Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of preparation method of high temperature resistant heavy oil viscosity reducer

A heavy oil viscosity reducer and high temperature resistant technology, applied in the field of heavy oil viscosity reducer, can solve the problems that the viscosity reducer cannot achieve the effect, the chemical agent structure is easy to change, etc., achieve excellent heat resistance and improve heat resistance , enhance the effect of adsorption strength

Active Publication Date: 2021-04-09
山东奥士德石油技术有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for relatively extreme high-temperature reservoirs, the structure of the chemical agent is easily changed in the extreme environment, which eventually leads to the failure of the viscosity reducer to achieve the desired effect

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method of high temperature resistant heavy oil viscosity reducer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A high temperature resistant heavy oil viscosity reducer, comprising the following raw materials in parts by weight: 15 parts of main agent, 10 parts of auxiliary agent, 55 parts of solvent, and 5 parts of ethylene-vinyl acetate copolymer;

[0035] The high temperature resistant heavy oil viscosity reducer is made by the following method:

[0036] Add ethylene-vinyl acetate copolymer into the solvent, stir at a constant speed at 45°C until it is completely dissolved, then add the main agent and auxiliary agent in sequence, raise the temperature to 60°C, stir at a constant speed at this temperature and ultrasonically disperse for 4±0.5h, control The ultrasonic power is 60W, and the high temperature resistant heavy oil viscosity reducer is prepared.

[0037] The solvent is composed of 200°C petroleum fraction, which is 200# solvent naphtha.

[0038] The main agent is made by the following method:

[0039] Step S1, add maleic anhydride into a three-necked flask, add deio...

Embodiment 2

[0047] A high temperature resistant heavy oil viscosity reducer, comprising the following raw materials in parts by weight: 20 parts of main agent, 12 parts of auxiliary agent, 65 parts of solvent, and 6 parts of ethylene-vinyl acetate copolymer;

[0048] The high temperature resistant heavy oil viscosity reducer is made by the following method:

[0049] Add ethylene-vinyl acetate copolymer into the solvent, stir at a constant speed at 45°C until it is completely dissolved, then add the main agent and auxiliary agent in sequence, raise the temperature to 60°C, stir at a constant speed at this temperature and ultrasonically disperse for 4±0.5h, control The ultrasonic power is 60W, and the high temperature resistant heavy oil viscosity reducer is prepared.

[0050] The solvent is composed of 200°C petroleum fraction, which is 200# solvent naphtha.

[0051] The main agent is made by the following method:

[0052] Step S1, add maleic anhydride into a three-necked flask, add deio...

Embodiment 3

[0060] A high temperature resistant heavy oil viscosity reducer, comprising the following raw materials in parts by weight: 30 parts of main agent, 14 parts of auxiliary agent, 70 parts of solvent, and 8 parts of ethylene-vinyl acetate copolymer;

[0061] The high temperature resistant heavy oil viscosity reducer is made by the following method:

[0062]Add ethylene-vinyl acetate copolymer into the solvent, stir at a constant speed at 45°C until it is completely dissolved, then add the main agent and auxiliary agent in sequence, raise the temperature to 60°C, stir at a constant speed at this temperature and ultrasonically disperse for 4±0.5h, control The ultrasonic power is 60W, and the high temperature resistant heavy oil viscosity reducer is prepared.

[0063] The solvent is composed of 200°C petroleum fraction, which is 200# solvent naphtha.

[0064] The main agent is made by the following method:

[0065] Step S1, add maleic anhydride into a three-necked flask, add deion...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
quality scoreaaaaaaaaaa
quality scoreaaaaaaaaaa
quality scoreaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of petroleum development, and specifically discloses a preparation method of a high-temperature resistant heavy oil viscosity reducer, which comprises the following raw materials in parts by weight: 15-35 parts of main agent, 10-15 parts of auxiliary agent, 55-80 parts of solvent, 5 parts by weight -10 parts of ethylene-vinyl acetate copolymer; the preparation method is as follows: add ethylene-vinyl acetate copolymer into the solvent, stir at a constant speed at 45-55°C until it is completely dissolved, then add the main agent and auxiliary agent in turn, and heat up to 60 ‑65°C, at this temperature, stir at a constant speed and ultrasonically disperse for 4±0.5h, control the ultrasonic power to 60‑80W, and prepare a high temperature resistant heavy oil viscosity reducer; asphaltenes in heavy oil show different charges in different solvents, this In the invention, by preparing an additive containing an amphoteric polymer, adding it to the heavy oil can reduce the particle size of the asphaltene micelles, increase the degree of dispersion, and then reduce the viscosity of the heavy oil.

Description

technical field [0001] The invention relates to a heavy oil viscosity reducer, in particular to a preparation method of a high temperature resistant heavy oil viscosity reducer. Background technique [0002] Heavy oil is rich in colloid and asphaltene, and contains more elements such as sulfur, oxygen, nitrogen, and metal compounds such as nickel and vanadium, and the content of light fraction is relatively low. The light fraction of crude oil produced in many heavy oil fields ( 300°C) is generally only about 10%. The paraffin content in heavy oil is generally low, and the wax content in crude oil of most heavy oil fields is only about 5%, generally not more than 10%, so the freezing point is also low. With the increase of resin and asphaltene content, the density and viscosity of heavy oil increase. [0003] For ordinary oil reservoirs, no matter whether it is a polymer or a surfactant type of viscosity reducer, they all have the ability to be produced on a large scale. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08F222/06C08F220/58C08F226/02C08F220/56C08F8/34C08F8/32C08F8/28C09K8/588
CPCC08F8/28C08F8/32C08F8/34C08F222/06C08F226/02C09K8/588C08F220/585C08F220/56
Inventor 高超王志崔伟托君丽朱定
Owner 山东奥士德石油技术有限公司