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一、概述 裸眼井先期防砂技术,简单地讲就是在油层段扩大井径后下入筛管并填充砾石。扩孔器则是在裸眼井段中扩大井径的必需工具,它可以为砾石充填提供较大的环空。扩孔要求这种工具在井下能灵活地张开到规定尺寸并在扩孔结束后可靠地闭合,以保证顺利起出井下管柱。 我单位与上海石油化工研究所、上海第一石油机械厂协作,研制了YK152×305扩孔工具。这种工具配备了三种型号的牙轮切削臂,与国外同类产品相比,它具有操作简单,
First, an overview of open hole pre-sand control technology, simply put is to expand after the well hole into the screen and fill the gravel. The reamer is an essential tool for expanding the borehole in the openhole section, which provides a larger annulus for gravel packing. Reaming requires that this tool be flexibly open to the required size downhole and reliably close after reaming to ensure a successful downhole string. My unit and the Shanghai Institute of Petrochemical, Shanghai First Petroleum Machinery Factory collaboration developed YK152 × 305 reaming tools. This tool is equipped with three types of cone cutting arm, compared with similar foreign products, it has the operation is simple,