A kind of preparation method of composite heavy oil viscosity reducer

A heavy oil viscosity reducer and conditional technology, which is applied in the field of preparation of compound heavy oil viscosity reducer, can solve the problems of increased viscosity reduction cost, decreased performance of heavy oil viscosity reducer, low viscosity reduction rate of heavy oil, etc., and achieves good Viscosity reduction effect

Active Publication Date: 2021-03-16
山东奥士德石油技术有限公司 +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the existing heavy oil viscosity reducer is used to reduce the viscosity of high viscosity heavy oil, the viscosity reduction rate of heavy oil is not high, and in the high temperature environment, the performance of the heavy oil viscosity reducer is obviously reduced, and the viscosity reducer currently on the market In order to achieve the viscosity reduction effect, a large amount of viscous oil viscosity reduction agent needs to be added, which increases the cost of viscosity reduction

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 composite heavy oil viscosity reducer
  • A kind of preparation method of composite heavy oil viscosity reducer
  • A kind of preparation method of composite heavy oil viscosity reducer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A preparation method of a composite heavy oil viscosity reducer, specifically comprising the steps of:

[0040] Step S1: Add acrylamide, sodium p-styrenesulfonate, 2-acrylamido-2-methylpropanesulfonic acid, and deionized water into the reaction kettle, and stir until the propylene Amide, sodium p-styrenesulfonate, and 2-acrylamido-2-methylpropanesulfonic acid are completely dissolved to obtain a mixed solution;

[0041] Step S2: Disperse the viscosity-reducing additive in ethanol, stir at a rotational speed of 200r / min, add the mixed solution and azobisisobutyronitrile, and react for 8 hours at a temperature of 70°C , under the condition that the temperature is 110°C, carry out distillation to remove the distillate, and obtain the compound heavy oil viscosity reducer.

[0042] Described viscosity-reducing additive is made by following steps:

[0043] Step A1: Add concentrated sulfuric acid and deionized water into the reaction kettle, stir for 10 minutes at a speed of...

Embodiment 2

[0049] A preparation method of a composite heavy oil viscosity reducer, specifically comprising the steps of:

[0050] Step S1: Add acrylamide, sodium p-styrenesulfonate, 2-acrylamido-2-methylpropanesulfonic acid, and deionized water into the reaction kettle, and stir until the propylene Amide, sodium p-styrenesulfonate, and 2-acrylamido-2-methylpropanesulfonic acid are completely dissolved to obtain a mixed solution;

[0051] Step S2: Disperse the viscosity-reducing additive in ethanol, stir at a speed of 300r / min, add the mixed solution and azobisisobutyronitrile, and react for 10 hours at a temperature of 70°C , under the condition that the temperature is 110°C, carry out distillation to remove the distillate, and obtain the compound heavy oil viscosity reducer.

[0052] Described viscosity-reducing additive is made by following steps:

[0053] Step A1: Add concentrated sulfuric acid and deionized water into the reaction kettle, stir for 10 minutes at a speed of 800 r / min...

Embodiment 3

[0059] A preparation method of a composite heavy oil viscosity reducer, specifically comprising the steps of:

[0060] Step S1: Add acrylamide, sodium p-styrenesulfonate, 2-acrylamido-2-methylpropanesulfonic acid, and deionized water into the reaction kettle, and stir until the propylene Amide, sodium p-styrenesulfonate, and 2-acrylamido-2-methylpropanesulfonic acid are completely dissolved to obtain a mixed solution;

[0061] Step S2: Disperse the viscosity-reducing additive in ethanol, stir at a speed of 300r / min, add the mixed solution and azobisisobutyronitrile, and react for 10 hours at a temperature of 80°C , under the condition that the temperature is 120°C, carry out distillation to remove the distillate, and obtain the compound heavy oil viscosity reducer.

[0062] Described viscosity-reducing additive is made by following steps:

[0063] Step A1: Add concentrated sulfuric acid and deionized water into the reaction kettle, stir for 15 minutes at a speed of 800 r / min...

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

No PUM Login to view more

Abstract

The invention belongs to the field of petroleum development, and specifically discloses a preparation method of a composite heavy oil viscosity reducer, by condensing intermediate 8 and oxalic acid under the use of 1-hydroxybenzotriazole, and then compounding The carrier reacts to make the remaining carboxyl group of oxalic acid dehydrate and condense with the active hydroxyl group on the composite carrier to obtain a viscosity-reducing additive. The side chain of the additive contains a large number of long-chain alkyl groups, and the long-chain alkyl groups are non-polar The neutral segment can reduce the hydrogen bond strength between the colloid and asphaltene molecules in heavy oil, making the external environment of the asphaltene aggregate change to non-polar, so that the colloid and asphaltene cannot be aggregated, and the side chain contains benzene Rigid structures such as rings, and containing a large number of conjugated π bonds, make it easier for the heavy oil viscosity reducer to be included in the stacking structure of colloids and asphaltene, so that a small amount of heavy oil viscosity reducer can achieve good results.

Description

technical field [0001] The invention relates to the technical field of petroleum exploitation, in particular to a preparation method of a composite heavy oil viscosity reducer. Background technique [0002] Most of the world's oil resources are unconventional oil resources, which have the characteristics of high condensation and high viscosity. Most of the oil resources belong to the "three high" heavy oil with high freezing point, high viscosity and high wax content. While the reserves of conventional oil resources are gradually decreasing, the development and utilization of unconventional oil resources has become increasingly important. However, unconventional oil has brought great difficulties to the mining and transportation process due to its high freezing point and high viscosity. The content of asphaltene and wax in heavy oil is relatively high. This kind of heavy oil may lose fluidity and solidify due to the precipitation of wax and asphaltene at room temperature, c...

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): C08F220/56C08F212/14C08F220/58C09K8/524C09K8/58C09K8/588
CPCC08F220/56C09K8/524C09K8/58C09K8/588C08F212/30C08F220/585
Inventor 高超王志崔伟托君丽赵福军
Owner 山东奥士德石油技术有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap