Integrated rock physics characterization of unconventional shale reservoir: A multidisciplinary perspective
Abstract view|167|times PDF download|142|times
Abstract
Renowned for its organic richness, unconventional shale presents both unique challenges and opportunities for hydrocarbon extraction and various geo-engineering applications, owing to its complex storage, flow, and stimulation properties. It is essential, from a multidisciplinary perspective, to characterize the rock physics response and construct rock physics model for unconventional shale reservoirs. A maturity-constrained rock physics modeling method for shales, in conjunction with geochemical analyses, is proposed, employing the stepwise homogenization method to quantify the scale-dependent elastic and anisotropic behavior of laminated shales. Considering the complex pore structure of shale, combined with the microscale effects of fluid transport, various forces, and microfracture features, the multiphase fluid flow behavior can be accurately characterized. Then, from the perspective of fracturing performance, it is necessary to develop a new fracability evaluation model for unconventional shale reservoirs. This model integrates fracture mechanics theory, the elastic and mechanical properties of rocks, fracturing operations, reservoir geological characteristics, and in-situ stress to thoroughly evaluate fracability. Unconventional petrophysicists must move beyond traditional hydrocarbon evaluation to embrace interdisciplinary approaches, which requires comprehensive understanding and characterization of the storage, flow, and stimulation capacities, thereby optimizing development strategies and maximize resource utilization.
Document Type: Perspective
Cited as: Zhao, L., Zhao, Y., Yan, D., Zhu, J., Cai, J. Integrated rock physics characterization of unconventional shale reservoir: A multidisciplinary perspective. Advances in Geo-Energy Research, 2024, 14(2): 86-89. https://doi.org/10.46690/ager.2024.11.02
Keywords
Full Text:
PDFReferences
Hart, B. S., Macquaker, J. H., Taylor, K. G. Mudstone (“shale”) depositional and diagenetic processes: Implications for seismic analyses of source-rock reservoirs. Interpretation, 2013, 1(1): B7-B26.
Luo, W., Tang, C., Zhou, Y., et al. A new semi-analytical method for calculating well productivity near discrete fractures. Journal of Natural Gas Science and Engineering, 2018, 57: 216-223.
Meng, F., Wong, L., Zhou, H. Rock brittleness indices and their applications to different fields of rock engineering. A review. Journal of Rock Mechanics and Geotechnical Engineering, 2021, 13(1): 221-247.
Mokhtari, M., Honarpour, M. M., Tutuncu, A. N., et al. Characterization of elastic anisotropy in eagle ford shale: Impact of heterogeneity and measurement scale. SPE Reservoir Evaluation & Engineering, 2016, 19(3): 429-439.
Qin, X., Wu, J., Xia, Y., et al. Multicomponent image-based modeling of water flow in heterogeneous wet shale nanopores. Energy, 2024, 298: 131367.
Spain, D. R., Merletti, G. D., Dawson, W. Beyond volumetrics: Unconventional petrophysics for efficient resource appraisal (example from the Khazzan field, Sultanate of Oman). Paper SPE-172920-MS Presented at the SPE Middle East Unconventional Resources Conference and Exhibition, Muscat, Oman, 26-28 January, 2015.
Wang, F., Yang, K., Cai, J. Fractal characterization of tight oil reservoir pore structure using nuclear magnetic resonance and mercury intrusion porosimetry. Fractals, 2018, 26(2): 1840017.
Wang, H., Su, Y., Wang, W., et al. Relative permeability model of oil-water flow in nanoporous media considering multi-mechanisms. Journal of Petroleum Science and Engineering, 2019, 183: 106361.
Xiao, J., Cai, J., Xu, J. Saturated imbibition under the influence of gravity and geometry. Journal of Colloid and Interface Science, 2018, 521: 226-231.
Xu, J., Zhan, S., Wang, W., et al. Molecular dynamics simulations of two-phase flow of n-alkanes with water in quartz nanopores. Chemical Engineering Journal, 2022, 430: 132800.
Zhan, S., Su, Y., Jin, Z., et al. Study of liquid-liquid two-phase flow in hydrophilic nanochannels by molecular simulations and theoretical modeling. Chemical Engineering Journal, 2020, 395: 125053.
Zhao, L., Cai, Z., Qin, X., et al. An empirical elastic anisotropy prediction model in self-sourced reservoir shales and its influencing factor analysis. Geophysics, 2023a, 88(3): MR117-MR126.
Zhao, L., Zhu, J., Qin, X., et al. Joint geochemistry-rock physics modeling: Quantifying the effects of thermal maturity on the elastic and anisotropic properties of organic shale. Earth-Science Reviews, 2023b, 247: 104627.
Zou, C., Zhao, Q., Cong, L., et al. Development progress, potential and prospect of shale gas in China. Natural Gas Industry, 2021, 41(1): 1-14. (in Chinese)
DOI: https://doi.org/10.46690/ager.2024.11.02
Refbacks
- There are currently no refbacks.
Copyright (c) 2024 The Author(s)
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.