三叠盆地奥陶系Hamra组沉积相分析  

Sedimentary Facies Features of Hamra Formation in Triassic Basin of Algeria

作　　者：王宇[1] 李舒曼[1] 张远[1] 汤睿[1] 刘武波[1] 

机构地区：[1]长江大学地球科学学院,湖北武汉430100

出　　处：《长江大学学报（自科版）（中旬）》2013年第7期24-26,161,共3页Journal of Yangtze University(Nature Science Edition)

基　　金：国家科技重大专项(2011ZX05030)

摘　　要：三叠盆地是阿尔及利亚重要的含油气盆地之一,位于非洲中北部。主要研究的储层为奥陶系Hamra组,依据对研究工区内取心井资料的查看和研究,发现Hamra组主要由一套灰白色细砂-粉砂岩且局部夹黑色泥岩组成,并根据各个沉积相标志将Hamra组沉积环境判定为滨岸相沉积和浅海陆棚相,并进一步划分出4个沉积亚相。研究工区Hamra组滨海相在平面上呈现NW-SE方向展布,砂体连续性比较好,有利于发育较好的储层。Triassic Basin is one of the important petroliferous basins in Algeria,it is located in the North Africa,the main reservoir of the Ordovician Hamra Formation is studied,according to the view and research of the coring wels,it is found that Hamra Formation is mainly consisted of the grey-white fine sandstone-siltstone,and partly with black mudstone,and it is determined that the depositional environments of the various sedimentary facies in Hamra Formation are shoreline facies and shallow-sea continental shelf facies,andit can be further divided into four subfacies.In the plane,the Hamra Formation shoreline facies extends from NW to SE in research work area,it has better continuity of sand bodies,conducive to the development of better reservoirs.

关 键 词：三叠盆地 奥陶系 Hamra组 滨岸相 浅海陆棚相 沉积相特征 

分 类 号：TE122.2[石油与天然气工程—油气勘探]