Test method for desorbing volume of loss gas in shale gas well and device thereof

A technology for shale gas wells and testing methods, which is applied to the analysis of materials and instruments, can solve the problems of gas loss in shale gas content testing, and achieve the effects of direct testing methods, reduced testing costs, and avoided testing procedures

Pending Publication Date: 2017-08-04
上海瑞达峰致能源科技股份有限公司
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a test method and device for the loss of gas desorption and absorption in shale gas wells. The method solves the problem of gas loss in shale gas content testing. The test method is direct, simple and reliable, and the test cost is low.

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
  • Test method for desorbing volume of loss gas in shale gas well and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] Below, in conjunction with the accompanying drawings and preferred embodiments, the specific implementation, features and efficacy of a method for testing the amount of lost gas desorption in shale gas wells proposed by the present invention and its device, as well as its efficacy, are described in detail below.

[0016] see figure 1 , a method for testing the amount of desorbed gas (gas loss) in shale gas wells. When drilling and taking cores, after the coring bit 11 cuts shale, the core and mud gradually enter the coring barrel. After the core loading is completed, all the core enters When taking out the core barrel, the micro switch 17 sensor in the barrel is triggered by taking the core and throwing the ball 2. Under the instruction of the control unit 4, the high-pressure micro-constant flow pump 6 is built in the coring barrel to continuously suck the liquid in the test chamber 14, and pass The liquid discharge line 13 is pumped into the rubber cylinder 10 at the ...

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 discloses a method and a device for testing the amount of degassed gas lost in a shale gas well, comprising a coring barrel and a coring drill bit (11), and the coring barrel has an outer wall (1) of the coring barrel and an inner wall (5) of the coring barrel ), a rubber cylinder (10), a partition (12), a liquid level sensor (9), a high-pressure micro-constant flow pump (6), and a control unit are sequentially installed in the inner wall (5) of the upper part of the coring drill bit (11) (4), battery (3), coring and pitching (2), high-pressure micro-constant flow pump (6) is installed in the inner wall (5) of the coring cylinder by a support (7), and the support (7) is provided with a pressure sensor ( 16), the high-pressure micro-constant-flow pump (6) is connected with the electromagnetic valve (15) through the liquid discharge pipeline (13), and the other end of the high-pressure micro-constant-current pump (6) is provided with a suction port (8), and the rock core barrel dividing plate (12 ) and the inner wall (5) of the coring barrel to form a test cavity (14); one side of the coring and throwing ball (2) is provided with a micro switch (17). The invention solves the problem of gas loss in shale gas content testing, and the testing method is direct, simple and reliable, and the testing cost is low.

Description

technical field [0001] The invention belongs to the technical field of unconventional oil and gas exploitation, and in particular relates to a method and a device for testing the amount of desorbed gas lost in a shale gas well. Background technique [0002] In the past two decades, the development of shale gas in the United States has achieved great success, which has completed the energy revolution and changed the world's energy pattern. [0003] The total amount of shale gas resources in China is 134 trillion cubic meters, ranking first in the world. With the exploration and development of Sinopec in Jiaoshiba, Fuling, Chongqing and CNPC in Longmaxi Formation shale gas exploration and development in Changning and Weiyuan, Sichuan, the development and utilization of shale gas in my country ranks second in the world. [0004] As we all know, shale gas is mainly adsorbed gas on the surface of shale matrix, supplemented by free gas, so shale gas content data is an important i...

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): G01N7/14
CPCG01N7/14
Inventor 龚大建翟刚毅张金川张栋
Owner 上海瑞达峰致能源科技股份有限公司
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