Process of water invasion from Aquifer into oil reservoir or gas reservoir due to pressure depletion.
The aquifer drive can be weak or strong depending on aquifer volume and water mobility comparing to mobility of oil and gas and contact geometry.
Fig. 1. Aquifer Drive schematics |
Unfortunately, in many practical cases the detailed information on the Aquifer is not available. Besides many practical applications (pressure and flow simulations) require only knowledge of water influx from aquifer under pressure depletion. This allows building an Aquifer Drive Models using analytical methods.
The most accurate way to simulate Aquifer Expansion (or shrinkage) is full-field 3D Dynamic Flow Model where Aquifer Expansion is treated as one of the fluid phases and accounts of geological heterogeneities, gas fluid properties, relperm properties and heat exchange with surrounding rocks.
See Also
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Field Study & Modelling
[ Depletion ] [ Aquifer ] [ Aquifer Drive @model ]