Gels,
Journal Year:
2024,
Volume and Issue:
10(11), P. 721 - 721
Published: Nov. 7, 2024
High-temperature
steam
injection
is
a
primary
method
for
viscosity
reduction
and
recovery
in
heavy
oil
reservoirs.
However,
due
to
the
high
mobility
of
steam,
channeling
often
occurs
within
reservoir,
leading
reduced
thermal
efficiency
challenges
enhancing
production.
Foam
fluids,
with
their
dual
advantages
selective
plugging
efficient
displacement,
are
widely
used
steam-injection
recovery.
Nonetheless,
conventional
foams
tend
destabilize
under
high-temperature
conditions,
resulting
poor
stability
suboptimal
performance,
which
hampers
development
resources.
To
address
these
technical
challenges,
this
study
introduces
foam
system
reinforced
Janus
nano-graphite,
stabilizer
characterized
by
its
small
particle
size
resistance.
The
foaming
agents
sodium
α-olefin
sulfonate
(AOS),
an
anionic
surfactant,
octadecyl
hydroxylpropyl
sulfobetaine
(OHSB),
zwitterionic
surfactant.
Under
conditions
250
°C
5
MPa,
achieved
half-life
47.8
min,
3.4
times
longer
than
foams.
nano-graphite
forms
multidimensional
network
structure
liquid
phase,
increasing
internal
friction
shear
1.2
1.8
that
Furthermore,
gel
demonstrated
effective
steam-channeling
control
heterogeneous
reservoirs,
particularly
reservoirs
permeability
differentials
ranging
from
3
9.
These
findings
suggest
holds
significant
potential
mitigation
Catalysts,
Journal Year:
2024,
Volume and Issue:
14(12), P. 841 - 841
Published: Nov. 21, 2024
In
petroleum
refining,
catalysts
are
used
to
efficiently
convert
crude
oil
into
valuable
products
such
as
fuels
and
petrochemicals.
These
employed
in
a
range
of
processes,
including
catalytic
cracking,
hydrotreating,
reforming
meet
stringent
fuel
quality
standards.
This
review
explores
recent
advancements
refining
catalysts,
focusing
on
novel
materials,
enhanced
synthesis
methods,
their
industrial
applications.
The
development
nano-,
hierarchically
structured,
supported
metal
has
led
significant
improvements
catalyst
selectivity,
yield,
longevity.
innovations
particularly
important
for
processes
hydrocracking,
fluid
reforming,
where
improve
conversion
rates,
product
quality,
environmental
sustainability.
Advances
techniques
sol-gel
microwave-assisted
synthesis,
atomic
layer
deposition
have
further
optimized
performance.
Environmental
considerations
also
driven
the
that
reduce
harmful
emissions,
sulfur
oxides
nitrogen
while
promoting
green
catalysis
through
use
bio-based
materials
recyclable
catalysts.
Despite
these
advancements,
challenges
remain,
scaling
integrating
them
with
existing
technologies.
Future
research
should
focus
exploration
new
metal-organic
frameworks
multi-functional
which
promise
revolutionize
industry.
thus
demonstrates
transformative
potential
advanced
enhancing
efficiency
sustainability
refining.
Journal of Marine Science and Engineering,
Journal Year:
2025,
Volume and Issue:
13(3), P. 597 - 597
Published: March 18, 2025
China’s
offshore
heavy
oil
resources
are
abundant
but
underutilized.
Circulating
steam
stimulation
enhances
production
while
increasing
casing
failure
risks
in
thermal
recovery
wells.
Accurately
assessing
performance
after
repeated
cycles
is
crucial
for
ensuring
wellbore
integrity.
This
paper
presents
tensile
and
creep
experiments
on
TP110H
under
cyclic
temperatures.
The
temperature
distribution
within
the
“casing-cement
sheath-stratum”
system
derived
using
heat
transfer
theory.
Stress
displacement
equations
established
based
thick-walled
cylinder
theory
thermo-elasticity.
Thermal
coupling
analysis
assesses
stress
straight,
inclined,
sidetrack
well
sections.
Key
factors,
including
injection
pressure,
situ
stress,
cement
modulus,
prestress,
analyzed
their
effects
cumulative
strain
below
packer.
Strain-based
methods
evaluate
safety.
Results
show
that
cycling
at
350
°C,
16
cycles,
casing’s
elastic
yield
strength,
strength
decrease
by
15.3%,
13.1%,
10.1%,
respectively,
rate
increases
16.0%.
Above
packer,
remains
safe,
lower
section
may
be
risk.
Using
low-elasticity
cement,
higher
prestressing
can
help
improve
performance.
study
provides
guidance
enhancing
safety
optimizing
parameters.
ACS Omega,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 7, 2025
The
high
content
of
heavy
components
and
poor
fluidity
oil
present
a
substantial
challenge
to
its
efficient
transportation
in
the
petroleum
industry.
Diluting
with
light
is
one
approaches
utilized
improve
fluidity.
However,
existing
research
has
given
relatively
little
attention
deposition
behavior
blended
crude
oil.
In
this
study,
loop
experiment
device
was
systematically
employed
investigate
effects
components,
blending
ratio,
properties
on
diluted
wax,
resin,
asphaltene,
carbon
contents
deposits
were
analyzed
using
four
analysis
high-temperature
gas
chromatography.
results
indicated
that
higher
asphaltene
led
an
increase
wax
appearance
temperature
deposit
thickness
Additionally,
reduction
ratio
associated
thickness.
When
analyzing
upward
trend
observed
average
number.
A
discussion
interaction
mechanism
carried
out,
suggesting
molecular
diffusion
aging
effect
accountable
for
variations
both
composition
system.
This
contributes
deeper
understanding
Energies,
Journal Year:
2024,
Volume and Issue:
17(18), P. 4715 - 4715
Published: Sept. 22, 2024
Heavy
oil
resources
are
abundant
globally,
holding
immense
development
potential.
However,
conventional
thermal
recovery
methods
such
as
steam
injection
plagued
by
high
heat
loss,
substantial
carbon
emissions,
and
significant
water
consumption,
making
them
incompatible
with
reduction
goals
the
sustainable
socioeconomic
demands.
A
new
method
of
high-frequency
electromagnetic
in
situ
heating,
which
targets
polar
molecules,
can
convert
energy
into
so
to
achieve
rapid
volumetric
heating
reservoir.
This
has
potential
overcome
drawbacks
traditional
techniques.
Nevertheless,
it
faces
limited
range
inadequate
supply
during
later
production
stages,
necessitates
auxiliary
enhancement
measures.
Various
measures
have
been
reported,
including
nitrogen
injection,
hydrocarbon
solvent
or
use
nano-metal
oxide
injections.
These
hindered
issues
pure
being
easy
breakthrough,
costs,
metal
pollution.
Through
extensive
literature
review,
this
article
charts
evolution
technology
for
heavy
current
understanding
coupled
mass
transfer
mechanisms
underlying
technology.
Moreover,
based
on
a
profound
analysis
technology’s
progression
trends,
work
introduces
direction:
CO2-N2
co-injection
an
strategy
recovery.
There
is
promising
technologies
future
that
combine
efficiency,
low
environmental
friendliness,
economic
viability,
conservation.
Furthermore,
some
research
prospects
low-carbon
situations
challenges
presented
detail.
All
all,
contribution
paper
lies
summarizing
main
enhanced
methods,
presents
novel
direction
using
its
status
situations.
Processes,
Journal Year:
2024,
Volume and Issue:
12(12), P. 2920 - 2920
Published: Dec. 20, 2024
Aiming
at
the
challenges
of
rapid
heat
dissipation,
limited
swept
efficiency,
and
a
water
cut
increase
in
steam
huff
puff
development
heavy
oil
reservoirs,
an
alternating
CO2/viscosity
reducer
method
for
IOR
was
proposed.
In
this
work,
effect
CO2
on
physical
properties
evaluated,
optimal
concentration
viscosity
synergistic
interaction
between
determined.
Next,
novel
simulation
experiments
by
three
sandpack
models
different
sizes
series
were
analyzed.
Then,
difference
pure
steam-alternating
compared.
Finally,
storage
rate
obtained
based
principle
conservation
matter.
The
results
show
that
concentration,
0.8
wt%,
can
achieve
98.5%
reduction
after
combining
CO2.
reached
about
45
cm
80
°C
fifth
cycle
due
to
effects.
significantly
reduces
during
cold
production,
with
ultimate
15.89%
higher
than
puff.
alleviates
blockages,
decreases
enhances
elastic
repulsion
energy.
highest
76.8%
occurs
initial
stage,
declining
15.2%
sixth
cycle,
indicating
carbon
sequestration
potential.
These
findings
suggest
improves
reservoir
provides
theoretical
guidance
optimizing
processes.
