Editing Geophysical Service (section)

{{short description|American oil and gas exploration company}}
{{tone|date=February 2024}}
{{Infobox company
|name = Geophysical Service Inc.
|foundation = 1930
|location = [[Dallas]], Texas, U.S.
|homepage = {{official URL}}
}}
[[File:Geophysical Service Incorporated (logo).jpg|right]]
'''Geophysical Service Inc.''' (often abbreviated '''GSI''') was a Texas-based company founded by [[J. Clarence Karcher|John Clarence Karcher]] and [[Eugene McDermott]] in 1930,<ref>{{Cite web |title=About Us |url=https://www.geophysicalservice.com/index.php?mode=webpage&id=615#:~:text=The%20original%20GSI%20was%20founded%20in%201930%20to%20offer%20the%20first%20ever%20reflection%20seismograph%20exploration%20services%20to%20the%20oil%20industry |access-date= 28 February 2024 |website=Geophysical Service}}</ref> for the purpose of using refraction and [[reflection seismology]] to [[Hydrocarbon exploration|explore]] for [[petroleum]] deposits.