中国地质2018，Vol.45Issue(1)：48-58,11.DOI:10.12029/gc20180105
南海北部潮汕坳陷侏罗系沉积特征及对储层的控制作用研究
A study of depositional characteristics of the Jurassic strata in Chaoshan Subbasin, northern South China Sea, and its control on reservoir beds
摘要
Abstract
The Jurassic strata in the Chaoshan sub-basin of northern South China Sea have great potential for oil and gas exploration,and the sedimentary characteristics have obvious effect on the development of the reservoirs.Based on analyzing the latest seismic data of the study area,the authors recognized four typical seismic reflection interfaces and three seismic reflection layers and,according to the result of the sequence interface,figured out the Jurassic distribution and residual thickness.On the basis of the comparative analysis of the transformation of seismic facies-sedimentary facies,the authors determined the sedimentary facies types and distribution characteristics of the Jurassic strata in different periods and reshaped the sedimentary evolution history of the Jurassic sediments in the Chaoshan sub-basin.The study area has mainly developed five sedimentary facies and eight kinds of sedimentary subfacies,and the coastal delta front subfacies and deepwater middle-fan subfacies have controlled the development of high-quality reservoirs of the debris flow sandstone separately.In addition,the turbid sandstone reservoir is mainly controlled by the sediment supply,the more closer to the delta sand body leaves,the more the number of slump turbidite,and the larger the area.In general,the front subfacies of the delta,the subfacies of the deep water fan and the gravity flow slip turbulence constitute the facies of high-quality reservoirs in the study area.The reservoirs are fairly favorable for oil and gas accumulation due to the deep burial and the mudstone cover.关键词
潮汕坳陷/侏罗系/沉积特征/沉积相Key words
Chaoshan Sub-basin/Jurassic/depositional characteristics/sedimentary facies分类
海洋科学引用本文复制引用
强昆生,鄢伟,张光学,张莉,吕宝凤,钟广见,冯常茂,易海,赵忠泉,杨振..南海北部潮汕坳陷侏罗系沉积特征及对储层的控制作用研究[J].中国地质,2018,45(1):48-58,11.基金项目
国土资源部海底矿产资源重点实验室开放基金课题(KLMMR-2017-A-15)及中国地质调查局项目“南海北部及台湾海峡油气资源调查”(DD20160154)资助.Supported by Key Laboratory of Seabed Mineral Resources Open Fund Project of Ministry of Land and Resources (No.KLMMR-2017-A-15) and the program of China Geological Survey(No.DD20160154). （KLMMR-2017-A-15）
