| Summary: | A research on reservoir characterization based on petrophysical analysis and
hydrocarbon reserve calculations have been done on �LE� field, Talang Akar
Formation, North West Java Basin, in the working area of PT. Pertamina EP Asset 3.
Reservoir characterization based on petrophysical analysis is important to be done to
get some of reservoir properties which are used for reserves calculation such as
effective porosity, water saturation, net to gross, and permeability.
In petrophysical analysis, shale volume calculated using Clavier non-linear
method, effective porosity calculated using neutron/density Bateman-Konen method,
water saturation calculated using Indonesia equation, and permeability using Coates
FFI equation. Then, the prospect reservoirs are picked on seismic data to obtain the
reservoir�s volume based on its geometry so the total oil reserves can be calculated
using volumetric method with the petrophysical data and seismic interpretation result
as parameter input.
From the result analysis, there are prospect reservoir which have been
calculated with porosity cut-off value 8%, Vshale cut-off value 40%, and water
saturation cut-off value 70%. Those reservoirs are sand-1 reservoir with reserve value
3.827 MMbbl, sand-2 reservoir with reserve value 33.919 MMbbl, and sand-3
reservoir with reserve value 41.964 MMbbl.
Key word : Petrophysical analysis, Seismic Interpretation, Reserves calculation.
|
|---|