GB 5751-1986
Replaced
NB/T 11822-2025
Active
Industry standards-Energy
NB/T 11822-2025 Evaluation methods coalbed methane volume—Bottomhole fluid pressure method
NB/T 11822-2025 Evaluation methods coalbed methane volume—Bottomhole fluid pressure method
Price:
$ 24.00
Basic Information
Standard Code:
NB/T 11822-2025
Standard Type:
Industry standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Solid fuel mine
ICS Name:
\nCoal
Publish Date:
2025-06-30
Implement Date:
2025-12-30
Pages:
8 pages
Scope
This document specifies the method for estimating the bottom flow pressure of coal seams in extraction wells containing gas.
This document is applicable to coal seam gas wells in under-saturated coal reservoirs.
Development Information
Referenced Standards
GB/T 19560-2004 Experimental method of high-pressure adsorption isothermal to coal—Capacity method
GB/T 19560-2008 Experimental method of high-pressure isothermal adsorption to coal
GB/T 31537-2015 Terms relating to coalbed methane(coal mine gas)
DZ/T 0216-2020
NB/T 10009-2014 Coalbed methane well production technology specifications
Related Standards
GB 481-1993
abolished_transferred
GB 481-1993 Sampling method of coal sample for production
GB/T 15223-1994
Replaced
GB/T 15223-1994 Plastics—Liquid resins—Determination of density by the pyknometer method
GB/T 15224.1-1994
Replaced
GB/T 15224.1-1994 Classification for quality of coal—Classification for ash yield of coal
GB/T 15224.2-1994
Replaced
GB/T 15224.2-1994 Classification for quality of coal—Classification for sulphur content of coal
GB/T 15224.3-1994
Replaced