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Volume 19 Issue 6
Dec 2008
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Yuanchun ZHANG, Huayao ZOU, Cunwu WANG, Pingping LI. Reserve and Pressure Change of Paleo-oil Reservoir in Puguang Area, Sichuan Basin. Journal of Earth Science, 2008, 19(6): 726-738.
Citation: Yuanchun ZHANG, Huayao ZOU, Cunwu WANG, Pingping LI. Reserve and Pressure Change of Paleo-oil Reservoir in Puguang Area, Sichuan Basin. Journal of Earth Science, 2008, 19(6): 726-738.

Reserve and Pressure Change of Paleo-oil Reservoir in Puguang Area, Sichuan Basin

Funds:

the National Basic Research Program of China 2005CB422105

the National Natural Science Foundation of China 40772089

  • The Puguang (普光) gas field is the largest gas field found in marine carbonates in China. The Feixianguan (飞仙关) and Changxing (长兴) reservoirs are two such reservoirs that had been buried to a depth of about 7 000 m and experienced maximum temperature of up to 220 ℃ before uplift to the present-day depth of 5 000-5 500 m,with present-day thermal maturity between 2.0% and 3.0% equivalent vitrinite reflectance (Ro). Bitumen staining is ubiquitous throughout the Feixianguan and Changxing formations,with the greatest concentrations in zones with the highest porosity and permeability,suggesting that the solid bitumen is the result of in-situ cracking of oil. According to the distribution of bitumen in the core,the paleo-oil boundary can be approximately determined. The paleo-oil resource is calculated to be about (0.61-0.92) × 10^9 t (average 0.76 × 10^9 t),and the cracked gas volume is about (380.80-595.80) × 10^9 m^3 (average 488.30 × 10^9 m^3); at least 58.74% of cracked gas is preserved in Puguang gas field. The study area experienced not only the cracking of oil but also thermochemical sulfate reduction,resulting in large quantities of nonhydrocarbon gas,with about 15.2% H2S and 8.3% CO2,together with the structural reconfiguration. During the whole process,the great change of volume and pressure compels the PVTsim modeling software to simulate various factors,such as the cracking of oil,the thermochemical sulfate reduction (TSR) and the tectonic uplift in both isolated and open geological conditions,respectively. The results show that although any one of these factors may induce greater pressure changes in an isolated system than in a closed system,the oil cracking and C3+ involving TSR lead to overpressure during the early stage of gas reservoir. Therefore,the tectonic uplift and the methane-dominated TSR,as well as the semi-open system contribute to the reducing pressure resulting in the current normal formation pressure.

     

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  • Barker, C., 1972. Aquathermal Pressuring: Role of Temperature in Development of Abnormal-Pressure Zones. AAPG Bul-letin, 56: 2068-2071
    Barker, C., 1990. Calculated Volume and Pressure Changes during the Thermal Cracking of Oil to Gas in Reservoirs. AAPG Bulletin, 74: 1254-1261
    Behar, F., Kressmann, S., Rudkiewicz, J. L., et al., 1992. Ex-perimental Simulation in a Confined System and Kinetic Modelling of Kerogen and Oil Cracking. Organic Geo-chemistry, 19: 173-189 doi: 10.1016/0146-6380(92)90035-V
    Behar, F., Vandenbroucke, M., Tang, Y., et al., 1997. Thermal Cracking of Kerogen in Open and Closed Systems: De-termination of Kinetic Parameters and Stoichiometric Co-efficients for Oil and Gas Generation. Organic Geochem-istry, 26(5-6): 321-339 doi: 10.1016/S0146-6380(97)00014-4
    Cai, X. Y., Zhu, Y. M., Huang, R. C., 2006. Geochemical Be-haviors and Origin of Reservoir Bitumen in Puguang Gas Pool. Oil & Gas Geology, 27: 340-347 (in Chinese with English Abstract)
    Dickey, P. A., Cox, W. C., 1977. Oil and Gas in Reservoirs with Subnormal Pressures. AAPG Bulletin, 61: 2134-2142
    Domine, F., Dessort, D., Brevart, O., 1998. Towards a New Method of Geochemical Kinetic Modelling: Implications for the Stability of Crude Oils. Organic Geochemistry, 28(9-10): 597-612 doi: 10.1016/S0146-6380(98)00030-8
    Du, C. G., Hao, F., Zou, H. Y., 2007. Effect of Thermochemical Sulfate Reduction upon Carbonate Gas Reservoir: An Example from the Northeast Sichuan Basin. Acta Ge-ologica Sinica, 81(1): 119-127 (in Chinese with English Abstract)
    Giuliani, G., France-Lanord, C., Cheilletz, A., et al., 2000. Sul-fate Reduction by Organic Matter in Colombian Emerald Deposits: Chemical and Stable Isotope (C, O, H) Evidence. Economic Geology, 95: 1129-1153
    Goldhaber, M. B., Orr, W. L., 1995. Kinetic Controls on Ther-mochemical Sulfate Reduction as a Source of Sedimentary H2S. In: Vairavamurthy, M. A., Schoonen, M. A. A., eds., Geochemical Transformations of Sedimentary Sulfur. ACS Symposium Series 612, American Chemical Society, Washington DC. 412-425
    Gretener, P. E., 1976. Pore Pressure: Fundamentals, General Ramifications and Implications for Structural Geology. AAPG Continuing Education Course Note Series, 4: 87
    Guo, C. P., 2006. Characteristic of Oil Cracking Experiment and Study of Hydrocarbon Dynamics: [Dissertation]. Daqing Petroleum Institute, Daqing (in Chinese with Eng-lish Abstract)
    Hao, F., 2005. Kinetics of Hydrocarbon Generation and Mechanisms of Petroleum Accumulation in Overpressured Basin. Science Press, Beijing. 19-27 (in Chinese with English Abstract)
    Hao, F., Guo, T. L., Zhu, Y. M., et al., 2008. Evidence for Mul-tiple Stages of Oil Cracking and Thermochemical Sulfate Reduction in the Puguang Gas Field, Sichuan Basin, China. AAPG Bulletin, 92: 611-637 doi: 10.1306/01210807090
    He, J., Kang, Y. L., Liu, D. W., 2005. The Stress Sensitivity Research on Porous and Fractured Porous Carbonate Res-ervoirs. Drilling and Production Technology, 28: 84-86
    Heydari, E., 1997. The Role of Burial Diagenesis in Hydrocar-bon Destruction and H2S Accumulation, Upper Jurassic Smackover Formation, Black Creek Field, Mississippi. AAPG Bulletin, 81: 26-45
    Heydari, E., Moore, C. H., 1989, Burial Diagenesis and Ther-mochemical Sulfate Reduction, Smackover Formation, Southeastern Mississippi Salt Basin. Geology, 17: 1080-1084 doi: 10.1130/0091-7613(1989)017<1080:BDATSR>2.3.CO;2
    Hill, R. J., Tang, Y. C., Kaplan, I. R., 2003. Insights into Oil Cracking Based on Laboratory Experiments. Organic Geochemistry, 34(12): 1651-1672 doi: 10.1016/S0146-6380(03)00173-6
    Jin, Z. J., Cai, L. G., 2007. Inheritance and Innovation of Ma-rine Petroleum Geological Theory in China. Acta Ge-ologica Sinica, 81(8): 1017-1024 (in Chinese with Eng-lish Abstract)
    Jin, Z. J., Long, S. X., Zhou, Y., et al., 2006. A Study on the Distribution of Saline-Deposit in Southern China. Oil & Gas Geology, 27: 571-583 (in Chinese with English Ab-stract)
    Law, B. E., Dickinson, W. W., 1985. Conceptual Model for Origin of Abnormally Pressured Gas Accumulations in Low Permeability Reservoirs. AAPG Bulletin, 69: 1295-1304
    Leventhal, J. S., 1990. Organic Matter and Thermochemical Sulfate Reduction in the Viburnum Trend, Southeast Mis-souri. Economic Geology, 85: 622-632 doi: 10.2113/gsecongeo.85.3.622
    Li, Y. J., Chen, Y. C., Huang, J. Q., et al., 1999. Formation of Underpressured Fluid Compartments and Its Relation with Shallow Oil and Gas Accumulations: Hongnan-Hongxi Area, Turpan-Hami Basin Area. Journal of Southwest Pe-troleum Institute, 21: 6-9 (in Chinese with English Ab-stract)
    Louden, L. R., 1972. Origin and Maintenance of Abnormal Pressures. In: Third Symposium on Abnormal Subsurface Pore Pressure, Preprints. Society of Petroleum Engineers of AIME, No: 23-27
    Ma, Y. S., Guo, X. S., Guo, T. L., et al., 2007. The Puguang Gas Field: New Giant Discovery in the Mature Sichuan Basin, Southwest China. AAPG Bulletin, 91: 627-643 doi: 10.1306/11030606062
    Ma, Y. S., Zhang, S. C., Guo, T. L., et al., 2008. Petroleum Ge-ology of the Puguang Sour Gas Field in the Sichuan Basin, SW China. Marine and Petroleum Geology, 25: 357-370 doi: 10.1016/j.marpetgeo.2008.01.010
    Machel, H. G., 1987. Saddle Dolomite as a By-Product of Chemical Compaction and Thermochemical Sulfate Re-duction. Geology, 15: 936-940 doi: 10.1130/0091-7613(1987)15<936:SDAABO>2.0.CO;2
    Machel, H. G., 2001. Bacterial and Thermochemical Sulfate Reduction in Diagenetic Settings: Old and New Insights. Sedimentary Geology, 140(1-2): 143-175 doi: 10.1016/S0037-0738(00)00176-7
    Neuzil, C. E., Pollock, D. W., 1983. Erosional Unloading and Fluid Pressures in Hydraulically "Tight" Rocks. Journal of Geology, 91(2): 179-193 doi: 10.1086/628755
    Qin, J. Z., Fu, X. D., Liu, X. Z., 2007. Solid Bitumens in the Marine Carbonate Reservoir of Gas Field in the Northeast Area of the Sichuan Basin. Acta Geologica Sinica, 81: 1065-1071 (in Chinese with English Abstract)
    Russell, W. L., 1972. Pressure-Depth Relations in Appalachian Region. AAPG Bulletin, 56: 528-536
    Schenk, H. J., di Primio, R., Horsfield, B., 1997. The Conver-sion of Oil into Gas in Petroleum Reservoirs. Part I: Comparative Kinetic Investigation of Gas Generation from Crude Oils of Lacustrine, Marine and Fluviodeltaic Origin by Programmed Temperature Closed-System Py-rolysis. Organic Geochemistry, 26(7-8): 467-481
    Shaw, K., Willis, C., 1981. Pembina's High-Pressure Sour Reefs Need Special Drill in Procedures. Oil & Gas Jour-nal, 79: 59-72
    Shi, Y., Wang, C., 1988. Generation of High Pore Pressures in Accretionary Prisms: Inferences from the Barbados Sub-duction Complex. Journal of Geophysical Research, 93: 8893-8910 doi: 10.1029/JB093iB08p08893
    Tian, H., Xiao, X. M., Ronald, W. T., et al., 2008. New Insights into the Volume and Pressure Changes during the Thermal Cracking of Oil to Gas in Reservoirs: Implications for the In-Situ Accumulation of Gas Cracked from Oils. AAPG Bulletin, 92(2): 181-200 doi: 10.1306/09210706140
    Vandenbroucke, M., Behar, F., Rudkiewicz, J. L., 1999. Ki-netic Modelling of Petroleum Formation and Cracking: mplications from the High Pressure/High Temperature Elgin Field (UK, North Sea). Organic Geochemistry, 30(9): 1105-1125 doi: 10.1016/S0146-6380(99)00089-3
    Wang, B. J., Bao, C., Lou, Z., et al., 1989. Formation and De-velopment of the Sichuan Basin. In: Zhu, X., ed., Chinese Sedimentary Basin. Elsevier, Amsterdam. 147-164
    Wang, C. W., 2008. Study on the Overpressure Development, Evolvement and Origin Mechanism in the Carbonate Res-ervoir of the Northeast Area, Sichuan Basin: [Dissertation]. China University of Geosciences, Wuhan. 58-59 (in Chi-nese with English Abstract)
    Wang, H. Y., Yang, T. Y., 1986. Thermo-evolution of Hydro-carbon by Experimental Simulation. The Symposia of Or-ganic Geochemistry. Science Press, Beijing. 159-167 (in Chinese)
    Waples, D. W., 2000. The Kinetics of in Reservoir Oil De-struction and Gas Formation: Constraints from Experi-mental and Empirical Data, and from Thermdynamics. Organic Geochemistry, 31: 553-575 doi: 10.1016/S0146-6380(00)00023-1
    Winnock, E., Pontalier, Y., 1970. Lacq Gas Field, France. In: Halbouty, M. T., ed., Geology of Giant Petroleum Field. AAPG Memoir, 14: 370-387
    Worden, R. H., Smalley, P. C., Cross, M. M., 2000. The Influ-ence of Rock Fabric and Mineralogy on Thermochemical Sulfate Reduction: Khuff Formation, Abu Dhabi. Journal of Sedimentary Research, 70: 1210-1221 doi: 10.1306/110499701210
    Worden, R. H., Smalley, P. C., Oxtoby, N. H., 1996. The Ef-fects of Thermochemical Sulfate Reduction upon Forma-tion Water Salinity and Oxygen Isotopes in Carbonate Gas Reservoirs. Geochimica et Cosmochimica Acta, 60(20): 3925-3931 doi: 10.1016/0016-7037(96)00216-5
    Xiomara, M. M., Eric, W. M., 1996. Microfractures due to Overpressures Caused by Thermal Cracking in Well-Sealed Upper Devonian Reservoirs, Deep Alberta Basin. AAPG Bulletin, 80: 570-588
    Zhang, T. W., Ellis, G. S., Wang, K. S., et al., 2007. Effect of Hydrocarbon Type on Thermochemical Sulfate Reduction. Organic Geochemistry, 38: 897-910 doi: 10.1016/j.orggeochem.2007.02.004
    Zhao, W. Z., Wang, Z. C., Wang, Y. G., 2006. Formation Mechanism of Highly Effective Gas Pools in the Feixian-guan Formation in the NE Sichuan Basin. Geological Re-view, 52(5): 708-719 (in Chinese with English Abstract)
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