童叶森 聂尊浩 蔡山顺 陈若曦 易早立

摘要：随着西南油气田勘探开发逐渐向深部复杂地层发展，深部海相地层高压力系数、井底高温、裂缝发育等引起的故障复杂越来越多。本文详细阐述了塔探1井卡钻前的施工过程，卡钻后的处理情况，以及井下落鱼结构及落鱼所处位置等相关信息，统计各类型磨鞋磨铣井下121mm钻铤的机械钻速和进尺，结合磨鞋出井磨损情况分析，针对井下落鱼为钢级更高、壁厚更厚的钻铤，提出了磨鞋选型优选方案，达到提高落鱼磨铣效率的目的;为以后磨铣类似井下落鱼的磨鞋选型提供参考。

Abstract： As the exploration and development of oil and gas fields in Southwest China gradually develops into deep complex formations， the failures caused by the high pressure coefficient of deep marine formations， high temperature of bottom hole and the development of fractures are becoming more and more complicated. This article elaborated on the construction process before the stuck pipe in Tatan 1# well， the processing situation after stuck pipe， and the relevant information such as the structure of the fish falling in the well and the location of the fish falling， and statistics of the drilling speed and footage of various types of shoe grinding and milling machinery under the 121mm drill collar. Combined with the analysis of the wear situation of the grinding shoe out of the well， for the drill collar with a higher steel grade and a thicker wall thickness， a preferred shoe grinding type selection scheme is proposed to achieve the purpose of improving the efficiency of the grinding and milling of the fish. It will provide a reference for the selection of grinding shoes similar to the well-dwelling fish in the future.

关键词：磨鞋;钻铤;磨铣;选型

Key words： grinding shoes;drill collar;grinding and milling;selection

中图分类号：TE921                                      文献标识码：A                                  文章编号：1006-4311（2020）21-121-03

0  引言

在油气钻井作业中，难免出现掉钻头牙轮或断、掉钻具在井底。在入井其它工具打捞不成功时则只有下入磨鞋去磨铣井底所掉落鱼[1]。相较于钻杆，井下落鱼为钢级更高、壁厚更厚的钻铤时，在磨铣过程中存在单趟钻磨铣时间短，磨铣进尺低，起下钻频繁等诸多问题，使得井下复杂的处理周期变长，钻井成本增加。文中将对塔探1井磨铣121mm螺旋钻铤过程中所使用的各种磨鞋进行详细描述，通过对比分析所使用的磨鞋实际磨铣效果，找出导致磨铣进度缓慢的原因，优化磨鞋选型。

1  塔探1井概况

1.1 塔探1井基本情況

塔探1井是中国石油西南油气田分公司在四川盆地大塔场构造上部署的一口风险探井，该井位于四川省宜宾市宜宾县境内，设计井深6755m，以灯二段为目的层，钻探目的是了解大塔场构造灯影组及下古生界储层发育及含流体情况。……