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

Salt-resistant oil-displacing agent for oil recovery

An oil-displacing agent and salt-tolerant technology, which is applied in chemical recovery, drilling compositions, chemical instruments and methods, etc., can solve the problem that the oil-displacing agent cannot be effectively and reliably exploited, the amount of use is large, and the oil-displacing agent cannot be degraded To achieve the effect of improving oil displacement efficiency and sweep coefficient, reducing raw material cost, and avoiding secondary pollution

Inactive Publication Date: 2017-06-30
程叶红
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Petroleum is an important energy resource in production and life. With the continuous exploitation of oil, most oil fields have entered a period of high water content, low permeability, heavy oil, high temperature, and high salinity. Most of the remaining oil reservoirs are distributed in extremely heterogeneous carbonate In places where mining is difficult such as fractured caves, it is impossible to use traditional oil displacement agents for effective and reliable mining.
Although some scholars have developed a series of new surfactants for oil extraction, there are still problems such as a large amount of use and the inability of the oil displacement agent to degrade.

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
  • Salt-resistant oil-displacing agent for oil recovery
  • Salt-resistant oil-displacing agent for oil recovery
  • Salt-resistant oil-displacing agent for oil recovery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Heat the tea saponin mother liquor extracted from tea dregs and trimethylolpropane to 90-95°C in a mixing reactor, react under the catalysis of cerium sulfate, recover the catalyst after the reaction is complete, and concentrate to obtain tea soap Plain modifier, wherein tea saponin and trimethylol propane carry out mixing reaction according to the molar ratio of 3.5:1.

Embodiment 2

[0032] Mix and react the tea saponin mother liquor and thionyl chloride in a mixing reactor at a reaction temperature of 20-25°C, wherein the tea saponin and thionyl chloride are mixed and reacted at a molar ratio of 1.1:1; After the end, add trimethylolpropane and carry out mixed reaction at 40-45°C. The amount of trimethylolpropane added is 1 / 3 of that of thionyl chloride. After the reaction is complete, concentrate to obtain the tea saponin modifier.

Embodiment 3

[0034] Heat the tea saponin mother liquor extracted from tea dregs and trimethylolpropane to 90-95°C in a mixing reactor, and react under the catalysis of activated carbon-supported p-toluenesulfonic acid catalyst, and recover the catalyst after the reaction is complete After concentration, the tea saponin modifier is obtained, wherein the tea saponin and trimethylolpropane are mixed and reacted according to the molar ratio of 3.5:1.

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

PropertyMeasurementUnit
interfacial tensionaaaaaaaaaa
interfacial tensionaaaaaaaaaa
interfacial tensionaaaaaaaaaa
Login to View More

Abstract

The invention relates to a salt-resistant oil-displacing agent for oil recovery. The salt-resistant oil-displacing agent is prepared from, by weight, 0.8 part of bacillus subtilis sodium lipopeptide, 5 parts of myristyl benzene sulfonic acid sodium salt, 7 parts of tea saponin modifier, 3.5 parts of n-butyl alcohol and 83 parts of water. When the concentration is small, the oil / water interfacial tension capacity of the salt-resistant oil-displacing agent can reach 10<-3> mN / m. Compared with common oil-displacing agents prepared from common heavy alkane sulfonate, betaine and dimeric surfactant, the use amount can be reduced by two times or above, and the oil displacing efficiency is improved by about 15%.

Description

[0001] The present invention is a divisional application for an invention patent with an application date of December 01, 2014, an application number of 201410718901.4, and an invention title of "Environmental-friendly salt-resistant and high-temperature oil-displacement agent containing biosurfactant for petrochemical industry". technical field [0002] The invention relates to the field of oil exploitation, in particular to an environment-friendly salt-resistant and high-temperature oil-displacement agent containing biosurfactant for petrochemical industry. Background technique [0003] Petroleum is an important energy resource in production and life. With the continuous exploitation of petroleum, most oil fields have entered a period of high water content, low permeability, heavy oil, high temperature, and high salinity. Most of the remaining oil reservoirs are distributed in extremely heterogeneous carbonate In places where mining is difficult such as fractured caves, eff...

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 Applications(China)
IPC IPC(8): C09K8/584
CPCY02P20/584C09K8/584
Inventor 程叶红
Owner 程叶红