Inventor
ROTHERS DAVID E
US5 patents
Patents
5 patentsUS5558153ASep 24, 1996
Method & apparatus for actuating a downhole tool
BAKER HUGHES INC245 citations98
US6414905B1Jul 2, 2002
Method and apparatus for communicating coded messages in a wellbore
BAKER HUGHES INC104 citations95
US5856790AJan 5, 1999
Remote control for a plug-dropping head
BAKER HUGHES INC71 citations95
US5579283ANov 26, 1996
Method and apparatus for communicating coded messages in a wellbore
BAKER HUGHES INC76 citations95
US5590713AJan 7, 1997
Remote control for well tool
BAKER HUGHES INC33 citations92