Syn-depositional fault control on hydrocarbon migration and accumulation pattern: a case study from Tangbei Area, Bohai
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ORIGINAL PAPER
Syn-depositional fault control on hydrocarbon migration and accumulation pattern: a case study from Tangbei Area, Bohai Bay Basin, NE China Shiqiang Xia 1,2,3 & Nadeem Ahmad 4 & Zhenguo Zhang 1 & Lianfeng Gao 1 & Xinyuan Ji 3 & Yi Zhu 3 Received: 2 September 2019 / Accepted: 25 May 2020 # Saudi Society for Geosciences 2020
Abstract Tangbei Area, a complex syn-depositional fault development area, is located in petroliferous Bohai Bay Basin with abundant petroleum resources in the Paleogene. The way to figure out possible migration pathways and potential accumulation accommodation controlled by syn-depositional faults has become a key issue for predicting favorable reservoirs. Based on seismic volume and wireline logs, we carried out fine seismic interpretation, document the faults and their combinations in plane view and section view, and reveal its influence on hydrocarbon migration and accumulation. The results indicate that fine seismic interpretation in the study area provides the distribution and characteristics of syn-depositional faults generated by regional tectonic activities. In addition, syn-depositional faults play an important influence on basin structure and the pathways and traps for hydrocarbon migration and accumulation. Three types of syn-depositional faults are divided based on their locations. It is found that syn-depositional faults in steep slope zone are much favorable for hydrocarbon migration and accumulation. Syndepositional faults in different depositional periods throughout basin evolution act as pathways for hydrocarbon migration, as well as act as seals, which depend on surrounding lithology associations and sealing or leaking properties through time. Keywords Syn-depositional fault . Hydrocarbon migration and accumulation pattern . Fine seismic interpretation . Bohai Bay Basin
Introduction The analysis of controlling factors on hydrocarbon migration and accumulation in rift basins has long been of great scientific interest in the last few decades (Magoon and Dow 1994;
Lin et al. 2003, 2005; Escalona and Mann 2006; Allen and Allen 2013; Bell et al. 2018). Hydrocarbon migration and accumulation can be influenced by overlapping effects of multiple factors in tectonically active basins (Cong and Zhou 1998; Chen et al. 2006; Deng et al. 2017). However, the
Responsible Editor: François Roure * Shiqiang Xia [email protected]
1
Present address: College of Mining Engineering, North China University of Science and Technology, No.21 Bohai Road, Caofeidian District, Tangshan City, Hebei Province 063210, People’s Republic of China
2
Shandong Key Laboratory of Depositional Mineralization & Sedimentary Minerals, Shandong University of Science and Technology, Qingdao City 266590, Shandong Province, China
3
Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Enrichment Mechanism (Ministry of Education), China University of Geosciences (Beijing), Beijing 100083, China
4
Department of Geological Sciences, Indiana University Bloomington, Bloomington, IN 47405-7000, USA
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