PDF(8347 KB)
Characteristics of Fluid Inclusions and Pressure Recovery during Hydrocarbon Accumulation Period in Jurassic Sangonghe Formation in Fukang Sag, Junggar Basin
Zhang Hongrui, Liu Hua, Han Zaihua, Li Jun, Zhang Weibiao
PDF(8347 KB)
PDF(8347 KB)
Characteristics of Fluid Inclusions and Pressure Recovery during Hydrocarbon Accumulation Period in Jurassic Sangonghe Formation in Fukang Sag, Junggar Basin
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Formation pressure recovery is of great significance for the analysis of hydrocarbon accumulation process. This study restores the pressure of Jurassic Sangonghe Formation during hydrocarbon accumulation period in Fukang Sag with inclusion observation technology, the inclusion salinity homogenization temperature method and PVTx simulation method. The results show that the overpressure of Jurassic begins from 4 500 m, and the overpressure amplitude increases with the increase in buried depth, in Fukang Sag. At the same depth, the overpressure of the main reservoir of Sangonghe Formation is obvious. There are two stages of hydrocarbon inclusions captured in the Sangonghe Formation. The fluorescence colors of hydrocarbon inclusions captured in the first stage which occur inside the quartz particles are mainly yellow and yellowish green, and the main temperature range of associated aqueous inclusions is 85-95 ℃, corresponding to the hydrocarbon accumulation in the middle of Early Cretaceous. Since Neogene, the fluorescence color of hydrocarbon inclusions captured in the second stage, which occur along the healing seams that cut through secondary enlargement of quartz or the whole the after the secondary, is mainly bluish white, and the number of the gas-liquid two-phase hydrocarbon inclusions significantly increases. The homogenization temperature of associated aqueous inclusions is 105-115 ℃, corresponding to hydrocarbon accumulation since the Neogene. During hydrocarbon migration and accumulation, overpressure developed in the Sangonghe Formation. The pressure coefficient in the first stage is 1.39-1.44 and that in the second stage is as high as 2.11. The pressure presents the evolution mode of “pressurization-decompression-strong pressurization”. Strong overpressure represents strong hydrocarbon transportation and movement force. It is the key factor for hydrocarbon accumulation in Jurassic tight reservoirs.
Junggar Basin / fluid inclusion / overpressure / paleopressure recover / pressure evolution / petroleum geology
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Aplin, A. C., MacLeod, G., Larter, S. R., et al., 1999. Combined Use of Confocal Laser Scanning Microscopy and PVT Simulation for Estimating the Composition and Physical Properties of Petroleum in Fluid Inclusions. Marine and Petroleum Geology, 16(2): 97-110. https://doi.org/10.1016/S0264-8172(98)00079-8
|
|
Burnham, A. K., Sweeney, J. J., 1989. A Chemical Kinetic Model of Vitrinite Maturation and Reflectance. Geochimica et Cosmochimica Acta, 53(10): 2649-2657. https://doi.org/10.1016/0016-7037(89)90136-1
|
|
Gong, Y.J., Zhang, K.H., Zeng, Z.P., et al., 2021. Origin of Overpressure, Vertical Transfer and Hydrocarbon Accumulation of Jurassic in Fukang Sag, Junggar Basin. Earth Science, 46(10): 3588-3600 (in Chinese with English abstract).
|
|
Hao,F., Zou,Y.H., Jiang,J.Q., et al., 2005. Hydrocarbon Generation Dynamics and Hydrocarbon Accumulation Mechanism in Overpressure Basins. Science Press, Beijing, 239-254 (in Chinese).
|
|
He, D.F., Zhang, L., Wu, S.T., et al., 2018. Tectonic Evolution Stages and Features of the Junggar Basin. Oil & Gas Geology, 39(5): 845-861 (in Chinese with English abstract).
|
|
Hunt, J.M., Liu, S.Y., 1990. Generation and Migration of Oil in Abnormal Pressure Fluid Interval. Geology- Geochemistry, 18(6): 13-22 (in Chinese).
|
|
Li, J., Zhao, J. Z., Wei, X. S., et al., 2019. Origin of Abnormal Pressure in the Upper Paleozoic Shale of the Ordos Basin, China. Marine and Petroleum Geology, 110: 162-177. https://doi.org/10.1016/j.marpetgeo.2019.07.016
|
|
Li, P.P., Zou, H.Y., Hao, F., et al., 2006.Restoration of Eroded Strata Thickness in Cretaceous/Jurassic Unconformity in Hinterland of Junggar Basin. Acta Petrolei Sinica, 27(6): 34-38 (in Chinese with English abstract).
|
|
Lindsay, R., Towner, B., 2001. Pore Pressure Influence on Rock Property and Reflectivity Modeling. The Leading Edge, 20(2): 184-187. https://doi.org/10.1190/1.1438906
|
|
Liu, B., 2001.Density and Isochoric Formulae for NaCl-H2O Inclusions with Medium and High Salinity and Their Applications. Geological Review, 47(6): 617-622 (in Chinese with English abstract).
|
|
Liu, H., Hu, X.Q., Liang, J.J., et al., 2018. Characteristics of Jurassic Fault and Its Control Effect on Hydrocarbon Accumulation in the Block 4 in the Middle of the Junggar Basin. Geological Review, 64(6): 1489-1504 (in Chinese with English abstract).
|
|
Liu, H., Jiang, Y.L., Lu, H., et al., 2016. Restoration of Fluid Pressure during Hydrocarbon Accumulation Period and Fluid Inclusion Feature in the Bonan Sag. Earth Science, 41(8): 1384-1394 (in Chinese with English abstract).
|
|
Luo, X. R., Wang, Z. M., Zhang, L. Q., et al., 2007. Overpressure Generation and Evolution in a Compressional Tectonic Setting, the Southern Margin of Junggar Basin, Northwestern China. AAPG Bulletin, 91(8): 1123-1139. https://doi.org/10.1306/02260706035
|
|
Mao, C., Chen, Y., Zhou, Y.Q., et al., 2015. Improved Thermodynamic Simulation Method of Hydrocarbon Fluid Inclusions and Its Application in Oil and Gas Accumulation Research. Journal of Jilin University (Earth Science Edition), 45(5): 1352-1364 (in Chinese with English abstract).
|
|
O’Connor, S., Swarbrick, R., Lahann, R., 2011. Geologically-Driven Pore Fluid Pressure Models and Their Implications for Petroleum Exploration. Introduction to Thematic Set. Geofluids, 11(4): 343-348. https://doi.org/10.1111/j.1468-8123.2011.00354.x
|
|
Qiu, N.S., Wang, X.L., Yang, H.B., et al., 2001. The Characteristics of Temperature Distribution in the Junggar Basin. Scientia Geologica Sinica, 36(3): 350-358 (in Chinese with English abstract).
|
|
Roedder, E., Bodnar, R. J., 1980. Geologic Pressure Determinations from Fluid Inclusion Studies. Annual Review of Earth and Planetary Sciences, 8: 263-301. https://doi.org/10.1146/annurev.ea.08.050180.001403
|
|
Shi, H.G., 2017. Jurassic Reservoir Development in Fukang Deep Sag, Central Junggar Basin. Petroleum Geology & Experiment, 39(2): 238-246 (in Chinese with English abstract).
|
|
Su, A., Chen, H.H., Lei, C., et al., 2014. Application of PVTx Simulation of Fluid Inclusions to Estimate Petroleum Charge Stages and Restore Pressure: Using Pinghu Structural Belt in Xihu Depression as an Example. Geological Science and Technology Information, 33(6): 137-142 (in Chinese with English abstract).
|
|
Su, A., Chen, H. H., Zhao, J. X., et al., 2020. Integrated Fluid Inclusion Analysis and Petrography Constraints on the Petroleum System Evolution of the Central and Southern Biyang Sag, Nanxiang Basin, Eastern China. Marine and Petroleum Geology, 118: 104437. https://doi.org/10.1016/j.marpetgeo.2020.104437
|
|
Thomas, A. V., Pasteris, J. D., Bray, C. J., et al., 1990. H2O-CH4-NaCl-CO2 Inclusions from the Footwall Contact of the Tanco Granitic Pegmatite: Estimates of Internal Pressure and Composition from Microthermometry, Laser Raman Spectroscopy, and Gas Chromatography. Geochim. Cosmochim. Acta, 54(3): 559-573. https://doi.org/10.1016/0016-7037(90)90353-M
|
|
Tian, X.R., Zhang, Y.Y., Zhuo, Q.G., et al., 2019. Tight Oil Charging Characteristics of the Lower Permian Fengcheng Formation in Mahu Sag, Junggar Basin: Evidence from Fluid Inclusions in Alkaline Minerals. Acta Petrolei Sinica, 40(6): 646-659 (in Chinese with English abstract).
|
|
Wang, F.L., Tang, G.M., Chen, R.T., et al., 2021. Thickening Mechanism and Reservoir Formation Model of Bozhong 29-6 Oilfield in Huanghekou Sag, Bohai Bay Basin. Earth Science, 46(9): 3189-3202 (in Chinese with English abstract).
|
|
Wu, H.S., Zheng, M.L., He, W.J., et al., 2017. Formation Pressure Anomalies and Controlling Factors in Central Junggar Basin. Oil & Gas Geology, 38(6): 1135-1146 (in Chinese with English abstract).
|
|
Xu, W.L., Liu, R., Wen, H.G., et al., 2017. Diagenesis and Diagenetic Facies of 2nd Member of Lower Juriassic Sangonghe Formation in Fubei Area, Junggar Basin. Geological Bulletin of China, 36(4): 555-564 (in Chinese with English abstract).
|
|
Yang, Z., Zou, C.N., Chen, J.J., et al., 2021. “Exploring Petroleum inside or near the Source Kitchen”: Innovations in Petroleum Geology Theory and Reflections on Hydrocarbon Exploration in Key Fields. Acta Petrolei Sinica, 42(10): 1310-1324 (in Chinese with English abstract).
|
|
Yin, W., Zheng, H.R., 2009. Hydrocarbon Accumulation Stages and Exploration Directions in the Central Junggar Basin. Petroleum Geology & Experiment, 31(3): 216-220, 226 (in Chinese with English abstract).
|
|
Zhang, F.Q., Lu, X.S., Zhuo, Q.G., et al., 2020. Genetic Mechanism and Evolution Characteristics of Overpressure in the Lower Play at the Southern Margin of the Junggar Basin, Northwestern China. Oil & Gas Geology, 41(5): 1004-1016 (in Chinese with English abstract).
|
|
Zhang, Y. G., Frantz, J. D., 1987. Determination of the Homogenization Temperatures and Densities of Supercritical Fluids in the System NaCl KCl CaCl2 H2O Using Synthetic Fluid Inclusions. Chemical Geology, 64(3-4): 335-350. https://doi.org/10.1016/0009-2541(87)90012-X
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