复杂小断块稠油油藏注水开发对策  

Technical countermeasures for improving waterflooding of heavy oil reservoirs on complex fault-block

作　　者：孙冲[1] 秦玲[2] 吴官生[2] 申志军 蔡冬梅 成新生[2] 

机构地区：[1]中国石化石油勘探开发研究院,北京100083 [2]中国石化河南油田分公司,河南南阳473132 [3]中油国际海外研究中心,北京100083

出　　处：《大庆石油学院学报》2008年第6期56-59,共4页Journal of Daqing Petroleum Institute

基　　金：中国博士后科学基金项目(20070410610)

摘　　要：以泌阳凹陷古城油田泌123、泌124断块为例,研究普通稠油复杂断块油藏的特点.普通稠油复杂断块油藏具有断块小、油水界面参差不齐、储层非均质性严重、原油黏度高、驱油效率低等油藏地质特点.根据水驱油机理,系统研究复杂小断块普通稠油油藏注水开发中含水率、采液(采油)指数和存水率的变化特征及开发中后期剩余油分布特征.采取相应的技术对策后,泌123、泌124开发效果得到明显的改善,压力保持水平有所提高,含水率上升得到控制,采油速度保持在较高水平.Characteristics of complex fault block heavy oil reservoirs are studied by taking B123 & B124 fault block of Gucheng oil field in Biyang depression as examples.Ordinary heavy oil reservoirs on complex fault block feature in small fault block,irregular oil-water contact,heavy heterogeneity,high crude oil viscosity and low displacement efficiency etc.Based on the mechanisms of water driving,this paper systematically studies variations of water-cut,productivity factor,accumulated water-holding ratio,remaining oil distribution in the middle and late stages of development.Several technical measures are presented and applied to B123 and B124 wells,the development effects are improved,pressure are maintained at higher level,water cut is controlled,and oil production rate is increased.

关 键 词：稠油油藏 注水开发 复杂小断块 

分 类 号：TE357.6[石油与天然气工程—油气田开发工程]