Page 173 - Open-Hole Log Analysis and Formation Evaluation

4030
pay
The
maps
gas/oil
seismic
structure
isopachs.
structure,
sufficient
above
gross
or

the
also
showing
wells,
Figure
rock
cannot
together
mapping,
be
how
8.7
have
gas/water)
VOLUMES
oil/water
with
assumed
volume
many
been
many
an
shows
deduced
a
net
AOS
contact
contact.
the
drilled,
feet
cross
enclosed
isopach
froma
it
well
exist.
of
is
map
uncertainties
If the
single
pay
stratigraphic
within
section
Such
a
bed
log.
deviation
usually
is
above
remain.
maps
contouring
through
Even
the
an
are
the
possible
with
to
the
net
the
However,
oil/water
known
feet
aid
same

oil-bearing
as
of
(or
prepare
after
is
hydrocarbon-bearing
at
of

Vp
i RESERVOIR Vip negative numbers. appear as and TVT will answers for TST If this occurs, the the top side. side and exit from the and the bottom the bed from will, in fact, enter that the well possible it highly dipping, bed. crosses the change:as the well do not and azimuth = that is bed. It the the well leaves as it is when enters the bed point
Vg
and
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The
=
=
=
the
i ah A RESERVE ESTIMATION
by
area
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7
&
n
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volume

total
Well Services.
total
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volume
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by
T
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map
8.8.
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volume
volume
of the
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a
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of a
of a
trapezoid
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‘
planimeter
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each
The volume
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contour
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numerical
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calculated
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between
may then be
as
ty
enclosed within
function
an
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contours
integration.
therefore
of
dy,
made
is
each
-

: Area ™ T
>
given
depth
contours
by
is
showing
integration
as
contour