Inventor

HAVIRA R MARK

US7 patents

⚠️ This page may combine multiple inventors who share the name “HAVIRA R MARK”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SCHLUMBERGER TECHNOLOGY CORP

4 patents

US4255798AMar 10, 1981

Method and apparatus for acoustically investigating a casing and cement bond in a borehole

SCHLUMBERGER TECHNOLOGY CORP217 citations97

US4733380AMar 22, 1988

Apparatus and method for acoustically investigating a casing set in a borehole

SCHLUMBERGER TECHNOLOGY CORP86 citations94

US4382290AMay 3, 1983

Apparatus for acoustically investigating a borehole

SCHLUMBERGER TECHNOLOGY CORP69 citations94

US4885723ADec 5, 1989

Acoustic apparatus and method for detecting borehole wall discontinuities such as vertical fractures

SCHLUMBERGER TECHNOLOGY CORP35 citations92

SCHLUMBERGER DOLL RESEARCH

1 patent

US4692908ASep 8, 1987

Method and apparatus for investigating stand-off in a borehole

SCHLUMBERGER DOLL RESEARCH95 citations93

PANDROL JACKSON TECH INC

1 patent

US5578758ANov 26, 1996

Rail investigating ultrasonic transducer

PANDROL JACKSON TECH INC41 citations89

EKSTROM MICHAEL P

1 patent

US4979151ADec 18, 1990

Method and apparatus for investigating stand-off in a borehole

EKSTROM MICHAEL P30 citations88