Pre-salt regional structure and its control for hydrocarbon accumulation in Lower Congo Basin from seismic and gravity data

Chen, Zhaoxi; Qiu, Longjun; Liu, Yalei

doi:10.1016/j.jappgeo.2021.104312

Cited by 4 publications

(2 citation statements)

References 23 publications

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“…(2) The Porjianghaizi Fault in the northern part of the Ordos Basin takes part in controlling sedimentation and gas accumulation (Xu et al, 2018). (3) Basement uplift affected the development of the Lower Congo Basin rift zone and structures in the uplift zone (Chen et al, 2021). Therefore, it is possible to clarify the dynamic setting of a basin by identifying the complex activity processes and modes of basement faults in the basin.…”

Section: Introductionmentioning

confidence: 99%

Basement fault control on the extensional process of a basin: A case study from the Cambrian–Silurian of the Sichuan Basin, South‐west China

et al. 2022

Geological Journal

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The Sichuan Basin, located on the eastern margin of the Tibetan Plateau, is an intracontinental basin that developed in the Yangtze Block. The Cambrian–Silurian strata in this basin have enormous exploration potential in terms of natural gas, but their structural evolution during the Cambrian–Silurian remains controversial. Based on wells, seismic profiles, aeromagnetic data, and previous research results, this study investigated the structures related to the Leshan–Longnvsi palaeo‐uplift and the activity of the Cambrian–Silurian basement faults, revealing the activity of the extensional process during the Cambrian–Silurian. The results of this study were as follows: (1) the flattening of the bottom of the Permian strata in seismic profiles located in the Leshan–Longnvsi palaeo‐uplift revealed a large number of normal faults, grabens, and horsts in the Cambrian–Silurian strata, indicating that the Leshan–Longnvsi palaeo‐uplift was an extensional structure during the Cambrian–Silurian period; (2) balanced cross‐sections and strata isopach maps showed that all seven basement faults in the basin were normal faults during the Cambrian–Silurian; (3) Sichuan Basin was in an extensional setting during the Cambrian–Silurian; (4) seven basement faults controlled the extensional process during the Cambrian–Silurian in the Sichuan Basin.

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Section: Introductionmentioning

confidence: 99%

Basement fault control on the extensional process of a basin: A case study from the Cambrian–Silurian of the Sichuan Basin, South‐west China

et al. 2022

Geological Journal

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“…Gravity flow is a focus of current sedimentology research. With the deepening of research, a large number of studies have been carried out on the formation mechanisms of gravity flow, types of gravity flow, sedimentary structures and other issues (Chen, Fu, et al, 2021b; Chen, Lin, et al, 2021a; Chen, Qiu, & Liu, 2021c; Hou et al, 2019; Liu et al, 2016; Liu, Chen, Wang, et al, 2019b; Liu, Chen, Wen, et al, 2019c; Liu, Xian, Ji, et al, 2019a; Yang et al, 2019; Zhao et al, 2020). The Ordos Basin is one of the oldest continental depression basins where original gravity flow, reservoir oil and gas research has been carried out in China.…”

Section: Introductionmentioning

confidence: 99%

Development characteristics of deepwater gravity flows and tight sandstone reservoir characteristics in Chang 6 in the Huaqing area, Ordos Basin, China

et al. 2022

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The tight sandstone reservoirs have become the focus of today's oil and gas exploration. To clarify the microscopic characteristics of the tight sandstone reservoirs of the Chang 63 deep water gravity flow origin in the Huaqing area, the Chang 63 gravity flow origin reservoirs in the study area are divided into three categories. They are the formation reservoir of sandy clastic flow (FROSF), formation reservoir of muddy debris flow deposits and turbidites (FROMT) and formation reservoir of slides and slumps (FROSS). In this study, core and logging data, thin sections, field emission scanning electron microscopy (FE‐SEM), and mercury intrusion capillary pressure (MICP) were combined to investigate the rock composition and pore‐throat characteristics of tight sandstone reservoirs with different types of gravity flow origins. The reservoir micro‐heterogeneity is also investigated in this paper. The results show that the reservoirs with different gravity flow origins are similar in lithology and are mainly composed of feldspar lithic sandstone and lithic feldspar sandstone. The pore types are mainly intergranular pores and feldspar‐dissolved pores. There are significant differences in the porosity, permeability, microscopic pore‐throat characteristics and microscopic heterogeneity of the reservoirs. From FROSF to FROMT and FROSS, the porosity, permeability, mercury inlet saturation, discharge pressure, median pressure and mercury removal efficiency gradually decrease. The tightness of the reservoir gradually increases. The storage capacity is gradually reduced. The disparity between the throat radius and pore radius gradually increases. The pore‐throat structure becomes more complex, and the microscopic heterogeneity of the reservoir gradually increases.

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Pre-salt regional structure and its control for hydrocarbon accumulation in Lower Congo Basin from seismic and gravity data

Cited by 4 publications

References 23 publications

Basement fault control on the extensional process of a basin: A case study from the Cambrian–Silurian of the Sichuan Basin, South‐west China

Basement fault control on the extensional process of a basin: A case study from the Cambrian–Silurian of the Sichuan Basin, South‐west China

Development characteristics of deepwater gravity flows and tight sandstone reservoir characteristics in Chang 6 in the Huaqing area, Ordos Basin, China

Research on sedimentary facies of Guantao Formation in Shanjiasi area of Dongying depression, China

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