Characterization of pore systems in fine-grained carbonate rocks using digital core technology
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Abstract
The characterization of pore systems in fine-grained carbonate rocks faces numerous challenges due to the significant complexity of microscopic features, including a variation of micro- and nanoscale pore sizes and the complex pore-throat distribution. In this work, digital core technology was adopted to characterize the pore systems of lacustrine fine-grained carbonate rocks in the Yingxi area of Qaidam Basin. The simulated results indicated that the pore types predominantly contain intercrystalline and dissolution pores. The former exhibit high porosity but extremely low permeability and are primarily developed in bedded dolostones. Conversely, the latter show relatively higher permeability, predominantly developed in bedded calcareous dolostones. The elevated dolomite content provides the material basis for the development of intercrystalline pores, while the extremely small throat radius constrains the fluidity of this pore system. In addition, the dissolution has a great impact on improving the permeable capability of intercrystalline pore system via increasing the radius and specific surface area of pores and throats.
Document Type: Research highlight
Cited as: Hu, C., Zhao, Z., Gao, S., Liu, C., Wu, K., Pang, P. Characterization of pore systems in fine-grained carbonate rocks using digital core technology. Advances in Geo-Energy Research, 2024, 12(1): 77-80. https://doi.org/10.46690/ager.2024.04.07
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Anovitz, L. M., Cole, D. R. Characterization and analysis of porosity and pore structures. Reviews in Mineralogy and Geochemistry, 2015, 80(1): 61-164.
Blunt, M. J., Bijeljic, B., Dong, H., et al. Pore-scale imaging and modelling. Advances in Water resources, 2013, 51: 197-216.
Denney, D. Robust determination of the pore-space morphology in sedimentary rocks. Journal of Petroleum Technology, 2008, 56(5): 69-70.
Guo, R., Ma, D., Zhang, Y., et al. Characteristics and formation mechanism of overpressure pore-fracture reservoirs for Upper Member of Xiaganchaigou Formation in the west of Yingxiong Ridge, Qaidam Basin. Acta Petrolei Sinica, 2019, 40(4): 411-422. (in Chinese)
Knackstedt, M. A., Arns, C. H., Limaye, A., et al. Digital core laboratory: Properties of reservoir core derived from 3D images. Paper SPE 87009 Presented at the SPE Asia Pacific Conference on Integrated Modelling for Asset Management, Kuala Lumpur, Malaysia, 29-30 March, 2004.
Li, G., Zhu, R., Zhang, Y., et al. Geological characteristics, evaluation criteria and discovery significance of Paleogene Yingxiongling shale oil in Qaidam Basin, NW China. Petroleum Exploration and Development, 2022, 49(1): 21-36.
Li, X., Li, B., Liu, F., et al. Advances in the application of deep learning methods to digital rock technology. Advances in Geo-Energy Research, 2023, 8(1): 5-18.
Liu, C., Zhang, L., Li, Y., et al. Effects of microfractures on permeability in carbonate rocks based on digital core technology. Advances in Geo-Energy Research, 2022, 6(1): 86-90.
Liu, Z., Zhang, Y., Song, G., et al. Mixed carbonate rocks lithofacies features and reservoirs controlling mechanisms in a saline lacustrine basin in Yingxi area, Qaidam Basin, NW China. Petroleum Exploration and Development, 2021, 48(1): 80-94.
Lønøy, A. Making sense of carbonate pore systems. AAPG Bulletin, 2006, 90(9): 1381-1405.
Morse, J. W., Arvidson, R. S. The dissolution kinetics of major sedimentary carbonate minerals. Earth-Science Reviews, 2002, 58(1-2): 51-84.
Pan, Y., Huang, Z., Li, T., et al. Pore structure characteristics and evaluation of lacustrine mixed fine-grained sedimentary rocks: A case study of the Lucaogou Formation in the Malang Sag, Santanghu Basin, Western China. Journal of Petroleum Science and Engineering, 2021, 201: 108545.
Regnet, J. B., David, C., Robion, P., et al. Microstructures and physical properties in carbonate rocks: A comprehensive review. Marine and Petroleum Geology, 2019, 103: 366-376.
Ruspini, L. C., Øren, P. E., Berg, S., et al. Multiscale digital rock analysis for complex rocks. Transport in Porous Media, 2021, 139(2): 301-325.
Tang, X., Jiang, Z., Jiang, S., et al. Heterogeneous nanoporosity of the Silurian Longmaxi Formation shale gas reservoir in the Sichuan Basin using the QEMSCAN, FIB-SEM, and nano-CT methods. Marine and Petroleum Geology, 2016, 78: 99-109.
Wang, L.. Multiscale photoacoustic microscopy and computed tomography. Nature Photonics, 2009, 3(9): 503-509.
DOI: https://doi.org/10.46690/ager.2024.04.07
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