塔里木盆地巴楚中奥陶统一间房组生物礁-滩发育模式和储集物性  

Reef-shoal depositional model and reservoir qualities of middle Ordocician Yijianfang formation in Bachu,Tarim Basin

作　　者：王瑞[1,2] 焦养泉[2] 荣辉[2] 邢凤存[3] 曾凡平[2] 李荣[2] 朱筱敏[1] 

机构地区：[1]中国石油大学地球科学学院,北京102249 [2]中国地质大学资源学院,湖北武汉430074 [3]中国地质大学海洋学院,北京100083

出　　处：《中国石油大学学报（自然科学版）》2012年第1期47-52,59,共7页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：中国石油化工集团公司前瞻性项目(YPH08114)

摘　　要：依据精细的露头写实及室内分析,对塔里木盆地巴楚一间房露头区中奥陶统一间房组生物礁-滩沉积体系发育模式及储集性能进行研究。结果表明:一间房组自下而上共划分为5个三级层序,每个层序均由TST和HST构成,生物礁-滩沉积体系主要发育于层序1至层序3中,由生物礁、生物碎屑滩和台缘背景沉积3种成因相组合构成;层序1和层序2的HST内发育进积型生物礁-滩沉积体系,以沉积高能带向盆地方向迁移为特点;层序3的TST内发育退积型生物礁-滩沉积体系,以沉积高能带向台地方向迁移为特点,其中早期为海侵追补型,晚期为海侵并进型;在生物礁-滩沉积体系中,礁前内侧砂质滩和礁后内侧砂质滩具有相对较好的储集性能,是潜在的优质储层。Fine outcrop description as well as laboratory analysis were carried out to reveal the depositional model and the features of reservoir quality distribution of platform margin reef-shoal depositional system of the middle Ordocician Yijiangfang formation in Bachu Yijiangfang outcrop.The results show that Yijianfang formation is divided into five three-order sequences from bottom to top,each of which is comprised of TST and HST.Formed by three genetic facies namely reef,bioclastic beach and background deposit of platform,the reef-shoal depositional system mainly develops at the carbonate platform margins of sequence 1 to sequence 3.The prograding reef-shoal depositional system is featured by the movement of high energy zone towards basin direction,and developed in the HST of sequence 1 and sequence 2.In the TST of sequence 3,the retrograding reef-shoal depositional system is developed with the constant moving of high energy zone to the platform.In such a sequence,catch-up transgression reef-shoal complex develops in the early period,whereas keep-up transgression reef-shoal complex grows in the later one.In the reef-shoal depositional system,the reef-front interior arenaceous beaches and reef-back interior arenaceous beaches are usually potentially high-quality reservoirs.

关 键 词：塔里木盆地 巴楚地区 一间房组 生物礁-滩 沉积模式 储集物性 

分 类 号：TE122.2[石油与天然气工程—油气勘探]