子长油田王家湾区长21-2小层流动单元定量研究  

Quantitative Research on Flow Units of the Chang 2^(1—2) Layer in Wangjiawan Area,Zichang Oilfield

作　　者：陈培元[1] 杨新涛[2] 于海珑 杨辉廷[1] 贾兆扬 

机构地区：[1]油气藏地质及开发工程国家重点实验室,西南石油大学,成都610500 [2]中国石油天然气股份有限公司新疆油田分公司 [3]中石油西部钻探克拉玛依录井工程公司,克拉玛依834000 [4]中海油深圳分公司,深圳518000

出　　处：《科学技术与工程》2014年第6期112-117,共6页Science Technology and Engineering

基　　金：“十二五”国家科技重大专项大型油气田及煤层气开发(2011ZX05049);四川省重点建设学科(SZD0414)共同资助

摘　　要：针对子长油田王家湾区油藏开发中面临的问题,对长21—2小层选择多参数综合法进行了流动单元的划分。首先,优选了孔隙度(Φ)、渗透率(K)、泥质含量(Vsh)、孔喉半径(R35)、流动层段指数(FZI)等能充分反映储层特征的参数,通过主因子分析和系统聚类等数学方法对取芯井进行了流动单元划分;并由此建立了各类流动单元的Bayes判别函数,在判别函数的基础上对非取芯井以测井解释数据为依据进行流动单元的划分。结果表明:长21—2小层划分为四种类型(E、G、M、P)的流动单元,研究区以E和G为主,两者主要发育在河道主体,侧向连续性好,分布面积大。单井产量与流动单元类型关系密切,高产井主要分布在优势流动单元内;受流动单元纵向组合样式影响,E和G对M和P会产生两种截然不同的吸水效果。To the reservoir problems of development in Wangjiawan area,Zichang oilfield,the multi-parameter synthesis has carried on the division of flow units in Chang 21-2 layer.First,optimizing the parameters,such as porosity （Φ）,permeability（K）,shale content（Vsh）,pore throat radius （R35） and flow zone index （FZI）,which can fully reflect the characteristics of the reservoir.Then using some mathematical methods,such as principal factor analysis and hierarchical clustering to divide flow units on coring wells,and thus establish the Bayes discriminant function of all kinds of flow units.With the help of the Bayes discriminant function the flow units of non-coring wells is divided on the basis of the well logging date.The result shows the flow unit of Chang 21-2 layer can be devided into four types,such as E （Excellent）,G （Good）,M （Middle） and P （Poor）.E and G are the most important types in the study area,they were mainly develop on the principle parts of the channel with good lateral continuity and large distribution area.Single well production is closed to the types of flow unit,and high production wells are mainly distributed in the advantage flow units （E and G）.Affected by the vertical flow unit combination style,M and P will have two distinct water absorption effect by the E and G.

关 键 词：流动单元 主因子分析 Q型聚类分析 判别函数 长21-2小层 子长油田 

分 类 号：TE122.113[石油与天然气工程—油气勘探]