杜84块馆陶油藏隔夹层研究

RESEARCH ON INTERLAYER IN DU 84 GUANTAO RESERVOIR

杜84块馆陶油藏目前采用SAGD开发方式进行开发,开发过程中监测资料反应隔夹层对蒸汽腔扩张影响较大。根据岩心分析资料,杜84块馆陶油藏可以识别出泥质和物性两种隔夹层。对隔夹层的成因进行分析,认为储层的沉积特征是形成隔夹层的主控因素。通过测井曲线电性特征及储层物性特征,制定该区域隔夹层识别标准。根据井温观测曲线蒸汽腔突破隔夹层时间,结合厚度,物性参数,将该区域隔夹层划分三类。最后对隔夹层平面分布特征进行研究,该区域主要的三套隔夹层分布及对SAGD开发效果具有不同影响。

Du 84 Guantao reservoir is developed by SAGD technology. During the development process,the monitoring data reflects that the interlayer has a great influence on steam chamber expanding. According to the core analysis data,it can identify two kinds of interlayer-the muddy intercalation and physical interlayer in Du 84 Guantao reservoir. By analyzing the causes of interlayer,the main controling factors of the interlayer formation is sedimentation characteristics of reservoir. We set the interlayer identification standard by well logging electrical property and reservoir quality for this region. Based on the temperature log and steam chamber breakthrough time,combining thickness and physical parameter,the intercalation is divided into three kinds in this region.Finally researching the distribution features of intercalation,the distribution of main three sets of interlayer and it has different kinds of influence on SAGD development.