分阶段流动单元模型的建立及剩余油预测——以别古庄油田京11断块为例  

Phased flow unit model establishment and remaining oil prediction: An example from Jing 11 block in Bieguzhuang Oilfield

作　　者：彭仕宓[1] 周恒涛[1] 李海燕[1] 张文胜 胡海涛[3] 

机构地区：[1]中国石油大学(北京)资源与信息学院 [2]中国石油华北油田公司 [3]中国石油长庆油田公司

出　　处：《石油勘探与开发》2007年第2期216-221,251,共7页Petroleum Exploration and Development

基　　金：国家重大基础研究"973"项目前期研究专项(2002CCA00700)

摘　　要：针对别古庄油田京11断块已经进入高含水期、产量递减较快、储集层非均质性严重的开发现状,以取心井岩心分析资料为基础,优选了与储集层岩性、物性及渗流特征相关的宏观、微观参数,应用聚类分析和判别分析相结合的方法,将储集层划分为4类流动单元。在此基础上,根据各开发时期油田的含水特征,分3个开发阶段(开发初期、中期、后期),选用截断高斯模拟方法,建立了不同含水期流动单元的三维模型,研究了注水开发过程中流动单元的变化,并结合开发后期剩余油饱和度的计算对剩余油分布进行了预测。研究表明:在不同开发阶段,剩余油分布与储集层流动单元类型关系密切,在开发后期,工区3、4类流动单元储集层是剩余油分布的相对富集区域。The Jing 11 block in Bieguzhuang Oilfield has entered the high water-cut period, the production decline is quick and the reservoir heterogeneity is serious. Based on the core data analysis, the reservoir is divided into four kinds of flow units using the cluster and discriminatory methods and the optimized macroscopic and microscopic parameters related to reservoir lithology, physical property and interstitial flow. Flow unit models are therefore established corresponding to different development periods （initial, intermediate and late） according to the water saturation characteristics, and the change of the flow units is studied. The distribution of the remaining oil in the block is then predicted with the remaining oil calculation in the development tail. The study indicates that in different development periods, the distribution has a close relationship with flow unit types, and in the late period of development, the flow units of types 3 and 4 are the richer accumulation areas of remaining oil.

关 键 词：京11断块 高含水期 流动单元 流动分层指数 剩余油 聚类分析 

分 类 号：TE323[石油与天然气工程—油气田开发工程]