Quantitative prediction of structural fractures in the Paleocene lower Wenchang formation reservoir of the Lufeng Depression

Hui Li, Fusheng Yu, Meng Wang, Yanfei Wang, Yilun Liu

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Currently, the lower Paleogene Wenchang formation in the Lufeng Depression is the primary focus of reservoir development. The structural fractures that have formed inside of it not only serve as the principal path for oil migration, but also as oil storage space. As a result, the distribution features of structural fractures are crucial for future petroleum exploration and development in the Lufeng Depression. At the same time, with the quantity of conventional reservoirs in the Lufeng Depression on the decline, it is critical to determine the fracture distribution criteria for deep unconventional reservoirs. In this work, the lower Paleogene Wenchang formation in the Lufeng Depression is used as the research stratum. Then, based on existing logging data for the research region, the distinct physical properties of different rock kinds are calculated. The simulation results of the paleotectonic stress field in the study area using the finite element numerical simulation software ANSYS show that the high-value areas of maximum principal stress are the high-value areas of the uplift belt and low uplift, and the areas with low maximum principal stress are the low-value areas of Lufeng 13 Sag and the gentle slope belt in the north of Lufeng middle-low uplift. The fracture density is quantitatively predicted after the stress field simulation, which shows good agreement between the anticipated and actual observed values, and an average error of 13.61%. The predicted findings may provide new ideas for future petroleum exploration.

cited as: Li, H., Yu, F., Wang, M., Wang, Y., Liu, Y. Quantitative prediction of structural fractures in the Paleocene lower Wenchang formation reservoir of the Lufeng Depression. Advances in Geo-Energy Research, 2022, 6(5): 375-387. https://doi.org/10.46690/ager.2022.05.03


Lufeng Depression, lower Wenchang formation, finite element simulation, fracture quantitative prediction

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Aydin, A. Failure modes of shales and their implications for natural and man-made fracture assemblages. AAPG Bulletin, 2014, 98(11): 2391-2409.

Baytok, S., Pranter, M. J. Fault and fracture distribution within a tight-gas sandstone reservoir: Mesaverde Group, Mamm Creek Field, Piceance Basin, Colorado, USA. Petroleum Geoscience, 2013, 19(3): 203-222.

Chen, Q., Fan, T., Li, X., et al. In situ measurements and comprehensive research on the present crustal stress of Northern South China Sea. Chinese Journal of Geophysics, 2014, 57(8): 2518-2529. (in Chinese)

Chen, J., Wang, L., Wang, C., et al. Automatic fracture optimization for shale gas reservoirs based on gradient descent method and reservoir simulation. Advances in Geo-Energy Research, 2021, 5(2): 191-201.

Cui, J., Tang, Z., Wang, L., et al. The spatial distribution of microfaults and the tectonic stress field analysis during brittle deformation of the main hole core at Chinese Continental Sciences Drilling (CCSD). Acta Petrologica Sinica, 2009, 25(7): 1619-1626. (in Chinese)

Cui, X., Xia, B., Zhang, Y., et al. A numerical modeling study on the “Asthenosphere Upwelling” of South China Sea. Geotectonica et Metallogenia, 2005, 29(3): 334-338. (in Chinese)

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

Ding, Z., Qian, X., Huo, H., et al. A new method for quantitative prediction of the tectonic fractures-two-factor method. Oil and Gas Geology, 1998, 19(1): 1-7. (in Chinese)

Feng, W., Wang, F. Guan, J., et al. Geologic structure controls on initial productions of Lower Silurian Longmaxi shale in south China. Marine and Petroleum Geology, 2018, 91: 163-178.

Gale, J. F. W., Laubach, S. E., Olson, J. E., et al. Natural fractures in shale: A review and new observations. AAPG Bulletin, 2014, 98(11): 2165-2216.

Islam, M. S., Shinjo, R., Kayal, J. R. The tectonic stress field and deformation pattern of northeast India, the Bengal basin and the Indo-Burma Ranges: A numerical approach. Journal of Asian Earth Sciences, 2011, 40(1): 121-131.

Kudrass, H. R., Wiedicke, M., Cepek, P., et al. Mesozoic and Cainozoic rocks dredged from the South China Sea (Reed Bank area) and Sulu Sea and their significance for plate- tectonic reconstructions. Marine and Petroleum Geology, 1986, 3(1): 19-30.

Lavrov, A. The Kaiser effect in rocks: Principles and stress estimation techniques. International Journal of Rock Mechanics and Mining Sciences, 2003, 40(2): 151-171.

Laurent, M., Frantz, M. Chronologic modeling of faulted and fractured reservoirs using geomechanically based restoration: Technique and industry applications. AAPG Bulletin, 2006, 90(8): 1201-1226.

Liao, Z., Cheng, C., Cheng, L., et al. Study on facies-controlled model of a reservoir in Xijiang 24-3 oilfield in the Northern Pearl River Mouth Basin. Advances in Geo-Energy Research, 2018, 2(3): 282-291.

Liu, J., Ding, W., Wang, R., et al. Simulation of paleotectonic stress fields and quantitative prediction of multi-period fractures in shale reservoirs: A case study of the Niutitang Formation in the Lower Cambrian in the Cen’gong block, South China. Marine and Petroleum Geology, 2017, 84: 289-310.

Liu, G., Lu, H., He. S., et al., Application of finite element analysis in a reservoir in situ-stress research. Science Technology and Engineering, 2009, 9(24): 7430-7435. (in Chinese)

Liu, C., Zhang, L., Martyushev, D. A., 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.

Nelson, R. A. Geologic analysis of Naturally Fractured Reservoirs. Amsterdam, the Netherlands, Elsevier, 2001. Nissen, M. T., Fournier, A., Dahlen, F. A. A two-dimensional spectral-element method for computing spherical-earth seismograms–I. Moment-tensor source. Geophysical Journal International, 2007, 168(3): 1067- 1092.

Olson, J. E., Laubach, S. E., Lander, R. H. Natural fracture characterization in tight gas sandstones: Integrating mechanics and diagenesis. AAPG Bulletin, 2009, 93(11): 1535-1549.

Price, N. J. Fault and Joint Development in Brittle and Semi-brittle Rock. Amsterdam, the Netherlands, Elsevier, 2016.

Rajabi, M., Sherkati, S., Bohloli, B., et al. Subsurface fracture analysis and determination of in-situ stress direction using FMI logs: An example from the Santonian carbonates (Ilam Formation) in the Abadan Plain, Iran. Tectonophysics, 2010, 492(1): 192-200.

Ross, A. R., Brown, L. D., Pananont, P., et al. Deep reflection surveying in central Tibet: Lower-crustal layering and crustal flow. Geophysical Journal International, 2004, 156(1): 115-128.

Wang, X., Zhang, X., Lin, H., et al. Paleogene geological framework and tectonic evolution of the central anticlinal zone in Lufeng 13 sag, Pearl River Mouth Basin. Petroleum Research, 2019, 4(3): 238-249.

Westaway, R., Maddy, D., Bridgland, D. Flow in the lower continental crust as a mechanism for the Quaternary up- lift of south-east England: Constraints from the Thames terrace record. Quaternary Science Reviews, 2002, 21(4): 559-603.

Wu, L., Liu, C., Zhang, T., et al. The application of two factor method in quantitative prediction of tectonic fractures: A case study of shale in QING-1 member, Songliao Basin, Journal of Geomechanics, 2018, 24(5): 598-605. (in Chinese)

Yu, F., Koyi, H. A., Zhang, X. Intersection patterns of normal faults in the Lufeng Depression of Pearl River Mouth Basin, China: Insights from 4D physical simulations. Journal of Structural Geology, 2016, 93: 67-90.

Zeng, H., Song, H. A study on 3-D finite element inverse model. Journal of Geomechanics, 1999, 5(1): 45-49. (in Chinese)

DOI: https://doi.org/10.46690/ager.2022.05.03


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