Device For Storage Of Tubulars, Apparatus For Handling Tubulars And A Method For Disassembling A Pipe String
First Claim
1. An apparatus for storing tubulars on a floating semi-submersible drilling and/or production vessel, comprising a storage device for storing tubulars in a submerged position, essentially below a splash zone, characterised in that the storage device is generally open to the surroundings so that the tubulars are externally exposed to surrounding water.
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus for storing tubulars on a floating semi-submersible drilling or production vessel. The apparatus comprises a storage device for storing tubulars in a submerged position, essentially below a splash zone. The storage device is generally open to the surroundings so that the tubulars are externally exposed to surrounding water. It is also described an apparatus for transporting tubulars between a storage and a derrick on an offshore drilling and/or production platform having a platform deck. The apparatus is situated below the platform deck and is adapted for movement under the platform deck. A method for disassembling a pipe string is also described.
-
Citations
17 Claims
- 1. An apparatus for storing tubulars on a floating semi-submersible drilling and/or production vessel, comprising a storage device for storing tubulars in a submerged position, essentially below a splash zone, characterised in that the storage device is generally open to the surroundings so that the tubulars are externally exposed to surrounding water.
- 14. Apparatus for transporting tubulars between a storage and a derrick on an offshore drilling and/or production platform having a platform deck, characterised in that it is situated below the platform deck and is adapted for movement under the platform deck.
-
17. Method for disassembling a pipe string on an offshore drilling and/or production platform having a deck and a derrick, characterised in:
-
hanging off a lower part of the string at a level below the platform deck, disconnected the string above the hang off level, moving the lower part of the sting away from the drilling axis, bringing a retrieving apparatus into the drilling axis, transferring the upper part of the string to the retrieving apparatus, moving the retrieving apparatus and the upper part of the string away from the drilling axis, moving the lower part of the string into the drilling axis, lifting the lower part of the string into the derrick, repeating the previous steps until the string has been disassembled.
-
Specification