A part of Petroleum Industry related to exploration and production of hydrocarbons (also called Exploration & Production or E&P)
It is essentially based on the knowledge areas of Subsurface E&P Disciplines.
The primary subject of E&P is exploration of a new or acquisition of existing Petroleum Asset and maintaining a profitable production from it.
The Upstream industry is split into two major operational areas: Petroleum Exploration and Petroleum Production.
Petroleum Industry (Oil & Gas Industry)