Origin and reservoirs characterization of lacustrine carbonate in the Eocene Dongying Depression, Bohai Bay Basin, East China

2016 ◽  
Vol 52 (5) ◽  
pp. 808-827 ◽  
Author(s):  
Yongqiang Yang ◽  
Longwei Qiu ◽  
Kuanhong Yu
Keyword(s):  
East China ◽  
Bohai Bay ◽  
Bohai Bay Basin ◽  
Dongying Depression ◽  
Lacustrine Carbonate

Characterization of lacustrine carbonate reservoirs in the Eocene Sikou Sag, Bohai Bay Basin, East China

2016 ◽  
Vol 32 (1) ◽  
pp. 75-93 ◽  
Author(s):  
Yongqiang Yang ◽  
Longwei Qiu ◽  
Jay M. Gregg ◽  
Jim Puckette ◽  
Kuiyuan Liu
Keyword(s):  
Carbonate Reservoirs ◽  
East China ◽  
Bohai Bay ◽  
Bohai Bay Basin ◽  
Lacustrine Carbonate

scholarly journals Thermal Maturation Regime Revisited in the Dongying Depression, Bohai Bay Basin, East China

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-17
Author(s):  
Haiping Huang ◽  
Hong Zhang ◽  
Zheng Li ◽  
Mei Liu
Keyword(s):  
Organic Geochemistry ◽  
Vitrinite Reflectance ◽  
Source Rocks ◽  
East China ◽  
Burial Depth ◽  
Bohai Bay ◽  
Hydrocarbon Generation ◽  
Bohai Bay Basin ◽  
Dongying Depression ◽  
Hydrocarbon Maturation

To the accurate reconstruction of the hydrocarbon generation history in the Dongying Depression, Bohai Bay Basin, East China, core samples of the Eocene Shahejie Formation from 3 shale oil boreholes were analyzed using organic petrology and organic geochemistry methods. The shales are enriched in organic matter with good to excellent hydrocarbon generation potential. The maturity indicated by measured vitrinite reflectance (%Ro) falls in the range of 0.5–0.9% and increases with burial depth in each well. Changes in biomarker and aromatic hydrocarbon isomer distributions and biomarker concentrations are also unequivocally correlated with the thermal maturity of the source rocks. Maturity/depth relationships for hopanes, steranes, and aromatic hydrocarbons, constructed from core data indicate different well locations, have different thermal regimes. A systematic variability of maturity with geographical position along the depression has been illustrated, which is a dependence on the distance to the Tanlu Fault. Higher thermal gradient at the southern side of the Dongying Depression results in the same maturity level at shallower depth compared to the northern side. The significant regional thermal regime change from south to north in the Dongying Depression may exert an important impact on the timing of hydrocarbon maturation and expulsion at different locations. Different exploration strategies should be employed accordingly.

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