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- W2388893343 abstract "Reef is organic construction of carbonate rock generating from reef-building organisms,and mean while reef is significant target in oil and gas exploration.In the world scale,there are more than three hundred oil and gas fields which contain huge a mount of petroleum.Reef is famous for large a mount of production and reserve.In South China Sea(SCS),based on studies during the last past fifty years,reef is convinced important exploration targets.There are lots of reef oil and gas fields which have been detected in there.Xisha offshore,lying in the northern of SCS, there initially experienced a rifting stage with post-rift relaxation during the Tertiary,the basin filled with shallow continental deposits which conclude both lacustrine and shallow marine sediments.The post-rift phase of evolution shows that Xisha offshore had gradually drowning of a carbonate platform,slope deposits,including reef and beach in vast area.The former studies have demonstrated an appropriate construction environment for reef since early Miocene,so it extremely developed on a large scale.Therefore,the studies of reef contain a significance meaning for exploration and economic. Based on the seismic data,the geophysical features are illustrated by the reality examples.The seismic data used in this paper are acquired by China National Petroleum Corporation from the past several years,including 2D and 3D seismic data,and these data almost fully covered the whole area of Xisha offshore.The seismic profile quality is different with different areas and years,most of which are 2D multi-channel data and the acquisition density arranges from 4×8 km to 16×16 km.The geophysical corresponding characteristics of reef are synthetically analyzed.First, the seismic reflection characteristics arc introduced,including mound seismic reflection configuration,top interface's continuous reflection and strong amplitude,weakening continuous of bottom interlace,unorganized internal reflection,lateral onlap,and draping overlying strata,Second,four geophysical characteristics are illustrated including high compression wave velocity,high compression wave impedance,none obvious abnormal gravity and abnormal low magnitude,Last,the hydrocarbon geological condition is analyzed,and the conclusion has been derived that this area is a good hydrocarbon prospect and important exploration target of deepwater in future." @default.
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- W2388893343 date "2011-01-01" @default.
- W2388893343 modified "2023-09-27" @default.
- W2388893343 title "Geophysical features and hydrocarbon exploration prospectin of eeef in Xisha offshore" @default.
- W2388893343 hasPublicationYear "2011" @default.
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