Differential Enrichment of Organic Matter in Saline Lacustrine Source Rocks in a Rift Basin: A Case Study of Paleogene Source Rocks, Dongpu Depression, Bohai Bay Basin

2020 ◽  
Vol 29 (6) ◽  
pp. 4053-4072
Author(s):  
Qifeng Wang ◽  
Fujie Jiang ◽  
Hancheng Ji ◽  
Shu Jiang ◽  
Fangxin Guo ◽  
...  
Keyword(s):  
Organic Matter ◽  
Source Rocks ◽  
Bohai Bay ◽  
Rift Basin ◽  
Bohai Bay Basin ◽  
Dongpu Depression ◽  
Saline Lacustrine

Lower limit of hydrocarbon generation in source rocks: A case study from the Dongpu Depression, Bohai Bay Basin, East China

2019 ◽  
Vol 182 ◽  
pp. 103928 ◽  
Author(s):  
Ling Tang ◽  
Xiongqi Pang ◽  
Yan Song ◽  
Zhenxue Jiang ◽  
Shu Jiang ◽  
...  
Keyword(s):  
Lower Limit ◽  
Source Rocks ◽  
East China ◽  
Bohai Bay ◽  
Hydrocarbon Generation ◽  
Bohai Bay Basin ◽  
Dongpu Depression

Gas Generation Potential and Characteristics of Oil-Prone Shale in the Saline Lacustrine Rifting Basins: A Case Study of the Dongpu Depression, Bohai Bay Basin

2021 ◽  
Vol 35 (3) ◽  
pp. 2192-2208 ◽  
Author(s):  
Pengyuan Zhang ◽  
Fujie Jiang ◽  
Chenxi Zhu ◽  
Renda Huang ◽  
Tao Hu ◽  
...  
Keyword(s):  
Bohai Bay ◽  
Bohai Bay Basin ◽  
Gas Generation ◽  
Dongpu Depression ◽  
Saline Lacustrine

scholarly journals The influences of sedimentary environments on organic matter enrichment in fine-grained rocks of the Paleogene Shahejie formation in Nanpu Sag, Huanghua Depression, Bohai Bay Basin

2021 ◽  
pp. 014459872110310
Author(s):  
Min Li ◽  
Xiongqi Pang ◽  
Guoyong Liu ◽  
Di Chen ◽  
Lingjian Meng ◽  
...  
Keyword(s):  
Organic Matter ◽  
Source Rocks ◽  
Bohai Bay ◽  
Bohai Bay Basin ◽  
Humid Climate ◽  
High Productivity ◽  
Fine Grained ◽  
Huanghua Depression ◽  
Shahejie Formation ◽  
Nanpu Sag

The fine-grained rocks in the Paleogene Shahejie Formation in Nanpu Sag, Huanghua Depression, Bohai Bay Basin, are extremely important source rocks. These Paleogene rocks are mainly subdivided into organic-rich black shale and gray mudstone. The average total organic carbon contents of the shale and mudstone are 11.5 wt.% and 8.4 wt.%, respectively. The average hydrocarbon (HC)-generating potentials (which is equal to the sum of free hydrocarbons (S1) and potential hydrocarbons (S2)) of the shale and mudstone are 39.3 mg HC/g rock and 28.5 mg HC/g rock, respectively, with mean vitrinite reflectance values of 0.82% and 0.81%, respectively. The higher abundance of organic matter in the shale than in the mudstone is due mainly to paleoenvironmental differences. The chemical index of alteration values and Na/Al ratios reveal a warm and humid climate during shale deposition and a cold and dry climate during mudstone deposition. The biologically derived Ba and Ba/Al ratios indicate high productivity in both the shale and mudstone, with relatively low productivity in the shale. The shale formed in fresh to brackish water, whereas the mudstone was deposited in fresh water, with the former having a higher salinity. Compared with the shale, the mudstone underwent higher detrital input, exhibiting higher Si/Al and Ti/Al ratios. Shale deposition was more dysoxic than mudstone deposition. The organic matter enrichment of the shale sediments was controlled mainly by reducing conditions followed by moderate-to-high productivity, which was promoted by a warm and humid climate and salinity stratification. The organic matter enrichment of the mudstone was less than that of the shale and was controlled by relatively oxic conditions.

scholarly journals Methyltrimethyltridecylchromans in Mature Oils from Saline Lacustrine Settings in the Dongpu Depression, Bohai Bay Basin, East China

ACS Omega ◽  
2021 ◽  
Author(s):  
Donglin Zhang ◽  
Youjun Tang ◽  
Hongbo Li ◽  
Tianwu Xu ◽  
Yunxian Zhang ◽  
...  
Keyword(s):  
East China ◽  
Bohai Bay ◽  
Bohai Bay Basin ◽  
Dongpu Depression ◽  
Saline Lacustrine
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