Pour point depressing and viscosity reducing composition for heavy oil, pour point depressing and viscosity reducing agent for heavy oil and preparation method of pour point depressing and viscosity reducing agent

A technology of composition and viscosity reducing agent, which is applied in the field of heavy oil pour point depressing composition, can solve the problems of unsatisfactory pour point depressing effect of heavy oil, single viscosity reducing performance, poor pour point depressing effect of heavy oil with high pour point, etc. Achieve the effect of realizing emulsion stabilization, improving oil recovery efficiency and improving stability

Active Publication Date: 2016-09-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water-soluble viscosity reducer has good emulsification and viscosity reduction effect, but poor pour point reduction effect for heavy oil with high pour point
[0009] To sum up, currently used emulsified viscosity reducers often only have a single viscosity reduction performance, and the pour point reduction effect for heavy oil with a high pour point is not ideal

Method used

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  • Pour point depressing and viscosity reducing composition for heavy oil, pour point depressing and viscosity reducing agent for heavy oil and preparation method of pour point depressing and viscosity reducing agent

Examples

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Effect test

Embodiment 1

[0038] The heavy oil pour point and viscosity reducing composition of the present embodiment is composed of the following components by weight: 30g surfactant nonylphenol polyoxyethylene ether sodium sulfate, 10g dispersant, 15g inhibitor edetate disodium, 30g co-emulsifier sodium lignosulfonate;

[0039] The dispersant is made by mixing 2g of sodium petroleum sulfonate and 8g of octadecylamine polyoxyethylene ether;

[0040] The degree of polymerization of the polyoxyethylene group in the nonylphenol polyoxyethylene ether sodium sulfate is 10, and the degree of polymerization of the polyoxyethylene group in the stearylamine polyoxyethylene ether is 10.

[0041] The pour point and viscosity reducer for heavy oil in this embodiment is prepared from the above thick oil pour point and viscosity reducer composition and 15 g of water.

[0042] The preparation method of the heavy oil pour point and viscosity reducer of the present embodiment comprises the steps:

[0043] Add the i...

Embodiment 2

[0045] The thick oil pour point and viscosity reducing composition of the present embodiment is made up of the following components by weight: 40g surfactant sodium pentadecyl alcohol polyoxyethylene ether sulfonate, 5g dispersant stearylamine polyoxyethylene ether, 18g inhibitor Aminotriacetic acid, 25g co-emulsifier sodium lignosulfonate;

[0046] The degree of polymerization of the polyoxyethylene group in the above-mentioned sodium pentadecyl alcohol polyoxyethylene ether sulfonate is 2, and the degree of polymerization of the polyoxyethylene group in the stearylamine polyoxyethylene ether is 12;

[0047] The pour point and viscosity reducer for heavy oil in this embodiment is made from the above heavy oil point point and viscosity reducer composition and 12 g of water.

[0048] The preparation method of the heavy oil pour point and viscosity reducer of the present embodiment comprises the steps:

[0049] Add the inhibitor to 12 g of deionized water, stir until the inhibi...

Embodiment 3

[0051] The heavy oil pour point and viscosity reducing composition of the present embodiment consists of the following components by weight: 50g surfactant sodium stearyl polyoxyethylene ether sulfonate, 12g dispersant, 15g inhibitor ammonium citrate, 20g emulsifying aid Sodium lauryl polyether sulfonate;

[0052] The dispersant is made by mixing 10g of sodium petroleum sulfonate and 2g of octadecylamine polyoxyethylene ether;

[0053] The degree of polymerization of the polyoxyethylene group in the above-mentioned sodium stearyl polyoxyethylene ether sulfonate is 3, and the degree of polymerization of the polyoxyethylene group in the stearylamine polyoxyethylene ether is 30.

[0054] The pour point and viscosity reducer for heavy oil in this embodiment is prepared from the above heavy oil point point and viscosity reducer composition and 3 g of water.

[0055] The preparation method of the heavy oil pour point and viscosity reducer of the present embodiment comprises the ste...

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Abstract

The invention relates to pour point depressing and viscosity reducing composition for heavy oil, a pour point depressing and viscosity reducing agent for the heavy oil and a preparation method of the pour point depressing and viscosity reducing agent, and belongs to the technical field of oil exploitation. The pour point depressing and viscosity reducing composition for the heavy oil comprises components in parts by weight as follows: 25-55 parts of a surfactant, 5-20 parts of a dispersing agent, 15-20 parts of an inhibitor and 20-50 parts of a co-emulsifier, wherein the dispersing agent contains polyoxyethylene alkyl amine, and polyoxyethylene alkyl amine accounts for not lower than 9% of the dispersing agent in percentage by mass. The pour point depressing and viscosity reducing composition for the heavy oil has good emulsifying viscosity reduction functions on the heavy oil with the gum asphalt content of 40% and the freezing point of 40 DEG C, the viscosity reducing rate can be up to 99% or higher and the pour point depressing range can be up to 15 DEG C or higher only through addition of 0.5% by mass of the pour point depressing and viscosity reducing agent product, and the problems of high entering-pump resistance of crude oil and difficulty in shaft lifting can be solved very well.

Description

technical field [0001] The invention relates to a heavy oil pour point and viscosity reducer composition, a heavy oil pour point and viscosity reducer and a preparation method thereof, belonging to the technical field of petroleum exploitation. Background technique [0002] Heavy crude oil with high viscosity is also called heavy oil in the world, and it is commonly called heavy oil in my country. Compared with ordinary crude oil, heavy oil not only has common characteristics of petroleum, but also has unique properties. The content of light components in heavy oil is low, the content of straight-chain hydrocarbons is small, and the content of asphaltenes and colloids is high. As a result, most of the heavy oil has the characteristics of high viscosity and high density, and it is difficult to recover. There are two main reasons: on the one hand, due to the high viscosity and poor fluidity of heavy oil, it is difficult to flow into the wellbore from the reservoir due to the ...

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 李飞鹏王剑王若浩温栋良杨安国纪国帅孙迎胜
Owner CHINA PETROLEUM & CHEM CORP
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