The impact of pore size distribution data presentation format on pore structure interpretation of shales
Abstract view|1875|times PDF download|555|times
Abstract
Understanding the nature of pore structures in unconventional reservoirs such as shale oil/gas can assist in evaluating the storage potentials and reveal transport mechanisms. Pore size distribution is one of the most importance pore structure parameters which needs to be evaluated accurately and presented in various formats to provide more in-depth information from the rocks. In this paper, several shale samples were collected and analyzed by using N2 adsorption and high-pressure mercury intrusion. Three different presentations of the pore size distributions: incremental pore volume versus diameter (DV), differential pore volume versus diameter (DV/Dd) and the log differential pore volume versus diameter (DV/DlogD) were calculated from these two different methods, respectively. The comparison results showed that different presentations from the same sample could demonstrate various type of important pore information. The DV curve is largely depended on the experimental data spacing while the other two presentations do not. The DV/Dd curve could amplify the role of smaller pore ranges while the DV/Dlogd would represent the importance of the larger pore ranges. The multifractal analysis showed that the heterogeneity index calculated from the DV/Dd curve is much larger than the heterogeneity index from the DV/Dlog curve. It was concluded that DV/Dd is more suitable for characterizing the pore size distribution from N2 adsorption while DV/Dlogd works better for the high-pressure mercury intrusion.
Cited as: Liu, K., Ostadhassan, M. The impact of pore size distribution data presentation format on pore structure interpretation of shales. Advances in Geo-Energy Research, 2019, 3(2): 187-197, doi: 10.26804/ager.2019.02.08
Keywords
Full Text:
PDFReferences
Bustin, R.M., Bustin, A.M., Cui, A., et al. Impact of shale properties on pore structure and storage characteristics. Paper SPE119892 Presented at SPE Shale Gas Production Conference, Texas, USA, 16-18 November, 2008.
Cao, T., Song, Z., Wang, S., et al. A comparative study of the specific surface area and pore structure of different shales and their kerogens. Sci. China Earth Sci. 2015, 58(4): 510-522.
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: 606-616.
Clarkson, C.R., Wood, J., Burgis, S.E., et al. Nanopore structure analysis and permeability predictions for a tight gas/shale reservoir using low-pressure adsorption and mercury intrusion techniques. Paper SPE155537 Presented at SPE Americas Unconventional Resources Conference, Pennsylvania, USA, 5-7 June, 2012.
Do, D.D., Do, H.D. Pore characterization of carbonaceous materials by DFT and GCMC simulations: A review. Adsorp. Sci. Technol. 2003, 21(5): 389-423.
Ferreiro, J.P., Miranda, J.G.V., Vzquez, E.V. Multifractal analysis of soil porosity based on mercury injection and nitrogen adsorption. Vadose Zone J. 2010, 9(2): 325-335.
Gao, Z., Hu, Q. Estimating permeability using median pore-throat radius obtained from mercury intrusion porosimetry. J. Geophys. Eng. 2013, 10(2): 025014.
Han, H., Cao, Y., Chen, S., et al. Influence of particle size on gas-adsorption experiments of shales: An example from a Longmaxi Shale sample from the Sichuan Basin, China. Fuel 2016, 186: 750-757.
Hazra, B., Wood, D.A., Vishal, V., et al. Pore-characteristics of distinct thermally mature shales: Influence of particle sizes on low pressure CO2 and N2 adsorption. Energy Fuels 2018, 32(8): 8175-8186.
Kuila, U. Measurement and interpretation of porosity and pore-size distribution in mudrocks: The hole story of shales. Colorado, Colorado School of Mines, 2013.
Kumar, S., Mendhe, V.A., Kamble, A.D., et al. Geochemical attributes, pore structures and fractal characteristics of Barakar shale deposits of Mand-Raigarh Basin, India. Mar. Pet. Geol. 2019, 103: 377-396.
Liu, K., Ostadhassan, M., Kong, L., et al. Multifractal characteristics of Longmaxi Shale pore structures by N2 adsorption: A model comparison. J. Pet. Sci. Eng. 2018, 168: 330-341.
Liu, K., Ostadhassan, M., Kong, L., et al. Fractal and multifractal characteristics of pore throats in the Bakken shale. Transp. Porous Media 2019a, 126(3): 579-598.
Liu, K., Ostadhassan, M., Sun, L. A comprehensive pore structure study of the Bakken Shale with SANS, N2 adsorption and mercury intrusion. Fuel 2019b, 245: 274-285.
Liu, K., Ostadhassan, M., Zou, J., et al. Nanoscale pore structure characterization of the Bakken shale in the USA. Fuel 2017, 209: 567-578.
Liu, M., Mostaghimi, P. Characterisation of reactive transport in pore-scale correlated porous media. Chem. Eng. Sci. 2017, 173: 121-130.
Mastalerz, M., Schimmelmann, A., Drobniak, A., et al. Porosity of Devonian and Mississippian New Albany Shale across a maturation gradient: Insights from organic petrology, gas adsorption, and mercury intrusion. AAPG Bull. 2013, 97(10): 1621-1643.
Meyer, K., Klobes, P. Comparison between different pre-sentations of pore size distribution in porous materials. Fresenius J. Anal. Chem. 1999, 363(2): 174-178.
Sorelli, L., Constantinides, G., Ulm, F.J., et al. The nano-mechanical signature of ultra high performance concrete by statistical nanoindentation techniques. Cem. Concr. Res. 2008, 38(12): 1447-1456.
Tang, X., Jiang, Z., Li, Z., et al. The effect of the variation in material composition on the heterogeneous pore structure of high-maturity shale of the Silurian Longmaxi formation in the southeastern Sichuan Basin, China. J. Nat. Gas Sci. Eng. 2015, 23: 464-473.
Thommes, M., Kaneko, K., Neimark, A.V., et al. Physisorption of gases, with special reference to the evaluation of surface area and pore size distribution (IUPAC Technical Report). Pure Appl. Chem. 2015, 87(9-10): 1051-1069.
Ulm, F.J., Vandamme, M., Bobko, C., et al. Statistical indentation techniques for hydrated nanocomposites: Concrete, bone, and shale. J. Am. Ceram. Soc. 2007, 90(9): 2677-2692.
Wang, L., Fu, Y., Li, J., et al. Mineral and pore structure characteristics of gas shale in Longmaxi formation: A case study of Jiaoshiba gas field in the southern Sichuan Basin, China. Arab. J. Geosci. 2016, 9(19): 733.
Wang, M., Xie, W., Huang, K., et al. Fine characterization of lithofacies and pore network structure of continental shale: case study of the Shuinan Formation in the north Jiaolai Basin, China. J. Pet. Sci. Eng. 2019, 175: 948-960.
Washburn, E.W. The dynamics of capillary flow. Phys. Rev. 1921, 17(3): 273.
Yang, Y., Yao, J., Wang, C., et al. New pore space characterization method of shale matrix formation by considering organic and inorganic pores. J. Nat. Gas Sci. Eng. 2015, 27: 496-503.
Yuan, Y., Rezaee, R., Verrall, M. Pore characterization and clay bound water assessment in shale with a combination of NMR and low-pressure nitrogen gas adsorption. Int. J. Coal Geol. 2018, 194: 11-21.
Zou, J., Rezaee, R., Xie, Q., et al. Investigation of moisture effect on methane adsorption capacity of shale samples. Fuel 2018, 232: 323-332.
Refbacks
- There are currently no refbacks.
Copyright (c) 2019 The Author(s)
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.