指重表现场校准方法研究

Research on Field Calibration Method of Weight Indicator

指重表主要用于石油地质勘探中各种钻机修井机作业过程中,是指示并记录钻具悬重和钻压变化的一种仪器。现有检测方式只能进行实验室检测,存在拆卸搬运不便的问题。针对此现状,提出了指重表现场校准的实现方法及步骤,试验证明采用该方法能够实现现场校准,方便快捷,提高了效率、降低了工作强度。同时,阐述了张力传感器的标定方法及应用过程中应注意的问题。

The weight indicator is mainly used in various drilling rigs, workover rigs, and it is an instrument for indicating and recording the variation of drill string weight and drill pressure. The calibration of the weight indicator using existing calibration methods can only finished out in laboratory, but the handling and removing of the weight indicator is inconvenient. For this reason, a field calibration meth- od of weight indicator and its steps are put forward. The test proved that the method can realize the field calibration of the weight indicator, fast and eonvenient, and it improves the efficiency and reduces work intensity. At the same time, the calibration method of the tension sensor is introduced and the problems that should be paid attention to in the application process of it are presented.