Oil companies are seeking to open up these lands for drilling. Sites include Alaska, continental U.S. and off our shores. The only way to prove there's oil in a promising site to drill. At intervals, the drill pipe must be pulled up and the drill bit changed. The oil industry is improving methods of preventing and cleaning up oil spills.
Ocean drilling is dangerous.
Oil companies are searching for new ways to prevent accidents and protect workers. When a petroleum reservoir is reached, drilling stops. Installation of Pipes and valves to control the flow of petroleum is always necessary. Oil is often under pressure from underground gas or water. This may force oil to the surface.