06899186 is referenced by 49 patents and cites 489 patents.

The present invention generally relates to methods for drilling a subsea wellbore and landing a casing mandrel in a subsea wellhead. In one aspect, a method of drilling a subsea wellbore with casing is provided. The method includes placing a string of casing with a drill bit at the lower end thereof in a riser system and urging the string of casing axially downward. The method further includes reducing the axial length of the string of casing to land a wellbore component in a subsea wellhead. In this manner, the wellbore is formed and lined with the string of casing in a single run. In another aspect, a method of forming and lining a subsea wellbore is provided. In yet another aspect, a method of landing a casing mandrel in a casing hanger disposed in a subsea wellhead is provided.

Title
Apparatus and method of drilling with casing
Application Number
10/319792
Publication Number
6899186 (B2)
Application Date
December 13, 2002
Publication Date
May 31, 2005
Inventor
David J Brunnert
Houston
TX, US
Gregory G Galloway
Conroe
TX, US
Agent
Moser Patterson & Sheridan
Assignee
Weatherford Lamb
TX, US
IPC
E21B 047/01
G05B 019/418
G05B 019/4068
E21B 007/20
E21B 007/20
E21B 010/32
E21B 010/60
E21B 023/00
E21B 007/20
E21B 019/00
E21B 010/66
E21B 043/10
E21B 007/06
E21B 019/16
E21B 019/16
E21B 019/16
E21B 019/16
E21B 023/00
E21B 023/00
E21B 004/18
E21B 033/14
E21B 007/06
E21B 007/20
E21B 007/18
E21B 007/06
E21B 007/08
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