Preparation of nano composite material high-wax-content heavy oil viscosity reducer and performance testing

A thick oil viscosity reducer and nanocomposite material technology, which is applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the cumbersome and complicated treatment of emulsified viscosity reducer, low viscosity reduction rate of oil-soluble viscosity reducer, and Problems such as poor coagulation viscosity reduction effect, etc., to achieve the effect of easy mass production, easy promotion, and good viscosity reduction effect

Active Publication Date: 2016-12-07
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for high-wax crude oil, technologies such as heating viscosity reduction technology, thin oil blending viscosity reduction technology, hydrothermal catalytic cracking viscosity reduction technology, emulsification viscosity reduction method, oil-soluble viscosity reduction agent and other technologies are generally used at present, but the above methods have shortcomings In addition, the heating viscosity reduction technology often has condensation pipe accidents and high energy consumption; the viscosity reduction technology mixed with thin oil, for crude oil with high wax content and h...

Method used

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  • Preparation of nano composite material high-wax-content heavy oil viscosity reducer and performance testing
  • Preparation of nano composite material high-wax-content heavy oil viscosity reducer and performance testing
  • Preparation of nano composite material high-wax-content heavy oil viscosity reducer and performance testing

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Experimental program
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Effect test

Embodiment 1

[0046] Embodiment 1: the preparation method of polyoctearyl methacrylate-acrylamide / MSN, the steps are as follows:

[0047] Synthetic MSN:

[0048] Add 108ml distilled water and 0.5g CTAB successively in the reactor, stir at a certain temperature, CTAB (hexadecyltrimethylammonium bromide) is completely dissolved, add 2ml of ammonia water, the whole system is kept at a certain temperature and continuously Stir. Stir at a constant speed of 1500 rpm to make it evenly mixed, and after 15 minutes, add 2 ml of TEOS (tetraethyl orthosilicate). Slowly raise the temperature to 60°C and keep it, and react for 24 hours to ensure the completion of the reaction. Then, centrifuge, wash, and dry. Obtain ordered mesoporous silica microspheres (MSN) using neutral template and water as solvent;

[0049] Surface and pore pre-modification of MSN by silane coupling agent:

[0050] Add 50ml of absolute ethanol, 1ml of acetic acid, 1ml of distilled water, and 1ml of γ-methacryloxypropyltrimethy...

Embodiment 2

[0061] The preparation method of embodiment 2 nanometer polyoctadecyl methacrylate-acrylamide / MSN, step is with embodiment 1, and difference is in (1) step, replaces hexadecane with octadecyltrimethylsilane trimethylammonium bromide.

Embodiment 3

[0062] The preparation method of embodiment 3 nanometer polyoctadecyl methacrylate-acrylamide / MSN, step is the same as embodiment 1, and difference is that in (2) replace gamma-methyl with 3-aminopropyltriethylsilane Acryloxypropyltrimethylsilane.

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PUM

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Abstract

The invention discloses a nano composite material high-wax-content heavy oil viscosity reducer and a preparation method thereof and belongs to the technical field of nano composite material preparation and application. The viscosity reducer is a nano polymethylacrylic acid high carbon alcohol-acrylamide composite material. The preparation method of the viscosity reducer comprises the steps that surface pre-modification is conducted on synthesized MSN by using a silane coupling agent, and polymethylacrylic acid high carbon alcohol-acrylamide composite material powder is obtained through graft copolymerization of methylacrylic acid high carbon alcohol-acrylamide on the surface and pore channels of the MSN. The nano viscosity reducer has a good viscosity reduction effect, is low in cost, simple in production and clean and free of pollution in the process. An experiment proves that the viscosity reduction rate of the nano composite material high-wax-content heavy oil viscosity reducer is 70.30% Daqing Linyuan Sanku high-wax-content heavy oil at the temperature of 40 DEG C and is 79.37% for Daqing Dandong station high-wax-content heavy oil at the temperature of 40 DEG C. The steps are simple, the operation is convenient, and the practicability is strong.

Description

technical field [0001] The invention belongs to the field of MSN composite material preparation technology and application, in particular to the preparation and performance test of a nano-material high-wax thick oil viscosity reducer. Background technique [0002] The world's heavy oil resources are extremely rich, and its geological reserves far exceed conventional crude oil. my country has discovered more than 70 heavy oil fields in 12 basins, and its resources account for about 25% to 30% of the total oil resources. With the less and less recoverable light crude oil and the continuous improvement of extraction technology, the exploitation of heavy oil resources has attracted more and more attention from all over the world. However, high density, high freezing point, high viscosity, and difficult flow are the outstanding characteristics of my country's heavy oil resources. Therefore, reducing the viscosity of heavy oil and improving its fluidity is the key to solve the p...

Claims

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Application Information

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IPC IPC(8): C09K8/588
CPCC09K8/588C09K2208/10
Inventor 张长桥李若雪詹立新卢丽丽
Owner SHANDONG UNIV
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