OnePetro provides access to technical papers in the oil and gas exploration and production (E&P) industry produced by the following organisations among others:

American Petroleum Institute (API)
American Rock Mechanics Association (ARMA)
American Society of Safety Engineers (ASSE)
International Society for Rock Mechanics (ISRM)
NACE International
Offshore Technology Conference (OTC)
Society of Petroleum Engineers (SPE)
Society of Petrophysicists and Well Log Analysts (SPWLA)
Society of Underwater Technology (SUT)
World Petroleum Council (WPC)