Petroleum Engineering Discipline

In Petroleum Engineering, There are 3 kinds of discipline
1. reservoir engineering.
Reservoir engineering is science that learn about how to predict the amount of reserve, characteristic, of fluid in the subsurface including the formation pressure.
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2.production engineering.
Learning about how to produce fluid so that reach surface, including technologies that can be applied when the well ready.
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3. drilling engineering.
Learning about design and execution of drilling after know the point of drilling location that will be used as well hole