新疆塔里木盆地白垩—第三纪沉积相及储集体分析  

An Analysis of Cretaceous-Tertiary Sedimentary Facies and Reservoirs in Tarim Basin, Xinjiang

作　　者：丁孝忠[1] 郭宪璞[1] 彭阳[1] 王易农[2] 王大宁[1] 李汉敏[2] 何希贤[1] 金若谷[1] 杨国栋[2] 

机构地区：[1]中国地质科学院地质研究所 [2]中国石化新星公司西北石油局,新疆乌鲁木齐830011

出　　处：《岩石矿物学杂志》2001年第2期146-155,共10页Acta Petrologica et Mineralogica

基　　金："九五"国家重点攻关项目资助!(96 - 111;99- 111)

摘　　要：根据沉积特征、岩石矿物特征、生物特征及地球化学特征的综合分析 ,将塔里木盆地白垩—第三系划分为 3个沉积相组、12个沉积相、2 0个沉积亚相和若干个沉积微相 ,并首次在塔北发现海相沉积。塔里木盆地白垩—第三纪储集体包括碎屑岩和碳酸盐岩两种。东北坳陷区储层主要为碎屑岩 ,特别是下白垩统卡普沙良群亚格列木组是沙雅隆起上的重要储层 ,上白垩统巴什基奇克组是库车前陆盆地的重要储层。西南坳陷区储层包括碎屑岩储层和碳酸盐岩储层两种岩性 ,如下白垩统上部乌鲁克恰特组滨岸海滩砂砾岩及上白垩统依格孜牙组生物丘灰岩等也构成较好的储集层。From Cretaceous to Tertiary, the Tarim basin developed many types of sedimentary facies. There are marine, non-marine and transitional facies distributed over this area. The Upper Cretaceous-Paleogene marine deposits are scattered mainly over the foothills of West Kunlun to Southwest Tianshan Mountains in the southwestern depression of Tarim basin, but do not occur in the northeastern depression of Tarim basin. The Lower Cretaceous-Miocene strata mainly have non-marine deposits. According to an integrated analysis of the features of sedimentation, rocks and minerals, organism and geochemistry, the Cretaceous-Tertiary deposits in Tarim basin can be divided into 3 sedimentary facies groups, 12 sedimentary facies, 20 sedimentary subfacies and a certain number of sedimentary microfacies, and the Late Cretaceous marine deposits have been found for the first time in the northern Tarim basin. From Cretaceous to Tertiary there were developed two kinds of reservoirs in Tarim basin?clastic reservoirs and carbonate reservoirs. The reservoirs in the northwestern depression of Tarim basin are mainly clastic rocks. The Lower Cretaceous Yageliemu Formation of Kapushaliang Group, in particular, is a significant reservoir in Shaya uplift, and the Upper Cretaceous Bashijiqik Formation is an important reservoir in Kuqa foreland basin. The reservoirs in the southwestern depression include clastic reservoirs and carbonate reservoirs. The sandstone and conglomerate of the upper Lower Cretaceous Wulukeqiate Formation, the bioherm limestone of the Upper Cretaceous Yigezia Formation in the front of the foothills of west Kunlun can also form fairly good reservoirs.

关 键 词：塔里木盆地 白垩-第三纪 沉积相 储集体 地球化学特征 油气藏 

分 类 号：P618.13[天文地球—矿床学] P588.2[天文地球—地质学]