The Role of the Aogula Fault in the Migration of Hydrocarbon Along the Sartu, Putaohua, and Gaotaizi Reservoirs and Its Relationship with Accumulation in the Songliao Basin

Xiaomei Li (), Liang Yang, Lidong Sun, Jiajun Liu, Guozheng Li, Zhuang Cai, Bo Hu, Ying Du, Bowei Zhang, Fei Jiang, Jiao Zhang and Qicai Wu
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Xiaomei Li: Exploration and Development Research Institute, Daqing Oilfield Company Ltd., Daqing 163712, China
Liang Yang: Exploration and Development Research Institute, Daqing Oilfield Company Ltd., Daqing 163712, China
Lidong Sun: Exploration and Development Research Institute, Daqing Oilfield Company Ltd., Daqing 163712, China
Jiajun Liu: Exploration and Development Research Institute, Daqing Oilfield Company Ltd., Daqing 163712, China
Guozheng Li: Exploration and Development Research Institute, Daqing Oilfield Company Ltd., Daqing 163712, China
Zhuang Cai: Exploration and Development Research Institute, Daqing Oilfield Company Ltd., Daqing 163712, China
Bo Hu: Exploration and Development Research Institute, Daqing Oilfield Company Ltd., Daqing 163712, China
Ying Du: Exploration and Development Research Institute, Daqing Oilfield Company Ltd., Daqing 163712, China
Bowei Zhang: College of Earth Science, Northeast Petroleum University, Daqing 163318, China
Fei Jiang: College of Earth Science, Northeast Petroleum University, Daqing 163318, China
Jiao Zhang: College of Earth Science, Northeast Petroleum University, Daqing 163318, China
Qicai Wu: College of Earth Science, Northeast Petroleum University, Daqing 163318, China

Energies, 2025, vol. 18, issue 16, 1-15

Abstract: To elucidate hydrocarbon enrichment characteristics within the Sartu (S), Putaohua (P), and Gaotaizi (G) reservoirs near the Aogula Fault in the northern Songliao Basin, this study systematically analyzes the fault’s influence on hydrocarbon migration and accumulation, based on an investigation of migration pathways along fault zones and sandstone bodies. The results demonstrate that, except at its northern terminus, the Aogula Fault terminates hydrocarbon migration within the S reservoir sandstones, thereby promoting hydrocarbon accumulation near the fault zone. This is a primary reason for the prevalence of productive drilling targets in this region. Six vertical diversion zones are identified along the fault trace, uniformly spaced from southwest to northeast. These zones facilitate vertical migration of hydrocarbons from the G and P reservoirs into the overlying S reservoir, accounting for the significantly greater hydrocarbon enrichment observed in the S reservoir compared to the underlying formations. Furthermore, excluding the eastern and western extremities, lateral diversion zones characterize the remainder of the fault. These zones enhance lateral hydrocarbon migration from the southwestern segment towards the northeastern segment, resulting in significantly higher accumulation in the northeastern section relative to the southwestern section.

Keywords: Songliao Basin; Aogula Fault; Sartu; Putaohua; Gaotaizi reservoirs; hydrocarbon migration; control locations; hydrocarbon enrichment (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: 2025
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