( see also Upstream @ Wikipedia )
The area of Petroleum Industry dealing with exploration and production of hydrocarbons and also called Upstream.
Drilling is essential part of both exploration and production.
Exploration is split into three operational areas: | Petroleum Production is usually split into two operational areas: | |||
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Subsurface Exploration | Surface Exploration | Aerospace Exploration | ||
The Surface Production is split into three major areas: | The Subsurface Production is split into three major areas of activities: | |||
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Routine production operations usually follow Production Strategy which is a part of Field Development Planning |