Journal of Energy Storage,
Journal Year:
2023,
Volume and Issue:
62, P. 106865 - 106865
Published: Feb. 15, 2023
The
substitution
of
fossil
fuel
with
clean
hydrogen
(H2)
has
been
identified
as
a
promising
route
to
achieve
net
zero
carbon
emissions
by
this
century.
However,
enough
H2
must
be
stored
underground
at
an
industrial
scale
objective
due
the
low
volumetric
energy
density
H2.
In
storage,
cushion
gases,
such
methane
(CH4),
are
required
maintain
safe
operational
formation
pressure
during
withdrawal
or
injection
wetting
characteristics
geological
formations
in
presence
H2,
gas,
and
resultant
gas
mixture
mixing
zone
between
them
essential
for
determining
storage
capacities.
Therefore,
present
work
measured
contact
angles
four
Jordanian
oil
shale
rocks
CH4,
H2-CH4/brine
systems
their
interfacial
tension
(IFT)
(geo-storage)
conditions
(pressures
0.1
1600
psi
temperature
323
K)
evaluate
residual
structural
trapping
potential
efficiency
CH4
gas.
Various
analytical
methods
were
employed
comprehend
bulk
mineralogy,
elemental
composition,
topographic
characterization,
functional
groups,
surface
properties
rocks.
total
organic
(TOC)
effect
on
wettability
was
demonstrated
compared
previous
studies.
samples
high
ultrahigh
TOC
13
%
18
exhibited
brine
advancing/receding
angles.
rock
became
hydrophobic
highest
experimental
(1600
K).
rock/CH4/brine
higher
than
rock/H2/brine
angles,
remained
those
pure
gases.
Moreover,
IFT
displayed
inverse
trend,
where
H2/brine
CH4/brine
IFT.
results
suggest
that
geo-storage
tested
organic-rich
source
could
favorable
when
is
used
consistent
studies
using
synthetically
acid-aged
samples.
For
first
time,
from
more
realistic
situation
influence
missing
material
H2/brine/rock
geo-storage.
Fuel,
Journal Year:
2022,
Volume and Issue:
315, P. 122947 - 122947
Published: Jan. 10, 2022
The
relatively
low
density
and
viscosity
of
carbon
dioxide
(CO2)
in
supercritical
state
create
several
drawbacks,
including
gravity
override,
viscous
fingering,
water
production/treatment
problems,
poor
proppant
transport
for
the
petroleum
industry.
introduction
CO2
thickeners
offers
a
promising
additive
technology
with
sufficient
solubility
enhancement
attributes.
current
article
reviews
technical
advances,
challenges,
applicability
thickened
CO2,
particularly
hydrocarbon
recovery.
Different
types
thickeners,
polymers,
tailor-made
surfactants,
small
associating
compounds,
were
investigated
terms
their
nature,
physicochemical
traits,
cost,
applications.
molecular
weight
concentration,
shear
rate,
co-solvent
composition,
temperature,
pressure
play
significant
role
intermolecular
forces
miscibility
effect
presence
dense
CO2.
Binary
co-polymers
(non-fluorinated
non-siloxane
materials)
molecule
(associating)
compounds
are
options
thickening
owing
to
enhanced
performance,
cost-effectiveness,
ecological
footprint.
This
study
provides
comprehensive
review
existing
technologies,
outline
gaps,
potential,
required
area
improvement.
Earth-Science Reviews,
Journal Year:
2023,
Volume and Issue:
247, P. 104625 - 104625
Published: Nov. 22, 2023
The
transition
from
fossil
fuels
to
renewable
energy
sources,
particularly
hydrogen,
has
emerged
as
a
central
strategy
for
decarbonization
and
the
pursuit
of
net-zero
carbon
emissions.
Meeting
demand
large-scale
hydrogen
storage,
crucial
component
supply
chain,
led
exploration
underground
storage
an
economically
viable
solution
global
needs.
In
contrast
other
subsurface
options
such
salt
caverns
aquifers,
which
are
geographically
limited,
depleted
gas
reservoirs
have
garnered
increasing
attention
due
their
broader
distribution
higher
capacity.
However,
safe
cycling
in
require
preservation
high
stability
integrity
caprock,
reservoir,
wellbore.
Nevertheless,
there
exists
significant
gap
current
research
concerning
within
reservoirs,
systematic
approach
is
lacking.
This
paper
aims
address
this
by
reviewing
primary
challenges
associated
with
integrity,
including
geochemical
reactions,
microbial
activities,
faults
fractures,
perspectives
on
cycling.
study
comprehensively
reviews
processes
impacts,
abiotic
biotic
mineral
dissolution/precipitation,
reactivation
propagation
fractures
caprock
host-rock,
wellbore
instability
cement
degradation
casing
corrosion,
stress
changes
during
To
provide
practical
solution,
technical
screening
tool
been
developed,
considering
controlling
variables,
risks,
consequences
affecting
integrity.
Finally,
highlights
knowledge
gaps
suggests
feasible
methods
pathways
mitigate
these
facilitating
development
reservoirs.
Journal of Energy Storage,
Journal Year:
2023,
Volume and Issue:
62, P. 106865 - 106865
Published: Feb. 15, 2023
The
substitution
of
fossil
fuel
with
clean
hydrogen
(H2)
has
been
identified
as
a
promising
route
to
achieve
net
zero
carbon
emissions
by
this
century.
However,
enough
H2
must
be
stored
underground
at
an
industrial
scale
objective
due
the
low
volumetric
energy
density
H2.
In
storage,
cushion
gases,
such
methane
(CH4),
are
required
maintain
safe
operational
formation
pressure
during
withdrawal
or
injection
wetting
characteristics
geological
formations
in
presence
H2,
gas,
and
resultant
gas
mixture
mixing
zone
between
them
essential
for
determining
storage
capacities.
Therefore,
present
work
measured
contact
angles
four
Jordanian
oil
shale
rocks
CH4,
H2-CH4/brine
systems
their
interfacial
tension
(IFT)
(geo-storage)
conditions
(pressures
0.1
1600
psi
temperature
323
K)
evaluate
residual
structural
trapping
potential
efficiency
CH4
gas.
Various
analytical
methods
were
employed
comprehend
bulk
mineralogy,
elemental
composition,
topographic
characterization,
functional
groups,
surface
properties
rocks.
total
organic
(TOC)
effect
on
wettability
was
demonstrated
compared
previous
studies.
samples
high
ultrahigh
TOC
13
%
18
exhibited
brine
advancing/receding
angles.
rock
became
hydrophobic
highest
experimental
(1600
K).
rock/CH4/brine
higher
than
rock/H2/brine
angles,
remained
those
pure
gases.
Moreover,
IFT
displayed
inverse
trend,
where
H2/brine
CH4/brine
IFT.
results
suggest
that
geo-storage
tested
organic-rich
source
could
favorable
when
is
used
consistent
studies
using
synthetically
acid-aged
samples.
For
first
time,
from
more
realistic
situation
influence
missing
material
H2/brine/rock
geo-storage.
