Oil & Gas Potential Characterization and Evaluation of Typical Continental Shale-sandstone in Northern Sichuan Basin

doi:10.11885/j.issn.1674-5086.2021.08.08.01

Abstract

Abstract: The Qianfoya Formation in northern Sichuan Basin is rich in oil & gas resources and it is expecting to exploration and development. On basis of core analysis, logging interpretation and sedimentary microfacies analysis, we analyze the vertical, horizontal and plane distribution characteristics of reservoir, find five types of the continental shale-sandstone oil & gas reservoirs, such as multi-layer tight sandstone oil & gas reservoir, upper shale-lower sand oil & gas reservoir, sand-shale interbedded oil & gas reservoir, shale-clad sand oil & gas reservoir and isolated oil & gas reservoir, evaluate total 44 oil & gas reservoirs in each layer, and select the three favorable oil & gas reservoir A, B, and C in the Qianfoya Formation in the study area. The above results are conducive to the further development of the continental shale oil & gas reservoir geology in China.

Key words: northern Sichuan Basin, continental shale-sandstone reservoir, type of mixed oil and gas reservoir, development potential evaluation, optimal selection of favorable oil & gas area

CLC Number:

TE122

OU Chenghua, LI Hang, SHI Baiqiang, ZHANG Zhiyue, HE Jian. Oil & Gas Potential Characterization and Evaluation of Typical Continental Shale-sandstone in Northern Sichuan Basin[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2023, 45(3): 61-71.

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