Geoscience Reference
In-Depth Information
Fig. 6.9
A modern
braided fluvial system, with
inset showing a compound
barform (Photo A.
Martinius/Statoil
#
Statoil
ASA, reproduced with
permission)
define the appropriate
modelling elements
. Typi-
cal modelling elements for a fluvial system are:
one or two channel elements, e.g. coarse-
grained channel lag deposits and the main
(typically finer) active channel fill,
discrete
6.2.3 Connectivity and Percolation
Theory
Understanding sandstone connectivity in fluvial
reservoirs is nearly always a dominant issue,
and is best understood in terms of
percolation
theory
, which describes the statistics of connec-
tivity. In the context of sandstone connectivity,
the essential problem is whether we can say a
sandstone observed in one well will connect
with a sandstone observed in another well
(Fig.
6.12
).
barforms within
the
channel
complexes,
overbank deposits giving thin lateral commu-
nication paths within the non-reservoir back-
ground, and
mudstone-dominated background facies (the
floodplain).
