Inventor
ZUVELA BERNARD R
6 patents
Patents
6 patentsUS4181014AJan 1, 1980
Remote well signalling apparatus and methods
SCIENT DRILLING CONTROLS109 citations94
US4325438AApr 20, 1982
Lengthening drill string containing an instrument
SCIENT DRILLING CONTROLS37 citations90
US4157619AJun 12, 1979
Inclination and direction responsive apparatus
SCIENT DRILLING CONTROLS32 citations90
US4143721AMar 13, 1979
Change in length of drill string containing an instrument
SCIENT DRILLING CONTROLS20 citations80
US4153120AMay 8, 1979
Change in length of drill string while instrument remains therein
SCIENT DRILLING CONTROLS19 citations71
US4139950AFeb 20, 1979
Direction responsive flux gate unit
SCIENT DRILLING CONTROLS6 citations60