Influence of pore heterogeneity of shale with different lithofacies on CO2 storage: Experiments and molecular dynamics simulation
Engineering Geology,
Год журнала:
2025,
Номер
unknown, С. 108107 - 108107
Опубликована: Май 1, 2025
Язык: Английский
Comprehensive Characterization and Impact Analysis of Interlayers on CO2 Flooding in Low-Permeability Sandstone Reservoirs
Energies,
Год журнала:
2025,
Номер
18(3), С. 593 - 593
Опубликована: Янв. 27, 2025
In
low-permeability
sandstone
reservoirs
(LPSR),
impermeable
interlayers
significantly
challenge
carbon
capture,
utilization,
and
storage
(CCUS)
enhance
oil
recovery
(CO2-EOR)
processes
by
creating
complex,
discontinuous
flow
units.
This
study
aims
to
address
these
challenges
through
a
comprehensive
multi-faceted
approach
integrating
geological
microscopic
analyses,
including
core
analysis,
reservoir
petrography,
field
emission-scanning
electron
microscopy
(FE-SEM),
energy
dispersive
spectroscopy
(EDS),
well-logging
response
utilizing
three-dimensional
(3D)
modeling.
The
current
investigation
systematically
characterizes
interlayer
types,
petrophysical
properties,
thickness,
connectivity,
their
spatial
distribution
in
the
unit.
Numerical
simulations
were
conducted
assess
sealing
efficiency
impact
of
various
materials
on
CO2
flooding
over
10-year
period.
Results
indicate
presence
argillaceous
interlayers,
with
optimal
occurring
barriers
≥
4
m
1.5
thick.
leakage
occurs
preferential
pathways
that
emerge
side-to-middle
bottom-to-top
direction
interbeds,
multidirectional
showing
greater
at
bottom
compared
upper
side
within
barriers.
Increased
thickness
constraints
breakthrough
but
reduces
vertical
area
production
ratio
homogeneous
reservoirs.
Augmented
interbed
mitigate
time
while
constraining
gravity
override
dispersion
effects,
enhancing
horizontal
displacement.
These
novel
findings
provide
crucial
insights
for
optimizing
CCUS-EOR
strategies
LPSR,
offering
robust
theoretical
foundation
future
applications
serving
as
key
reference
utilization
challenging
settings
LPSR
worldwide.
Язык: Английский
Insights on the fracture behavior of mudstone subjected to water and liquid CO2 fracturing
Geoenergy Science and Engineering,
Год журнала:
2025,
Номер
unknown, С. 213721 - 213721
Опубликована: Янв. 1, 2025
Язык: Английский
Risk Assessment of Fault Activation Using an Equivalent Continuum Method During Geological CO2 Storage in a Fractured Reservoir
SPE Reservoir Simulation Conference,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 18, 2025
Abstract
The
stability
of
faults
must
be
evaluated
carefully
for
reliable
and
successful
geological
CO2
storage
(GCS)
projects,
especially
in
reservoirs
with
abundant
fractures
faults.
induced
slip
reactivation
fractured
can
create
significant
leakage
pathways.
Therefore,
investigating
the
geomechanical
response
on
through
hydromechanical
coupled
simulations
is
crucial
but
challenging.
It
requires
constructing
fine
computational
grids
that
conform
to
faults,
which
arduous
3D
field-scale
settings.
This
study
aims
develop
a
numerical
method
does
not
require
finely
gridding
near
equivalent
continuum
(ECM)
adopted
efficiently
model
interactions
assess
risk
fault
activation
during
GCS
reservoirs.
In
this
work,
we
described
simulation
framework
faulted
natural
formations.
constitutive
relations
are
rigorously
derived
from
stressstrain
analysis,
permeability
calculated
based
seepage
resistance
method.
A
hybrid
discretization
used
solve
geomechanical-flow
system
flow
discretized
using
finite
volume
method,
by
element
We
established
reservoir
crossed
tectonic
investigated
spatial
convergence
compared
its
accuracy
an
extremely
mesh.
analyzed
influence
damage
zone
properties
both
mesh
size
requirements
tendency
ECM.
finally
simulated
case
several
GEOS
simulator
investigate
Mohr-Coulomb
criterion.
Numerical
have
demonstrated
practical
applicability
proposed
approach
modeling
geomechanics
GCS.
mechanical
zone,
particularly
Young's
modulus
Poisson's
ratio,
only
optimal
selection
ECM
implementation
also
significantly
affect
assessment.
According
allocation
relationship
between
regional
seal
vertical
extension
roughly
divided
into
embedded,
lower-broken,
broken-through
modes.
Among
these,
mode
presents
highest
special
attention.
work
introduces
simulate
field
scale,
eliminating
need
fractures.
Furthermore,
it
provides
perspective
analysis
case.
Язык: Английский
Integrated modeling of thermal decarbonation and three-dimensional poroelastic fluid behavior: Assessment of stored CO2 leakage along carbonate fault
Engineering Geology,
Год журнала:
2025,
Номер
unknown, С. 108065 - 108065
Опубликована: Апрель 1, 2025
Язык: Английский
Experimental and thermodynamic analysis of the carbonation of geopolymer under geologic CO2 sequestration conditions
Physics of Fluids,
Год журнала:
2025,
Номер
37(4)
Опубликована: Апрель 1, 2025
The
integrity
of
wellbore
sealing
is
vital
for
carbon
dioxide
sequestration.
carbonation
metakaolin-based
geopolymer
under
conditions
50
°C
and
10
MPa
was
experimentally
studied.
Furthermore,
thermodynamic
simulation
utilized
to
analyze
the
geopolymer.
experimental
results
show
that
unreacted
raw
materials
granular
precursors
remain
after
hydration
After
28
days
corrosion,
a
substantial
quantity
sodium
aluminosilicate
hydrate
gel
produced;
however,
macro-cracks
develop
on
surface
sample,
resulting
in
decrease
strength.
Thermodynamic
revealed
dawsonite,
Clinoptilolite-(K),
Heulandite-(Ca)
excellent
resistance
corrosion.
Moreover,
an
increase
temperature
enhances
mineral
phases
carbonation.
However,
higher
concentration
aqueous
solution
accelerates
rate
In
presence
ions
sulfate
solution,
Chabazite-(Na)
Stilbite-(K)
consume
more
during
leading
increased
dawsonite
formation.
Low-calcium
are
suitable
developing
corrosion-resistant
cementing
slurry
system.
Язык: Английский
Caprock sealing for geologic CO2 storage: Research advances, challenges and prospects
Journal of Rock Mechanics and Geotechnical Engineering,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 1, 2025
Язык: Английский
Hydro-mechanical interactions in CO2 storage: Critical parameters influencing coal mine at Shenhua's CCS site
Engineering Geology,
Год журнала:
2025,
Номер
unknown, С. 108087 - 108087
Опубликована: Апрель 1, 2025
Язык: Английский
Assessment of MgO and captured CO2 in deep mixing applications: electrical properties and environmental impacts
Case Studies in Construction Materials,
Год журнала:
2025,
Номер
unknown, С. e04707 - e04707
Опубликована: Апрель 1, 2025
Язык: Английский
Analysis of Caprock Mechanical Stability for CO2 Geological Storage Based on the Fuzzy Analytic Hierarchy Process
Journal of Progress in Civil Engineering,
Год журнала:
2024,
Номер
6(12), С. 25 - 29
Опубликована: Дек. 26, 2024
Carbon
dioxide
geological
sequestration
(CCS)
technology
is
a
key
measure
for
addressing
climate
change,
and
its
safety
heavily
depends
on
the
mechanical
stability
of
caprock
in
storage
formation.
This
paper
develops
comprehensive
evaluation
system
based
Fuzzy
Analytic
Hierarchy
Process
(FAHP)
to
assess
after
CO2
injection
into
saline
aquifers.
Compared
other
quantitative
methods,
FAHP
more
effective
at
handling
fuzziness
uncertainty
inherent
process.
By
utilizing
fuzzy
judgment
matrix,
it
accurately
reflects
relative
importance
various
factors,
thus
enhancing
scientific
rigor
reliability
results.
To
validate
effectiveness
this
system,
an
engineering
case
study
was
conducted
using
data
from
Jilin
Oilfield.
The
results
indicate
that
Fourth
Member
Sifangtai
Formation
Oilfield,
as
evaluated
by
model,
exhibits
high
across
multiple
indicators,
possesses
strong
capacity
terms
thickness,
compressive
strength,
shear
low
permeability.
result
classified
"Good,
"
meeting
requirements
sequestration.
demonstrates
advantages
assessing
caprocks
complex
environments
provides
tool
technical
support
projects
Oilfield
similar
regions.
In
future,
integrating
actual
monitoring
further
optimize
will
provide
accurate
decision-making
long-term
prediction
risk
management
Язык: Английский