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

Method and Application of Improving Water Wettability of Rock Surface Based on Plasma

A plasma and microwave plasma technology, applied in the field of rock modification, can solve problems such as changing the wettability of the rock surface, and achieve the effect of good effect, strong universality and environmental friendliness

Active Publication Date: 2022-01-18
CHINA UNIV OF PETROLEUM (EAST CHINA)
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, studies on changing the wettability of rock surfaces using plasma technology have not been reported

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
  • Method and Application of Improving Water Wettability of Rock Surface Based on Plasma
  • Method and Application of Improving Water Wettability of Rock Surface Based on Plasma
  • Method and Application of Improving Water Wettability of Rock Surface Based on Plasma

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Example 1 A Plasma-Based Method for Improving the Water Wettability of Rock Surfaces

[0045] Microwave plasma is used to directly treat the rock surface; among them, microwave plasma is generated based on pulse-modulated microwave excitation source, using microwave plasma treatment with a pulse frequency of 1000Hz, a duty cycle of 50%, a frequency of 2.45GHz, and a peak power of 100W , the distance between the plasma and the rock surface is 3mm, air with a flow rate of 10L / min is used as the working gas, and the processing time is 3min.

Embodiment 2

[0046] Example 2 A Plasma-Based Method for Improving the Water Wettability of Rock Surfaces

[0047] Microwave plasma is used to directly treat the rock surface; among them, microwave plasma is generated based on pulse-modulated microwave excitation source, using microwave plasma treatment with a pulse frequency of 800Hz, a duty cycle of 80%, a frequency of 2.45GHz, and a peak power of 150W. , the distance between the plasma and the rock surface is 3mm, air with a flow rate of 10L / min is used as the working gas, and the processing time is 5min.

Embodiment 3

[0048] Example 3 A Plasma-Based Method for Improving the Water Wettability of Rock Surfaces

[0049] Microwave plasma is used to directly treat the surface of rock; among them, microwave plasma is generated based on pulse-modulated microwave excitation source, using microwave plasma treatment with a pulse frequency of 500Hz, a duty cycle of 100%, a frequency of 2.45GHz, and a peak power of 200W , the distance between the plasma and the rock surface is 3mm, air with a flow rate of 10L / min is used as the working gas, and the processing time is 7min.

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
particle size (mesh)aaaaaaaaaa
Login to View More

Abstract

The invention proposes a method and application for improving the water wettability of a rock surface based on plasma, and particularly relates to the field of rock technology. This method uses plasma to directly treat the surface of the rock. The invention is mainly used in oil and gas exploitation and oil-bearing soil purification, and the rock is treated with microwave plasma to change the water contact angle of the rock surface to varying degrees, thereby changing the water wettability of the rock surface.

Description

technical field [0001] The invention relates to the technical field of rock modification, in particular to a method and application for improving the water wettability of rock surface based on plasma. Background technique [0002] Since the Industrial Revolution, with the advancement of the world's industrial system and the development of the world economy, oil resources have played an increasingly important role in the international market. Oil production and reserves represent a country's economic development level and development potential. At present, most major oilfields have entered a state of high water cut after repeated oil recovery, and the current situation forces human beings to continue to explore ways to enhance oil recovery. The wettability of the reservoir (such as the wettability of underground rocks), as one of the important parameters of the reservoir interface phenomenon, plays a decisive role in the recovery of crude oil. However, the wettability of und...

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): G01N23/04
CPCC04B41/0054
Inventor 于红刘建林符力耘宫礼坤霍震
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)