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Petroleum geology and exploration direction of gas province in deepwater area of North Carnarvon Basin, Australia

China Geology 2020年第4期3卷 623-632页

作者： Yang-wei Feng Yan Ren Gong-cheng Zhang Hong-jun Qu School of Geographical Science and Tourism Nanyang Normal UniversityNanyang 473061China Department of Geology Northwest UniversityXi’an 710069China PetroJindian(Beijing)Sci-Tech Co. Ltd.Beijing 100000China CNOOC Research Institute Co. Ltd.Beijing 100028China

North Carnarvon Basin is a gas province with minor oily sweet spots in deepwater area with water depth more than 500 m,which is one of the hot spots of global petroleum exploration for its series of giant hydrocarbon discoveries in recent ***,the degree of oil and gas exploration in deepwater area is still low,and the conditions for oil and gas accumulation are not *** on the current exploration situation and latest database of fields,applying multidisciplinary analysis of hydrocarbon geology,hydrocarbon accumulation elements and its exploration direction of North Carnarvon Basin in deepwater area are *** results show that there are three sets of main source rocks in deepwater area of North Carnarvon Basin,which are Triassic marine shale in Locker formation and delta coal-bearing mudstone with thin carbonaceous mudstone in mungaroo formation,Lower–Middle Jurassic paralic carbargilite and coal measure strata in Athol formation and Murat formation,Cretaceous delta mudstone in Barrow Group and marine shale in Muderong *** source rock samples show gas-prone *** coarse sandstone of delta facies in Middle–Upper Triassic mungaroo formation is the most important reservoir in deepwater area,Lower Cretaceous Barrow Group deep-water gravity flow or underwater fan turbidite sandstone is the secondly main *** Cretaceous marine shale in Muderong formation is most important regional *** mudstone in mungaroo formation is an important interlayer caprock in deepwater *** are two main reservoir accumulation assemblages in deepwater area,one is Triassic structural-unconformity plane reservoir accumulation assemblage of Locker formation to mungaroo formation,and the other is Lower–Middle Jurassic Athol formation and Murat formation–Lower Cretaceous stratigraphic lithology-structural reservoir accumulation assemblage of Barrow Group to Muderong *** are three main control factors of hydrocarbon Ac

关键词： mungaroo formation Barrow Group Oil and gas exploration engineering Exmouth plateau North Carnarvon Basin Australia

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