Abstract
The mechanisms of abnormal high pressures are studied in this paper, and it is concluded that the undercompaction, hydrocarbon generation and stratum denudation are obviously effective to fluid pressure buildup. Because of the episodic difference, the hydrocarbon generation and stratum denudation are the main factors influencing oil-gas migration. On the basis of basin evolutionary analysis in the Dongying Sag, it is considered that the undercompaction mainly caused the abnormal pressure before the first denudation by the uplift in Late Paleogene, while hydrocarbon generation was the main factor of abnormal pressure after the denudation. The second denudation occurred in Late Neogene, which changed the pressure field and induced the fluid migration. The development of overpressures is the necessary condition to the formation of lithologic hydrocarbon reservoirs, which have positive correlations to overpressures. According to the fullness of the present reservoirs, the quantitative relations between oil-bearing property and driving forces of reservoir formation were determined, the latter were decided by dynamic source, reservoir capillary pressure, fluid pressure of surrounding rocks and the dynamic attenuation in different conducting systems.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Osborne M J, Swarbrick R E. Mechanisms for generating overpressure in sedimentary basin: A reevaluation. AAPG Bulletin, 1997, 81(6): 1023–1041
Luo, X R, Vasseur G. Contributions of compaction and aquathermal pressuring to geopressure and the influence of environmental conditions. AAPG Bulletin, 1992, 76(10): 1550–1559
Zhang L Y, Liu Q, Zhang C R. Study on the Genetic Relationships Between Hydrocarbon Occurrence and Pools Formation in Dongying Depression (in Chinese). Beijing: Geological Publishing House, 2005. 114–126
Qiu G Q, Ling Y, Fan H H. The characteristics and distribution of abnormal pressure in the Paleogene source rocks of Dongying Sag (in Chinese). Petrol Explor Develop, 2003, 30(3): 71–75
Chilingar G. V, Serebryakov V, Robertson J.O. Origin and Prediction of Abnormal Formation Pressures (in Chinese). Beijing: Petroleum Industry Press, 2004. 92–112
Hao F. Hydrocarbon Generation Kinetics and Reservoir Formation Mechanisms in Overpressure Basin (in Chinese). Beijing: Petroleum Industry Press, 2005. 19–42
Sui F G, Liu Q, Zhang L Y. Diagenetic evolution of source rocks and its significance to hydrocarbon expulsion in Shahejie Formation of Jiyang Depression (in Chinese), Acta Petro Sin, 2007, 28(6): 12–16
Berg R R, Gangi A F. Primary Migration by Oil-Generation Microfracturing in Low-Permeability Source Rocks: Application to the Austin Chalk, Texas. AAPG Bull, 1992, 83(5): 727–756
Xiao H Q, Liu Z, Zhao Y, et al. Characteristics of geotemperature and geopressure fields in the Jiyang Depression and their significance of petroleum geology (in Chinese). Petrol Explor Develop, 2003, 30(3): 68–70
Chen Z H, Zha M. Characteristics of over-pressure system in source rocks of Dongying Depression and its exploration significance (in Chinese). Petrol Geol Oilfield Develop Daqing, 2004, 23(3): 11–13
Schwarzacher W. Cyclostratigrapgy and the Milankovitch Theory. Amsterdam: Elsevier, 1993. 1–382
Schwarzacher W. Repetitions and cycles in stratigraphy. Earth-Sci Rev, 2000, 50(1–2): 51–75
Xu D Y, Yan Z, Qi X F, et al. Study of high-resolution continental cyclic strata: example of Badaowan Formation in Haojiagou, Xinjiang (in Chinese). In: Editorial Committee of the Proceedings of the Third National Stratigraphical Conference of China ed. Proceedings of the Third National Stratigraphical Conference of China. Beijing: Geological Publishing House, 2000. 191–196
Li P L, Pang X Q. Subtle Reservoir Formation in Terrestrial Rift-Subsidence Basin—Take Jiyang Depression as an example (in Chinese). Beijing: Petroleum Industry Press, 2004. 249–254
Zhang S W, Zeng J H, Xiao H Q, et al. Oil-gas filling degree and distribution characteristics of the lithological oil-gas reservoir in the Jiyang Depression (in Chinese). Geol Rev, 2004, 50(4): 365–369
Sui F G. Quantitative study on key control factors for reservoir formation in turbidity sand (in Chinese). Acta Petrol Sin, 26(1): 55–59
Littke R, Baker D R, Leythaeuser D. Microscope and sedimentologic evidence for the generation and migration of hydrocarbons in Toarcian source rocks of different maturities. Org Geochem, 1988, 13(1–3): 549–559
Hunt J M. Generation and migration of petroleum from abnormally pressured fluid Compartments. AAPG Bull, 1990, 74(1): 1–12
Marquez X M, Mountjoy E W. Microfractures due to overpressures caused by thermal cracking in well sealed upper Devonian reservoirs, Deep Alberta basin. AAPG Bull, 1996, 80(4): 571–587
Vernik L, Landis C. Elastic anisotropy of source rocks: Implication for hydrocarbon generation and primary migration. AAPG Bull, 1996, 80(4): 531–544
Wang Z X, Xin Q L. Hydrodynamics of compaction driven flow in the Dongying Depression (in Chinese). Acta Petrol Sin, 1998, 19(40): 21–25
Guan D F, Wang G L, Zhang J G, et al. Theory About the Formation of Basin, Hydrocarbon and Reservoir: From Basin to Reservoir (in Chinese). Beijing: Petroleum Industry Press, 2004. 90–109
Author information
Authors and Affiliations
Corresponding author
About this article
Cite this article
Zhang, S., Zhang, L., Zhang, S. et al. Formation of abnormal high pressure and its application in the study of oil-bearing property of lithologic hydrocarbon reservoirs in the Dongying Sag. Chin. Sci. Bull. 54, 4468–4478 (2009). https://doi.org/10.1007/s11434-009-0200-9
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11434-009-0200-9