方补心扭矩仪研制及应用

准确测量扭矩,不但可以为设计合理的钻具组合提供依据,而且也可以通过对钻柱扭矩信号进行处理来判断井下工况。目前国内外对有关钻柱扭矩测量研究工作有一定进展,但在测量精度和可靠性方面仍不够理想。通过改造方补心,研制了方补心扭矩仪,可直接测量钻柱扭矩。它包括发射器、接收机和测量传感器。室内实验和现场应用证实方补心扭矩仪工作可靠,解决了长期困扰钻井界的钻柱扭矩测量问题。

DEVELOPMENT AND APPLICATION OF KELLY BUSHING TORQUE GAUGE

For accurate measurement torque, it does not only provide reference for design of optimum drilling assembly, but also be useful to judge downhole operating mode through processing drill string torque signal. At present, there is a certain progress in the work concerned with the researches of drill string torque measurement at home and abroad, but in the aspect of torque measurement accuracy and reliability, it is still imperfect. Therefore, in this paper, kelly bushing torque gauge that consists of launcher, receiver, measurement transducer has been developed through reconstruct kelly bushing. It can measure directly drill string torque. Lab. test and field application proved that operation of kelly bushing torque gauge was reliable, meanwhile, it solved the torque measurement problem that has been a puzzle in drilling industry for a long time.