Biological Gas Resource and its Exploration Potential in Neogene，Baoshan Basin
Received date: 2008-08-01
Revised date: 2008-08-24
Online published: 2008-10-10
The Yangyi formation (N2y) and Nanlin formation (N1n) of Neogene in Baoshan Basin are lake-fandelta deposition system, and the thickness of dark argillaceous hydrocarbon source rocks is about 700 to 1000 m. Microscope examination, rock pyrolysis and biomarker analysis reveal that hydrocarbon source rocks are mixed type. The source rocks are in the immature stage of thermal evolution. Based on the formation condition of biogas and the distribution of the source rocks, and the calculation of the gas production intensity of N2y2 section, N2y3 section, N2y4 and N1n formation, this paper concludes using the method of hydrocarbon explusion and accumulation coefficient that the total biogas resources is about 21×108m3. The Baiyantun subsag in the west of the basin is favorable for exploration.
Key words： Biological gas; Resource potential; Baoshan Basin; Neogene.
CHEN Yi-cai ;LUO Xiao-ping ;SHEN Zhong-min ;ZHANG Sheng ;CAI Xun-yu ; HU Dong-feng ;CHEN Zhao-quan . Biological Gas Resource and its Exploration Potential in Neogene，Baoshan Basin[J]. Natural Gas Geoscience, 2008 , 19(05) : 618 -622 . DOI: 10.11764/j.issn.1672-1926.2008.05.618
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