In March 1931, SPE and Société Géophysique de Recherches Minières (SGRM), both specialists in seismology and magnetometry, merged into La Compagnie Générale de Géophysique.
Veritas Energy Services, a geophysical services company, was established in 1974 in Calgary, Canada with the purchase of Rafael B. Cruz and Associates Ltd. by David B. Robson.