A Methodology to Estimate Proximate and Gas Content Saturation with Lithological Classification in Coalbed Methane Reservoir, Bokaro Field, India
Tóm tắt
Well log analysis and production testing in coal are the initial requirements to judge the prospectivity of a coalbed methane (CBM) reservoir. The process of prospect identification through laboratory studies is accurate although it is time-consuming and expensive. Therefore, we developed a methodology to identify prospective coal seam by establishing multiple regression models of geophysical well log parameters vs. organic/inorganic contents from laboratory-tested core samples for one seam. The Langmuir’s equation and methane adsorption isotherm were used to estimation of gas and saturation content by developing a regression model from organic content. Gas and coal contents (ash, moisture, fixed carbon, and volatile matter) were obtained from the subsequent propagation of the established equations to other wells. Gas saturation increased with depth from 60 to 69%. Mapped seam thickness and gas content were in the ranges of 10.0–54.0 m and 6.1–28.2 cc/g, respectively. Overlaying of seam thickness and gas content identified the sweet spots in releasing potential future well locations. Errors within the permissible limit between the predicted and observed values indicate the gas estimation to be reliable. Another application for electro-facies classification was demonstrated by applying multi-resolution graph-based clustering architecture to capture texture parameters from histogram and auto-covariance function in resistivity image log. Determination of lithology by correlation of resistivity image and geophysical well log corroborated with the depositional environment having fining upward formational sequence. Thus, this study helps in estimating proximate components, gas content, and saturation with depth in coal seam for production optimization to better understand its implications on the dewatering and gas production periods in the Bokaro CBM reservoir situated in India.
Tài liệu tham khảo
ASTM D7569-10. (2010). Determination of gas content of coal: Direct desorption method, ASTM International, West Conshohocken, PA. Retrieved 2010 from https://doi.org/www.astm.org.
Bhanja, A. K., & Srivastava, O. P. (2008). A new approach to estimate CBM gas content from well logs. In SPE asia pacific oil and gas conference and exhibition, 20–22 October, 2008, Perth, Australia. SPE115563 (pp. 1–5).
Bond, L. O., Alger, R. P., & Schmidt, A. W. (1971). Well log application in coal mining and rock mechanics. Soil Mechanics and Foundation Engineering, 250, 355–362.
Busch, A., Gensterblum, Y., Krooss, B. M., & Littke, R. (2004). Methane and carbon dioxide adsorption/diffusion experiments on coal: An upscaling- and modeling approach. International Journal of Coal Geology, 60, 151–168.
Busch, A., Gensterblum, Y., Krooss, B. M., & Siemons, N. (2006). Investigation of high-pressure selective sorption/desorption behavior of CO2 and CH4 on coals: An experimental study. International Journal of Coal Geology, 66, 53–68.
Bustin, R. M., & Clarkson, C. R. (1998). Geological controls on coalbed methane reservoir capacity and gas content. International Journal of Coal Geology, 38, 3–26.
Casshyap, S. M., & Tewari, R. C. (1984) Fluvial models of the Lower Permian Gondwana coal measures of Son-Mahanadi and Koel-Damodar basins. In: Rahmani, R. A., Flores, R. M., (Eds.), Sedimentology of coal and coal bearing strata. Special Publications of the International Association of Sedimentologists, (Vol. 7, pp. 121–147).
Chalmers, G. R. L., & Bustin, R. M. (2007). On the effect of pertographic composition on coalbed methane sorption. International Journal of Coal Geology, 69, 288–304.
Chatterjee, R., & Pal, P. K. (2010). Estimation of stress magnitude and physical properties for coal seam of Rangamati area, Raniganj coalfield, India. International Journal of Coal Geology, 81, 25–36.
CMPDIL (1993). Coal Atlas of India, Ranchi: Central Mine Planning and Design Institute Ltd., 1st ed. (pp. 88–89).
Cordero, T., Marquez, F., Rodriquez-Mirasol, J., & Rodriguez, J. J. (2001). Predicting heating values of lignocellulosic and carbonaceous materials from proximate analysis. Fuel, 80, 1567–1571.
Crosdale, P. J., Beamish, B. B., & Valix, M. (1998). Coalbed methane sorption related to coal composition. International Journal of Coal Geology, 35, 147–158.
Crosdale, P. J., Moore, T. A., & Mares, T. E. (2008). Influence of moisture content and temperature on methane adsorption isotherm analysis for coals from a low-rank, biogenically-sourced gas reservoir. International Journal of Coal Geology, 76, 166–174.
Czerw, K., Baran, P., Szczurowski, J., et al. (2020). Sorption and desorption of CO2 and CH4 in vitrinite- and inertinite-rich Polish low-rank coal. Natural Resource Research. https://doi.org/10.1007/s11053-020-09715-2.
Diamond, W. P., & Levine, J. R. (1981). Direct method determination of the gas content of coal: Procedures and results (p. 36). U.S: Bureau of Mines, Washington, D.C.
Diamond, W. P., & Schatzel, S. J. (1998). Measuring the gas content of coal: A review. International Journal of Coal Geology, 35, 311–331.
Faiz, M., Saghafi, A., Sherwood, N., & Wang, I. (2007). The influence of petrological properties and burial history on coal seam methane reservoir characterization, Sydney basin, Australia. International Journal of Coal Geology, 70, 193–208.
Faiz, M., Stalker, L., Sherwood, N., Saghafi, A., Wold, M., Barclay, S., et al. (2003). Bio-enhancement of coal bed methane resources in the southern Sydney Basin. APPEA, 43, 595–610.
Flores, R. M. (2008). Microbes, methanogenesis, and microbial gas in coal. International Journal of Coal Geology, 76, 1–185.
Geological Survey of India. (2015). 38th OCG course material on geological mapping in gondwanas and coal exploration, 2014–2015. Chapter 1 (pp. 20–24).
Ghosh, S., Chatterjee, R., & Shanker, P. (2016). Estimation of ash, moisture content and detection of coal lithofacies from well logs using regression and artificial neural network modelling. Fuel, 177, 279–287.
Given, P. H., Weldon, D., & Zoeller, J. H. (1986). Calculation of calorific values of coals from ultimate analyses: Theoretical basis and geochemical implications. Fuel, 65, 849–854.
Gunter, G.W., Finneran, J.M., Hartmann, D.J., & Miller, J.D. (1997). Early determination of reservoir flow units using an integrated petrophysical method. SPE Annual Technical Conference and Exhibition, San Antonio, Texas, October 1997. https://doi.org/10.2118/38679-MS.
Haimson, B. C., & Cornet, F. H. (2003). ISRM suggested methods for rock stress estimation-part 3: Hydraulic fracturing (HF) and/or hydraulic testing of pre-existing fractures (HTPF). International Journal Rock Mechanics and Mining Science, 40, 1011–1020.
Harpalani, S., Prusty, B. K., & Dutta, P. (2006). Methane/CO2 sorption modeling for coalbed methane production and CO2 Sequestration. Energy & Fuels, 20, 1591–1599.
Hawkins, J. M., Schraufnagel, R. A., & Olszewsk, A. J. (1992). Estimating coalbed gas content and sorption isotherm using swell log data. In SPE annual technical conference and exhibition, (4–7 October, 1992, Washington, DC) SPE24905 (pp. 491–501).
Hildenbrand, A., Krooss, B. M., Busch, A., & Gaschnitz, R. (2006). Evolution of methane sorption capacity of coal seams as a function of burial history—A case study from the Campine basin, NE Belgium. International Journal of Coal Geology, 66, 179–203.
Hota, R. N., & Maejima, W. (2004). Comparative study of cyclicity of lithofacies in Lower Gondwana Formations of Talchir basin, Orissa, India. Journal of the Indian Association of Sedimentologist, 24, 15–26.
Hou, J., Zou, C., Huang, Z., Xiao, L., Yang, Y., Zhang, G., et al. (2014). Log evaluation of a coalbed methane (CBM) reservoir: A case study in the southern Qinshui basin, China. Journal of Geophysics and Engineering, 11, 1–13.
Jenkins, C. D., & Boyer, C. M. (2008). Coalbed-and shale-gas reservoirs. Journal of Petroleum Technology, 60, 92–99.
Kim, A. G. (1977). Estimating methane content of bituminous coalbeds from adsorption data. report of investigation 8245, U.S. Bureau of Mines, Washington DC (p. 22).
Kim, A. G., & Douglas, L. J. (1973). Gases desorbed from five coals of low gas content. U.S. Bureau of Mines, Washington DC, Report of Investigations 7768 (p. 9).
Krooss, B. M., van Bergen, F., Gensterblum, Y., Siemons, N., Pagnier, H. J. M., & David, P. (2002). High-pressure methane and carbon dioxide adsorption on dry and moisture-equilibrated Pennsylvanian coals. International Journal of Coal Geology, 51, 69–92.
Langmuir, I. (1918). The adsorption of gases on plane surfaces of glass, mica and platinum. Journal of the American Chemical Society, 40, 1361–1403.
Levine, J. R. (1993). Coalification: The evolution of coal as source rock and reservoir rock for oil and gas. In Law, B. E. and Rice, D. D. (Eds.), Hydrocarbons from coal (pp. 39–77). American Association of Petroleum Geologists, Studies in Geology Series 38, Tulsa.
Lv, Y., Tang, D., Xu, H., & Tao, S. (2011). Productivity matching and quantitative prediction of coalbed methane wells based on BP neural network. Science China Technological Sciences, 54, 1281–1286.
Lyons, B., & Wisman, P. S. (2004). Coal bed methane plays and prospect evaluation using GeoGraphix software. ASEG Extended Abstracts, 1, 1–5. https://doi.org/10.1071/ASEG2004ab096.
Majumder, A. K., Jain, R., Banerjee, J. P., & Barnwal, J. P. (2008). Development of a new proximate analysis based correlation to predict calorific value of coal. Fuel, 87, 3077–3081.
Mares, T. E., & Moore, T. A. (2008). The influence of macroscopic texture on biogenically-derived coalbed methane, Huntly coalfield, New Zealand. International Journal of Coal Geology, 76, 175–185.
Markowski, A. K. (1998). Coalbed methane resource potential and current prospects in Pennsylvania, in P.C. Lyons, ed., Special issue: Appalachian coalbed methane. International Journal of Coal Geology, 38, 137–159.
Mason, D. M., & Gandhi, K. N. (1983). Formulas for calculating the calorific value of coal and coal chars: Development, tests, and uses. Fuel Processing Technology, 7(1), 11–22.
McCulloch, C. M., Levine, J. R., Kissell, F. N., & Deul, M. (1975). Measuring the methane content of bituminous coalbeds. US Bureau of Mines, Washington D.C., Report of Investigations 8043 (p. 22).
Moore, T. A., & Butland, C. I. (2005). Coal seam gas in New Zealand as a model for Indonesia. In S. Prihatmoko, S. Digdowirogo, C. Nas, T. V. Leeuwen, & H. Widjajanto (Eds.), Indonesian Mineral and Coal Discoveries (pp. 192–200). Bogor: Indonesian Association of Geologists.
Moore, T., & Zarrouk, S. J. (2011). The origin and significance of gas saturation in coalbed methane plays: Implications for Indonesia. In Proceedings, Indonesian petroleum association, thirty-fifth annual convention & exhibition, IPA11-G-195. https://doi.org/10.29118/ipa.1079.11.g.195.
Murthy, S., Mahesh, S., & Roy, J. S. (2016). Palyno-petrographical facet and depositional account of gondwana sediments from East bokaro coalfield. Journal of Geological Society of India, 88, 549–558.
Paradigm Customer Story. (2019). Electrofacies Modeling: Using multi resolution graph-based clustering (MRGC) analysis in a carbonate field in Venezuela. https://www.pdgm.com/resource-library/customer-stories/electrofacies-modeling-using-multi-resolution-gra/.
Paul, S., Ali, M., & Chatterjee, R. (2018). Prediction of compressional wave velocity using regression and neural network modeling and estimation of stress orientation in Bokaro Coalfield, India. Pure and Applied Geophysics, 175, 375–388. https://doi.org/10.1007/s00024-017-1672-1.
Raja Rao, C. S. (1987). Coalfields of India: Coal resources of Bihar (excluding Dhanbad district). Bulletin of Geological Survey of India, 4, 1–336.
Sang, S., Liu, H., Li, Y., Li, M., & Li, L. (2009). Geological controls over coal-bed methane well production in southern Qinshui basin. Procedia Earth and Planetary Science, 1, 917–922.
Sen, S., & Dey, J. (2020). Cyclic sedimentation in the Barakar Formation of the Karanpura Feld, Marginal Gondwana Basin, India. Journal of Geological society of India, 95, 293–300.
Singh, M. P., & Singh, G. P. (1996). Petrographic characteristics and evolution of the Permian coal deposits of the Rajmahal basin, Bihar, India. International Journal of Coal Geology, 29, 93–118.
Speight, J. G. (2005). Handbook of coal analysis. New Jersey: Wiley.
Stach, E., Mackowsky, M.-T., Teichmuller, M., Taylor, G. H., Chandra, D., & Teichmuller, R. (1982). (Eds.) Coal petrology, gebruder borntraeger. Berlin, Stuttgart, 535 pp.
Sun, Z., Li, X., Shi, J., Yu, P., Huang, L., Xia, J., et al. (2017). A semi-analytical model for drainage and desorption area expansion during coal-bed methane production. Fuel, 204, 214–226.
Tewari, R. C. (1997). Numerical classification of coal bearing cycles of early Permian Barakar coal measures of eastern-central India Gondwana Basin using Q-mode cluster analysis. Journal of Geological society of India, 50, 593–599.
Tian, Y., Xu, H., Zhang, X., et al. (2016). Multi-resolution graph-based clustering analysis for lithofacies identification from well log data: Case study of intraplatform bank gas fields, Amu Darya Basin. Applied Geophysics, 13, 598–607.
Varma, A. K., Hazra, B., Samad, S. K., Panda, S., & Mendhe, V. A. (2014). Methane sorption dynamics and hydrocarbon generation of shale samples from West Bokaro and Raniganj basins, India. Journal of Natural Gas Science and Engineering, 21, 1138–1147.
Wang, Y. (2012). Reservoir characterization based on seismic spectral variations. Geophysics, 77, 89–95.
www.welldog.com/industry-solutions/coal-seam-gas.
Yee, D., Seidle, J. P., & Hanson, W. B. (1993). Gas sorption on coal and measurement of gas content. In Law, B.E., and Rice, D.D. (Eds.), Hydrocarbons from coal, (pp. 203–218). American Association of Petroleum Geologists, Studies in Geology 38, Tulsa, Oklahoma, Studies in Geology, Series 38.
Zarrouk, S. J., & Moore, T. (2009). Preliminary reservoir model of enhanced coalbed methane (ECBM) in a subbituminous coal seam, Huntly Coalfield, New Zealand. International Journal of Coal Geology, 77, 153–161.
Zhang, J., & Roegiers, J. C. (2010). Discussion on Integrating borehole-breakout dimensions, strength criteria, and leak-off test results, to constrain the state of stress across the Chelungpu Fault. Taiwan. Tectonophysics, 492, 295–298.
Zhu, Q. (2014). Coal sampling and analysis standards. London: IEA Clean Coal Centre.