Effect of block rotation on fault sealing: An example in Dongpu sag, Bohai Bay basin, China

Chen, Shuping; Xu, Shunshan; Wang, Deren; Tan, Yuming

doi:10.1016/j.marpetgeo.2012.10.002

Cited by 23 publications

(22 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1B and C; Chen et al, 2000;Li et al, 2003). The Lanliao Fault in the east had an extended period of activity, controlling sedimentation for the entire depression and resulting in deposition of the Cenozoic section (Chen et al, 2013;Li et al, 1995). The sag zones were the depocenters of the basin and resulted in deposition of most of the source rocks (Jiao et al, 2014).…”

Section: Geologic Setting and Stratigraphymentioning

confidence: 99%

Shale oil occurring between salt intervals in the Dongpu Depression, Bohai Bay Basin, China

Wang

Sherwood

et al. 2015

International Journal of Coal Geology

View full text Add to dashboard Cite

Section: Geologic Setting and Stratigraphymentioning

confidence: 99%

Shale oil occurring between salt intervals in the Dongpu Depression, Bohai Bay Basin, China

Wang

Sherwood

et al. 2015

International Journal of Coal Geology

View full text Add to dashboard Cite

“…As a Cenozoic extensional rift basin developed on the Paleogene‐Mesozoic sedimentary basement, the Dongpu Depression underwent two evolutionary stages: rifting during the Eocene–Oligocene under NW–SE extension and followed by subsidence and deposition during the Neogene and Quaternary (Chen et al, ; Wang et al, ). These evolution cycles can be divided into five stages, including the initial rifting during E 2 s 4 period, followed by an advanced rifting during E 2 s 3 deposition, post‐rifting from E 2 s 2 to E 2 s 1 periods, rifting termination during E 3 d period, and subsidence from Ng to Quaternary period (R. S. Lu et al, ; Wang et al, ).…”

Section: Geological Settingmentioning

confidence: 99%

“…During the deposition period of E 2 s 1 , the depression was experiencing the second rifting and subsidence cycle (Chen et al, ; R. S. Lu et al, ). But the subsidence intensity is much weaker than the first cycle during the E 2 s 3 deposition (R. S. Lu et al, ).…”

Section: Geological Settingmentioning

confidence: 99%

“…The Dognpu Depression, which covers an area of about 5,300 km 2 , is located in the south-western Bohai Bay Basin, east China (Chang, 2007;Chen et al, 2013;Lyu et al, 2016). The Dongpu Depression is an NNE-trending depression, narrow in the north and broad in the Sag Belt, and Western Slope Belt from east to west (Jiang et al, 2008; R. S. Lu et al, 1993).…”

Section: Tectonics and Stratigraphymentioning

confidence: 99%

“…Tectonic units and hydrocarbon distribution in the Dongpu Depression, Bohai Bay Basin (modified after Chen, Xu, Wang, & Tan, , and Y. L. Jiang, Fang, Liu, Hu, & Xu, ). Showing the location of the Dongpu Depression, and tectonic units, hydrocarbon distribution, and sample wells [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Geochemical characteristics and hydrocarbon generation potential of the first member of Shahejie Formation (E₂s₁) source rocks in the Dongpu Depression, East China

et al. 2018

View full text Add to dashboard Cite

The Dongpu Depression, containing huge amounts of hydrocarbons, is a typical petroliferous province in the Bohai Bay Basin, east China. As one set of the main source rocks, the first member of Shahejie Formation (E2s1) shows huge exploration potential with approximately 0.83 × 108 t resources remaining to be discovered. However, the geochemical characteristics and thermal evolution history of E2s1 source rocks have still not been determined. In this study, the sedimentary features were firstly analysed based on the geological data. Then the organic matter abundance, kerogen type, and thermal maturity of E2s1 source rocks in the present day were evaluated according to the Rock‐Eval pyrolysis, micro‐components of kerogen, total organic carbon (TOC), and vitrinite reflectance analysis. Furthermore, the evolution of thermal history and hydrocarbon generation was determined using the PetroMod procedure. The results show that dark mudstones and salt rocks were well developed in E2s1, which are propitious for organic matter to grow and preserve. E2s1 source rocks contain abundant organic matter and moderate to good generative source rock potential. E2s1 source rocks mainly consist of Type II kerogen and have entered early to maturation stage for hydrocarbon generation. Due to the limited buried depth, E2s1 source rocks only attained lower thermal maturity and generated finite hydrocarbons. The initial rapid subsidence and the second rift after uplift erosion resulted in the higher geo‐temperature at the end of E3d and the present day. Corresponding to the geo‐temperature evolution, there are two stages of hydrocarbon generation for E2s1 source rocks: The first stage was in the late E3d period, and the late stage was from the late Neogene to the present day. Moreover, the hydrocarbon generation rate and quantity of the late stage are much higher than the first stage, indicating the major hydrocarbon generation stage. Due to the limited hydrocarbon generation capacity, oils generated from E2s1 source rocks are low maturity; thus, it cannot migrate for a long distance and only accumulated around the sag belts.

show abstract

Organic matter enrichment mechanism in saline lacustrine basins: A review

Wang

Bai³

et al. 2023

Geological Journal

View full text Add to dashboard Cite

Organic‐rich shale in saline lacustrine basins holds significant importance as a source rock for conventional hydrocarbon exploration and has emerged as a prominent target for unconventional hydrocarbon exploration and development in recent years. Based on saline lacustrine basins, this paper provides a summary of the organic matter enrichment mechanisms in saline lacustrine basins, considering sedimentary characteristics, biological activities, factors for the organic matter enrichment and consumption, and hydrocarbon generation. The implications for these factors are discussed in relation to the distribution prediction of high‐quality lacustrine shale district settings and the exploration and development of shale oil. Saline lacustrine basins undergo distinct evolutionary stages, each corresponding to different sedimentary stages involving carbonate minerals, sulphate minerals, and alkaline minerals. Moreover, these basins exhibit diverse biological types and experience extensive biological activities. The prosperity of organisms and the accumulation of sedimentary organic matter are ensured by halophilic organisms. Organic matter enrichment in saline lacustrine basins is influenced by two main aspects: the primary productivity of organic matter, which is promoted by the proliferation of halophilic organisms, and the efficient preservation of organic matter facilitated by the strong reducing environment resulting from promoted water salinity stratification. The organic matter consumption in saline lacustrine basins involves bacterial sulphate reduction (BSR) in the early stages, thermochemical sulphate reduction (TSR) in the late stages, and dilution of salt minerals with higher depositional rates. of the presence of salt beds and saline minerals positively influences hydrocarbon generation and expulsion in organic‐rich shale within saline lacustrine deposition. Consequently, continental saline lacustrine basins in China offer favourable conditions for the formation of organic‐rich shale and present broad prospects for the exploration of shale oil and gas resources.

show abstract

Effect of block rotation on fault sealing: An example in Dongpu sag, Bohai Bay basin, China

Cited by 23 publications

References 24 publications

Shale oil occurring between salt intervals in the Dongpu Depression, Bohai Bay Basin, China

Shale oil occurring between salt intervals in the Dongpu Depression, Bohai Bay Basin, China

Geochemical characteristics and hydrocarbon generation potential of the first member of Shahejie Formation (E₂s₁) source rocks in the Dongpu Depression, East China

Organic matter enrichment mechanism in saline lacustrine basins: A review

Contact Info

Product

Resources

About

Effect of block rotation on fault sealing: An example in Dongpu sag, Bohai Bay basin, China

Cited by 23 publications

References 24 publications

Shale oil occurring between salt intervals in the Dongpu Depression, Bohai Bay Basin, China

Shale oil occurring between salt intervals in the Dongpu Depression, Bohai Bay Basin, China

Geochemical characteristics and hydrocarbon generation potential of the first member of Shahejie Formation (E2s1) source rocks in the Dongpu Depression, East China

Organic matter enrichment mechanism in saline lacustrine basins: A review

Contact Info

Product

Resources

About

Geochemical characteristics and hydrocarbon generation potential of the first member of Shahejie Formation (E₂s₁) source rocks in the Dongpu Depression, East China