The Comprehensive Oilfield Service & Supply Database (COSSD) is the #1 energy services directory in North America. COSSD can be found both online and in print. Here you will find anyone and everyone who is in the oil industry in every capacity you can think of. Products and services you need from rigs, to equipment rental to food services and uniforms for your crew. Comprehensive is in the title of our directory because it's just that, the most comprehensive source for the oilpatch.