储层裂缝多参数定量预测及在闵桥油田的应用  

THE QUANTITATIVE PREDICTION OF TECTONIC FRACTURE MULTI-PARAMETER AND ITS APPLICATION IN MINQIAO OILFIELD

作　　者：王军[1] 戴俊生[1] 季宗镇[1] 

机构地区：[1]中国石油大学地球资源与信息学院,山东东营257061

出　　处：《西南石油大学学报（自然科学版）》2010年第3期51-55,共5页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金："十五"国家科技重点攻关项目"大中型油田勘探开发关键技术研究"(2003BA613A-02)

摘　　要：运用岩芯观察统计及地应力场有限元数值模拟方法,基于应变能、表面能理论,采用格里菲斯岩石破裂准则,建立古、今裂缝参数计算模型,预测了闵桥油田阜二段低渗透砂岩储层裂缝密度、开度、孔隙度、渗透率等参数。研究发现,闵桥油田阜二段构造裂缝在阜宁晚期古地应力场中产生,在断裂带附近最为发育,走向以北东东向与北西西向为主。现今地应力对裂缝具有改造作用,裂缝参数高值区主要位于构造高部位,工区南部闵35断块裂缝最为发育,裂缝线密度约为1.5条/m,开度约为0.84mm,孔隙度约为0.26%,东西向渗透率约为94.00mD。受裂缝自身发育方向影响,裂缝南北向渗透率最小,低于5.00mD。On the basis of strain energy and surface energy theory,by using Griffith rock-craking principle,the aperture,density,porosity and permeability of Fu-2 member reservoir fractures in Minqiao Oilfield are predicted by core fracture statistics and tectonic stress field finite element numerical simulation.The result shows lots of tectonic fractures were generated due to the paleo-stress field in Late Funing period,which mainly exist near the faults with trend of NEE and NWW.The present stress field is of modified effect on these fractures,allowing the high value of fracture parameters to appear in the high part.The value of Min 35 fault block is the highest while the density is 1.5/m,the aperture is 0.84mm,the porosity is 0.26% and the permeability in WE is 94.00mD.Effected by the direction of fractures,permeability of fracture in NS is only 5.00mD.

关 键 词：裂缝预测 地应力 孔隙度 渗透率 岩芯描述 

分 类 号：TE112[石油与天然气工程—油气勘探]