Page 129 - Principles of Applied Reservoir Simulation 2E

114 Principles of Applied Reservoir Simulation

Table 12-3 (cont.)
Reservoir Properties Obtainable from Transient Tests
Step-rate tests Formation parting Secondary and
pressure enhanced recovery
Permeability
Skin

Falloff tests Mobility in various Secondary and
banks enhanced recovery
Skin
Reservoir pressure
Fracture length
Location of front
Boundaries

Interference and Communication Primary, secondary,
pulse tests between wells and enhanced recovery
Reservoir type behavior
Porosity
Interwell permeability
Vertical permeability

Layered reservoir Properties of individual Throughout reservoir
tests layers life
Horizontal permeability
Vertical permeability
Skin
Average layer pressure
Outer boundaries

Tables 12-2 and 12-3 illustrate a few of the methods used to gather Mega
Scale information. Advances in technology periodically add to a growing list
of transient tests and well log tools [for example, see Kamal, 1995; Felder,
1994]. In many cases, budgetary constraints will be the controlling factor in
determining the number and type of tests run. The modeling team must work
with whatever information is available. Occasionally, an additional well test or
well log will need to be run, but the expense and scheduling make it difficult
to justify acquiring new well log or well test information once a simulation study
is underwav.