Geochemical characteristics and significances of rearranged hopanes in hydrocarbon source rocks, Songliao Basin, NE China

2015 ◽  
Vol 131 ◽  
pp. 138-149 ◽  
Author(s):  
Lian Jiang ◽  
Min Zhang
Keyword(s):  
Songliao Basin ◽  
Geochemical Characteristics ◽  
Source Rocks ◽  
Ne China ◽  
Hydrocarbon Source Rocks

Depositional environment of the Late Santonian lacustrine source rocks in the Songliao Basin (NE China): Implications from organic geochemical analyses

2018 ◽  
Vol 124 ◽  
pp. 215-227 ◽  
Author(s):  
Xiaoning Tong ◽  
Jianfang Hu ◽  
Dangpeng Xi ◽  
Mengbo Zhu ◽  
Jianzhong Song ◽  
...  
Keyword(s):  
Depositional Environment ◽  
Songliao Basin ◽  
Source Rocks ◽  
Ne China ◽  
Geochemical Analyses

scholarly journals Geochemical characteristics and origin of hydrocarbons in the Mesoproterozoic reservoirs in the Liaoxi Depression, NE China

2019 ◽  
Vol 38 (2) ◽  
pp. 333-347 ◽  
Author(s):  
Youjun Tang ◽  
Meijun Li ◽  
Qiuge Zhu ◽  
Daxiang He ◽  
Xingchao Jiang ◽  
...  
Keyword(s):  
Molecular Marker ◽  
Source Rock ◽  
Middle Jurassic ◽  
Distribution Patterns ◽  
Geochemical Characteristics ◽  
Oil Reservoirs ◽  
Source Rocks ◽  
Ne China ◽  
Normal Alkanes ◽  
Petroleum Generation

Oil reservoirs have been discovered in the Mesoproterozoic strata in the Liaoxi Depression, NE China. In order to determine the source of oil shows of the Mesoproterozoic Gaoyuzhuang Formation and their organic geochemical characteristics, eight source rocks and reservoir cores from the Mesoproterozoic Gaoyuzhuang Formation and four source rocks from the overlying Middle Jurassic Haifanggou Formation were geochemically analysed. The distribution patterns of normal alkanes, acyclic isoprenoids, hopanes, steranes and triaromatic steroids of the Mesoproterozoic hydrocarbons from Well N-1 are consistent with those of source rock extracts from the Mesoproterozoic Gaoyuzhuang Formation in the Well L-1. The molecular marker compositions of source rock extracts from the overlying Middle Jurassic Haifanggou Formation are distinctively different from those of the Mesoproterozoic hydrocarbons. The results suggest that the Mesoproterozoic source rocks have significant petroleum generation potential. The Mesoproterozoic paleo-reservoir may be prospecting exploration targets in the Liaoxi Depression, NE China.

The Geochemical Characteristics of High Quality Hydrocarbon Source Rocks - A Case Study of Hailaer Basin

2013 ◽  
Vol 868 ◽  
pp. 107-112
Author(s):  
Dan Ning Wei ◽  
Gui Lei Wang
Keyword(s):  
Organic Matter ◽  
Oil And Gas ◽  
Geochemical Characteristics ◽  
Source Rocks ◽  
Common Source ◽  
Hydrocarbon Source Rock ◽  
High Quality ◽  
Hydrocarbon Source Rocks ◽  
Study Zone ◽  
Hydrocarbon Expulsion

The distribution of high quality hydrocarbon source rocks plays an important role in the accumulation of oil and gas. As a result, the identification of geochemical characteristics of high quality source rocks is the key to discriminate the distribution of high quality source rocks accurately. By core observation and sample analysis, taking Wuerxun-Beier depression in Hailaer Basin as the target regions, we make accurate discrimination of high quality hydrocarbon source rock developmental characteristics and comparison with common source rocks. The research shows that: (1) the hydrocarbon expulsion efficiency in study zone is high due to the alternating deposits of high quality hydrocarbon source rocks and sandstones. The high quality hydrocarbon source rocks deposited in the reducing environment to strong reducing ones, whereas common rocks deposited in oxidizing environment to weak oxidizing ones. (2) the occurrence of organic matter of high quality hydrocarbon source rocks is mainly in stratified enrichment type. The organic matter develops parallel bedding or basic parallel bedding. However, the distribution of organic matter of common source rocks is porphyritic and heterogeneous, or interrupted lamellar. (3) the hydrocarbon potential of high quality hydrocarbon source rocks is more than ten times that of common source rocks. (4) the content of organic carbon in high quality source rocks is high and the content of chloroform asphalt A is relatively low, which reflects that the hydrocarbon expulsion efficiency of high quality source rocks in the sand-shale interbeds of study zone is high.

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