The fluid flow modeling procedure including a critically stressed fracture analysis of coalbed methane reservoir: a case study of Upper Silesian Coal Basin, Poland
DOI:
https://doi.org/10.7494/geol.2023.49.1.53Keywords:
coal bed methane, critically stressed fractures, fractures, fracturing treatment, Upper Silesian Coal BasinAbstract
The geomechanical modeling turned out to be an essential component of the hydrocarbon exploration assisting reduction of risk of drilling issues and optimization of hydraulic fracturing treatment. This study provides a workflow of critically stressed fracture (CSF) analysis dedicated for coal layers. The main focus of the paper is applying the 1D mechanical models and following modelling of hydraulic fracturing treatment to describe the fracture behavior under the impact of the stresses at the wellbore scale. Another objective of the presented study is demonstration of benefits of 1D and 3D CSF analysis to understand fracture contribution to gained volume of hydrocarbon after fracturing of coal seam. Interpretation of fracture orientation and their behavior is vital to effective development of coal bed methane (CBM) resources as the CSF can be responsible for considerable part of CBM production. Natural fractures and faults contribute to fluid flow through rock. It is often noted that natural fractures may not be critically stressed at ambient stress state. However, during stimulation, the optimally oriented natural fracture sets have the inclination to become critically stressed. Hence, understanding of the recent stress state and fracture orientations is significant for well planning and fracturing design. The outcome of this study are comprehensive 1D mechanical Earth models (MEMs) for analyzed wells and explanation of behavior of identified CSF under variable stress state as well as understanding of the connectivity of natural fractures within zone subjected to fracturing treatment.
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Ahmadhadi F., Daniel J.-M., Azzizadeh M. & Lacombe O., 2008. Evidence for pre-folding vein development in the Oli-go-miocene Asmari Formation in the Central Zagros Fold Belt, Iran. Tectonics, 27, TC1016. https://doi.org/10.1029/2006TC001978.
Ahmed Elfeel M. & Geiger S., 2012. Static and dynamic assessment of DFN permeability upscaling. [in:] SPE Europec/EAGE Annual Conference, June 4–7, 2012, Copenhagen, Denmark, SPE-154369-MS. https://doi.org/10.2118/154369-MS.
Barton C.A., Zoback M.D. & Moos D., 1995. Fluid flow along potentially active faults in crystalline rock. Geology, 23(8), 683–686. https://doi.org/10.1130/0091-7613(1995) 023<0683:FFAPAF>2.3.CO;2.
Chatterjee R. & Paul S., 2012. Estimation of in-situ stress from cleat orientation for coal bed methane exploration, Jharia Coal-field, India. [in:] 9th Biennial International Conference & Exposition on Petroleum Geophysics, P-060.
Dawson G.K.W., Esterle J.S., Golding S.D. & Massarotto P., 2011. Cleat and joint intersections and mineralisation of a coal core from the Bowen Basin, Queensland, Australia. [in:] The 3rd Asia Pacific Coalbed Methane Symposium, May 3–6, 2011, Brisbane, Australia, 51.
Dershowitz W., Einstein H., LaPoint P., Eiben T., Wadleigh E. & Ivanova V., 1998. Fractured reservoir discrete feature net-work technologies. Final report, March 7, 1996 to September 30, 1998. United States. https://doi.org/10.2172/757228.
Jaeger J.C., Cook N.G.W. & Zimmerman R.W., 2007. Fundamentals of Rock Mechanics. Wiley-Blackwell, Chichester, UK.
Jureczka J., Ihnatowicz A. & Zdanowski A., 2019. Polskie zagłębia węgla kamiennego – zarys historii badań Państwowego Instytutu Geologicznego. Przegląd Geologiczny, 67(7), 578–583.
Kępiński M., 2020. Determination of stress state based on well logging data and laboratory measurements – a CBM well in the southeastern part of the Upper Silesian Coal Basin (Poland). Geology, Geophysics & Environment, 46(2), 77–92. https://doi.org/10.7494/geol.2020.46.2.77.
Kotas A., Kwarciński J. & Jureczka J., 1990. Obliczenie zasobów metanu w pokładach węgla Górnośląskiego Zagłębia Węglo-wego oraz ocena możliwości pozyskania. Narodowe Archiwum Geologiczne PIG-PIB, Warszawa, Poland.
Labourdette R., Hegre J., Imbert P. & Insalaco E., 2008. Reservoir-scale 3D sedimentary modelling: Approaches to integrate sedimentology into a reservoir characterization workflow. [in:] Robinson A., Griffiths P., Price S., Hegre J. & Muggeridge A. (eds.), The Future of Geological Modelling in Hydrocarbon Development, Geological Society, London, Special Publications, 309, 75–85.
Matheron G., Beucher H., de Fouquet C., Galli A., Guérillot D. & Ravenne C., 1987. Conditional simulation of the geometry of fluvio-deltaic reservoirs. [in:] SPE Annual Technical Conference and Exhibition, September 27–30, 1987, Dallas, Texas, SPE-16753-MS. https://doi.org/10.2118/16753-MS.
Milad B., Ghosh S., Suliman M. & Slatt R., 2018. Upscaled DFN models to understand the effects of natural fracture properties on fluid flow in the Hunton Group tight Limestone. [in:] SPE/AAPG/SEG Unconventional Resources Technology Confer-ence, Houston, Texas, USA, July 2018, URTEC-2903038-MS. https://doi.org/10.15530/URTEC-2018-2903038.
Oda M., 1985. Permeability tensor for discontinuous rock masses. Géotechnique, 35(4), 483–495. https://doi.org/10.1680/geot.1985.35.4.483.
Palmer I. & Mansoori J., 1998. How permeability depends on stress and pore pressure in coalbeds: A new model. SPE Reservoir Evaluation & Engineering, 1(6), 539–544. https://doi.org/10.2118/52607-PA.
Reynolds M.M. & Shaw J.C., 2005. Optimizing hydraulic fracturing treatments for CBM production using data from post-frac analysis. [in:] Canadian International Petroleum Conference, June 7–9, 2005, Calgary, Alberta, PETSOC-2005-213. https://doi.org/10.2118/2005-213.
Rogers S.F., 2003. Critical stress-related permeability in fractured rocks. [in:] Ameen M.S. (ed.), Fracture and In-situ Stress Characterization of Hydrocarbon Reservoirs, Geological Society, London, Special Publications, 209, 7–16. https://doi.org/10.1144/GSL.SP.2003.209.01.02.
Sathar S., Reeves H.J., Cuss R.J. & Harrington J.F., 2012. The role of stress history on the flow of fluids through fractures. Mineralogical Magazine, 76(8), 3165–3177. https://doi.org/10.1180/minmag.2012.076.8.30.
Schlumberger, 2008. Characterization of Fractured Reservoirs: Reliable, predictive models to optimize carbonate reservoir performance. https://www.slb.com/-/media/files/theme/brochure/cb-characterization-09os0003.ashx [access: 21.03.2022].
Schlumberger, 2019. Kinetix: Reservoir-centric stimulation-to-production software. https://www.slb.com/completions/stimulation/stimulation-optimization/kinetix-reservoir-centric-stimulation-to-production-software [access: 1.05.2022].
Schlumberger, 2021. Petrel User Assistance.
Słoczyński T. & Drozd A., 2018. Methane potential of the Upper Silesian Coal Basin carboniferous strata – 4D petroleum sys-tem modeling results. Nafta-Gaz, 74(10), 703–714. https://doi.org/10.18668/NG.2018.10.01.
Snow D.T., 1969. Anisotropic Permeability of Fractured Media. Water Resources Research. 5(6), 1273–1289. https://doi.org/10.1029/WR005i006p01273.
Stopa J. & Mikołajczak E., 2018. Empirical modeling of two-phase CBM production using analogy to nature. Journal of Petro-leum Science and Engineering, 171, 1487–1495. https://doi.org/10.1016/j.petrol.2018.07.018.
Xuanhe T., Haiyan Z., Qinqyou L. & Yuija S., 2019. A reservoir and geomechanical coupling simulation method: Case studies in shale gas and CBM reservoir. [in:] International Petroleum Technology Conference, March 26–28, 2019, Beijing, China, IPTC-19288MS. https://doi.org/10.2523/IPTC-19288-MS.
Zdanowski A. & Żakowa H. (eds.), 1995. The Carboniferous System in Poland. Prace Państwowego Instytutu Geologicznego, 148, PIG, Warszawa.
Zheng S. & Xue L., 2011. Modelling and simulation of a new dual porosity CBM reservoir model with an improved permeabil-ity model through horizontal wells. [in:] SPE Middle East Unconventional Gas Conference and Exhibition, January 31–February 2, 2011, Muscat, Oman, SPE-141118-MS. https://doi.org/10.2118/141118-MS.
Zoback M.D., 2007. Reservoir Geomechanics. Cambridge University Press, Cambridge.
Zoback M.D., Barton C.A., Brudy M., Castillo D.A., Finkbeiner T., Grollimund B.R., Moos D.B. et al., 2003. Determination of stress orientation and magnitude in deep wells. International Journal of Rock Mechanics and Mining Sciences, 40(7–8), 1049–1076. https://doi.org/10.1016/j.ijrmms.2003.07.001.
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