A method for calculating the maximum value of coalbed methane adsorption based on coal rank and temperature-pressure gradient ratio
A maximum value, coal-bed gas technology, applied in the direction of calculation, instruments, measuring devices, etc., can solve problems such as not easy to use, and achieve the effect of simplicity, convenience and accuracy
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment approach 1
[0044] During exploration and development, the maximum reflectance R0,max of coal vitrinite is 0.84, the geothermal gradient is 2.98℃ / hm, and the pressure gradient is 1.20MPa / hm.
[0045] The method comprises the steps of:
[0046] Calculate the temperature-pressure gradient ratio according to the geothermal gradient and pressure gradient of the coal sample
[0047] According to the maximum reflectance of vitrinite and the temperature-pressure gradient ratio of the coal sample, the critical buried depth Hc=-600 meters is calculated according to the calculation formula of the critical buried depth Hc mentioned above.
[0048] According to the maximum reflectance of vitrinite and the temperature-pressure gradient ratio of the coal sample, the critical pressure Pc=6.75 MPa is calculated according to the above formula for calculating the critical pressure Pc.
[0049] According to the maximum reflectance of vitrinite and the temperature-pressure gradient ratio of the coal sampl...
Embodiment approach 2
[0051] The vitrinite maximum reflectance R of coal obtained during exploration and development 0,max =1.58, the geothermal gradient is 2.5°C / hm, and the pressure gradient is 1.0MPa / hm.
[0052] The method comprises the steps of:
[0053] Calculate the temperature-pressure gradient ratio according to the geothermal gradient and pressure gradient of the coal sample
[0054] According to the maximum reflectance of vitrinite and the temperature-pressure gradient ratio of the coal sample, the critical buried depth Hc=-880 meters is calculated according to the calculation formula of the critical buried depth Hc mentioned above.
[0055] According to the maximum reflectance of vitrinite and the temperature-pressure gradient ratio of the coal sample, the critical pressure Pc=9.74 MPa is calculated according to the above formula for calculating the critical pressure Pc.
[0056] According to the maximum reflectance of vitrinite and temperature-pressure gradient ratio of the coal sa...
Embodiment approach 3
[0058] The vitrinite maximum reflectance R of coal obtained during exploration and development 0,max =2.3, the geothermal gradient is 2.5°C / hm, and the pressure gradient is 1.0MPa / hm.
[0059] The method comprises the steps of:
[0060] Calculate the temperature-pressure gradient ratio according to the geothermal gradient and pressure gradient of the coal sample
[0061] According to the maximum reflectance of vitrinite and the temperature-pressure gradient ratio of the coal sample, the critical buried depth Hc=-924 meters is calculated according to the above formula for calculating the critical buried depth Hc.
[0062] According to the maximum reflectance of vitrinite and the temperature-pressure gradient ratio of the coal sample, the critical pressure Pc=10.4 MPa is calculated according to the above critical pressure calculation formula.
[0063] According to the maximum reflectance of vitrinite and the temperature-pressure gradient ratio of the coal sample, the critica...
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