塔里木盆地塔中北坡奥陶系一间房组储集层主控因素分析  

Main Controlling Factors of Reservoir in Ordovician Yijianfang Formation on the Northern Slope of Middle Tarim Basin

作　　者：尚凯[1] 郭娜[2] 曹自成[1] 韩俊[1] 徐勤琪[1] 

机构地区：[1]中国石化西北油田分公司勘探开发研究院 [2]中国石化西北油田分公司石油工程技术研究院

出　　处：《海相油气地质》2017年第1期39-46,共8页Marine Origin Petroleum Geology

基　　金：国家科技重大专项专题"塔里木盆地中央隆起区海相碳酸盐岩层系油气成藏主控因素与勘探突破目标评价"(编号:2011ZX05005-004)资助

摘　　要：综合分析钻井岩心、岩石薄片、测井资料以及各种化验分析资料,认为塔里木盆地塔中北坡中奥陶统一间房组深层碳酸盐岩储集层主要发育在台内滩相颗粒灰岩中,储层类型主要为裂缝型、裂缝-孔洞型和孔洞型。沉积微相、断裂和溶蚀作用是储层形成的主控因素。其中,台内高能滩的发育为后期选择性溶蚀奠定了物质基础,大气淡水溶蚀作用和埋藏期岩溶作用在一定程度上改善了储集性能,多期次活动的北东向断裂带是优质储层形成的关键。Based on the analysis of core observation, rock thin sections, logging data and a variety of testing data of the Middle Ordovician Yijianfang Formation on the northern slope of middle Tarim Basin, reservoirs are mainly distributed in grain limestone of intra-platform shoals. The main reservoir types in this area are fractured reservoirs, fractured-vuggy reservoirs and pore-cave reservoirs. The controlling factors of reservoir genesis are sedimentary microfacies, faults and dissolution. The carbonate shoals provide the early material basis for the later selective dissolution. Meteoric-water dissolution and burial dissolution improved the properties of reservoir to some extent. The multi-period activities of the NE-trend faults played a key role in controlling the high quality reservoir.

关 键 词：塔里木盆地 塔中北坡 奥陶系 一间房组 碳酸盐岩 储集层 

分 类 号：TE122.2[石油与天然气工程—油气勘探]