E - Fixed Constructions – 02 – B
Patent
E - Fixed Constructions
02
B
61/8
E02B 17/00 (2006.01) E21B 19/00 (2006.01) E21B 19/09 (2006.01)
Patent
CA 1170063
-15- Abstract A motion compensator for disposition between an offshore support and an offshore well string or the like movable with respect to the support comprises first and second compensator bodies interconnected with the support and the well string such that relative movement between the support and well string causes relative movement between the compensator bodies. The compensator bodies are further interconnected with each other for relative movement in generally vertical directional modes. A compressible fluid or the like is associated with the com- pensator bodies for resiliently resisting relative movement therebetween in a first directional mode. A position indicator associated with the compensator bodies comprises a flexible vessel having one end connected to one of the compensator bodies and the other end connected to the other compensator body generally below the one end. The vessel is filled with a liquid between its two ends, and a pressure sensitive transmitter is associated with the lower end and operative to produce a signal which is a function of the hydraulic head at said lower end
403799
Beakley Bruce
Nayler Douglas W.j.
Kirby Eades Gale Baker
Nl Industries Inc.
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