WesternGeco is not a tiny lizard in the desert Southwest that sells insurance, but a giant seismic monitoring company that provides reservoir imaging, monitoring, and development services to oil and gas clients worldwide. A subsidiary of oil field services giant Schlumberger, the company's operations include land and marine seismic products and services, as well as multiclient services (including extensive libraries of survey data and database analysis). WesternGeco provides 3-D, 4-D, and multicomponent surveys. The company's Reservoir Services advanced seismic technologies enable it to cater to not only oil and gas drillers, but reservoir and petroleum engineers, and appraisal and production experts as well.