Method and apparatus for conducting subaqueous operations in ice

Details Method and apparatus for conducting subaqueous operations in ice Method and apparatus for conducting subaqueous operations in ice

1976-04-30

1978-01-17

Shapiro, Jacob

Railways

Droppings catcher

61103, 104 35, 105163R, 175 7, E02B 1700, E21B 1500

Patent

active

040684873

ABSTRACT:
An improved platform for performing subaqueous operations in ice conditions. A substructure on the platform supports the equipment for performing the subaqueous operation and straddles an aperture through the platform. Means are secured to the underside of the substructure for presenting a relatively low coefficient of friction or low lateral resistance between the underside of the substructure and the face of the platform. Locomotion means are associated with substructure for moving the substructure laterally over the face of the platform relative to the aperture whereby the equipment for performing the subaqueous operations may remain over the wellhead in spite of certain magnitudes of lateral movement of the platform responsive to the ice conditions.

REFERENCES:
patent: 516032 (1894-03-01), Symonds
patent: 673622 (1901-05-01), Moore
patent: 1128039 (1915-02-01), Piercy
patent: 3033525 (1962-05-01), Johnson
patent: 3171363 (1965-03-01), Eden et al.

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