针对东辛油田营451断块东营组地震反射差、构造相对复杂、河流相沉积砂体平面分布稳定性差等难题，以精细油藏描述为基础，结合油藏地质特征，优选相邻两层D244、D245为目的层部署两分支鱼骨状水平井——营451-支平1。在综合考虑构造高度、含油高度、隔夹层分布等主控因素，分别对鱼骨水平井各支水平段长度、夹角、位置进行优化，有效地改善了区块的开发效果，大大挖掘了老区剩余油潜力。%The two branched fish-bone horizontal well,Ying-451-Zhiping1,is specifically dedicated for two selected layers,D244 and D245,based on detailed reservoir description and geological features of reservoir in terms of low quality seismic data,complex tectonic feature and high variable sand distribution caused by fluvial deposition in the Dongying formation,451 Fault,Dongxin Oilfield. The fish-bone branched horizontal well is optimized with respect to branch interval length,intersection angle,and position taking into account of factors such as tectonic height,oil height,distribution of interlayers and so on. It proves to be helpful in improving the development and potential stimulation in mature oilfield.
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