多参数定量研究流动单元的方法——以鄂尔多斯盆地W93井区为例  

Study on Multi-Parameters Discrimination Method for Flow Units—Taking W93 Wellblock in Ordos Basin as An Example

作　　者：康立明[1] 任战利[1] 

机构地区：[1]西北大学大陆动力学国家重点实验室/地质系,西安710069

出　　处：《吉林大学学报（地球科学版）》2008年第5期749-756,共8页Journal of Jilin University：Earth Science Edition

基　　金：国家"973"项目(2003CB214605);长江学者和创新团队发展计划项目(IRT0559)

摘　　要：多参数识别是流动单元研究的发展方向,判别参数选择是多参数识别流动单元的关键。以鄂尔多斯盆地W93井区延长组长6河流相储层为例,应用SPSS统计分析软件,通过对表征储层的11项属性参数判别流动单元的能力及参数之间的相关性分析,选取渗透率、有效厚度、渗流系数、储能系数、流动层指数、油藏品质指数6项参数作为W93井区流动单元判别参数,建立了流动单元判别函数,研究了各油层组流动单元特征。研究表明,本区的河流相储层可以划分为为A、B、C、D 4类流动单元,分别分布在水下分流河道、河口坝、决口扇、分流间湾和水下天然堤微相中。不同的流动单元具有不同的渗流能力和储集能力,因此油田开发生产中应采取不同的开发对策。Selecting discretion parameter is the key of multi-parameters to identify flow units.Taking reservoir of fluvial facies of Yanchang Formation in the area of well W93 in Ordos Basin as an example,utilizing SPSS statistical analysis software,through analyzing the discretions and their correlation between eleven parameters of reservoirs and choosing permeability,effective thickness,filtrational coefficient,storage energy coefficient,FZI,RQI as discretion parameters,the discretion function of flow units has been established,the characters of flow units have been investigated.The results show that the flow units consist of type A,B,C and D which distribute in sedimentary microfacies of subaqueous distributary channel,mouth bar,crevasse splay,interdistributary bay and subaqueous natural levee,respectively.Different flow units have different filtrational and reservoir ability,so different methods should be adopted according to the different flow units of reservoir.

关 键 词：流动单元 判别函数 多参数 河流相 延长组 

分 类 号：P618.13[天文地球—矿床学]