导向磨铣工具在修井中的应用

针对目前小通道套损井找通道困难的实际情况,使用在用原有的磨铣工具,如磨鞋、铣锥的基础上,用现成捞矛杆加工成一定长度的导向杆,或使用钻杆加工成笔尖后制成。根据套损实际情况,导向杆下端部可以加工成椭圆形、平面式或笔尖形状,可以堆焊合金或不焊合金。进行套管修复作业时,先用导向杆引入到原井眼套管内对破损套管进行初期扩径修整,然后下入较大直径常规扩径磨铣工具进行扩径,最后下入密封加固管修复。由于导向杆的引导和扶正作用,阻止了磨鞋、铣锥偏磨,解决了磨损套管现象,现场应用效果显著。

Direct Milling Tool's Application in Well Repair

According to the difficult situation of finding accessof small channel casing wells and based on using the original milling with tools such as grinding shoes, milling cone, spear fishing rod with a ready-made processed into a certain length guide rod, using drill pipe made of processed tip. Based on the actual situation, guide rods can be processed into the bottom of the department of oval, planar, or tip shape, you can not weld surfacing or alloy. Casing repair work is carried out, the first guide bar with the introduction of the original well bore casing to casing damage within the initial expanding dressing, and then down into the larger diameter of conventional expanding milling tools, and finally down into the sealed tube repair reinforcement . As the guide rod and righting the role of shoes to prevent the grinding, milling, and grinding cone side solves the wear phenomena, field application results are obvious.