| 摘要 |
The invention relates to a method of drilling and lining a plurality of subsea wellbores with wellbore lining tubing, and to subsea assemblies for use in the drilling and lining of a subsea wellbore. The invention also relates to devices for use in such a method/assemblies. In one embodiment, a method of drilling a plurality of subsea wellbores and of lining the wellbores with wellbore-lining tubing (5) in a single trip is disclosed, the method comprising the steps of: locating a first guide pipe and at least a second guide pipe (8) in a seabed; deploying a string of wellbore-lining tubing (5) from surface; mating the wellbore-lining tubing (5) with the first guide pipe (8); drilling a first wellbore through the first guide pipe (8) using the wellbore-lining tubing (5); separating a first part of the wellbore-lining tubing (5) located in the first wellbore from a remainder of the tubing, leaving the first part of the tubing in the wellbore; mating the wellbore-lining tubing (5) with the second guide pipe (8); drilling a second wellbore through the second guide pipe (8) using the wellbore-lining tubing (5); and separating a second part of the wellbore-lining tubing (5) located in the second wellbore from a remainder of the tubing, leaving the second part of the tubing in the wellbore. |
