( 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.
Petroleum Production is usually split into two operational areas:
and
The Surface Production is split into three major areas:
- Production gathering
and
- Fluid supply and injection
The Subsurface Production is split into three major areas of activities:
Routine production operations usually follow Production Strategy which is a part of Field Development Planning.