塔河油田碳酸盐岩缝洞型油气藏的特征及缝洞单元划分  

Ordovician Carbonate Fractured-vuggy Reservoir in Tahe Oilfield, Tarim Basin: Characteristics and Subdivision of Fracture-Vug Units

作　　者：张希明[1] 朱建国[1] 李宗宇[1] 杨坚[1] 

机构地区：[1]中国石化西北分公司

出　　处：《海相油气地质》2007年第1期21-24,共4页Marine Origin Petroleum Geology

基　　金：国家重点科技攻关项目(编号:2001BA650A-03)成果

摘　　要：塔河油田奥陶系碳酸盐岩缝洞型油气藏的主要特征表现为油气藏高度远大于残丘圈闭幅度,油气分布受储集体发育程度控制,纵向上不连续,储集体主要为岩溶-构造作用所形成的缝洞,单个缝洞储集体为独立的油水系统等。运用油藏压力降落法、类干扰试井法和流体性质变化法等方法将塔河油田主体开发区划分出10个连通储渗单元和20个孤立或相对定容封闭体,对这些缝洞单元的特点作了描述。塔河油田整体上不具统一的底水;各油气藏流体性质变化较大。Tahe Oiffield is located in the southem Ackulie Arch of Xayar Uplift in northern Tarim Basin, The Ordovician limestone reservoir is a unique kind of composite one with mural-units of fractures and/or vugs （or caverns） so it is similar with neither fractural one nor buried-hill one. The height of the reservoir is much larger than the relief of residual trap. Distribution of hydrocarbon is under the control of developing reservoir. Reservoir bodies are composed of fractures and vugs formed by karstifc, ation and tectonization, which are not continuous in longitudinal, and usually a single fracturedvuggy reservoir body is an isolated oil/water system. 10 connecting permeable-stored units and 20 isolated or constantvolume sealed bodies of the reservoir are subdivided and described in feature. The whole oiffield has not unitive basal groundwater and quite different quality of fluids exists in different reservoir bodies.

关 键 词：奥陶纪 碳酸盐岩油气藏 缝洞型油气藏 油气藏特征 塔河油田 

分 类 号：TE112.33[石油与天然气工程—油气勘探]