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Formation and distribution characteristics of Proterozoic–Lower Paleozoic marine giant oil and gas fields worldwide

petroleum Science 2017年第2期14卷 237-260页

作者： Xiao-Ping Liu Zhi-Jun Jin Guo-Ping Bai Ming Guan Jie Liu Qing-Hua Pan Ting Li Yu-Jie Xing State Key Laboratory of petroleum Resources and Prospecting Beijing 102249 China College of Geosciences China University of Petroleum Beijing 102249 China petroleum Exploration and Production Research Institute SINOPEC Beijing 100083 China Exploration and Development Research Institute Petro China Huabei Oilfield Company Renqiu 062552 Hebei China Exploration and Development Research Institute PetroChina Tarim Oilfield Company Korla 841000 Xinjiang China

There are rich oil and gas resources in marine carbonate strata *** most of the oil and gas reserves discovered so far are mainly distributed in Mesozoic,Cenozoic,and upper Paleozoic strata,oil and gas exploration in the Proterozoic–Lower Paleozoic（PLP）strata—the oldest marine strata—has been very *** more clearly understand the oil and gas formation conditions and distributions in the PLP marine carbonate strata,we analyzed and characterized the petroleum geological conditions,oil and gas reservoir types,and their distributions in thirteen giant oil and gas fields *** study reveals the main factors controlling their formation and *** analyses show that the source rocks for these giant oil and gas fields are mainly shale with a great abundance of type I–II organic matter and a high thermal evolution *** reservoirs are mainly gas reservoirs,and the reservoir rocks are dominated by *** reservoir types are mainly karst and reef–shoal bodies with well-developed dissolved pores and cavities,intercrystalline pores,and *** reservoirs arehighly *** burial depth of the reservoirs is highly variable and somewhat negatively correlated to the *** cap rocks are mainly thick evaporites and shales,with the thickness of the cap rocks positively correlated to the oil and gas *** development of high-quality evaporite cap rock is highly favorable for oil and gas *** identified four hydrocarbon generation models,and that the major source rocks have undergone a long period of burial and thermal evolution and are characterized by early and long periods of hydrocarbon *** giant oil and gas fields have diverse types of reservoirs and are mainly distributed in paleo-uplifts,slope zones,and platform margin reef-shoal *** main factors that control their formation and distribution were identified,enabling the prediction of new favorable areas for oil and gas

关键词： Giant oil and gas field Proterozoic and LowerPaleozoic Marine carbonate rocks petroleum geologicalconditions Oil and gas distribution

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