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1862 - |
John Eaton Company was established, known as Oil Well, to supply oilfield equipment |
1893 - |
National Supply Company was established |
1908 - |
Abegg and Reinhold Company was founded |
1913 - |
Union Tool Company introduced first rotary table |
1920 - |
National Supply Company acquired Union Tool Company |
1921 - |
Abegg and Reinhold began making rotary tools |
1930 - |
Emsco developed a line of duplex double acting slush mud pumps |
1930 - |
United States Steel acquired Oil Well |
1937 - |
Tuboscope was established |
1945 - |
National Supply introduced completely air controlled power rigs with drawworks and drives |
1958 - |
National Supply Company merged with Armco Steel Corporation |
1963 - |
Continental Emsco introduced the Electrohoist II Drawworks |
1968 - |
Rucker Corporation acquired Shaffer Tool Works, known as Rucker Shaffer |
1968 - |
National Supply designed a mechanical jacking system for mobile offshore jack-up rigs |
1969 - |
Continental Emsco introduced the F-1000 Triplex Mud Pump |
1973 - |
Abegg and Reinhold changed the company name to Varco International |
| 1975 - |
Rucker Shaffer acquired Koomey Control Systems
|
1977 - |
Kremco completed its first in-house designed workover rig |
1979 - |
Shaffer introduced the spherical blowout preventer |
1982 - |
Dreco introduced first 156' "Slingshot" mast and substructure rated for 2.5MM lb |
1982 - |
Varco International introduced the Top Drive |
1983 - |
Dreco designed the "Sandmaster" self-propelled workover/drilling rig for desert applications |
1984 - |
Griffith, part of Dreco, designed the "Torquemaster" breakout machine |
1987 - |
National Supply merged with USS Oilwell |
1989 - |
National Oilwell acquired Mission |
1990 - |
Totco was merged into Varco International and combined with Martin Decker to form M/D Totco |
1992 - |
Varco International acquired Shaffer
|
1993 - |
Dreco designed and constructed its first coiled tubing rig |
1994 - |
Thule Rigtech was acquired by Varco International |
1996 - |
Tuboscope Vetco Corporation acquired Drexel Oilfield Services |
1997 - |
National Oilwell acquired Ross Hill Controls |
1997 - |
National Oilwell acquired Dreco Energy Services |
1999 - |
National Oilwell with Hitec designed and constructed the first AC driven "Active Heave Compensating Drawworks" |
2000 - |
National Oilwell acquired Hitec ASA |
2000 - |
National Oilwell acquired Wheatley Gaso Omega |
2000 - |
Tuboscope Corporation merged with Varco International |
2002 - |
National Oilwell acquired Integrated Power Systems |
2002 - |
National Oilwell acquired Hydralift ASA |
2003 - |
National Oilwell acquired MonoFlo and Mono Group |
2005 - |
National Oilwell merged with Varco becoming National Oilwell Varco |
