摘要
川东南北部石家场长兴组发育开阔台地、台地边缘礁滩、台地前缘斜坡相。综合钻井及地震资料,长兴组划分为2个级层序(SQ1、SQ2),4个级层序。长兴组储层主要为礁滩相储层,位于层序的高水位体系域。长兴组沉积早期,南部池A井一带为储层发育有利区。东北部为台地前缘斜坡沉积,储层不发育;长兴组晚期,北部兴隆B井一带,主要发育生屑滩与暴露浅滩,为储层发育有利相带。长兴组台缘礁滩从早期-晚期具有向陆棚方向叠置增生的特征。储层发育受层序与沉积相带控制明显同时受到微地貌变化的影响。
There＇re three sedimentory facies in Changxing Formation in Shijia Chang northern of south-eastern Sichuan,including platform slope,platform margin reef flat and open platform.Changxing Formation can be divided into two third-order sequences（SQ1SQ2） and four fourth-order sequences.The mainly reservoir in Changxing Formation is the reef-bank type which mainly located in the HST unit of the third-order sequence.During early sedimention of Changxing Formation,it＇s favorable for the development of the reservoir along Chi A log in the southern part.And during late sedimention,the bioclastic shoal and the exposed shallow-bank facies develop fast along the XL B log in the north which are the favorable facies for reservoir.Platform margin reef flat in Changxing Formation moves towards shelf and superposed developed.The development of he reservoir is affected by the sequence,sedimentory facies and the changes of the micro-landform.
出处
《内蒙古石油化工》
CAS
2010年第24期197-200,共4页
Inner Mongolia Petrochemical Industry
关键词
长兴组
层序地层
沉积相
生物礁、滩
川东南
Changxing Formation
Sequence stratigraphy
Sedimentory facies
Reef and shoal
South-eastern Sichuan
