Apparatus for compensating for the heaving of a floating drillin

Details Apparatus for compensating for the heaving of a floating drillin Apparatus for compensating for the heaving of a floating drillin

1976-04-07

1978-04-25

Phillips, Charles E.

Geometrical instruments

Area integrators

Electrical

731515, 175 7, G01B 312

Patent

active

040855090

ABSTRACT:
Apparatus adapted to compensate for the heaving of a floating offshore drilling platform, which heaves relative to the ocean bottom due to wave action of the water in which the platform is floating, which heave-compensation apparatus is adapted to be connected to apparatus for measuring the rate of penetration of pipe run into a well beneath the floating platform. The heave-compensating apparatus nullifies the effect of movement of the drilling platform relative to a stationary object, such as a riser pipe beneath the platform, so that false or erroneous reading on the rate of penetration measuring apparatus is prevented.

REFERENCES:
patent: 2806372 (1957-09-01), Arps
patent: 3891038 (1975-06-01), Delestrade et al.
patent: 3931735 (1976-01-01), Guigmard

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