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. Release of Trapped Oil may require special methods. Addition of a Pumping Unit is required for most wells when natural pressure diminishes. Petroleum is pumped at a rate that won't deplete the well too quickly. To get more oil out of a well, additional recovery methods are required.