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大庆采油七厂垣平1水平井示范区的8口水平井于2013年12月初全部完钻,平均油层钻遇率达到68.2%。垣平1水平井示范区开发的是葡萄花油田扶余油层。该油层属于低—特低渗透油田,具有油层薄、储量丰度低、岩性致密等特性。这类油层中的油也就是人们所说的“致密油”。直井开发效益差,因此,水平井开发成为主攻方向。采油七厂加大了地震资料应用力度,实现了地下构造、储层预测的精细化认识,水平井井区、井型、方位、长度和完井均实现了优化设计,水平井开发配套技术逐渐成熟。钻进过程中,科研人员克服重重
The 8 horizontal wells in the Yuanping 1 horizontal well demonstration zone of Daqing Oil Production Plant No. 7 were completely drilled at the beginning of December 2013 with an average oil drilling rate of 68.2%. Yuanping 1 horizontal well demonstration area is the development of Putaohua Oilfield Fuyu reservoir. The reservoir belongs to the low-ultra-low permeability oilfield and has such characteristics as thin oil reservoirs, low reserves abundance and tight lithology. The oil in such reservoirs is what people call “tight oil.” The benefits of vertical well development are poor, so horizontal well development becomes the main direction. The Seventh Oil Production Plant increased the application of seismic data and realized the meticulous understanding of underground structures and reservoir prediction. The optimized design was achieved in horizontal well areas, well types, azimuths, lengths and completions, and the horizontal well development supporting technologies gradually mature. Drilling process, researchers overcome the heavy