Physics of Fluids,
Journal Year:
2024,
Volume and Issue:
36(6)
Published: June 1, 2024
CO2
injection
is
a
promising
technology
for
enhancing
gas
recovery
(CO2-EGR)
that
concomitantly
reduces
carbon
emissions
and
aids
the
energy
transition,
although
it
has
not
yet
been
applied
commercially
at
field
scale.
We
develop
an
innovative
workflow
using
raw
data
to
provide
effective
approach
in
evaluating
CH4
during
CO2-EGR.
A
well-calibrated
three-dimensional
geological
model
generated
validated
actual
data—achieving
robust
alignment
between
history
simulation.
visualize
spread
of
plume
quantitatively
evaluate
dynamic
productivity
single
well.
use
three
deep
learning
algorithms
predict
time
histories
rate
feedback
on
production
wells
across
various
systems.
The
results
indicate
can
enhance
water-bearing
reservoirs—CH4
increases
with
escalating.
Specifically,
increased
diminishes
breakthrough
while
concurrently
expanding
swept
area.
Deep
exhibit
superior
predictive
performance,
gated
recurrent
unit
being
most
reliable
fastest
among
algorithms,
particularly
when
accommodating
series,
as
evidenced
by
its
smallest
values
evaluation
metrics.
This
study
provides
efficient
method
predicting
before
after
injection,
which
exhibits
speedup
3–4
orders
magnitudes
higher
than
traditional
numerical
Such
models
show
promise
advancing
practical
application
CO2-EGR
reservoir
development.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: March 7, 2024
Abstract
Geoscientists
now
identify
coal
layers
using
conventional
well
logs.
Coal
layer
identification
is
the
main
technical
difficulty
in
coalbed
methane
exploration
and
development.
This
research
uses
advanced
quantile–quantile
plot,
self-organizing
maps
(SOM),
k-means
clustering,
t-distributed
stochastic
neighbor
embedding
(t-SNE)
qualitative
log
curve
assessment
through
three
wells
(X4,
X5,
X6)
complex
geological
formation
to
distinguish
from
tight
sand
shale.
Also,
we
reservoir
rock
typing
(RRT),
gas-bearing
non-gas
bearing
potential
zones.
Results
showed
gamma-ray
resistivity
logs
are
not
reliable
tools
for
identification.
Further,
highlighted
high
acoustic
(AC)
neutron
porosity
(CNL),
low
density
(DEN),
photoelectric,
values
as
compared
While,
5–10%
values.
The
SOM
clustering
provided
evidence
of
good-quality
RRT
facies,
whereas
other
clusters
related
shale
poor-quality
RRT.
A
t-SNE
algorithm
accurately
distinguished
was
used
make
CNL
DEN
plot
that
presence
low-rank
bituminous
rank
study
area.
presented
strategy
shall
provide
help
comprehend
coal-tight
lithofacies
units
future
mining.