Drill string heave compensator and latching apparatus

Details Drill string heave compensator and latching apparatus Drill string heave compensator and latching apparatus

1975-10-14

1978-03-07

Blunk, Evon C.

Implements or apparatus for applying pushing or pulling force

Step-by-step traveling bar

Pawl actuated

175 5, 254189, B66D 148

Patent

active

RE0295655

ABSTRACT:
A floating drilling derrick is provided with a split crown block and an opening to allow passage of a heave compensator cylinder which is secured to a lower traveling block. The piston rod of the compensator is secured to a drill string carrier. Coupling means are provided in the traveling block and carrier to selectively lock out the heave compensator. The traveling block and carrier are kept in proper orientation by guides thereon cooperating with guide rails on the derrick.

REFERENCES:
patent: 3336003 (1967-08-01), Crooke et al.
patent: 3526425 (1970-09-01), Langowski et al.
patent: 3714995 (1973-02-01), Hanes et al.
patent: 3841607 (1974-10-01), Larralde et al.

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