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ISO 18871:2015

Current

Current

The latest, up-to-date edition.

Method of determining coalbed methane content

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English

Published date

29-09-2015

€144.00
Excluding VAT

ISO 18871:2015 provides methodology for measuring coalbed methane content of coal core samples obtained by coring or sidewall coring during well drilling. It shall be also applied to drill cuttings samples, if the equipment for the determination of the coalbed methane content according to a respective national standard is not available. The selection of the most appropriate method shall consider the purpose of the test and the possibilities of sampling.

ISO 18871:2015 is applicable for the direct method of measuring coalbed methane content. It includes sample preparation, experimental procedures and calculation methods. Indirect methods of measuring gas content of coal (not included in this standard) are generally based on either the gas sorption characteristics of coal under defined/specified pressure and temperature conditions.

ISO 18871:2015 includes three types of direct measuring methods: conventional desorption (slow desorption) of core samples, fast desorption of core samples, fast desorption of cuttings or lump samples. The difference among them lies in the time allowed for gas to desorb before final crushing and in sample size and shape.

ISO 18871:2015 is applicable for the determination of the methane content of coal during coal and coalbed methane exploration for the determination of free gas content of low rank coals is included.

DevelopmentNote
Supersedes ISO/DIS 18871. (09/2015)
DocumentType
Standard
Pages
29
PublisherName
International Organization for Standardization
Status
Current

Standards Relationship
BS ISO 18871:2015 Identical

ISO 11722:2013 Solid mineral fuels — Hard coal — Determination of moisture in the general analysis test sample by drying in nitrogen
ISO 18283:2006 Hard coal and coke Manual sampling
ISO 1171:2010 Solid mineral fuels — Determination of ash
ISO 562:2010 Hard coal and coke — Determination of volatile matter

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