New Understanding of Transient Pressure Response in the Transition Zone of Oil-Water and Gas-Water Systems
Table 2
The designs of different flow conditions.
Fluid
Case
Model
OWC (ft)
Well location
Boundary condition
Oil viscosity (cp)
Single-phase model
Flat
/
Flat
/
Center
Closed system
10
Anticline
/
Anticline
/
Center
Closed system
10
Oil-water model
OW-1
No
Anticline
4735
Center
Closed system
10
OW-2
No
Anticline
4735
Center
Closed system
1
OW-3
No
Anticline
4735
Center
Closed system
5
OW-4
No
Anticline
4735
Center
Closed system
25
OW-5
Anticline
4735
Center
Closed system
10
OW-6
High
Anticline
4735
Center
Closed system
10
OW-7
Anticline
4735
Center
Aquifer
10
OW-8
No
Anticline
4735
Center
Aquifer
10
OW-8
High
Anticline
4735
Center
Aquifer
10
OW-9
No
Anticline
4700
Center
Closed system
10
Closed system: the no-flow condition implies zero superficial velocity at the outer boundary and hence the local pressure gradient must also be zero, that is, ; aquifer: the well is situated in the center of a drainage area with a constant pressure, equal to the initial pressure, , maintained along the outer boundary, .
