基于储层构型的流动单元划分及其分布规律  

Flow Unit division and their distribution law based on reservoir architecture

作　　者：屈兴勃 刘学利[2] 郑小杰[2] 谭涛[2] QU Xing-bo;LIU Xue-li;ZHENG Xiao-jie;TAN Tao(College of earth science and resources,Chang'an University,Xi'an 710054;Sinopec Northwest Oilfield Company,Urumqi,Xinjiang 830011)

机构地区：[1]长安大学地球科学与资源学院,陕西西安710054 [2]中国石化西北油田分公司,新疆乌鲁木齐830011

出　　处：《内蒙古石油化工》2022年第1期88-94,共7页Inner Mongolia Petrochemical Industry

基　　金：2019年中国石化科技攻关项目“塔河油田底水砂岩油藏提高采收率技术研究”(P19026-1);国家重点基础研究发展计划(“973”计划)项目(2012CB214804)

摘　　要：为了揭示塔河油田9区下油组辫状河三角洲储层非均质性及流体渗流规律,采用层次分析、模式拟合的思路,对辫状河三角洲储层砂体进行构型分析,识别出各级次渗流屏障,并划分连通单元。在此基础上筛选出渗透率、孔隙度、流动带指数(FZI)、孔隙几何形状因子(R_(35))为判别参数,通过聚类分析及逐步判别的方法在储层内部定量划分出Ⅰ类、Ⅱ类、Ⅲ类、Ⅳ类4类流动单元,刻画出各单层流动单元平面分布图,分析其空间分布特征。To reveal the inhomogeneity and fluid percolation pattern of the braided river delta reservoir in the lower oil reservoir of Tahe oilfield in Zone 9,we used the ideas of hierarchical analysis and model fitting to perform conformational anatomy of the braided river delta reservoir sand body,identify the secondary seepage barrier at all levels and divide the connecting units,Base on this,permeability,porosity,flow zone index(FZI),pore throat geometry(R35)and fluid production capacityt as the discriminating parameters,four types of flow units of type I,type II,type III and type IV are quantitatively classifiedwithin the reservoir by cluster analysis and stepwise discriminative method,and depicting the distribution map of flow unit and analyzing the spatial distribution characteristics.

关 键 词：辫状河三角洲 储层构型 流动单元 塔河油田 三叠系 

分 类 号：P618.13[天文地球—矿床学]