Inventor
SHARKI MARTIN J
5 patents
Patents
5 patentsUS4143880AMar 13, 1979
Reverse pressure activated rotary drill head seal
DRESSER IND70 citations92
US4253530AMar 3, 1981
Method and system for circulating a gas bubble from a well
DRESSER IND40 citations89
US4010012AMar 1, 1977
Total gas containment system
DRESSER IND38 citations86
US4420391ADec 13, 1983
Screen tensioning arrangement
DRESSER IND19 citations71
US4269567AMay 26, 1981
Mud degasser pump
DRESSER IND9 citations62