SSRN Electronic Journal,
Journal Year:
2022,
Volume and Issue:
unknown
Published: Jan. 1, 2022
Understanding
the
occurrence
and
sources
of
methane
in
aquifers
is
an
international
issue,
especially
regions
that
host
oil
gas
reservoirs.
The
largest
artesian
basin
world,
Great
Artesian
Basin,
extends
across
more
than
one
fifth
Australia
providing
a
fresh
water
source
from
various
aquifers.
Precipice
Hutton
sandstone
Surat
Basin
eastern
are
important
resources
for
town
supply,
agriculture,
mines,
feedlots,
private
landholders
Queensland,
Australia.
Overlying
(and
underlying)
formations
extraction.
southern
part
additionally
hosts
field,
potential
CO
2
storage
sites,
therefore
understanding
aquifer
concentrations
important.
ethane
Sandstone
ranged
up
to
2100
6.5
mg/l
respectively
were
96
1
Basin.
Dissolved
measured
by
open
closed
sampling
method,
with
lower
sampling,
wetness
parameter
systematically
slightly
lower.
dissolved
signatures
mainly
consistent
primary
microbial
reduction
generating
situ,
fractionation
factors
indicating
acetate
fermentation
few
cases.
δ
13
C-DIC,
C-CO
,
C-CH
4
have
enrichment
trend
increasing
depth
may
indicate
substrate
depletion
effect.
Moonie
Oil
Field
Evergreen
Formation
samples
plot
thermogenic
region,
enriched
some
biodegradation
occurring.
mixed
early
mature
signature
both
isotope
cross
plots
diagrams,
subset
sampled
C-C
H
6
gas.
A
underlying
reservoir
Bowen
Multi-isotopic
studies
understand
gases
basins
extraction;
or
natural
gas,
compressed
air
hydrogen
storage.
Energies,
Journal Year:
2025,
Volume and Issue:
18(6), P. 1335 - 1335
Published: March 8, 2025
The
successful
commercialisation
of
underground
hydrogen
storage
(UHS)
is
contingent
upon
technological
readiness
and
social
acceptance.
A
lack
acceptance,
inadequate
policies/regulations,
an
unreliable
business
case,
environmental
uncertainty
have
the
potential
to
delay
or
prevent
UHS
commercialisation,
even
in
cases
where
it
ready.
technologies
utilised
for
carbon
dioxide
are
analogous.
differences
lie
types
gases
stored
purpose
their
storage.
It
anticipated
that
challenges
related
public
acceptance
will
be
analogous
both
cases.
An
assessment
was
made
possibility
transferring
experiences
CO2
sequestration
based
on
analysis
relevant
articles
from
indexed
journals.
enabled
identification
elements
can
used
incorporated
into
UHS.
framework
identified
supports
implementation
factors
determining
ranging
conception
demonstration
implementation.
These
include
education,
communication,
stakeholder
involvement,
risk
assessment,
policy
regulation,
trust,
benefits,
research
programmes,
embedding.
Implementing
these
measures
has
increase
facilitate
faster
this
technology.
International Journal of Coal Geology,
Journal Year:
2023,
Volume and Issue:
273, P. 104271 - 104271
Published: May 1, 2023
Shale
-
water
CO2
reactions
may
occur
during
geological
storage,
enhanced
gas
recovery,
oil
or
supercritical
fracturing.
Shale-acid
fracturing
acid
stimulation.
The
mobilisation
of
metals
from
these
processes
can
be
an
environmental
concern
if
production
leaks
is
released
at
surface.
In
addition,
cause
changes
the
pore
scale
and
affect
fluid
flow.
Three
shales
Australian
Cooper
Basin
REM
sequence
were
characterised
for
in
minerals
by
synchrotron
X-ray
fluorescence
microscopy.
Metals
including
Zn,
As,
Ni,
Cr
hosted
sphalerite
associated
with
organic
matter,
Pb
was
pyrite
cement,
Mn
siderite.
separately
reacted
brine
CO2,
CO2-SO2,
dilute
HCl,
N2
100
°C
20
MPa
batch
reactors.
solution
pH
decreased
mineral
releasing
to
general
concentrations
reaction
HCl
>
CO2-SO2
brine.
Of
total
available
Pb,
Li,
Zn
shales,
0
17%,
0.3
23%,
3
13%,
0.4
28%
respectively.
Corrosion
siderite
ankerite
observed
after
reactions,
precipitation
Fe-oxides.
After
dissolved
pyrite,
barite,
Fe-rich
precipitates.
resulted
complete
dissolution
carbonates,
pits
no
observed.
fractions
accessible
mesopores
small
angle
neutron
scattering
(SANS).
Epsilon
Formation
had
greatest
fraction
open
pores
SANS
range
10
150
nm,
followed
Murteree
Roseneath
shale
samples.
a
decrease
accessibility
more
pronounced
consistent
precipitation.
opening
nm
closing
smallest
measured
nm.
mobilised
siderite,
sulphide
mainly,
dependent
on
metal
content
but
also
injected
stream
composition.
based
fluids
result
cleaner
flow
back
water,
than
fluids.
Geochemical
storage
treatment
reactive
that
migration.
Mineral
favourable
self-sealing.
Geological Society London Special Publications,
Journal Year:
2022,
Volume and Issue:
528(1), P. 461 - 489
Published: Aug. 22, 2022
Abstract
Engineered
geological
porous
media
hydrogen
storage
must
be
designed
to
ensure
secure
storage,
and
use
appropriate
monitoring,
measurement
verification
tools.
Here,
we
identify
characterize
60
natural
seeps
as
analogues
for
potential
leakage
from
engineered
reservoirs
consider
implications
monitoring.
We
report
compare
the
environmental
setting;
seepage
mode
(dry
gas/associated
with
water);
co-released
gases;
seep
rates
areal
fluxes;
temporal
variation;
structure;
gas
source;
composition.
Seep
characteristics
are
determined
by
local
hydrological
conditions,
specifically
whether
is
seeping
through
soils
unconsolidated
sediments,
fractured
bedrock
or
into
water.
Hydrogen
typically
co-emitted
other
gases
(CO
2
,
CH
4
N
)
most
common
gas.
The
structural
controls
on
location
similar
between
CO
seeps.
However,
compared
more
readily
dispersed
when
mixing
air
prone
being
consumed
transformed
via
biotic
abiotic
reactions,
so
quantity
of
leaked
can
greatly
attenuated
before
seeping.
Monitoring
approaches
should
therefore
tailored
geology
monitoring
detect
associated
would
appropriate.
International Journal of Coal Geology,
Journal Year:
2023,
Volume and Issue:
277, P. 104352 - 104352
Published: Aug. 29, 2023
CO2
geological
storage
may
be
part
of
the
solution
to
reduce
carbon
emissions
atmosphere.
An
understanding
geochemical
processes
occurring
during
is
needed
risk.
Drill
cores
from
a
low
salinity
reservoir
site
proposed
for
storage,
and
overlying
underlying
formations
were
characterised
minerals
by
QEMSCAN,
total
metals
porosity.
Elements
including
Li,
Ba,
Sr,
K,
Mg,
V,
Zn,
REE,
Fe,
Pb,
P,
S
relatively
elevated
in
Moolayember
Formation
reservoir.
Synchrotron
XFM
showed
main
host
Mn
was
siderite,
with
Rb
K-feldspar,
Zn
Cu
sphalerite
chalcopyrite,
As
pyrite
coal
pores
associated
laminations.
are
reacted
at
conditions
synthetic
formation
water
an
impure
stream
composition
CO2-SOx-NOx-O2
expected
injected
site.
released
dependant
on
mineral
content
quartz
rich
reservoir,
lower
Precipice
Sandstone,
core
reactions
resulted
dissolution
trace
carbonates,
alteration
sulphides
monazite,
variable
dissolved
U.
Dissolved
Co,
Ni,
Ca,
Rb,
U
concentrations
mudstone.
For
carbonate
cemented
upper
Sandstone
or
strong
calcite
ankerite,
corrosion
Fe-rich
chlorite,
monazite
observed
after
reaction.
elements
Mn,
Ba
increased
experiments
reaction
calcite,
siderite
ankerite.
Generally
Cr,
Cu,
Co
etc.
dissolution,
subsequently
decreased
concentration
adsorption
precipitation.
The
fast
mobilisation
Fe
Pb
consistent
release
desorption.
presence
O2
NOX
gas
results
Fe-(oxyhydr)oxide
precipitation
especially
where
has
been
rapidly
mobilised
Fe-chlorite.
This
acts
as
sink
provides
new
sites
sequestering
proportion
metals.
These
applicable
other
potential
leakage
indicators
drinking
aquifers.
findings
also
more
broadly
subsurface
energy
such
compressed
air
renewable
enhanced
recovery,
geothermal,
natural
hydrogen
storage.
