Elevator sensor

Details Elevator sensor Elevator sensor

2007-02-27

2007-02-27

Bagnell, David (Department: 3672)

Wells

Processes

With indicating, testing, measuring or locating

C166S077520, C166S066000, C175S040000, C700S303000

Reexamination Certificate

active

10728443

ABSTRACT:
At least one sensor is mounted for monitoring the vertical position of an elevator relative to selected features on a tubular string. A variety of sensor types is provided. Optional mounting arrangement permits the sensors to be situated close to a tubular and free to move laterally. Excess lateral movement of the tubular moves the mounting; thus, reducing the shock to the sensors. In an additional embodiment, a sensor can provide position indication for tools or other equipment being lowered into the wellbore or into a tubular. In yet another embodiment, sensors are mounted to both indicate selected features on a tubular string and the position of tools being lowered into the tubular string.

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