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Integrated gravity and magnetic study on patterns of petroleum basin occurrence in the China seas and adjacent areas

引用

Acta Oceanologica Sinica 2023年第3期42卷 201-214页

作者： Tao He Wanyin Wang Zhizhao Bai Xingang Luo Jing Ma Yimi Zhang Institute of Gravity and Magnetic Technology Key Laboratory of Western China’s Mineral Resources and Geological Engineering of Ministry of EducationSchool of Geology Engineering and GeomaticsChang’an UniversityXi’an 710054China National Engineering Research Center of Offshore Oil and Gas Exploration Beijing 100028China Key Laboratory of Marine Geology and Environment Chinese Academy of SciencesQingdao 266071China China National Offshore Oil Corporation(CNOOC)Research Institute Co. Ltd.Beijing 100027China Department of Earth Sciences Memorial University of NewfoundlandSt.John’s A1B 3X5Canada

The China seas and adjacent areas contain numerous petroleum *** of the main challenges for future oil and gas exploration is to identify the inherent patterns of petroleum basin *** formation and evolution of petroleum basins along with the migration and accumulation of oil and gas are often closely related to the tectonic *** gravity and magnetic fields with high lateral resolution and wide coverage provide important data for regional tectonic *** on the gravity data in the Global Satellite Gravity Anomaly Database(V31.1)and magnetic data from the Earth Magnetic Anomaly Grid(2-arc-minute resolution)(V2),this study uses integrated gravity and magnetic field technique to obtain integrated gravity and magnetic field result for the China seas and adjacent areas,and then adopts the normalized vertical derivative of the total horizontal derivative technique to conduct ***,it identifies the relationship between the partition characteristics and tectonics as well as the patterns of petroleum basin *** research shows that the partition of gravity and magnetic field integrated result has a good correlation with the Neo-Cathaysian tectonic system and tectonic *** petroleum basins are characterized according to three blocks arranged from north to south and four zones arranged from east to *** north-south block structure causes the uneven distribution of oil and gas resources in the mainland area and the differences in the hydrocarbon-bearing *** basins are more abundant in the north than in the *** ages of the main oil-and gas-bearing strata are“Paleozoic–Mesozoic,Paleozoic–Mesozoic–Cenozoic,and Paleozoic–Mesozoic”,in order from north to *** difference in the overall type of oil and gas resources in all basins is controlled by the east–west *** east to west,the oil and gas resource type exhibits a wave-like pattern of“oil and gas,gas,oil and gas,gas”.The vertical

关键词： China seas petroleum basins integrated gravity and magnetic field technique partition characteristics three blocks four zones

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