petroleum geology

is brach of geology that study origin,accumulation and migration of petroleum 
it is one the most highest salary career,
petroleum have number of name that include black gold hydrocarbon and etc.
petrleum geology is different from petroleum geology because petroleum geology deals about exploration of petroleum it also deals where it  accumulates ant also  physical and chemical properties of petroleum ,while petroleum engineering study on how to drill or how to extract petroleum form subsurface area.