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Efficient thick-oil emulsified adhesive-reducing agent

A technology for emulsification and viscosity reduction, heavy oil, applied in chemical instruments and methods, drilling compositions, etc., can solve problems such as salt resistance or temperature resistance or unsatisfactory viscosity reduction efficiency, and achieve the reduction of viscosity of heavy oil, The effect of improving oil recovery and improving viscosity reduction effect

Active Publication Date: 2007-11-14
DAQING HUAYING CHEM IND
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  • Description
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Problems solved by technology

In the traditional heavy oil emulsification viscosity reducer, the hydrophilic group of each component surfactant is a single group, and its salt resistance or temperature resistance or viscosity reduction efficiency is not ideal, so it needs to be used in combination

Method used

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  • Efficient thick-oil emulsified adhesive-reducing agent
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Embodiment Construction

[0017] A high-efficiency thick oil emulsifying viscosity reducer of the present invention is composed of polycyclic aromatic hydrocarbon organic matter, alkenyl carboxylate, catalyst, sodium sulfite or sodium bisulfite, ethanol, polyoxyethylene polyoxypropylene ether of stearyl alcohol and long-chain Alcohol is prepared by the following steps in parts by weight:

[0018] a. Mix 5 to 12 parts of polycyclic aromatic hydrocarbons, 1 to 5 parts of alkenyl carboxylate, and 0.08 to 1 part of catalyst, and react at 60°C to 90°C for 1 to 3 hours;

[0019] b. Add 1 to 5 parts of sodium sulfite or sodium bisulfite and 0.5 to 3 parts of ethanol to the reaction solution in step a, and react under reflux for 1 to 4 hours;

[0020] c. Add 1 to 5 parts of stearyl alcohol polyoxyethylene polyoxypropylene ether and 0.5 to 4 parts of long-chain alcohol to the substance in step b, and reflux for 0.5 to 2 hours, that is, the synthetic effective content is 20% to 60%. Efficient heavy oil emulsify...

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Abstract

The present invention is high-effective consistency oil emulsify decrease dehesion agent. The way of making it is under the temperature of 60-90Deg.c. Put the polycyclic arene organics and thiazolinyl carboxylic acid ester together, after their reaction, resulfonated them, a new surface-active agent is produced and then put the polyether non-ionic surface active agent, after reaction, the final object is the present invention. The advantages are: increase efficiency of decrease dehesion, decreases consistency oil dehesion, makes crude oil splinted from rocks surface easy, increases the production.

Description

technical field [0001] The invention relates to a viscosity reducer, in particular to a high-efficiency thick oil emulsification viscosity reducer capable of forming a low-viscosity emulsion. Background technique [0002] Heavy oil refers to the crude oil whose viscosity of degassed crude oil exceeds 100mPa.s at the oil reservoir temperature. Heavy oil contains high content of colloid, asphaltene and paraffin, high viscosity and poor fluidity, so it is very difficult to extract and gather and transport, and needs to be heated or diluted. Using conventional thermal recovery technology alone has poor effect and high cost. Some physical or chemical methods must be adopted to modify or modify heavy oil to reduce viscosity and improve fluidity, thereby increasing the recovery rate and recovery factor. The viscous reduction technology of modified heavy oil used in industry includes emulsification and viscosity reduction with aqueous solution of surfactant, viscosity reduction wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/52
Inventor 李宣京韩秋月刘正醌石红敏
Owner DAQING HUAYING CHEM IND
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