钻井过程中大钩位移测量及程序设计

MEASUREMENT OF HOOK SHIFT DRILLING AND COMPUTATION PROGRAM DESIGN

介绍了在钻井过程中大钩位移及其相关的几个钻井参数获取原理,分析了利用滑轮光电式传感器及绞车磁电式传感器测量大钩位移的方法.给出了计算机实时获取大钩位移脉冲信号的算法及程序设计.现场实验证明,滑轮光电式传惑器测量精度高,但安装较复杂,机械加工工艺要求高;磁电式传感器安装方便、结构简单、寿命长,采用一定算法后,可使测量精度大大提高,能够满足工程需要.

The Principle of aquisition of hook shift and some relevant parameters for drilling is introduced. The methods for measuring hook shift with the photoelectric sensor on the pulley or with the magnetelectric sensor on the drawworks are descrived. The algorithm for real-time computer aquistion of the pulse signal is given. Field test proved that the photoelectric sensor oh the pulley is more accurate in measurement, but is complicated in machining and assembling. The magnetoelectric sensor on the drawworks is easy to install and simple in structure and has a long life. The measurement accuracy can be greatly improved with the use of a special algorighm.