Geophysical Services

1930
   • Reflection seismograph technology applied to geophysical exploration
   • Recording oscillograph adapted for seismic data.
   • GSI fields 12 crews in US

1931
   • Field Crews Enter Mexico, first foreign operations for GSI

1932
   • Exploration begins in Western Canada
   • Standard GSI rotary drill rig developed

1933
   • New exploration in Quebec, Canada

1934:
   • Original laboratory in Newark, New Jersey, moved to Dallas
   • First seismic reflection work done in Venezuela

1936:
   • Field crews sent into Colombia

1937
   • Field parties dispatched to Saudi Arabia, Java, Sumatra, Ecuador

1938
   • Field crews enter New Guinea

1939
   • Field work done in Panama, India, Persian Gulf

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1941
   • GSI crews drop from 26 to six as World War II begins

1942
   • GSI stays in business with defense contracts

1947
   • Gravimeter developed for broad geological surveys

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1953
   • GSI/TI launches first seismic ship, M/V Sonic

1954
   • magneDISC developed for recording seismic data in the field
   • High-resolution seismic system developed

1956
   • seisMAC hybrid computer developed to process seismic data digitally

1958
   • Analog-Digital-Analog converter developed, handling 40K samples a second

1959:
   • Data Analysis & Reduction Computer produced, TI’s first digital computer
   • Explorer solid-state field system (FS8000) released

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1961
   • First Digital Field System for seismic data delivered to customer

1962:
   • Field crews use Digital Field System for the first time

1964:
   • Transistor-based Digital Field System announced publicly

1965:
   • GSI/TI part of Project Vela, detecting underground nuclear explosions

1966:
   • Development of Advanced Scientific Computer (ASC) begins
   • First integrated circuit-based Digital Field System released

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1970:
   • DFS IV – Improved Digital Field System – sees wide use in marine surveys

1971:
   • ASC becomes operational – world’s fastest digital computer

1975
   • GSI/TI processes first 3-D seismic surveys
   • DFS V developed, incorporating significant improvements with CMOS chips

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1980
   • DFS VI provides increased recording channels, shorter sampling intervals

1983
   • DFS VII released, incorporating digital telemetry

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