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High-efficiency thick oil viscosity reducer and preparation method thereof

A heavy oil viscosity reducer and additive technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of low viscosity reduction efficiency of the heavy oil viscosity reducer, and achieve the effect of increasing electrostatic repulsion and enhancing affinity. Effect

Pending Publication Date: 2019-08-20
陈光辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a high-efficiency heavy oil viscosity reducer and its preparation method in view of the low viscosity reduction efficiency of the current heavy oil viscosity reducer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] The preparation method of catalytic additive:

[0030] S1. Take zeolite and add hydrochloric acid with a concentration of 1mol / L according to the mass ratio of 1~3:5~10, ultrasonicate at 65~70°C for 1~3h, filter, take the filter residue, wash it with deionized water, and dry it to obtain a dried product. Add ammonium chloride solution with a concentration of 1mol / L to the dry matter at a mass ratio of 1~3:5~9, ultrasonicate for 60~90min, filter, and take the filter residue a;

[0031] S2. Take ammonium molybdate hexahydrate and add deionized water according to the mass ratio of 1~3:8~10, then add sorbitan monooleate with 3~6% deionized water quality, stir and mix for 30~50min, and get mixed Liquid, take the mixed solution according to the mass ratio of 10~20:3~9, add filter residue a, ultrasonic 1~3h, filter, take filter residue b, calcinate at 400~450°C for 1~3h, cool to room temperature, and obtain the catalytic additive.

[0032] The mixed raw material is: take chlo...

Embodiment 1

[0043] Polyethylene glycol monomethyl ether: the molecular weight is 500.

[0044] The preparation method of catalytic additive:

[0045] S1. Take zeolite and add hydrochloric acid with a concentration of 1mol / L according to the mass ratio of 1:5, ultrasonicate at 65°C for 1 hour, filter, take the filter residue, wash it with deionized water, and dry it to obtain a dry product. Take the dry product according to a mass ratio of 1:5 Add ammonium chloride solution with a concentration of 1mol / L, sonicate for 60min, filter, and take the filter residue a;

[0046] S2. Take ammonium molybdate hexahydrate and add deionized water at a mass ratio of 1:8, then add sorbitan monooleate with a mass ratio of 3% of deionized water, stir and mix for 30 minutes to obtain a mixed solution, and take the mixed solution according to the mass ratio Add filter residue a at 10:3, sonicate for 1h, filter, take filter residue b, calcinate at 400°C for 1h, and cool to room temperature to obtain the cat...

Embodiment 2

[0058] Polyethylene glycol monomethyl ether: the molecular weight is 500.

[0059] The preparation method of catalytic additive:

[0060] S1. Take zeolite and add hydrochloric acid with a concentration of 1 mol / L according to the mass ratio of 2:7, ultrasonicate at 67°C for 2 hours, filter, take the filter residue, wash it with deionized water, and dry it to obtain a dry product. Take the dry product according to the mass ratio of 2:7 Add ammonium chloride solution with a concentration of 1mol / L, sonicate for 75min, filter, and take the filter residue a;

[0061] S2. Take ammonium molybdate hexahydrate and add deionized water according to the mass ratio of 2:9, then add sorbitan monooleate with 4% deionized water quality, stir and mix for 40min to obtain a mixed solution, take the mixed solution according to the mass ratio Add filter residue a at 15:6, sonicate for 2 hours, filter, take filter residue b, calcinate at 425°C for 2 hours, and cool to room temperature to obtain t...

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Abstract

The invention discloses a high-efficiency thick oil viscosity reducer and a preparation method thereof, and belongs to the technical field of fossil fuel exploitation. A catalytic additive for preparing the high-efficiency thick oil viscosity reducer is prepared by taking zeolite as a raw material, and catalytic hydrogenation is carried out on a colloid to destroy the three-dimensional associationnetwork structure of the colloid, so that viscosity-reducing substances can well permeate. A surface active agent for preparing the high-efficiency thick oil viscosity reducer is prepared by taking chloropropyl trichlorosilane as a raw material, and the obtained siloxane and quaternary ammonium salt monomers are used for quick oil-in-water emulsification. A steric hindrance expanding additive forpreparing the high-efficiency thick oil viscosity reducer increases dispersion performance, so that viscosity reduction efficiency of thick oil is improved. According to the invention, acrylamide, acrylic acid and monomer alkyl acrylamide are added, so that the viscosity reducer has relatively good salt resistance and temperature resistance. The colloid in the thick oil is subjected to catalyticcracking through the catalytic additive, so that usability of the thick oil viscosity reducer in a high-mineralization state is improved. The invention solves the problem that viscosity reduction efficiency of an existing thick oil viscosity reducer is low.

Description

technical field [0001] The invention belongs to the technical field of fossil fuel exploitation, and in particular relates to a high-efficiency heavy oil viscosity reducer and a preparation method thereof. Background technique [0002] Heavy oil resources are about 25 billion tons, accounting for 28% of the total oil geological reserves. With the continuous exploitation of conventional crude oil, its reserves and output continue to decline. In order to meet the increasing demand for energy in industrial and agricultural production, the development and production of heavy oil will take an increasing proportion. The viscosity of heavy oil is as high as 100mPa·s, and the density is greater than 0.92g / cm 3 . For petroleum, the content and composition of solid hydrocarbons, asphaltenes and colloids are the main factors determining its rheology. The content of asphaltenes and colloids in heavy oil is particularly high, and their structures are complex and their molecular weight...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/588
CPCC09K8/588
Inventor 陈光辉
Owner 陈光辉
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