塔河油田6区、7区岩溶型碳酸盐岩油藏动态连通性及缝洞单元划分  

Dynamic Connectivity and Fracture-Vug Units Division of Karst Carbonate Reservoir in Block 6-7 of Tahe Oilfield

作　　者：杨小峰[1] 康志宏[1] 陈夷[1] 胡佳乐[1] 周磊[1] 

机构地区：[1]中国地质大学(北京)能源学院,北京100083

出　　处：《科学技术与工程》2015年第1期182-188,共7页Science Technology and Engineering

基　　金：国家十二五科技重大专项(2011ZX05009-003);中国石化西北油田分公司勘探开发研究院协作项目(KY2011-S-073)资助

摘　　要：塔河油田6区、7区奥陶系碳酸盐岩是以表生岩溶和构造运动为主形成的非均质性极强的溶洞-裂缝型复杂油藏。溶洞、溶蚀裂缝和溶蚀孔,是主要的油藏储集孔隙系统;裂缝,是其主要的流体通道系统。随着油藏的不断开发,油藏储集体极强的非均质性和孔洞系统的复杂性,严重制约了奥陶系油藏后续的开发效果。针对储集空间分布的复杂性,利用油藏动态资料,分析井间储层的连通性,进而对研究区缝洞单元的划分就十分必要。油藏动态资料包括:井间类干扰、示踪剂注采响应以及流体物性差异等资料。通过应用塔河油田6区、7区的动态资料,对研究区内的井组进行了连通性的确定以及缝洞单元的划分。这对于研究区后续的注水开发及剩余油的挖潜提供了一定的依据。Affected by epigenic karstification and tectonic movement,the Ordovician carbonate reservoir in Block 6-7 of Tahe Oilfield is an extremely heterogeneous and complex Karst-fracture reservoir.Karst cavities,Karst fractures and Karst pores are the major reservoir pore space system,while fractures are the mainly migration pathways.With continuous exploration and production of Block 6-7,the reservoir＇ s heterogeneity and Karst pores＇ complex have a bad effect on the oilfield.As for the complex reservoir pore space system,using reservoir dynamic data,analyzing interwell connectivity and dividing fracture-vug units are very necessary.Interwell quasi-interference,tracer injector and output,and fluid physical properties are the reservoir dynamic data.By making full use of dynamic data,interwell connectivity and fracture-vug units are built up,which is very useful for water injecting and remaining oil production.

关 键 词：塔河油田 缝洞型油藏 动态连通 缝洞单元划分 

分 类 号：TE121.1[石油与天然气工程—油气勘探]