Abstract
This paper presents a proposed development plan of an oil onshore reservoir replica. The reservoir comprises sandstones with moderately high porosity/permeability distribution. Recoverable oil from the reservoir is 527 million barrels through primary energy, found to be gravity drainage and an underlying aquifer. The reservoir sits at 7840ft from below sea level with area of 2400acres.
The structure of the reservoir showed three (3) major faults compartmentalizing the reservoir into four (4) fluid-in-place regions, two (2) of such accounted for 70% of the water production. Smart wells were drilled to control water production from such zones, wherein Inflow control valves (ICVs) were designed and optimized for selective shutoff or delay of water production, in effect increasing recovery. Horizontal and highly deviated wells' trajectory and displacement was also considered because of potential non-sealing faults that divided the reservoir into layers or compartments.
Optimization of proposed development plan was done with objective function of maximizing ultimate recovery (UR) via fluid production till reservoir abandonment. This could be used proxy optimization models for part or group of reservoirs in a big field.
This paper reiterates the importance/role of reservoir modeling and simulation with and necessary sensitivities that will assure optimized full field reservoir development.
