daqing oil field
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Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4783
Author(s):  
Lu Niu ◽  
Yuan Gao ◽  
He Huang ◽  
Xing Tian ◽  
Tian Dong ◽  
...  

The Songliao Basin (SLB) is a large terrestrial petroliferous basin located in northeastern China. The Nenjiang Formation represents excellent hydrocarbon source rocks for the Daqing oil field. Previous studies have indicated that the oil shale intervals from the first (K2n1) and second (K2n2) members of the Nenjiang Formation were formed in different depositional settings. In this study, we provide a new high-resolution (1 m interval) record from SK-1s core and compile three sets of published datasets from two drilling holes (Zk3389 and LY-1) and a composite outcrop section. According to the total organic carbon (TOC) chemostratigraphy, we have divided three variation cycles spanning from K2n1 to K2n2 and detected three potential oil shale intervals in the Nenjiang Formation. Combined with the productivity, salinity, and oxygenation proxies, we discuss the paleolimnological environmental changes during deposition of the Nenjiang Formation. Our new and compiled records support the model that excellent preservation conditions were associated with the formation of organic-rich sediments in the K2n1, while the productivity was the major controlling factor for organic matter enrichment in the K2n2.


2018 ◽  
Vol 15 (4) ◽  
pp. 722-743
Author(s):  
Jing-Fu Shan ◽  
Zhi-Peng Lin ◽  
Le Chen ◽  
Bin Zhang ◽  
Shi-Xiang Fang ◽  
...  

2018 ◽  
Vol 33 (02) ◽  
pp. 353-362 ◽  
Author(s):  
Hu Guo ◽  
Yiqiang Li ◽  
Fuyong Wang ◽  
Yuanyuan Gu

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