Geophysical Log-based Coal Characterization of Middle Permian Barakar Formation from North Karanpura Coal Field, India
- 29 Downloads
North Karanpura coal field is the western most marginal coal bearing segment of east-west trending Damodar valley basin. It consists of middle Permian Barakar Formation with sandstone, siltstone, coal and shale being the dominant lithofacies, deposited in a fluvial meandering environment, giving rise to repetitive fining upwards cycles. Study of geophysical logs, the drilled core holes were used to identify lithofacies, correlate coal seams with splitmerge behavior; which has been used to understand lateral and vertical facies disposition. Geophysical logs have been employed to compute various coal assay parameters–ash, fixed carbon, moisture, volatile content, cleat porosity, vitrinite reflectance seam wise. Study of log based coal assay parameters, calibrated with lab based values depicts lateral coal quality variation, i.e. decreasing ash content, higher fixed carbon from east to west, which can be a great proxy for future development of field or mine planning.
Unable to display preview. Download preview PDF.
- Archie, G. E. (1942) The Electrical resistivity log as an aid in determining some reservoir characteristics. Trans. Amer. Inst. Min. Metall. Engineers, v.146, pp.54–62.Google Scholar
- Chatterjee, R., Pal, P.K., Nandi, U., Paul, S. (2010) Prediction of CBM Reservoir Parameters, Jharia Coal Field, India. 8th Biennial Internat. Conf. Exposition on Petroleum Geophys., SPG, p.108.Google Scholar
- Ghosh, S.C., Nandi, A., Ahmed, G., Roy, D.K. (1996) Study of Permo–Triassic boundary in Gondwana sequence of Raniganj Basin. Proc. IXth International Gondwana Symposium. Oxford and IBH Pub., New Delhi, Calcutta, pp.195–206.Google Scholar
- Mandal, D., Tewari, D.C., and Rautela, M.S. (2004) Analysis of Micro-fractures in Coal for Coal Bed Methane Exploitation in Jharia Coal Field. Presented in 5th Conference & Exposition on Petroleum Geophysics, SPG, Hyderabad, India, pp. 904–909.Google Scholar
- Mullen (1988) Log Evaluation in Wells Drilled for Coal-bed Methane, RMAG.Google Scholar
- Rice, D.D. (1993) Composition and origins of coal bed gas. In: Hydrocarbons from coal. Law, B.E. and Rice D.D. (Eds.), AAPG Studies in Geology, v.38 pp.159–184.Google Scholar
- Sen, S. and Banerjee, S. (2015) Identifying Relationship Amongst Vitrinite/Inertinite Ratio (V/I), Cleat Parameters, Vitrinite Reflectance, O/C Ratio and Permeability of Coal Seams and V/I Ratio as Exploration Tool: Study from Raniganj Coal Bed Methane Block, Essar Oil Limited, India, Petroleum Geosciences: Indian Contexts (Ed. S. Mukherjee), Springer Geology, pp.205–217.Google Scholar
- Schweinfurth, S.P. (2009) An Introduction to Coal Quality, Chapter C. The National Coal Resource Assessment Overview. USGS Prof. Paper 1625–F.Google Scholar
- Trumbull, James (1960) Coal fields of the United States, exclusive of Alaska—Sheet 1: Washington, D.C., U.S. Geological Survey Map, scale 1:5,000,000.Google Scholar
- Yang, Y., Peters, M., Cloud, T.A. and Van Kirk, C.W., 2006, Gas productivity related to cleat volumes derived from focused resistivity tools in Coalbed Methane (CBM) Fields; Petrophysics; v.47(3), pp.250–257.Google Scholar