Inventor
HUNKA JOHN
US5 patents
Patents
5 patentsUS6577244B1Jun 10, 2003
Method and apparatus for downhole signal communication and measurement through a metal tubular
SCHLUMBERGER TECHNOLOGY CORP167 citations98
US6975243B2Dec 13, 2005
Downhole tubular with openings for signal passage
SCHLUMBERGER TECHNOLOGY CORP43 citations95
US6903660B2Jun 7, 2005
Inductively-coupled system for receiving a run-in tool
SCHLUMBERGER TECHNOLOGY CORP41 citations95
US7692428B2Apr 6, 2010
Retrievable formation resistivity tool
SCHLUMBERGER TECHNOLOGY CORP11 citations92
US7187297B2Mar 6, 2007
Methods for sealing openings in tubulars
SCHLUMBERGER TECHNOLOGY CORP8 citations73