Biological plug removal method for coal seam
A coal seam and biological technology, which is applied in earth-moving drilling, cleaning equipment, and mining fluids, etc., can solve the problem of difficulty in maintaining the smooth passage of coalbed methane migration for a long time, and achieve increased coal permeability and passability. Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0027] Embodiment 1: The plugging removal method: using the individual advantages of microorganisms and the special metabolic effect on the coal body to digest the coal crack blocking particles, expand the crack channel, improve the air permeability of the coal body, and realize the unblocking and dredging of the coal seam crack;
[0028] First, carry out the induction and expansion of bacterial strains on the target coal seam: use nutrient-rich medium to induce the microbial population, accelerate the activity and reproduction speed of the coal matrix-degrading bacteria in the bacterial population, and increase the number of coal-matrix-degrading bacteria. reach 10 8 above;
[0029] Second, strengthen the supply of auxiliary nutrients to the blocked area: strengthen the supply of auxiliary nutrients other than the nutrients that the coal matrix can provide to the blocked area; use this method to promote the utilization rate and degradation rate of the coal matrix by microorga...
specific Embodiment approach
[0032] The specific implementation of the coal seam biological plugging removal technology is as follows:
[0033] First, induce the microbial structure of the target coal seam; inject nutrient-rich induction medium into the coal body, and monitor the microbial activity in the unblocked coal seam area. Firstly, monitor the variation of carbon dioxide in the gas extracted from the gas production well, and the stabilized carbon dioxide concentration should be kept at 5 to 10 times the original concentration; monitor the acetate concentration in the water sample of the extraction well, and the stabilized acetate content should be equal to the original 20 to 30 times the concentration.
[0034] The composition of the induction medium is as follows:
[0035]
[0036] Second, carry out the cultivation of coal matrix degrading bacteria; monitor the content of coal matrix degrading bacteria in the water samples of the drainage wells in the unblocking coal seam area, so that the nu...
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