used

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  • A temperature-resistant and salt-resistant composite viscosity reducer and its preparation method and application
  • A temperature-resistant and salt-resistant composite viscosity reducer and its preparation method and application
  • A temperature-resistant and salt-resistant composite viscosity reducer and its preparation method and application

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Effect test

Embodiment 1

[0036] A temperature-resistant and salt-resistant composite viscosity reducer:

[0037](1) Raw materials: 5 parts of biological active substances, 0.5 parts of biological enzymes, 2.0 parts of biological emulsifiers, 0.5 parts of penetrants, 0.1 parts of wetting agents, 1.0 parts of auxiliary agents, 0.1 parts of protective agents and 1000 parts of water;

[0038] Among them: 1. The biologically active substances are obtained by metabolizing the above-mentioned specific bacteria for 10-20 days; the biological enzyme is a mixed enzyme of lipase and protease in a ratio of 1:1.5; the biological emulsifier is xanthan gum;

[0039] ②The penetrating agent is the mixture of alkyl alcohol polyoxyethylene ether and fatty alcohol polyoxyethylene ether according to the mass ratio of 1:1; the wetting agent is polyethylene glycol; the auxiliary agent is sodium hydroxide; the protective agent is trehalose;

[0040] (2) Preparation method: under the conditions of normal pressure and 50-60°C,...

Embodiment 2

[0042] A temperature-resistant and salt-resistant compound viscosity reducer:

[0043] (1) Raw materials: 8 parts of biologically active substances, 1.0 parts of biological enzymes, 2.5 parts of biological emulsifiers, 2.0 parts of penetrants, 0.5 parts of wetting agents, 1.5 parts of auxiliary agents, 0.5 parts of protective agents and 1000 parts of water;

[0044] Among them: ① the biologically active substances are obtained by metabolizing the above-mentioned specific bacteria for 10-20 days; the biological enzyme is a mixed enzyme of lipase, protease and cellulase in a ratio of 1:0.5:1.2; the biological emulsifier is yellow A mixture of progum and rhamnolipid in a ratio of 1:0.5;

[0045] ②The penetrating agent is the mixture of alkyl alcohol polyoxyethylene ether and fatty alcohol polyoxyethylene ether according to the mass ratio of 1:1; the wetting agent is polyethylene glycol; the auxiliary agent is triethanolamine; the protective agent is trehalose;

[0046] (2) Prepa...

Embodiment 3

[0048] A temperature-resistant and salt-resistant compound viscosity reducer:

[0049] (1) Raw materials: 10 parts of biologically active substances, 3.0 parts of biological enzymes, 7.0 parts of biological emulsifiers, 5.0 parts of penetrants, 0.6 parts of wetting agents, 2.0 parts of auxiliary agents, 0.8 parts of protective agents and 1000 parts of water;

[0050] Among them: ① the biologically active substances are obtained by metabolizing the above-mentioned specific bacteria for 10-20 days; the biological enzyme is a mixed enzyme of lipase, protease and cellulase in a ratio of 1:0.5:1.2; the biological emulsifier is yellow A mixture of progum and rhamnolipid in a ratio of 1:0.5;

[0051] ②The penetrating agent is the mixture of alkyl alcohol polyoxyethylene ether and fatty alcohol polyoxyethylene ether according to the mass ratio of 1:1; the wetting agent is polyethylene glycol; the auxiliary agent is triethanolamine; the protective agent is trehalose;

[0052] (2) Prep...

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Abstract

The invention relates to the technical field of viscosity-reducing products, and discloses a temperature-resistant and salt-resistant composite viscosity-reducing agent. The composite viscosity-reducing agent comprises the following components in parts by mass: 5-12 parts of biological active substances, 0.5-5.0 parts of biological enzymes 2.0-10.0 parts of biological emulsifier, 0.5-8 parts of penetrating agent, 0.1-3.0 parts of wetting agent, 1.0-4.0 parts of auxiliary agent, 0.1-2.0 parts of protective agent, and 1000 parts of water; High-salt, high-temperature and other complex reservoir environments solve the problem of viscosity reduction in the production of heavy oil, extra-heavy oil and even super-heavy oil, and provide a preparation method for the compound viscosity reducer.

Description

technical field [0001] The invention relates to the technical field of viscosity-reducing products, in particular to a temperature-resistant and salt-resistant composite viscosity-reducing agent and a preparation method and application thereof. Background technique [0002] In the process of petroleum development, heavy oil has the characteristics of high density, high viscosity and poor fluidity due to its low content of light components, high asphaltene and colloid content, and low linear hydrocarbon content. Mining and transportation are quite difficult. At present, the extraction methods of heavy oil and extra-heavy oil include: mixing thin oil method, heating method, modification and viscosity reduction, and emulsification and viscosity reduction. Oil limitation; heating method consumes a lot of energy and is more dangerous to mine. In contrast, the emulsification viscosity reduction method has received more and more attention due to its wide application range and sim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/58C09K8/584C12N1/00C12N1/02
Inventor 李春清郝中民
Owner 天津开发区天盈企业有限公司
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