塔河缝洞型碳酸盐岩油藏剩余油分布特征及影响因素  

Reservoir remaining oil distribution characteristics and influencing factors analysis of fracture-cavity carbonate reservoirs in Tahe oilfield

作　　者：吴永超[1] 黄广涛[1] 胡向阳[1] 刘中春[1] 

机构地区：[1]中国石化石油勘探开发研究院,北京100083

出　　处：《石油地质与工程》2014年第3期74-77,148,共4页Petroleum Geology and Engineering

基　　金：国家科技重大专项"碳酸盐岩油田开发关键技术"(2011ZX05014)

摘　　要：利用室内实验、动静态分析、数值模拟相结合的方法,建立了缝洞型油藏剩余油赋存方式分析技术,揭示了缝洞型油藏五种剩余油赋存方式,包括:因储集空间尺度差异,高导流通道圈闭的剩余油;油井未在洞顶,水淹后溶洞的顶部剩余油;未井控有效储集空间的剩余油;能量严重不足的各类储集空间内剩余油;因碳酸盐岩的亲油性,水波及过后的残余油膜。并分析了塔河油田裂缝、溶洞、储集空间类型、井型、工作制度以及注采比对剩余油的影响。结果表明,溶洞型储集体是主要的储集空间,井打在溶洞上的开采效果较好;裂缝、溶洞以及开发因素对剩余油的形成都有不同程度的影响,在剩余油分析中,要同时考虑多种因素。By using a variety of technical means,the remaining oil distribution characteristics and influencing factors analysis has been carried out.In combination with laboratory experiments,dynamic and static analysis,numerical simulation methods,analytical technique of remaining oil occurrence mode in fracture-cavity carbonate reservoir has been established and it reveals 5 modes,including remaining oil in trap,in the top of karst cave after water flooding,in reservoir space without well control,in various reservoir spaces with severe energy shortage and residual oil film after water sweeping.Combined with laboratory experiments and numerical simulation,the analysis of fracture,karst cave,reservoir space types,well types,working system and the influence of injection-production ratio on residual oil has been carried out.The results indicate karst cave is the main reservoir space and when the well is drilled on karst cave,the production effect is the best.On the whole,fractures,karst caves and development factors have different influence on remaining oil,therefore,various factors should be considered in remainingoil analysis.

关 键 词：塔河油田 缝洞型油藏 碳酸盐岩 剩余油 分布特征 影响因素 

分 类 号：TE344[石油与天然气工程—油气田开发工程]