Reservoir Engineering - What is it?

It is concerned with reserves below the ground at depths of several kilometres.

The hydrocarbon accumulations (oil & gas) are mapped in 3D, as well as the characteristics of the fluid and rocks (types of fluids, porosity, permeability, gross & net thicknesses, etc).

The amount of oil, water and gas is then calculated; as well as the Reserves (ie. how much can be produced), which are often expressed in the form of forecasts

A mathematical model is usually built optimising these reserves. Some of the development options may be:

• different well locations and/or numbers
• different size of production facilities
• water or gas injection
• cash flow analyses

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