Tectonic Evolution and Geological Characteristics of Hydrocarbon Reservoirs in Marine Mesozoic–Paleozoic Strata in the South Yellow Sea Basin

Yuan, Yong; Chen, Jianwen; Zhang, Yuxi; Liang, Jie; Yinguo, Zhang; Zhang, Penghui

doi:10.1007/s11802-018-3583-x

Cited by 6 publications

(2 citation statements)

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“…Exploration practices and research results indicate that the SYS is rich in hydrocarbons and other potential resources [1][2][3][4][5][6][7][8][9][10][11][12][13]. However, since the pre-Sinian period, the Mesozoic-Paleozoic marine sedimentary basin of the SYS has In recent years, several studies have utilized seismic and drilling data to investigate geological structures, sedimentary layers, and oil and gas potential [2][3][4][5][6][7]10,11,16,17,[21][22][23][24][25][26][27][28]. However, the Paleozoic can suffer from low reflectivity in deep seismic imaging due to the strong shielding effect of the carbonate's powerful reflection interface in a seismic profile, the weak reflection amplitude of the target strata, the low signal-to-noise ratio, and the poor lateral resolution.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, several studies have utilized seismic and drilling data to investigate geological structures, sedimentary layers, and oil and gas potential [2][3][4][5][6][7]10,11,16,17,[21][22][23][24][25][26][27][28]. However, the Paleozoic can suffer from low reflectivity in deep seismic imaging due to the strong shielding effect of the carbonate's powerful reflection interface in a seismic profile, the weak reflection amplitude of the target strata, the low signal-to-noise ratio, and the poor lateral resolution.…”

Section: Introductionmentioning

confidence: 99%

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Research on the Tectonic Characteristics and Hydrocarbon Prospects in the Northern Area of the South Yellow Sea Based on Gravity and Magnetic Data

Yao

et al. 2023

Minerals

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To further explore the geological structure and the Mesozoic–Paleozoic hydrocarbon prospects in the northern area of the South Yellow Sea (SYS), multiple geological and geophysical data were systematically gathered and compiled, including gravity and magnetic data, seismic surveys, drilling data, and previous research results. The characteristics and genesis of the gravity and magnetic anomalies are examined. This study employs residual gravity anomalies and multiple edge detection methods to identify fault lineament structures and assess the tectonic framework. Moreover, the study utilizes 2.5D gravity-seismic joint modellings and regression analysis to estimate the basement depth. Additionally, the study examines the basement characteristics and discusses the thickness of the Mesozoic–Paleozoic strata. Finally, the study further identifies prospects for hydrocarbons in the Mesozoic–Paleozoic. Our findings show that the faults are incredibly abundant and that the intensity of fault activity weakens gradually from NW to SE. Specifically, NE (NEE) trending faults are interlaced and cut off by NW (NWW), near-EW, and near-SN trending secondary faults, which form an en-echelon composite faults system with a dominant NE (NEE) orientation. Thick Mesozoic–Paleozoic strata are preserved, but we observe distinct variations in basement characteristics and the pre-Cenozoic structural deformation along the N-S direction. Therefore, the Northern Basin of SYS (NBSYS) and the Middle Uplift of SYS (MUSYS) are characterized by alternating sags and bulges in the S-N direction and in the E-W direction, respectively, forming a chessboard tectonic framework. Considering the oil and gas accumulation model, we identify three target hydrocarbon prospects in the NBSYS and two favorable hydrocarbon prospects in the MUSYS.

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