Oil-Gas Source Correlation around Dongdaohaizi Sag for Hydrocarbon Exploration Potential Analysis
doi: 10.14027/j.cnki.cjxb.2017.02.016
- Received Date: 2015-12-31
- Rev Recd Date: 2016-05-03
- Publish Date: 2017-04-10
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Key words:
- reservoir geochemistry /
- oil-source correlation /
- maturity parameters /
- Dongdaohaizi sag /
- Dinan Uplift
Abstract: Geochemistry characteristics of the source rock and oil from Dongdaohaizi Sag are studied, such as carbon isotope, Pr/Ph and sterane relative composition, to analyse the hydrocarbon origin and accumulation.The oil-source correlation revealed that:The oil comes mainly from Permian source rock of Pingdiquan Formation, but in the western and central area of Dinan Uplift, the oil is mixed by materials from carboniferous source rock. The maturity of oil is studied through biomarker parameters and alkylphenanthrene index (MPI), as well as the source rock evolution, which indicated that the oil was generated in different stages of source rock evolution. The source rock of Pingdiquan Formation is mature, but oil generated in the peak period of hydrocarbon generation has not migrated into the structural high, which still lies in the slope region of the sag possibly. As a conclusion, low-amplitude structures or the lithology traps in the slope region of Dongdaohaizi Sag is probably a good choice for exploring the oil generated in the peak period of hydrocarbon generation.
Citation: | ZHANG HuanXu, CHEN ShiJia, YANG DiSheng, MA Jie, GUAN Xin, ZOU XianLi, HUANG Hai. Oil-Gas Source Correlation around Dongdaohaizi Sag for Hydrocarbon Exploration Potential Analysis[J]. Acta Sedimentologica Sinica, 2017, 35(2): 393-404. doi: 10.14027/j.cnki.cjxb.2017.02.016 |