温米油田采液、采油指数变化规律  

The Variation Patterns of the Fluid Produc-tivity Index and Oil Productiv ity Index in Wenmi Oilfield

作　　者：孙欣华[1] 刘永军[1] 于锋[1] 王前荣[1] 

机构地区：[1]中国石油吐哈油田公司勘探开发研究院,新疆哈密839009

出　　处：《新疆石油地质》2002年第1期49-51,共3页Xinjiang Petroleum Geology

摘　　要：对温米油田采液、采油指数变化规律及影响因素进行了分析、研究,分析了原油粘度和启动压力梯度对采液、采油指数随含水率变化规律的影响,对不同微相的采液指数随生产压差变化规律进行了研究后指出,随着生产压差的增大,河道砂的采液指数比边缘砂采液指数下降快一些;储集层渗透性越差,由压力下降引起的渗透率就越严重;采液、采油指数的变化受含水率变化影响较大;地层脱气可导致采液、采油指数下降。这对油田进行提液采油有一定的指导意义。This paper analyzed the variation of the fluid productivity index and oil productivity index in Wenmi oilfield and their affected factors in which include the effects of crude viscosity and starting pressure gradient on these two indexes with changes of water-cut.The studies of the variation of the fluid productivity index for different microfa-cies with increasing production differential pressure show that fluid productivity index of channel sand decreases faster than that of edge sand with the increasement of production pressure differences;the poorer the percolation property of reservoir,the more serious impermeability caused pressure declines;the effect of water-cut on fluid productivity index and productivity index is greater;the decrease of fluid productivity index and productivity index occurs due to formation degassing.The re sults will be as a guide for fluid-extracting oil recovery in Wenmi oilfield.

关 键 词：温米油田 采液指数 采油指数 启动压力梯度 生产压差 渗透率 储集层 

分 类 号：TE34[石油与天然气工程—油气田开发工程]