New Model of Granite Buried-Hill Reservoir in PL Oilfield, Bohai Sea, China

Daji Jia (), Xiaomin Zhu, Laiming Song (), Xu Liang, Li Li, Haichen Li and Zhandong Li
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Daji Jia: State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China
Xiaomin Zhu: State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China
Laiming Song: State Key Laboratory of Offshore Oil Exploitation, Beijing 100028, China
Xu Liang: State Key Laboratory of Offshore Oil Exploitation, Beijing 100028, China
Li Li: International Education Exchange Center, Langfang Normal University, Langfang 065000, China
Haichen Li: School of Earth and Space Sciences, Peking University, Beijing 100871, China
Zhandong Li: College of Offshore Oil & Gas Engineering, Northeast Petroleum University, Daqing 163318, China

Energies, 2022, vol. 15, issue 15, 1-15

Abstract: The geological estimated hydrocarbon reserves of the Mesozoic granite buried-hill reservoir in the PL oilfield exceed 200 million tons. During the exploration stage, it was commonly considered that the PL buried-hill reservoir should demonstrate a “layered” edge water reservoir mode, because of weathering and tectonics. However, during a later stage, the formation of water was found at structurally high locations, which does not fit the intuition. Therefore, a suitable model is still lacking. Based on the comprehensive information of thin-section, core plug, well logging, and seismic data, etc., the buried-hill of the PL oilfield was re-divided into three northeast–southwest-trending zones. In this model, the reservoir is layered, with each layer having the characteristics of bottom water and two kinds of horizontal and vertical seepage. This new model fits the field-drilling test very well. These insights can effectively guide the exploration and development practice for this kind of buried-hill.

Keywords: granite; buried-hill; oil and gas reservoir; fracture; stratified reservoir model; reservoir model (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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