Inventor
HILSMAN YOUEL G
US4 patents
Patents
4 patentsUS7063164B2Jun 20, 2006
System and method to seal by bringing the wall of a wellbore into sealing contact with a tubing
SCHLUMBERGER TECHNOLOGY CORP20 citations91
US7152689B2Dec 26, 2006
System and method to seal by bringing the wall of a wellbore into sealing contact with a tubing
SCHLUMBERGER TECHNOLOGY CORP8 citations72
US7543652B2Jun 9, 2009
Subsurface annular safety barrier
SCHLUMBERGER TECHNOLOGY CORP4 citations57
US7140447B2Nov 28, 2006
Subsurface annular safety barrier
SCHLUMBERGER TECHNOLOGY CORP1 citations47