System for the displacement of a blowout prevention safety valve and method for displacing said valve
AssigneeInnovo Engineering and Construction Ltd
InventorsAndrea Tiberio, Stefano Malagodi
Life of this patent
Estimating the term…
Abstract
System for displacing a blowout prevention safety valve, which has an overhead crane mounted on a suspended rail and provided with a winch for lifting and transporting the safety valve from a parking zone to a drilling area, where a crane is placed on which the safety valve is hung. A coupling device is mounted on the overhead crane, such that the overhead crane can be moved between the parking zone and the drilling area, having both the winch and the coupling device connected to the safety valve. In the drilling area, the coupling device are disengaged from the safety valve, while the crane and the winch are maintained connected to the safety valve in order to lower it to an operating position.
Claims9
A system for displacing a blowout prevention safety valve for a watercraft provided with an oil drilling tower, said system comprising:
- a support structure, intended to be installed on said watercraft and comprising a resting platform and a suspension platform placed at a top part of said support structure spaced with respect to said resting platform;
- a lifting device, which is mechanically mounted on said resting platform to support said safety valve, and is movable between a lowered position, in which said lifting device supports said safety valve in proximity to said resting platform, and a raised position, in which said lifting device supports said safety valve in a lifted position in proximity to said suspension platform;
- a rail mechanically associated with the suspension platform of said support structure and extending along a transfer path intended to connect a parking area which is susceptible of being associated with the drilling tower of said watercraft;
- an overhead crane slidably mounted on said rail along said transfer path, and comprising a lifting winch susceptible of supporting said safety valve in said parking area above said lifting device;
- a crane, which is provided with a connection member, is mounted at said drilling area, and is susceptible of supporting said safety valve by means of said connection member in said drilling area substantially aligned with an axis of said drilling tower;
- a coupling device, which is mechanically mounted on said overhead crane and is movable between an engagement position, in which said coupling device retains said safety valve, and a disengagement position, in which said coupling device is released from said safety valve;
- wherein said overhead crane is configured to be moved along said rail between said parking area, in which said overhead crane supports said safety valve in the lifted position, and said drilling area, in which said overhead crane supports said safety valve above said drilling area with said lifting winch mechanically connected to said safety valve and said coupling device in said engagement position;
- wherein said crane and/or the lifting winch of said overhead crane is configured to displace said safety valve from said lifted position to a lowered operative position in said drilling area with said lifting winch and said crane connected to said safety valve and with said coupling device in said disengagement position.
Dependencies are inferred from the claim text.