Back to results
US 4,046,192 AGranted
Method and apparatus for installing a control valve assembly on an underwater well head
AssigneeSeal Petroleum Limited
InventorsEric Darnborough, Rene Henri Coulboy
Life of this patent
Estimating the term…
Abstract
A method of installing a valve-bearing assembly on an underwater oil well head and for checking the sealing-tightness of the pipes connected thereto, in a single operation without the use of a diver, comprises coupling the assembly to a tool connected to riser of a surface support and which includes means for connection and checking of the assembly controlled from the surface support.
Claims17
A method of installing an underwater assembly comprising at least one master valve on an underwater oil well head, comprising the steps of:
- lowering in a non-rigid manner by remote guidance and propulsion means connected to a tool comprising a first connection means for connection of said tool to said assembly, second connections means for connecting said assembly to said well head, means for checking the sealing-tightness of any circuits required;
- controlling from the surface said first and second connection means, and for controlling any elements required inside said well;
- raising said tool after checking said circuits;
- and actuation of means for disconnection of said first connection means, wherein said operations are controlled from the surface by means of flexible connections providing the required power.
1 more element
Dependencies are inferred from the claim text.