Distribution pattern and main factors controlling hydrocarbon accumulation of global oil and gas-rich deepwater basins

Qu, Hongjun; Zhang, Gongcheng; Chen, Shuo

doi:10.1016/j.jnggs.2018.07.002

Cited by 8 publications

(6 citation statements)

References 12 publications

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“…The three former are distributed with a nearly N-S trend, and the latter two are distributed with a nearly E-W trend. Overall, the distribution pattern of these deepwater basins around the world is "three longitudinal and two latitudinal" (Zhang et al, 2011(Zhang et al, , 2013(Zhang et al, , 2015a(Zhang et al, , 2017a(Zhang et al, , 2019Qu and Zhang, 2017;Fig. 1).…”

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“…Up to now, about 1500 oil and gas fields have been discovered; they are mainly distributed in Brazil, West Africa, the Gulf of Mexico, the west coast of Norway, deepwater basins of the East African continental margin and the deepwater basins around the Arctic Pole. In recent years, 70% of the world"s major oil and gas discoveries have been found in the deepwater areas on both sides of the Atlantic Ocean (Qu and Zhang, 2017;Zhang et al, 2019). From all this, the deepwater oil and gas accumulation theory of the classic passive continental margin (DOGAT) has been formed (Qu and Zhang, 2017).…”

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confidence: 99%

“…In recent years, 70% of the world"s major oil and gas discoveries have been found in the deepwater areas on both sides of the Atlantic Ocean (Qu and Zhang, 2017;Zhang et al, 2019). From all this, the deepwater oil and gas accumulation theory of the classic passive continental margin (DOGAT) has been formed (Qu and Zhang, 2017). The deepwater basins around the Western Pacific and former Neotethys are less explored, and hypotheses of basin formation, hydrocarbon generation and reservoir formation are not completely established, and so this is an international frontier research field.…”

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confidence: 99%

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Petroleum Geology in Deepwater Settings in a Passive Continental Margin of a Marginal Sea: A Case Study from the South China Sea

Zhang

Feng

Yao

et al. 2021

Acta Geologica Sinica (Eng)

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Deepwater oil and gas exploration has become a global hotspot in recent years and the study of the deep waters of marginal seas is an important frontier research area. The South China Sea (SCS) is a typical marginal sea that includes Paleo SCS and New SCS tectonic cycles. The latter includes continental marginal rifting, intercontinental oceanic expansion and oceanic shrinking, which controlled the evolution of basins, and the generation, migration and accumulation of hydrocarbons in the deepwater basins on the continental margin of the northern SCS. In the Paleogene, the basins rifted along the margin of the continent and were filled mainly with sediments in marine-continental transitional environments. In the Neogene-Quaternary, due to thermal subsidence, neritic-abyssal facies sediments from the passive continental margin of the SCS mainly filled the basins. The source rocks include mainly Oligocene coal-bearing deltaic and marine mudstones, which were heated by multiple events with high geothermal temperature and terrestrial heat flow, resulting in the generation of gas and oil. The faults, diapirs and sandstones controlled the migration of hydrocarbons that accumulated principally in a large canyon channel, a continental deepwater fan, and a shelf-margin delta.

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Petroleum Geology in Deepwater Settings in a Passive Continental Margin of a Marginal Sea: A Case Study from the South China Sea

Zhang

Feng

Yao

et al. 2021

Acta Geologica Sinica (Eng)

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“…With a globally increasing demand for energy, the focus of hydrocarbon exploration is gradually changing from shallow to deep marine and lacustrine settings (Pettingill & Weimer, 2002; Qu et al ., 2018; Zhang et al ., 2019). Previous work suggests that the positions of the slope and shelf break affect the distribution of deep‐water sandy reservoirs (Stow & Mayall, 2000; Steel & Olsen, 2002).…”

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Analysis of the geometric characteristics of clinothems and the relationship with shelf‐edge trajectories of thePlio‐Pleistocenecontinental slope in the Qiongdongnan Basin, South China Sea

Liu

Loon

et al. 2022

Sedimentology

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Based on high-quality two-dimensional seismic profiles and well data, the seismic reflection characteristics from the late Pliocene and Pleistocene succession of the Qiongdongnan Basin in the South China Sea have been analysed. The result will help in understanding the sedimentological development of slope areas. Twenty coeval clinothems are recognized and four major clinothem types are distinguished. In addition, three types of shelf-edge trajectories are recognized. The various parameters of the clinothems are analysed quantitatively and the relationships between the various clinothem types are studied in combination with the controlling roles. It is concluded that: (i) the shelf-edge trajectories are related to the type of clinothem; (ii) fluctuations in the relative sea level, in combination with variations in sediment supply, result in different clinothem types and geometric parameters; these parameters show interdependencies; (iii) the alternations of progradation and aggradation of clinothems may provide information of the relative sea level and changes in sediment supply; (iv) some lowstand fans could develop at the foot of the slope in the central-eastern part of the basin when the relative sea level started to fall or began to rise. The results of the present study are consequently significant for further quantitative analyses of the characteristics and development of the continental slope, not only in the Qiongdongnan Basin, but also in other basins.

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“…In recent years, a series of big breakthroughs have been obtained in the deep-water hydrocarbon exploration and many hydrocarbon reservoirs were discovered along the eastern coast of Brazil, West Africa, northwest of Australia, and the Gulf of Mexico. − Therefore, the deep-water area has been a hotspot area of global hydrocarbon exploration and may be one of the important exploration areas in the future. ,,− The South China Sea (SCS) hosts abundant petroleum reserves and the main targets for hydrocarbon are the Paleogene and Neogene. − The deep-water hydrocarbon (including the deep-water petroleum and gas hydrates) exploration in the SCS gets a lot of attention from the Chinese government and is still at an initial stage. ,− A lot of petroleum reservoirs and gas hydrates have been discovered in the deep-water area of the SCS, which suggests that it may contain a large number of hydrocarbon resources. ,,,− …”

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confidence: 99%

Geological Characteristics and Hydrocarbon Potential of the Detachment Basin in the Baiyun Depression, Pearl River Mouth Basin, South China Sea

et al. 2019

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Hydrocarbon exploration in the deep-water area of the South China Sea is increasingly important. However, the Eocene strata, which are the primary source rock in the deep-water area of the Pearl River Mouth basin (PRMB), are poorly understood. This article studied the geological characteristics and hydrocarbon potential of the Eocene source rocks in the Baiyun Depression, which is the biggest and most important depression in the deep-water area of the PRMB. In the Eocene, the Baiyun Depression was an asymmetric rift basin that was controlled by the north-dipping detachment faults. A big freshwater lake existed in the study area and a huge delta developed in the northern gentle slope. The delta source rocks had higher total organic carbon and were greatly controlled by terrigenous organic matter input. They were type III kerogen and were likely to produce gas during maturation. The lacustrine source rocks were widely distributed in the center and south and had a higher hydrogen index (HI). They had both terrigenous and aquatic organic matter inputs. The kerogen was type II to III. They could produce both oil and gas during maturation. The Eocene source rocks were widely distributed in the Baiyun Depression. They had a huge thickness and high organic matter abundance. The organic matter had enough maturity to generate hydrocarbon from 18.5 Ma to the present. Therefore, the Eocene source rocks can provide sufficient hydrocarbon resources for deep-water petroleum accumulations and gas hydrate formations in the deep-water area of the PRMB.

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Distribution pattern and main factors controlling hydrocarbon accumulation of global oil and gas-rich deepwater basins

Cited by 8 publications

References 12 publications

Petroleum Geology in Deepwater Settings in a Passive Continental Margin of a Marginal Sea: A Case Study from the South China Sea

Petroleum Geology in Deepwater Settings in a Passive Continental Margin of a Marginal Sea: A Case Study from the South China Sea

Analysis of the geometric characteristics of clinothems and the relationship with shelf‐edge trajectories of thePlio‐Pleistocenecontinental slope in the Qiongdongnan Basin, South China Sea

Geological Characteristics and Hydrocarbon Potential of the Detachment Basin in the Baiyun Depression, Pearl River Mouth Basin, South China Sea

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