Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Efficient heavy oil viscosity reducing agent and preparation method thereof

A heavy oil viscosity reducer and heavy oil technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve problems such as difficult mining and increased viscosity, and achieve reduced viscosity of heavy oil, good viscosity reduction, The effect of good interface engagement

Active Publication Date: 2019-01-11
INST OF CHEM CHINESE ACAD OF SCI
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Colloids and asphaltenes in heavy oil have surface activity, and when mixed with formation water, it is easy to form a water-in-oil mixed system due to emulsification, resulting in increased viscosity and difficult production

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
  • Efficient heavy oil viscosity reducing agent and preparation method thereof
  • Efficient heavy oil viscosity reducing agent and preparation method thereof
  • Efficient heavy oil viscosity reducing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] Active ingredient I humic acid condensation polymer (HA) in the present invention n , its specific preparation method includes: humic acid, triphenylphosphorus (PPh 3 ) and diethyl azodicarboxylate (DEAD) were added to the water separator containing a certain amount of toluene, refluxed to separate the water, slowly dripped concentrated sulfuric acid through the constant pressure dropping funnel, stirred at 60°C for 1 hour and then heated to 180±5°C, stop after 3 hours of reaction. Filtration, washing with water, separation, and recrystallization to obtain the condensed polymer (HA) n , the degree of condensation is 1 to 100.

[0024] The specific preparation method of the active ingredient II N-dialkyl-N', N"-dialkyl-dimethylpyridinium ammonium salt (DDBA) of the present invention comprises:

[0025] (1) Dimethylpyridinium and alkyl iodide (R 1 -I; where R 1 for -(CH 2 ) x -CH 3 ; Among them, x is 0-15; R 2 for -(CH 2 ) y -CH 3 ; Among them, y is 0-15; when...

Embodiment 1

[0026] Embodiment 1: Preparation of novel composite heavy oil viscosity reducer A

[0027] 22.21g of humic acid, 3.8g of triphenylphosphine (PPh 3 ) and 4.183g of diethyl azodicarboxylate (DEAD) were added to a water separator containing 100ml of toluene, refluxed to separate the water, and slowly added concentrated sulfuric acid through a constant pressure dropping funnel, a total of 30ml, and stirred at 60°C for 1 hour Afterwards, the temperature was raised to 180±5°C, and the reaction was terminated after 3 hours. Filter, wash with water, separate, and recrystallize to obtain (HA) with a degree of condensation of 25 n .

[0028] 30g active ingredient I condensation polymer (HA) of humic acid n (n=25), 70g N-dialkyl-N', N"-dialkyl-dimethylpyridinium ammonium salt (DDBA) (x=15, y=15) and 100g ethanol are mixed uniformly to obtain a High-efficiency heavy oil viscosity reducer, marked as A, where (HA) n The mass ratio to DDBA is 3:7, (HA) n The mass ratio of the total mas...

Embodiment 2

[0029] Embodiment 2: the preparation of novel composite heavy oil viscosity reducer B

[0030] 22.21g of humic acid, 3.8g of triphenylphosphine (PPh 3 ) and 4.183g of diethyl azodicarboxylate (DEAD) were added to a water separator containing 100ml of toluene, refluxed to separate the water, and slowly added concentrated sulfuric acid through a constant pressure dropping funnel, a total of 30ml, and stirred at 60°C for 1 hour Afterwards, the temperature was raised to 180±5°C, and the reaction was terminated after 3 hours. Filter, wash with water, separate, and recrystallize to obtain (HA) with a degree of condensation of 25 n .

[0031] 40g active ingredient I condensation polymer (HA) of humic acid n (n=25), 60g N-dialkyl-N', N"-dialkyl-dimethylpyridinium ammonium salt (DDBA) (x=15, y=15) and 100g ethanol are mixed uniformly to obtain a High-efficiency heavy oil viscosity reducer, marked as A, where (HA) n The mass ratio with DDBA is 4:6, (HA) n The mass ratio of the tot...

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
Viscosityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a heavy oil viscosity reducing agent and a preparation method thereof, wherein the effective components of the heavy oil viscosity reducing agent comprise a humic acid polycondensate represented by a formula b and a N-dialkyl-N',N"-dialkyl-pyridine ammonium salt (DDBA) represented by a formula c. According to the present invention, the efficient heavy oil viscosity reducingagent has good interfacial participation ability and good viscosity-reducing effect; and the heavy oil viscosity reducing agent enters the colloid substance and the asphaltene sheet-like molecules through the strong penetration and dispersion effect, and the partially split planes are stacked and overlapped to form the aggregate, wherein the colloid substance, the asphaltene sheet-like moleculesand the viscosity reducing agent molecules co-form the irregularly stacked and loosely-structured aggregate so as to reduce the viscosity of heavy oil. The formulas b and c are defined in the specification.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, and relates to a high-efficiency heavy oil viscosity reducer and a preparation method thereof. Background technique [0002] With the decline of easily exploitable oil reserves, the exploitation of heavy oil has become the focus of many scholars. Studies have shown that all continents except Antarctica are rich in heavy oil, and the proven reserves of heavy oil resources in the world currently exceed 3×1011 tons. It is a common task faced by the world's petroleum industry to extract heavy oil and super heavy oil to the maximum extent. Heavy oil is rich in complex mixture of asphaltenes and colloids, and its main characteristics are high viscosity, small oil-water density difference, and poor fluidity. Colloids and asphaltenes in heavy oil have surface activity, and when mixed with formation water, it is easy to form a water-in-oil mixed system due to emulsification, resulting in increased ...

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
IPC IPC(8): C09K8/584C09K8/588
CPCC09K8/584C09K8/588
Inventor 吴亚芊史学峰王金本刘芳慧黄诗哲张明辉王琳樊明红徐晓慧杨惠
Owner INST OF CHEM CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com