Deep water drilling with casing

The invention relates to methods and apparatus to place a conductor pipe and a casing in a subsea environment. The method comprises positioning a first casing in a wellbore, providing a drilling assembly having a second casing, a conveying member having a diameter less than the second casing. A tubu...

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Bibliographic Details
Main Authors MARK J MURRAY, GREGORY GUY GALLOWAY, DOUG REID, RICHARD L GIROUX, ALBERT C ODELL II
Format Patent
LanguageEnglish
Published 27.09.2006
Subjects
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Summary:The invention relates to methods and apparatus to place a conductor pipe and a casing in a subsea environment. The method comprises positioning a first casing in a wellbore, providing a drilling assembly having a second casing, a conveying member having a diameter less than the second casing. A tubular adapter for coupling the conveying member to the second casing, wherein the tubular adapter is adapted to transfer torque from the conveying member to the second casing, a drilling member disposed at a lower end of the second casing, lowering the drilling assembly into the first casing and coupling the second casing to the first casing. A later embodiment relates to a method for lining a portion of a wellbore comprising rotating a casing assembly into the wellbore.
Bibliography:Application Number: GB20060004044