Frontiers in Earth Science,
Journal Year:
2024,
Volume and Issue:
12
Published: March 7, 2024
Underground
gas
storage
(UGS)
is
the
most
economical
and
effective
means
to
guarantee
stable
supply.
During
production
process,
evaporation
of
formation
water
leads
increase
content
in
gas,
salinity
remaining
increases.
This
work
applied
numerical
simulation
analyze
effect
salt
deposition
on
flowing
bottomhole
pressure,
capacity
capacity.
The
results
show
that
minimum
maximum
pressure
UGS
more
likely
be
reached
during
multi-cycle
under
conditions
deposition.
Under
initial
condition,
reservoir
drying
can
improve
At
end
tenth
cycle,
increases
by
1.4%.
It
concluded
study
impact
helpful
for
prevention
control
with
high
salinity.
Petroleum Science,
Journal Year:
2023,
Volume and Issue:
21(2), P. 1018 - 1031
Published: Nov. 5, 2023
The
oil
production
of
the
multi-fractured
horizontal
wells
(MFHWs)
declines
quickly
in
unconventional
reservoirs
due
to
fast
depletion
natural
energy.
Gas
injection
has
been
acknowledged
as
an
effective
method
improve
recovery
factor
from
reservoirs.
Hydrocarbon
gas
huff-n-puff
becomes
preferable
when
CO2
source
is
limited.
However,
impact
complex
fracture
networks
and
well
interference
on
EOR
performance
multiple
MFHWs
still
unclear.
optimal
parameters
are
significant
for
enhancing
recovery.
This
work
aims
optimize
hydrocarbon
with
Firstly,
numerical
model
based
unstructured
grids
developed
characterize
capture
dynamic
features.
Secondly,
PVT
phase
behavior
simulation
was
carried
out
provide
fluid
simulation.
Thirdly,
were
obtained.
Finally,
dominant
factors
under
obtained
by
fuzzy
mathematical
method.
Results
reveal
that
current
pressure
can
achieve
miscible
displacement.
single-factor
analysis
analyze
effect
individual
parameter.
time
networks.
offer
engineers
guidance
considering
Sustainability,
Journal Year:
2023,
Volume and Issue:
15(24), P. 16567 - 16567
Published: Dec. 5, 2023
Estimating
the
effectiveness
of
hydraulic
fracturing
in
context
incrfease
shale
gas
demand
is
great
significance
for
enhancing
production,
which
aims
to
substantially
reduce
fossil
energy
consumption
and
CO2
emissions.
The
Zhaotong
national
demonstration
zone
has
complex
stress
structures
well-developed
fracture
zones,
thus
it
challenging
achieve
targeted
reservoir
segment
transformation.
In
this
paper,
we
construct
optimize
geometry
fractures
at
different
pressures
considering
upper
lower
barriers
simulation
experiments
numerical
modeling.
results
show
that
pore
pressure
exhibits
a
stepped
pattern
around
an
elliptical
near
tip.
During
first
time
injection,
rapidly
increases
76
MPa,
dropping
sharply
afterward,
indicating
initiation
MPa.
propagation,
length
much
greater
than
height
width.
width
larger
middle
on
two
sides,
whereas
gradually
decreases
tip
longitudinal
direction
until
closes
smaller
wellbore
far
end.
revealed
injection
point
reached
maximum
value
9.05
mm,
then
decreased
dropped
6.33
mm
final
time.
broke
through
due
dominance
effect
interlayer
principal
difference
propagation
shape,
causing
break
barriers.
physical
experiment
after
fracturing,
multiple
primary
were
generated
side
surface
specimen.
extended,
inducing
generation
secondary
fractures.
After
specimen
was
0.382–0.802
with
widths
0.802
0.239
representing
decrease
70.19%
This
work
yielded
important
finding,
i.e.,
urgent
need
adaptation
promotes
three-dimensional
development
play.
Fluid dynamics & materials processing,
Journal Year:
2024,
Volume and Issue:
20(6), P. 1365 - 1379
Published: Jan. 1, 2024
Following
large-scale
volume
fracturing
in
shale
oil
reservoirs,
well
shut-in
measures
are
generally
employed.Laboratory
tests
and
field
trials
have
underscored
the
efficacy
of
fluid
imbibition
during
phase
augmenting
productivity.Unlike
conventional
reservoirs
exhibit
characteristics
such
as
low
porosity,
permeability,
rich
content
organic
matter
clay
minerals.Notably,
osmotic
pressure
effects
occurring
between
high-salinity
formation
water
low-salinity
fluids
significant.The
current
understanding
mobilization
patterns
crude
micro-pores
process
remains
nebulous,
mechanisms
underpinning
not
fully
understood.This
study
introduces
a
theoretical
approach,
by
which
salt
ion
migration
control
equation
is
derived
mathematical
model
for
spontaneous
introduced,
able
to
account
both
capillary
pressures.Results
indicate
that
fluids,
facilitate
external
into
pores,
thereby
complementing
forces
displacing
oil.When
considering
pressures,
calculated
depth
increases
12%
compared
case
where
only
present.The
salinity
difference
reservoir
significantly
influences
depth.Calculations
shutin
reveal
matrix
fractures
reaches
dynamic
equilibrium
after
28
days
shut-in.During
production
phase,
maximum
seepage
distance
target
block
approximately
6.02
m.
Frontiers in Earth Science,
Journal Year:
2024,
Volume and Issue:
12
Published: March 7, 2024
Underground
gas
storage
(UGS)
is
the
most
economical
and
effective
means
to
guarantee
stable
supply.
During
production
process,
evaporation
of
formation
water
leads
increase
content
in
gas,
salinity
remaining
increases.
This
work
applied
numerical
simulation
analyze
effect
salt
deposition
on
flowing
bottomhole
pressure,
capacity
capacity.
The
results
show
that
minimum
maximum
pressure
UGS
more
likely
be
reached
during
multi-cycle
under
conditions
deposition.
Under
initial
condition,
reservoir
drying
can
improve
At
end
tenth
cycle,
increases
by
1.4%.
It
concluded
study
impact
helpful
for
prevention
control
with
high
salinity.
