COSL Geophysical is the major geophysical services supplier offshore China, meanwhile has operations throughout Southeast Asia, Europe, Arctic, Latin America, Africa and Middle East. COSL has provided superior services for many oil companies globally and was highly praised by the customers.

COSL owns and operates 5 streamer vessels, 4 OBS (OBC+OBN) vessels and 2 multifunctional support vessels. With advanced equipment, qualified personnel and rich global experience, COSL is capable of acquiring 34,000 km2 3D, 3,000 km2 OBC/OBN seismic data every year.