Inventor
KAHIL JOHN E
US4 patents
Patents
4 patentsUS4636727AJan 13, 1987
Method and apparatus for detecting the location of defects in tubular sections moving past a well head
PA INC26 citations91
US4710712ADec 1, 1987
Method and apparatus for measuring defects in ferromagnetic elements
PA INC49 citations89
US4492115AJan 8, 1985
Method and apparatus for measuring defects in ferromagnetic tubing
PA INC42 citations89
US4715442ADec 29, 1987
Apparatus for servicing tubular strings in subterranean wells
PA INC47 citations86