Geoscience Reference
In-Depth Information
Fig. 6.40
Ternary
diagram of influences
on carbonate reservoir
modelling with examples
from this section
Depositional architecture
all scales
Natih example
Fig.6-33
Vaucluse example
Fig. 6-39
Evaporite example
Fig. 6-38
Fractures
Diagenetic
overprint
Fig. 6.41
Sequence-based framework for the Kahmah
and Wasia Group reservoirs in North Oman (After
Droste and Van Steenwinkel
2004
)(Redrawnfrom
Almeida and Frykman
1994
,AAPG
1994, reprinted
by permission of the AAPG whose permission is
required for further use)
#
and fracture patterns all as potential inputs, and
determine the relative importance of each on per-
meability, at the scale of interest (Fig.
6.40
).
Having determined dominant influences on
reservoir quality, these then need to be placed
in a large-scale framework, which for carbonate
environments is usually a sequence-based hierar-
chy, such as the example from Oman (Droste and
Van Steenwinkel
2004
; Fig.
6.41
).
A key topic for attention in carbonate reser-
voir modelling is how to take interpretations of
small-scale pore fabric (Fig.
6.36
) and map these
