Petroleum engineers plan and supervise drilling and well-completion programs, design and select drilling and production equipment, estimate reserves, and manage oil and gas properties. A petroleum engineering graduate may obtain a responsible position with an oil company, establish a consulting business, or become an independent oil producer. In general, a petroleum and natural gas engineer may find employment with any industry, state, or federal institution which requires a specialist in activities related to producing and injecting fluids by means of wellbores.