Inventor
CALDER IAN DOUGLAS
US3 patents
Patents
3 patentsUS6457529B2Oct 1, 2002
Apparatus and method for returning drilling fluid from a subsea wellbore
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US6520253B2Feb 18, 2003
Rotating drilling head system with static seals
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US6871708B2Mar 29, 2005
Cuttings injection and annulus remediation systems for wellheads
VETCO GRAY INC ABB15 citations81