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Influence of the Moho surface distribution on the oil and gas basins in china seas and adjacent areas

Acta Oceanologica Sinica 2023年第3期42卷 167-188页

作者： Yimi Zhang Wanyin Wang Linzhi Li Xingang Luo Dingding Wang Tao He Feifei Zhang Jing Ma Institute of Gravity and Magnetic Technology School of Geology Engineering and GeomaticsKey Laboratory of Western China’s Mineral Resources and Geological Engineering of Ministry of EducationChang’an UniversityXi’an 710054China china National Offshore Oil Corporation(CNOOC)Research Institute Co. Ltd.Beijing 100028China National Engineering Research Center of Offshore Oil and Gas Exploration Beijing 100028China Key Laboratory of Marine Geology and Environment Chinese Academy of SciencesQingdao 266071China Department of Earth Sciences Memorial University of NewfoundlandSt.John’sNewfoundland AlB3X5Canada Qingdao Institute of Marine Geology China Geological SurveyQingdao 266071China

Owing to the strategic significance of national oil and gas resources,their exploration and production must be prioritized in *** and gas resources are closely related to deep crustal structures,and Moho characteristics influence oil and gas ***,it is important to study the relationship between the variation of the Moho surface depth undulation and hydrocarbon basins for the future prediction of their *** Moho depth in the study area can be inverted using the Moho depth control information,the Moho gravity anomaly,and the variable density distribution calculated by the infinite *** on these results,the influences of Moho characteristics on petroleum basins were *** found that the Moho surface depth undulation deviation and crustal thickness undulation deviation in the hydrocarbon-rich basins are large,and the horizontal gradient deviation of the Moho surface shows a positive linear relationship with oil and gas resources in the *** oil-bearing mechanism of the Moho basin is further discussed *** Moho uplift area and the slope zone correspond to the distribution of oil and gas *** tensile stress produced by the Moho uplift can form tensile fractures or cause tensile fractures on the surface,further developing into a fault or depression basin that receives *** organic matter can become oil and natural gas under suitable chemical and structural *** the action of groundwater or other dynamic forces,oil and natural gas are gradually transported to the uplift or the buried hill in the depression zone,and oil and gas fields are formed under the condition of good *** research results can provide new insights into the relationship between deep structures and oil and gas basins as well as assist in the strategic planning of oil and gas exploration activities.

关键词： china seas and adjacent areas Moho surface oil and gas basins

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Influence of lithospheric thickness distribution on oil and gas basins,china seas and adjacent areas

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Acta Oceanologica Sinica 2024年第4期43卷 1-14页

作者： Jing Ma Wanyin Wang Hermann Zeyen Yimi Zhang Zhongsheng Li Tao He Dingding Wang School of Geology Engineering and Geomatics Key Laboratory of Western China’s Mineral Resources and Geological Engineering of Ministry of EducationChang’an UniversityXi’an 710054China UMR8148 GEOPS CNRS/UniversitéParis-SaclayDépartement des Sciences de la TerreBât.50491405France CNOOC Research Institute Co. Ltd.Beijing 100027China Qingdao Institute of marine geology Qingdao 266071China Department of Earth Sciences Memorial University of NewfoundlandSt.John’sNewfoundland AlB3X5Canada University of Naples Federico Ⅱ Department of Earth SciencesNaples80138Italy

The distribution of oil and gas resources is intricately connected to the underlying structure of the ***,investigating the characteristics of lithospheric thickness and its correlation with oil and gas basins is highly *** research utilizes recently enhanced geological–geophysical data,including topographic,geoid,rock layer thickness,variable rock layer density,and interface depth *** the principles of lithospheric isostasy and heat conduction,we compute the laterally varying lithospheric thickness in the china seas and adjacent *** these results,two pivotal parameters for different types of oil and gas basins were statistically analyzed:the minimum lithospheric thickness and the relative fluctuation in lithospheric thickness.A semiquantitative analysis was used to explore the connection between these parameters and the hydrocarbon abundance within the oil and gas *** study unveils distinct variations in lithospheric thickness among basins,with oil and gas rich basins exhibiting a thicker lithosphere in the superimposed basins of central china and a thinner lithosphere in the rift basins of eastern ***,the relative fluctuations in lithospheric thickness in basins demonstrate significant disparities:basins rich in oil and gas often exhibit greater thickness ***,in the offshore basins of china,a conspicuous negative linear correlation is observed between the minimum lithospheric thickness and the relative fluctuation in lithospheric *** study posits that deep-seated thermal upwelling results in lithospheric undulations and extensional thinning in oil and gas ***,sustained deep-seated heat influences sedimentary materials in basins,creating favorable conditions for oil and gas *** insights derived from this study contribute to a quantitative understanding of the intricate relationships between deep lithospheric structures and oil and gas basins.

关键词： china seas and adjacent areas lithospheric thickness oil and gas basins

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