Compagnie Générale de Géophysique (CGG), Massy, France, (NYSE: GGY) has closed the acquisition of Veritas DGC Inc., Houston, (NYSE: VTS) for US$3.1 billion in cash and stock. Veritas provides integrated geophysical information and services to the petroleum industry worldwide. The merged company has a seismic fleet with 20 vessels, including 14 high-capacity 3-D vessels, and land crews operating with equivalent capacity in both the Western and Eastern hemispheres.