Triple activity drilling ship
First Claim
Patent Images
1. A method comprising:
- making and connecting tubulars on a ship while the ship is en route to a drilling site;
extending said tubulars below said ship before arriving at the drilling site and while en route to said site;
running a marine riser and blowout preventer into the sea from a first tubular handling center;
at the same time the marine riser and blowout preventer are being run, running a conductor; and
refraining from running said marine riser and blowout preventer when said conductor is in contact with the seabed floor.
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Abstract
A triple activity drilling ship may be provided with two separate drilling centers, each including drilling apparatus. In addition, a trolley that is capable of supporting tubulars may be positioned between a first position within one of said drilling centers and a second position outside that drilling center. As a result, the trolley may be used to hold assembled tubulars while other activities are ongoing in one or more of the drilling centers.
25 Citations
13 Claims
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1. A method comprising:
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making and connecting tubulars on a ship while the ship is en route to a drilling site; extending said tubulars below said ship before arriving at the drilling site and while en route to said site; running a marine riser and blowout preventer into the sea from a first tubular handling center; at the same time the marine riser and blowout preventer are being run, running a conductor; and refraining from running said marine riser and blowout preventer when said conductor is in contact with the seabed floor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification