Journal of Energy Storage,
Год журнала:
2023,
Номер
62, С. 106921 - 106921
Опубликована: Фев. 24, 2023
The
geological
sequestration
of
carbon
dioxide,
including
mineralization
in
basaltic
formations,
has
been
identified
as
a
promising
method
attaining
low-carbon
economy.
However,
successful
CO2
storage
depends
on
both
the
wettability
rocks
and
basalt
rock-fluid
interfacial
interactions.
contact
angles
brine/CO2
systems
for
Western
Australian
(WA)
Iceland
basalts
have
recently
reported
literature.
angle
datasets
evaluating
Saudi
Arabian
(SA)
not
previously
reported.
Moreover,
there
is
limited
information
impact
organic
acids
basalt/CO2/brine
system.
In
present
study,
supercritical
CO2/brine
SA
are
measured
at
temperatures
298
323
K,
various
pressures
0.1–20
MPa
absence
presence
acid
(10−2
mol/L
stearic
acid).
Various
analytical
methods
used
to
characterize
surface,
wetting
behavior
compared
with
that
WA
basalts.
quantity
can
be
safely
trapped
underneath
(in
terms
column
height)
then
computed
from
experimental
data.
At
highest
tested
temperature
pressure
(20
K),
pure
found
remain
strongly
water-wet,
advancing
(θa)
receding
(θr)
46.7°
43.2°,
respectively,
whereas
becomes
moderately
water-wet
(θa
=
85.1°
θr=81.8°),
CO2-wet
103.6°
θr=96.1°).
organic-aged
attains
state
106.8°
θr
95.2°).
addition,
height
higher
than
Further,
decreases
835
m
5
−957
20
MPa.
These
results
suggest
could
freer
plumb
lateral
movement
into
acid,
thus
resulting
lower
residual
mineral
trapping
capacities,
fewer
eventual
leakages
CO2,
across
formation.
International Journal of Hydrogen Energy,
Год журнала:
2024,
Номер
59, С. 1352 - 1366
Опубликована: Фев. 15, 2024
Underground
hydrogen
storage
(UHS)
is
gaining
interest
as
a
secure,
long-term
solution
for
storing
in
porous
geological
formations.
In
UHS,
cushion
gas
like
CO2
crucial
to
maintain
the
reservoir
pressure
and
optimize
recovery.
The
concept
of
wettability
plays
fundamental
role
determining
system's
multi-phase
displacement
characteristics
media.
However,
there
gap
existing
literature
regarding
sandstone
rocks
under
geo-storage
conditions
when
H2
are
injected
bulk
gases,
respectively.
To
address
this
gap,
we
conducted
study
investigating
hysteresis
phenomenon
by
measuring
advancing
receding
contact
angles
different
mixtures
H2/CO2
with
brine
on
mineral
pressures
temperatures,
using
tilted
plate
method.
results
show
that
angle
increases
pressure,
leading
system
become
less
water-wet.
Conversely,
an
increase
temperature
makes
more
Moreover,
measured
remains
relatively
constant
despite
changes
concentration.
Further
analyses
utilizing
atomic
force
microscope
(AFM)
energy
dispersive
X-ray
spectroscopy
(EDS)
indicated
chemical
physical
structure
rock
does
not
change
after
exposure
CO2,
consistent
observed
lack
varying
fraction.
conclusion,
water-wet
state
identified
decreases
residual
trapping
H2,
facilitating
higher
recovery
but
posing
potential
risk
leakage.
Hence,
fraction
favorable
reducing
decreasing
IFT
and,
subsequently,
column.
This
improves
our
understanding
mechanisms,
aiding
accurate
simulations
underground
systems.
International Journal of Hydrogen Energy,
Год журнала:
2024,
Номер
58, С. 485 - 494
Опубликована: Янв. 25, 2024
Underground
hydrogen
storage
(UHS)
offers
a
promising
approach
for
the
of
significant
volumes
gas
(H2)
within
deep
geological
formations,
which
can
later
be
utilized
energy
generation
when
necessary.
Interfacial
tension
(IFT)
between
H2
and
formation
brine
plays
vital
role
in
influencing
distribution
at
pore
scale
and,
ultimately,
capacity.
In
this
research,
we
developed
four
intelligent
models:
Decision
Trees
(DT),
Random
Forests
(RF),
Support
Vector
Machines
(SVM),
Multi-Layer
Perceptron
(MLP).
These
models
were
designed
to
predict
IFT
utilizing
pressure,
temperature,
molality.
Additionally,
fine-tuned
three
explicit
correlations
previously
our
research.
To
assess
influence
each
parameter
on
IFT,
conducted
comprehensive
analysis
raw
data
exclude
doubtful
samples.
This
was
followed
by
rigorous
model
development,
including
hyperparameter
tuning,
finally,
an
examination
using
testing
data.
The
results
clearly
demonstrate
superiority
RF
model,
achieving
high
accuracy
reliability
with
coefficients
determination
(R2),
root
mean
square
error
(RMSE),
average
absolute
relative
deviation
(AARD)
values
0.96,
1.50,
1.84
%,
respectively.
exemplary
performance
attributed
its
inherent
characteristics.
ensemble
excels
capturing
complex
relationships,
thereby
enhancing
predictive
solidifying
over
other
study.
Furthermore,
feature
importance
revealed
that
temperature
has
most
influence,
molality
pressure.
Moreover,
assessed
these
through
external
not
used
initial
training
stages.
Our
study
highlights
exceptional
power
emphasizing
practical
selecting
enhanced
reliability.
proposed
method
shows
potential
industrial
applications,
especially
optimizing
underground
storage.
Energy & Fuels,
Год журнала:
2024,
Номер
38(3), С. 1713 - 1728
Опубликована: Янв. 23, 2024
Underground
hydrogen
storage
(UHS)
is
a
promising
solution
to
meet
the
increase
in
energy
supply
and
demand
while
supporting
transition
net-zero
carbon.
The
successful
implementation
of
UHS
requires
careful
assessment
several
scientific
aspects,
among
them
evaluating
cement
stability
wellbore
integrity
ensure
safe
production
hydrogen.
Few
studies
have
evaluated
geochemical
reactivity
hydrogen;
however,
more
are
needed
explore
role
adsorption
diffusivity
behavior
with
address
associated
issues.
This
minireview
presents
state-of-the-art
advancement
impact
on
from
various
including
hydrogen/cement
interactions,
diffusivity,
current
methodologies,
experimental
setups,
additives
cushion
gases.
provides
general
comparison
between
other
gas
applications
mainly
aims
bridge
knowledge
gap
by
providing
insights
for
practical
implementations,
challenges,
future
directions
relevant
integrity.
Although
most
reviewed
reported
low
injection
stability,
further
as
technical
non-technical
factors
mechanisms
involved.
Systematic
should
be
performed
future,
which
will
assist
overcoming
existing
challenges
reducing
uncertainty
during
UHS.
Energies,
Год журнала:
2025,
Номер
18(3), С. 748 - 748
Опубликована: Фев. 6, 2025
As
the
global
economy
moves
toward
net-zero
carbon
emissions,
large-scale
energy
storage
becomes
essential
to
tackle
seasonal
nature
of
renewable
sources.
Underground
hydrogen
(UHS)
offers
a
feasible
solution
by
allowing
surplus
be
transformed
into
and
stored
in
deep
geological
formations
such
as
aquifers,
salt
caverns,
or
depleted
reservoirs,
making
it
available
for
use
on
demand.
This
study
thoroughly
evaluates
UHS
concepts,
procedures,
challenges.
paper
analyzes
most
recent
breakthroughs
technology
identifies
special
conditions
needed
its
successful
application,
including
site
selection
guidelines,
technical
factors,
significance
characteristics.
The
integrity
wells
caprock,
which
is
important
safe
efficient
storage,
can
affected
operating
dynamics
cycle,
notably
fluctuations
pressure
stress
within
formations.
To
evaluate
potential
broader
adoption,
we
also
examined
economic
elements
cost-effectiveness
practicality
storage.
We
reviewed
current
efforts
identified
key
knowledge
gaps,
primarily
areas
hydrogen–rock
interactions,
geochemistry,
gas
migration
control,
microbial
activities,
geomechanical
stability.
Resolving
these
technological
challenges,
regulatory
frameworks,
environmental
sustainability
are
UHS’s
long-term
extensive
integration
industry.
article
provides
roadmap
research
development,
emphasizing
need
further
fully
realize
technology’s
promise
pillar
economy.
