准噶尔盆地北三台凸起中下三叠统沉积体系与储层特征  

Sedimentary system and reservoir characteristics of Lower-Middle Triassic in Beisantai swell, Junggar Basin

作　　者：邵国良[1,2] 杜社宽[2] 唐相路[1,2] 赵光亮[1,2] 戴龙[1,2] 张大权[1,2] 

机构地区：[1]中国科学院大学,北京100049 [2]中国科学院油气资源研究重点实验室,甘肃兰州730000

出　　处：《岩性油气藏》2013年第3期58-65,91,共9页Lithologic Reservoirs

基　　金：国家重大科技专项"准噶尔盆地深层火山岩储集体形成演化与分布预测"(编号:2011ZX05008-00W-X0)资助

摘　　要：从区域地质背景出发,通过对沉积层序、岩心特征、测井及录井等资料的分析,研究了准噶尔盆地北三台凸起的沉积体系、演化过程及储层特征,并详细预测了有利含油区带。平面上,北三台凸起中下三叠统自北东—南西向依次发育辫状河三角洲前缘亚相、三角洲前缘亚相及滨浅湖亚相沉积,物源来自于东北部的克拉美丽山。沉积相分布的主控因素为构造抬升与沉降、湖平面变化和沉积物的供给等。从储层物性来看,研究区多属于低孔、低渗的Ⅲ类储层,优质储集相带主要发育在水下分流河道微相。Based on the regional geologic settings, combined with the analysis of sedimentary sequence, core features and well logging data, this paper studied the sedimentary system, evolutionary process and reservoir characteristics of Beisantai swell, and predicted the favorable range zone. The result shows that from the northeast to southwest of the study area, there successively developed braided delta front subfacies,delta front subfacies and shallow lake subfacies, and the principal source is mainly from the Kelameili mountain in the northeast. The main controlling factors of the sedimentary facies distribution are tectonic uplift and subsidence, lake level changes and sediment supply. According to the reservoir physical properties, the study area belongs to low permeability and low porosity type Ⅲ reservoir, and high quality reservoir facies belts are mainly developed in underwater distributary channel.

关 键 词：沉积体系 储层特征 有利含油区带 中下三叠统 北三台凸起 准噶尔盆地 

分 类 号：TE122-2[石油与天然气工程—油气勘探]