页岩F区井型井网确定及参数优化研究

Well Type and Well Pattern Identification and Parameters Optimization Research in Shale Zone F

摘要: 本文首先对页岩F区储层特性和地质概况进行分析，然后运用Petrel地质建模软件和CMG数值模拟软件对页岩F区井型井网进行确定，最后对水平井水平段长度、水平井井距以及压裂裂缝半长这三个参数进行优化。研究结果表明：页岩F区适合采用水平井大规模压裂、衰竭式开发的开发方式并划分为一整套开发层系；确定以22口水平井为井网部署方案，其水平井井排方向为北偏东45˚；水平井水平段长度为1300 m，水平井井距为900 m，压裂裂缝半长为300 m时开采效果最佳。所得结论对该区的认识和开发具有重要的指导意义。

Abstract: Firstly, we analysis the reservoir characteristics and the geological condition in shale zone F. Then we use the Petrel software and CMG software to determine the well type and well pattern. Finally we optimize the three parameters of horizontal well’s horizontal section length, horizontal well’s well spacing and fracture half length. The results show that the shale zone F fits using horizontal well with large-scale fracturing and depletion way to develop and is divided into a set of develop- ment layer system. We determine the 22 horizontal wells as the well pattern deployment plan, and the horizontal wells’ direction is 45° north by east. When the horizontal section length is 1300 m; the horizontal well spacing is 900 m; the fracture half length is 300m, the production result is the best. The conclusion is of great significance to the realization and development of this zone.