Coal Bed Methane Analysis

The methane gas in a coal seam is a potential source of additional revenue for a mining operation if it can be recovered economically. At SGS, we have the technical and laboratory capabilities to define the quantity of coal bed methane (CBM) in coal seams.

SGS Coal Bed Methane services include:

• Field collection of core
• Analysis of the coal
• Measurement of desorbed gas volume, residual gas volume and estimation of the lost gas volume from core samples
• Determination of total gas in situ content or total gas volume desorbed per unit weight of coal
• Collection of CBM gas samples and gas quality monitoring at producing wells
• Water and noise sampling as required by CBM permits at producing wells

SGS uses the direct method for estimating the gas in situ content and quantifying the gas content of a coal seam. In the field, we monitor and record the elapsed time between when the core is cut by the drill and when it is sealed into the collection container. The samples are constantly maintained at the site ground temperature during transportation and sample preparation. We then proceed with gas analysis of the core samples.

The quantity of gas is then measured, and finally, the coal sample is crushed and the residue gas is recovered and measured. The gas composition is then determined by gas chromatography.

SGS analysis of reformed gas and gas in situ determination in a coal bed provides a clear picture of the composition and full potential of a coal seam. Contact us to learn more about these tests.

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  Coal Bed Methane

  published 02/29/12

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  Coal Contacts

  published 02/07/13

  PDF