Inventor
CHITTY GREGORY H
US6 patents
Patents
6 patentsUS7066247B2Jun 27, 2006
Methods and apparatus for drilling with a multiphase pump
WEATHERFORD LAMB16 citations90
US6966367B2Nov 22, 2005
Methods and apparatus for drilling with a multiphase pump
WEATHERFORD LAMB37 citations90
US7178592B2Feb 20, 2007
Closed loop multiphase underbalanced drilling process
WEATHERFORD LAMB14 citations81
US7654319B2Feb 2, 2010
Closed loop multiphase underbalanced drilling process
WEATHERFORD LAMB6 citations71
US6929068B2Aug 16, 2005
Non-cryogenic production of nitrogen for on-site injection in well clean out
WEATHERFORD LAMB11 citations71
US6494262B1Dec 17, 2002
Non-cryogenic production of nitrogen for on-site injection in well clean out
WEATHERFORD LAMB12 citations71