非API钻铤螺纹强度分析  

Strength Analysis on Non-API Drill Collar Thread

作　　者：赵旻昕[1] 

机构地区：[1]中国电子科技集团公司第二十二研究所,河南新乡453003

出　　处：《石油管材与仪器》2015年第6期32-34,共3页Petroleum Tubular Goods & Instruments

摘　　要：石油钻井过程中用的钻铤螺纹基本上都是符合API标准规范的。但是,随着随钻地质导向测量系统等产品系列化研制,为达到设计要求的目标,经常需要对钻铤螺纹的尺寸和扣型进行改动,钻铤螺纹很难符合API规范。为保证改动后的钻铤满足强度等技术指标要求,需要对非API标准规范的钻铤螺纹进行弯曲强度比、最小上扣扭矩和最大狗腿度等进行计算。为解决此类问题,文章针对非API钻铤应满足的强度指标进行了较为详细的分析及应用计算,得出一些有益的结论,对随钻测井仪器结构设计人员具有较好的借鉴意义。The thread parameters of drill collar used in oil well drilling should basically meet API standards. However,with the RD of LWD and MWD,the size and joint type of the thread are modified in most cases according to the well design requirements,so the modified thread parameters are always not in conformity with API standards. To ensure the strength of modified drill collar satisfying the technical specifications,its thread bending strength ratio,minimum make-up torque and maximum dogleg angle shall be calculated. Based on the above,detailed analysis and applied computing of non-API standard thread are presented in this thesis,some helpful conclusions are obtained with the hope to provide good references to structure designers of LWD and MWD tools.

关 键 词：钻铤 API 弯曲强度比 狗腿度 上扣扭矩 

分 类 号：TE921[石油与天然气工程—石油机械设备]