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9th Biennial International Conference and Exposition on Petroleum Geophysics on 16-18 February, 2012

Evaluation of Coalbed Methane potential of the Eastern part of North Karanpura CBM Block, Jharkhand, India

Published in GEOHORIZONS - 2012

G.C.Datta*, T.K.Ghosh and J.K.Basumatary, ONGC

Abstract


Selected Barakar coal samples collected from coreholes/wells of eastern part of North Karanpura CBM Block were analysed for integrated laboratory studies to find out coalbed methane prospectivity of the area. Five Barakar coal seams occur regionally with thickness in the range 1-22m with cumulative thickness up to 70m. The coals have low to moderate moisture and ash content. Volatile matter decreases with increasing depth, but there is no relationship between ash content and depth. The vitrinite reflectance (VRo) found in the range of 0.65-1.22% indicates high-volatile-C- bituminous to mediumvolatile-bituminous rank coals.

Keywords


Gondwana, coalbed methane, gas content, volatile matter, maceral, vitrnite, adsorption isotherm, carbon isotope, dry, ash-free (daf)

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