A kind of drilling fluid sealing method for coal mine gas pumping
A technology of fluid sealing and coal mine gas, which is applied in the direction of mining fluid, gas discharge, sealing/isolation, etc., and can solve problems such as inability to effectively seal pores and fissures, loss of close contact with coal walls, and fissures
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment Construction
[0015] The present invention is further described below.
[0016] A coal mine gas pumping method adopts a drilling fluid sealing method, comprising the following steps:
[0017] (1) Install a water injection pipe in the extraction pipe, open a hole in the pipe wall of the extraction pipe and install a branch pipe connected with the water injection pipe, the branch pipe is sealed with the pipe wall of the water injection pipe and the extraction pipe, and a one-way valve is installed at the end of the branch pipe, The opening pressure of the check valve is 0.3MPa;
[0018] (2) Install two plugs on the surface of the extraction pipe, and the two plugs are respectively installed on both sides of the branch pipe. The plugs are hole sealers for drilling, or fillers such as polyurethane and cement mortar; There are pressure gauges and ball valves; any one or more of the ball valves, water injection pipes, and branch pipes are filled with sealing fluid, and the sealing fluid includes...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
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