| 摘要 |
A method and monitoring system 12 to enable monitoring and/or recording of the movement of objects moving in or out of a hole or wellbore. The system includes sensors located at the wellbore entrance/head 11. The sensors detect parameters of an object 14 moving in and out of the wellbore. An algorithm or model interrogation sunit 21 to identify parameters of the object moving in/out of the well. Preferably the sensors are of the type inductive, electrical, magnetic, electromagnetic, optical, acoustic, sonic, spectroscopic, radiation, camera. Preferably the object is a drill bit 14, drill string and/or associated drilling equipment, pipe, liner, casing, tubing, coiled tubing, tubing hanger, control line, packer, valve, logging tool. Preferably the parameters are movement, speed, flow, vibration, noise, mass. The system could use the information available to provide a means 22 of informing the user on the state of the operation and/or raise an alarm if the information indicates a deviation from the expected process. |
