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

Chemical oil displacement agent

A technology for chemical oil displacement and oil displacement agent, which is applied in the development of fluids, wellbore/well components, earth-moving drilling, etc., can solve the problems of destroying the integrity of the original formulation system, disappearing of ultra-low interfacial tension, and chromatographic separation, etc. Achieving excellent interfacial tension, overcoming the decline of oil displacement efficiency and improving oil recovery

Inactive Publication Date: 2005-11-16
BEIJING JIAOTONG UNIV
View PDF2 Cites 37 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in ASP flooding in oilfields, surfactants mostly use mixed components. Due to the difference in properties between components, there is a phenomenon of chromatographic separation in the oil layer, which will destroy the integrity of the original formula system, thus making the The formed ultra-low interfacial tension disappears, so that the oil displacement efficiency is reduced

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0015] Test instrument: TX-500C full-scale automatic dynamic spinning drop interfacial tensiometer;

[0016] Temperature: 70°C;

[0017] Oil: experimental standard crude oil;

[0018] Water: formation mineralized water (salt content 8000mg l -1 );

[0019] Inorganic nanopowder: SiO 2 ;

[0020] Oil displacement system: prepare 100ml active water, in which modified SiO 2 0.5g of powder, 0.5g of petroleum sulfonate, and the balance is mineralized water;

[0021] Interfacial tension: 3.8×10 -3 mN·m -1 .

Embodiment approach 2

[0023] Test instrument: TX-500C full-scale automatic dynamic spinning drop interfacial tensiometer;

[0024] Temperature: 70°C;

[0025] Oil: experimental standard crude oil;

[0026] Water: formation mineralized water (salt content 8000mg l -1 );

[0027] Inorganic nanopowder: S 1 o 2 ;

[0028] Oil displacement system: prepare 100ml active water, in which modified SiO 2 0.4g of powder, 0.6g of petroleum sulfonate, and the balance is mineralized water;

[0029] Interfacial tension: 3.2×10 -3 mN·m -1 .

Embodiment approach 3

[0031] Test instrument: TX-500C full-scale automatic dynamic spinning drop interfacial tensiometer;

[0032] Temperature: 70°C;

[0033] Oil: experimental standard crude oil;

[0034] Water: formation mineralized water (salt content 8000mg l -1 );

[0035] Inorganic nanopowder: TiO 2 ;

[0036] Oil displacement system: prepare 100ml active water, in which modified TiO 2 0.5g of powder, 0.5g of petroleum sulfonate, and the balance is mineralized water;

[0037] Interfacial tension: 2.6×10 -3 mN·m -1 .

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

A chemical oil-displacing agent without damage to stratum is proportionally prepared from the silane-type coupling agent modified nanoparticles of SiO2, Al2O3, TiO2, or their mixture and the petroleum sulfonate of Na, R, Ca, or ammonium.

Description

technical field [0001] The invention relates to a chemical oil displacement agent, which is suitable for tertiary oil recovery in the petroleum industry. Background technique [0002] Now in China's petroleum industry, many oilfields have experienced the original underground oil injection and water flooding, and the water content of the produced fluid has reached about 90%. According to internationally recognized standards, when the water content reaches 97%, it is unprofitable oil recovery, but At this time, only about 30% of the underground reserves can be recovered. In order to extract more than 70% of the crude oil underground, tertiary oil recovery is required. At present, the application of tertiary oil recovery technology has been widely valued. At the end of waterflood development, residual oil is distributed in the pores of reservoir rocks in a static spherical shape. Reducing interfacial tension is the only way to force the residual oil trapped in porous media to ...

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
Inventor 朱红闫学海
Owner BEIJING JIAOTONG UNIV
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