Natural gas well shaft leakage three-dimensional leaking stoppage method and test device thereof

A test device and natural gas technology, which is applied in wellbore/well components, earthwork drilling, construction, etc., can solve the problems of lack of test devices, inability to visually see the plugging effect, and poor crack plugging agent effect, etc. Achieve the effect of simple construction operation, simple structure and strong high temperature resistance

Inactive Publication Date: 2020-01-10
南智(重庆)能源技术有限公司
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the wellbore of a natural gas well is exploiting natural gas, it usually encounters lost circulation, and most of the lost circulation is caused by fractures in the formation. Usually, it is only necessary to block the cracks when plugging, but the existing crack plugging agent effect Not very good, and the plugging effect cannot be seen intuitively, and there is also a lack of such a test device

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
  • Natural gas well shaft leakage three-dimensional leaking stoppage method and test device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0016] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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 provides a natural gas well shaft leakage three-dimensional leaking stoppage method and a test device thereof. According to the leaking stoppage method, PPS polymer gel, T&TS liquid, soft elastic and high-filtration water loss slurry leaking stoppage materials, ultra-low permeability micro-foam and other technical materials are developed and application, many shaft leakage technicalproblems can be solved, and the test device comprises a core clamping device. The front end of the core clamping device is connected with a constant flow / pressure pump through an intermediate container, the rear end of the core clamping device is connected with a gas bottle sequentially through a flowmeter and a back-pressure valve, the intermediate container and the core clamping device are arranged in a heating system, the core clamping device is connected with a confining pressure system, the front end of the core clamping device is provided with a first pressure sensor, the rear end of thecore clamping device is provided with a second pressure sensor, the first pressure sensor and the second pressure sensor are connected with a data collection system, and the front end and the rear end of the core clamping device are connected through a bypass pipeline with a first manual valve. The leaking stoppage effect of NZ slurry can be intuitively watched and verified.

Description

technical field [0001] The invention specifically relates to a three-dimensional plugging method and a test device for wellbore leakage of natural gas wells. Background technique [0002] When the wellbore of a natural gas well is exploiting natural gas, it usually encounters lost circulation, and most of the lost circulation is caused by fractures in the formation. Usually, it is only necessary to block the cracks when plugging, but the existing crack plugging agent effect Not very good, and the plugging effect cannot be seen intuitively, and there is also a lack of such a test device. Contents of the invention [0003] In order to solve the above problems, the present invention provides a three-dimensional lost circulation plugging method and a test device for the wellbore of a natural gas well. [0004] It adopts technical scheme as follows: [0005] A three-dimensional plugging method for wellbore lost circulation of natural gas wells, when the lost circulation veloc...

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): E21B33/13E21B47/005
CPCE21B33/13
Inventor 黄有为
Owner 南智(重庆)能源技术有限公司
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