Characterization of marine-terrigenous transitional Taiyuan formation shale reservoirs in Hedong coal field, China

Abstract

To better understand the basic characteristics of Marine-terrigenous Transitional Taiyuan formation shale (TYS) reservoirs in Hedong coal field, a series of reservoir evaluation experiments were conducted on 33 core samples, which were collected from an exploration shale gas well (SL-1). The results show that organic matters in TYS are Type III gas prone kerogen and are in the high-maturity stage with an average Ro value of 1.87% (ranging from 1.71% to 2.10%). The total organic carbon (TOC) is ranging from 0.29% to 11.87% with an average value of 2.91% and gas content is from 0.41% to 2.96 ml/g, which indicates that TYS still has certain hydrocarbon generation potential despite a mass generation of hydrocarbons occurred during the geological history. X-ray diffraction analysis shows that TYS is composed mainly of quartz minerals and clay minerals with an average brittleness index of 46.5%, which is relatively favorable for hydraulic fracture. Pore size of TYS ranges from a few nanometers to hundreds of nanometers. The permeability is irrelevant with porosity and its values are all lower than 0.1 md. The average value of Brunauer- Emmett-Teller surface area and Barrett-Joyner-Halendar volumes are 8.57 m² /g and 1.84 cm³ /100g, respectively. Similar to previous studies, TOC content is a decisive control on gas adsorption capacity in this study.

Cited as: Li, K., Chen, G., Li, W., Wu, X., Tan, J., Qu, J. Characterization of marine-terrigenous transitional Taiyuan formation shale reservoirs in Hedong coal field, China. Advances in Geo-Energy Research, 2018, 2(1): 72-85, doi: 10.26804/ager.2018.01.07

References

Barrett, E.P., Johner, L.S., Halenda, P.P. The determination of pore volume and area distributions in porous substances. I. computations from nitrogen isotherms. J. Am. Chem. Soc. 1951, 73(7): 373-380.

Bowker, K.A. Barnett Shale gas production, Fort Worth Basin: Issues and discussion. AAPG Bull. 2007, 91(4): 523-533.

Brunauer, S., Emmett, P.H., Teller, E. Adsorption of gases in multimolecular layers. J. Am. Chem. Soc. 1938, 60(2): 309-319.

Cai, S.H., Liu, H.Q., He, S.L., et al. Shale reservoir characteristics and exploration potential in the target: A case study in the Longmaxi Formation from the southern Sichuan Basin of China. J. Nat. Gas Sci. Eng. 2016, 31: 86-97.

Chen, S.B., Zhu, Y.M., Wang, H.Y., et al. Shale gas reservoir characterization: a typical case in the southern Sichuan Basin of China. Energy 2011, 36(11): 6609-6616.

Clarkson, C.R., Freeman, M., He, L., et al. Characterization of tight gas reservoir pore structure using USANS/SANS and gas adsorption analysis. Fuel 2012, 95: 371-385.

Clarkson, C.R., Jensen, J.L., Pedersen, P.K., et al. Innovative methods for flow-unit and pore-structure analyses in a tight siltstone and shale gas reservoir. AAPG Bull. 2012, 96(2): 355-374.

Clarkson, C.R., Solano, N., Bustin, R.M., et al. Pore structure characterization of North American shale gas reservoirs using USANS/SANS, gas adsorption, and mercury intrusion. Fuel 2013, 103: 608-616.

Curtis, J.B. Fractured shale-gas systems. AAPG Bull. 2002, 86(11): 1921-1938.

Feng, S.A., Ye, S.L., Zhang, J.P. Coalbed methane resources in the Ordos basin and its development potential. Geological Bulletin of China 2002, 21(10): 658-662. (in Chinese)

Firouzi, M., Rupp, E.C., Liu, C.W. Molecular simulation and experimental characterization of the nanoporous structures of coal and gas shale. Int. J. Coal Geol. 2014, 121: 123-128.

Fu, X.H., Deleqiati, J., Zhu, Y.N., et al. Research characteris-tics and separated reservoirs’ drainage of unconventional gas in coal measures. Earth Science Frontiers 2016, 23(3): 36-40. (in Chinese)

Guo, Y.H., Liu, H.J., Quan, B., et al. Late paleozoic sedimentary system and paleogeographic evolution of Ordos area. Acta Sedimentologica Sinica 1998, 16(3): 44-51. (in Chinese)

Hao, S.M., Hui, K.Y., Li, L. Reservoir features of Daniudi low-permeability gas field in Ordos basin and its exploration and development technologies. Oil & Gas Geology 2006, 27(6): 762-768. (in Chinese)

Hill, D.G., Nelson, C.R. Reservoir properties of the Upper Cretaceous Lewis Shale, a new natural gas play in the San Juan Basin. AAPG Bull. 2000, 84(8): 1240.

Hill, R.J., Jarvie, D.M., Zumberge, J., et al. Oil and gas geochemistry and petroleum systems of the Fort Worth Basin. AAPG Bull. 2007, 91(4): 445-473.

Huang, D.F., Li, J.C., Zhang, D.J. Kerogen types and study on effectiveness limitation and interrelation of their identification parameters. Acta Sedimentologica Sinica 1984, 2(3): 18-33. (in Chinese)

Hunt, J.M. Petroleum Geochemistry and Geology. New York, USA, Freeman and Company, 1996.

Jarvie, D.M., Hill, R.J., Ruble, T.E., et al. Unconventional shale-gas systems: The Mississippian Barnett Shale of north-central Texas as one model for thermogenic shale-gas assessment. AAPG Bull. 2007, 91(4): 475-499.

Jarvie, D.M., Lundell, L.L. Kerogen type and thermal trans-formation of organic matter in the Miocene Monterey Formation, in The Monterey Formation: From Rocks to Molecules, edited by C.M. Isaacs and J. Rullk ¨otter, Columbia University Press, New York, pp. 268-295, 2001.

Ji, L.M., Zhang, T.W., Milliken, K.L. Experimental investiga-tion of main controls to methane adsorption in clay-rich rocks. Appl. Geochem. 2012, 27(12): 2533-2545.

Jiang, Y.Q., Dong, D.Z., Qi, L. Basic features and evaluation of shale gas reservoirs. Natural Gas Industry 2010, 30(10): 7-12. (in Chinese)

Jie, M.X. Prospects in coalbed methane gas exploration and development in the eastern Ordos Basin. Natural Gas Industry 2010, 30(6): 1-6. (in Chinese)

Langmuir, I. The adsorption of gases on plane surfaces of glass, mica and platinum. J. Am. Chem. Soc. 1918, 40(9): 1351-1403.

Li, S.X., Deng, X.Q., Pang, J.L., et al. Relationship between petroleum accumulation of mesozoic and tectonic movement in Ordos basin. Acta Sedimentologica Sinica 2010, 28(4): 798-807. (in Chinese)

Loucks, R.G., Reed, R.M., Ruppel, S.C., et al. Spectrum of pore types and networks in mudrocks and a descriptive classification for matrix-related mudrock pores. AAPG Bull. 2012, 96(6): 1071-1098.

Lu, X.C., Li, F.C., Watson, A.T. Adsorption studies of natural gas storage in Devonian shales. SPE Form. Eval. 1995, 10(2): 109-113.

Montgomery, S.L., Jarvie, D.M., Bowker, K.A., et al. Mississippian Barnett Shale, Fort Worth basin, north-central Texas: Gas-shale play with multitrillion cubic foot potential. AAPG Bull. 2005, 89(2): 155-157.

Nie, H.K., Zhang, J.C. Types and characteristics of shale gas reservoir: A case study of Lower Paleozoic in and around Sichuan Basin. Petroleum Geology and Experiment 2011, 33(3): 219-225. (in Chinese)

Peltonen, C., Marcussen, Φ ., Bjφrlykke, K., et al. Clay mineral diagenesis and quartz cementation in mudstones: The effects of smectite to illite reaction on rock properties. Mar. Pet. Geol. 2009, 26(6): 887-898.

Ross, D.J.H., Bustin, R.M. Shale gas potential of the lower jurassic gordondale member, northeastern British Columbia, Canada. Bull. Can. Pet. Geol. 2007, 55(1): 55-75.

Ross, D.J.H., Bustin, R.M. Characterizing the shale gas resource potential of Devonian-Mississippian strata in the Western Canada sedimentary basin: Application of an integrated formation evaluation. AAPG Bull. 2008, 92: 87-125.

Ross, D.J.K., Bustin, R.M. The importance of shale composi-tion and pore structure upon gas storage potential of shale gas reservoirs. Mar. Pet. Geol. 2009, 26(6): 916-927.

Rouquerol, J., Avnir, D., Fairbridge, C.W., et al. Recommenda-tions for the characterization of porous solids (Technical Report). Pure Appl. Chem. 1994, 66(8): 1739-1758.

Strapoc, D., Mastalerz, M., Schimmelmann, A., et al. Geochemical constraints on the origin and volume of gas in the New Albany Shale (Devonian-Mississippian), eastern Illinois Basin. AAPG Bull. 2010, 94(11): 1713-1740.

Tang, Y., Zhang, J.C., Liu, Z.J., et al. Use and improvement of the desorption method in shale gas content tests. Natural Gas Industry 2011, 31(10): 108-112. (in Chinese)

Tissot, B.P., Welte, D.H. Petroleum Formation and Occur-rence: A New Approach to Oil and Gas Exploration. Berlin, Germany, Springer, 1978.

Wang, C.C., Juang, L.C., Lee, C.K., et al. Effects of exchanged surfactant cations on the pore structure and adsorption characteristics of montmorillonite. J. Colloid Interface Sci. 2004, 280(1): 27-35.

Wang, Q., Chen, X., Jha, A.N., et al. Natural gas from shale formation-The evolution, evidence and challenges of shale gas revolution in the United States. Renewable Sustainable Energy Rev. 2014, 30: 1-28.

Wang, S.J., Li, D.H. Exploration potential of shale gas in the Ordos Basin. Natural Gas Industry 2011, 31(12): 40-46.

(in Chinese) Wang, S.W., Duan, L.X., Cheng, Z.H., et al. Reservoir evaluation for exploration and development of Coal-bed Gas. Natural Gas Industry 2004, 24: 82-84. (in Chinese)

Warlick, D. Gas shale and CBM development in North America. Oil Gas Financ. J. 2006, 3(11): 1-5.

Wei, C., Sang, S., Liu, H., et al. Coalbed gas geological characters in the middle and south part of Hedong Coal field and their exploration and exploitation future. Geology and Mineral Resources North China 1998, 13: 243-248. (in Chinese)

Wu, Y., Fan, T.L., Zhang, J.C., et al. Characterization of the upper Ordovician and lower Silurian marine shale in northwestern Guizhou province of the upper Yangtze block, south China: Implication for shale gas potential. Energy Fuels 2014, 28(6): 3679-3687.

Xiao, X.M., Zhao, B.Q., Thu, Z.L., et al. Upper Paleozoic petroleum system, Ordos Basin, China. Mar. Pet. Geol. 2005, 22(8): 945-963.

Xie, Y.G,, Meng, S.Z., Wan, H. Analysis on geological conditions of multi-type natural gas reservoir in coal measure strata of Linxing Area. Coal Science and Technology 2015, 43(9): 71-75. (in Chinese)

Yang, F., Ning, Z.F., Liu, H.Q. Fractal characteristics of shales from a shale gas reservoir in the Sichuan Basin, China. Fuel 2014, 115: 378-384.

Zhang, J.C., Jiang, S.L., Tang, X., et al. Accumulation types and resources characteristics of shale gas in China. Natural Gas Industry 2009, 29(12): 109-114. (in Chinese)

Zhang, J.P., Fan, T.L., Li, J., et al. Characterization of the lower cambrian shale in the Northwestern Guizhou Province, South China: Implications for shale-gas potential. Energy Fuels 2015, 29(10): 6383-6393.

Zhang, Q., Liu, R.H., Pang, Z.L., et al. Characterization of microscopic pore structures in Lower Silurian black shale (S1l), southeastern Chongqing, China. Mar. Pet. Geol. 2016, 71: 250-259.

Zou, C.N., Dong, D.Z., Wang, S.J., et al. Geological characteristics and resource potential of shale gas in China. Pet. Exolor. Dev. 2010, 37(6): 641-653.