E & P (Exploration & Production = Upstream)

The area of Petroleum Industry dealing with exploration and production of hydrocarbons (also called Upstream).

Exploration is split into three operational areas:			Petroleum Production is usually split into two operational areas:
Subsurface Exploration	Surface Exploration	Aerospace Exploration	Surface Production	Subsurface Production
			Surface Production is split into three major areas:	Subsurface Production is split into three major areas of activities:
			Production gathering Fluid supply and injection	Reservoir Study & Modelling Well & Reservoir Surveillance Well & Reservoir Management
			Routine production operations usually follow Production Strategy which is a part of Field Development Planning

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