Inventor

LAUER STEPHEN D

3 patents

Patents

3 patents

US4247312AJan 27, 1981

Drilling fluid circulation system

CONOCO INC98 citations92

US4597067AJun 24, 1986

Borehole monitoring device and method

CONOCO INC37 citations89

US4295536AOct 20, 1981

Pressure seal for pumping instruments through drill rod

CONOCO INC6 citations59