Hydraulic and earth engineering – Diving – Remote control
Patent
1987-09-22
1989-07-25
Taylor, Dennis L.
Hydraulic and earth engineering
Diving
Remote control
405229, 405196, 405195, 254102, E02B 1702
Patent
active
048507431
ABSTRACT:
An operator for levelling a drilling or production template on the sea bed is formed from a rotatable hydraulic cylinder, a piston within the cylinder to which hydraulic pressure can be applied, and a drive shaft from the piston to a screw jack. Hydraulic pressure applied to the piston counteracts the weight of the template so that the operator can rotate the screw jack with relatively little torque. The operator may fit into a housing of the template through an intermediate housing. The operator and the intermediate housing may be releasably locked to each other and the template so that they can be recovered for re-use. A cementing/retrieving tool and a suspension tool may be used in combination with the operator.
the screw jack may bear onto a mud mat or pile of the template.
REFERENCES:
patent: 4212562 (1980-07-01), Stone et al.
patent: 4684291 (1987-08-01), Hopper
Taylor Dennis L.
The British Petroleum Company p.l.c.
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