Fault control on hydrocarbon migration and accumulation in the Tertiary Dongying depression, Bohai Basin, China

Lampe, Carolyn; Song, Guoqi; Cong, Liangzi; Mu, Xing

doi:10.1306/11031109023

Cited by 60 publications

(22 citation statements)

References 15 publications

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“…1a). This depression is a Mesozoic-Cenozoic rift-depression basin within the North China platform (Lampe et al, 2012;Wang Jian et al, 2016). The southern gentle slope belt is an important hydrocarbon accumulation belt of the Dongying depression and constitutes approximately 1/3 of the depression (Fig.…”

Section: Geological Settingmentioning

confidence: 99%

Diagenetic Evolution and Formation Mechanisms of High-Quality Reservoirs under Multiple Diagenetic Environmental Constraints: An Example from the Paleogene Beach-Bar Sandstone Reservoirs in the Dongying Depression, Bohai Bay Basin

Wang

Cao

Song

et al. 2017

Acta Geologica Sinica - English Edition

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The diagenetic environment, diagenetic responses, diagenetic transformation model and formation mechanisms of high‐quality reservoirs (beach‐bar sandstones of the Paleogene fourth member) in the Dongying depression were studied through the analysis of fluid inclusions, thin section and burial evolution history. The diagenetic fluids of the beach‐bar sandstone reservoirs evolved from early high salinity and weak alkalinity to low salinity and strong acidity, late high salinity and strong alkalinity and late low salinity and acidity, which were accompanied by two stages of oil and gas filling. The fluids at the margins of the sandbodies were continuously highly saline and strongly alkaline. The western (eastern) reservoirs experienced early open (closed), middle open, and late closed diagenetic environments during their burial history. The flow pattern was characterized by upwelling during the majority of the diagenesis (in the east, a non‐circulating pattern transitioned into an upwelling current). Due to the evolution of the diagenetic fluids, the diagenetic sequence of the beach‐bar reservoirs was as follows: early weak carbonate cementation; feldspar and carbonate cement dissolution and authigenic quartz cementation; late carbonate and anhydrite cementation, authigenic feldspar cementation, and late quartz dissolution; and late carbonate cementation, feldspar dissolution, and authigenic quartz cementation. The diagenetic strength during these stages varied or was absent altogether in different parts of the reservoirs. Due to the closeness of the diagenetic environment and the flow pattern of the diagenetic fluids, the diagenetic products are variably distributed in the sandstones interbedded with mudstones and in the fault blocks. The evolution of multiple alternating alkaline and acidic diagenetic environments controlled the distribution patterns of the reservoir diagenesis and reservoir space, and the reservoir quality index, RQI, increased gradually from the margins to the centers of the sandstones. The closeness of the diagenetic environment and the flow patterns of the diagenetic fluids controlled the differences in the reservoir properties among the fault blocks. With increasing distance from the oil‐source faults, the RQI values in the west gradually decreased and in the east initially increased and then decreased.

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Section: Geological Settingmentioning

confidence: 99%

Diagenetic Evolution and Formation Mechanisms of High-Quality Reservoirs under Multiple Diagenetic Environmental Constraints: An Example from the Paleogene Beach-Bar Sandstone Reservoirs in the Dongying Depression, Bohai Bay Basin

Wang

Cao

Song

et al. 2017

Acta Geologica Sinica - English Edition

Self Cite

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“…However, since the distribution of the actual geological body in space is extremely complex, no geological model can comprehensively reflect an objective comprising a subsurface geological body of an existing formation. Therefore, two key points should be focused upon: (i) the faults and (ii) the layers, especially in the establishment of a fault system (Lampe et al, 2012).…”

Section: Geological Modelmentioning

confidence: 99%

Simulation of oil–gas migration and accumulation in the East China Sea Continental Shelf Basin: a case study from the Xihu Depression

Jiang

Chen

et al. 2016

Geological Journal

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The oil–gas accumulation process is a tectonic indicator, and the oil–gas trap is generally a result of tectonic movement. In order to explore the law of oil–gas migration and accumulation in the East China Sea Continental Shelf Basin, this paper analyses the dynamic process of hydrocarbon accumulation based on a geological model, taking the Xihu Depression as an example and using the IES PetroMod basin modelling software. Combined with the seismic data and drilling data, the burial history, thermal evolution history and hydrocarbon generation, expulsion and migration history of the Xihu Depression is simulated in this study. The simulation results show that (1) the tectonic framework of the Xihu Depression developed as an inversion structure from an early extensional stage or transtensional faulting stage to a later compressional or transpressional inversion stage; (2) the Pinghu and Huagang formations of the Xihu Depression are still currently at the peak stage of oil–gas generation, and the Xihu Depression is a depression which has abundant hydrocarbon generation and expulsion at a later stage; (3) oil–gas resources vertically migrated to the structural highs from the eastern and western sub‐sags along faults and ultimately accumulated in favourable traps, which developed a migration pattern of interbedded sandstone–fault–sandstone like an upward ‘staircase’. In particular, faults and the potential energy state played an important role in hydrocarbon migration of the Xihu Depression, which has a guiding significance for understanding hydrocarbon migration and accumulation law and reducing the risk in oil–gas exploration in the East China Sea Continental Shelf Basin. Copyright © 2016 John Wiley & Sons, Ltd.

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“…Some studies also have attempted to interpret the distribution and controls of subtle reservoirs by using (1) source rocks (Hu 2010;Jiang et al 2014), (2) sedimentary facies (Zou et al 2005), (3) the relationship between porosity and fluid potential (Li and Pang 2004), (4) normal faults and microfractures as conduit systems for hydrocarbon reservoirs of conventional and subtle traps (Losh 1998;Losh et al 1999;Li et al 2010;Lampe et al 2012), and (5) faults controlling hydrocarbon migration and accumulation in a continental rift basin (Mu 2012;Wei and Su 2015). Some progress has been made in understanding the conditions of hydrocarbon migration and accumulation in subtle traps, and the distribution and controls of subtle reservoirs within the sequence stratigraphic framework in continental rift basins, such as Dongying Depression (Li and Pang 2004;Feng et al 2005;Pang et al 2005;Guo et al 2010Guo et al , 2012Guo et al , 2014.…”

Section: Introductionmentioning

confidence: 99%

Distribution and controls of petroliferous plays in subtle traps within a Paleogene lacustrine sequence stratigraphic framework, Dongying Depression, Bohai Bay Basin, Eastern China

et al. 2019

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The characteristics of petroliferous plays in subtle traps within a sequence stratigraphic framework in the Dongying Depression are investigated in this study. Sand bodies within lowstand systems tracts (LSTs) of sequences, comprising incisedchannel fills, sublacustrine fans, deltas in LSTs, controlled by syndepositional normal faults, and sand bodies within transgressive systems tracts (TSTs) to early highstand systems tracts (HSTs), consisting of beach bars, and turbidites, controlled by the prodelta slope, paleorelief, and syndepositional normal faults, are good subtle reservoirs. Mudstones and shale of deep lake subfacies in TSTs to early HSTs of sequences are source and cap rocks. Abnormal overpressure is the dominant dynamic factor for hydrocarbon migration from source rock to the subtle traps. Normal faults, sand bodies, and unconformities function as conduit systems. Sand bodies distributed in the abnormal overpressure source rocks within LSTs to early HSTs are petroliferous plays in lithologic traps. The petroliferous plays in stratigraphic traps are controlled by unconformities at margins of the Depression.

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Fault control on hydrocarbon migration and accumulation in the Tertiary Dongying depression, Bohai Basin, China

Cited by 60 publications

References 15 publications

Diagenetic Evolution and Formation Mechanisms of High-Quality Reservoirs under Multiple Diagenetic Environmental Constraints: An Example from the Paleogene Beach-Bar Sandstone Reservoirs in the Dongying Depression, Bohai Bay Basin

Diagenetic Evolution and Formation Mechanisms of High-Quality Reservoirs under Multiple Diagenetic Environmental Constraints: An Example from the Paleogene Beach-Bar Sandstone Reservoirs in the Dongying Depression, Bohai Bay Basin

Simulation of oil–gas migration and accumulation in the East China Sea Continental Shelf Basin: a case study from the Xihu Depression

Distribution and controls of petroliferous plays in subtle traps within a Paleogene lacustrine sequence stratigraphic framework, Dongying Depression, Bohai Bay Basin, Eastern China

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