5LZ172-Ⅲ型长寿命螺杆钻具的研制  

Development of Model 5LZ172-Ⅲ Screw Drill with a Long Service Life

作　　者：张国伟[1] 史桂云[1] 刘广良 

机构地区：[1]胜利石油管理局黄河钻井总公司管具公司 [2]山东胜油钻采机械有限公司

出　　处：《石油机械》2012年第4期30-33,共4页China Petroleum Machinery

基　　金：胜利石油管理局2009年产业化项目“复合钻进用高性能螺杆钻具的研制”(GC1004)

摘　　要：针对5LZ172-Ⅱ型螺杆钻具使用寿命短,难以满足施工要求的问题,通过改进旁通阀结构、研制等壁厚定子及配套转子、采用油密封传动轴以及挠轴等结构,研制出5LZ172-Ⅲ型高性能长寿命螺杆钻具。现场应用情况表明,5LZ172-Ⅲ型螺杆钻具在钻井液大排量条件下使用寿命为316 h,该钻具在多口井的应用中均获得了260 h以上的长寿命,同时减少了钻井过程中不必要的起下钻作业,提高了机械钻速,缩短了建井周期。Model 5LZ172 - Ⅱ screw drill has so short a service life that it cannot meet the needs of field operation. Therefore, Model 5LZ172 - m high-performance screw drill with a long service life was developed by means of improving the structure of by-pass valve, developing iso-wall thickness stator and matching rotor and adopting the structures of oil-sealed transmission shaft and universal shaft. The field application shows that the life of the screw drill as a whole has been improved remarkably with the maximum life of 316 h. The application in several wells has achieved a service life of over 260 h. As a result the unnecessary tripping operation is reduced, the penetration rate is improved and the cycle of well construction is shortened.

关 键 词：螺杆钻具 使用寿命 旁通阀 马达 万向轴 转动轴 设计改进 

分 类 号：TE921[石油与天然气工程—石油机械设备]