Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: Dec. 30, 2024
Nanofluids
have
the
capacity
to
reduce
interfacial
tension
(IFT)
of
crude
oil
and
water
for
enhanced
recovery
(EOR)
operations,
but
traditional
nanoparticles
are
limited
in
tight
reservoirs
due
their
inappropriate
size
micro-nano
pores
tendency
aggregate.
In
this
paper,
Graphene
Quantum
Dots
(GQDs)
with
simple
favorable
properties
developed,
performance
mechanism
reducing
IFT
evaluated.
The
paper
also
aims
explore
effects
GQD
precursor
type,
synthesis
duration,
molar
percentages
precursors
on
IFT.
For
purpose,
citric
acid
was
used
as
a
carbon
source,
ethylenediamine,
urea,
thiourea
were
nitrogen
sources
synthesize
different
GQDs.
FTIR,
XPS,
HR-TEM,
XRD,
UV
visible,
PL
photoluminescence
identify
GQDs'
characteristics.
highest
reduction
value
is
achieved
by
using
1000
ppm
ethylenediamine-derived
GQDs,
which
reduces
from
19.03
0.70
mN/m
at
200,000
NaCl
concentrations
without
any
surfactants.
XPS
analysis
revealed
that
GQDs
exhibit
higher
pyrrolic
content
relative
intensity
ratio
sp3
C/sp2
C.
It
has
been
identified
presence
more
polar
atomic
bonds
surfaces
decreases
ability
way,
urea-derived
thiourea-derived
less
capability
reductions
12.33
18.04
concentration,
respectively.
Furthermore,
perform
optimally
approximately
5
10
h,
respectively,
3
(mole
ethylenediamine/urea
per
mole
acid),
while
show
no
significant
change
varying
times
or
ratio.
developed
provide
promising
solution
EOR
operations
unconventional
significantly
decreasing
between
nanofluids.
ACS Applied Nano Materials,
Journal Year:
2024,
Volume and Issue:
7(8), P. 9305 - 9313
Published: April 12, 2024
Carbon
dot
nanomaterials
(<10
nm)
exhibit
superior
application
prospects
as
oil
displacement
materials
for
unconventional
reservoir
development.
However,
the
limited
oil–water
and
oil–solid
interfacial
activity
of
carbon
restricts
their
broader
application.
In
this
study,
(CDs)
are
expeditiously
prepared
via
a
microwave-assisted
synthesis
method
utilizing
urea
citric
acid
precursor
compounds.
OAB-modified
active
(OCDs)
by
grafting
oleic
amidopropyl
betaine
(OAB)
through
hydrothermal
reaction
at
90
°C
5
h
using
CDs
carrier.
Stability
experiments
show
that
plentiful
hydrophilic
groups
present
on
surface
OCD
augment
electrostatic
repulsion
among
them,
thereby
imparting
dispersibility,
temperature
tolerance
(90
°C),
salt
resistance
(2.6
×
104
mg/L).
Additionally,
OCDs
demonstrate
optimal
effectiveness
concentration
0.5
wt
%.
At
concentration,
can
reduce
tension
to
0.66
mN/m
achieve
underwater
contact
angle
126°.
Within
24
h,
strip
60.6%
film.
excellent
ability
enhance
activity.
Meanwhile,
nanofluids
effectively
form
emulsions
with
crude
spontaneously
demulsify
within
2
in
state.
Core
flooding
tests
nanofluids,
when
compared
simulated
formation
water,
injection
pressure
46.3%
recovery
31.1%.
This
study
offers
promising
solution
efficient
development
reservoirs
nanomaterials.
SPE Journal,
Journal Year:
2024,
Volume and Issue:
29(07), P. 3732 - 3747
Published: March 27, 2024
Summary
The
conventional
friction
reducer,
typically
a
water-in-oil
(W/O)
emulsion,
used
in
slickwater,
encounters
challenges
related
to
poor
environmental
friendliness,
limited
stability,
and
low
activity,
hindering
its
widespread
applicability.
In
this
study,
we
synthesized
water-based
emulsion
through
water
dispersion
polymerization,
incorporating
nanoparticles
(NPs)
into
the
process
enhance
stability
activity
of
polymer
emulsion.
result
is
an
environmentally
friendly,
oil-phase-free,
instantly
dissolution,
highly
efficient
intended
optimize
utilization
efficiency
slickwater.
NP-enhanced
demonstrated
consistent
spherical
dispersion,
featuring
average
particle
size
~10
μm,
maintaining
for
more
than
6
months.
With
rapid
dissolution
water,
achieved
within
mere
38
seconds,
it
facilitated
continuous
on-the-fly
mixing.
Slickwater
composed
exhibited
outstanding
application
performance,
yielding
remarkable
76%
reduction
pipeline
friction.
presence
NPs
specific
monomers
formation
spatial
network
structure
that
maintains
high
temperature/shear
resistance
even
after
prolonged
shear.
Moreover,
system
exceptional
capacity
imbibition
oil
production.
Indoor
spontaneous
experiments
showed
final
recovery
rate
32.41%
tight
cores
(~10%
higher
systems),
depth
reached
40.2
mm
(1.2-fold
increase
compared
with
traditional
systems).
Field
were
conducted
reservoir
validate
practical
applications;
results
further
validated
effectiveness
novel
system.
treated
wells
showcased
production,
reaching
daily
production
55.8
t/d
content
as
~31%,
satisfying
predicted
target.
Langmuir,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 18, 2025
Understanding
the
interfacial
interaction
mechanisms
between
oil
and
minerals
is
of
vital
importance
in
applications
petroleum
production
environmental
protection.
In
this
work,
interactions
dodecane
with
mica
calcite
aqueous
media
were
investigated
by
using
drop
probe
technique
based
on
atomic
force
microscopy.
For
dodecane-mica
interactions,
electrical
double
layer
(EDL)
repulsion
dominated
10
mM
NaCl
solution,
a
higher
pH
facilitated
detachment
dodecane.
The
EDL
was
diminished
an
elevated
concentration,
van
der
Waals
(vdW)
attraction
triggered
attachment
surface.
presence
Ca2+
Mg2+,
weakened
leading
to
thinner
water
film,
occurred.
dodecane-calcite
large
adhesions
observed
under
all
solution
conditions,
mainly
attributed
ionic
bridging
formed
during
dissolution.
At
4,
CO2
bubbles
appeared
surface,
resulting
repulsive
vdW
which
hindered
adhesion.
surface
wettability
modified
high
concentrations
NaCl,
reduced
adhesion
oil.
effect
promoted,
enhanced
500
Mg2+
solutions.
10,
precipitates
Ca(OH)2(s)
Mg(OH)2(s)
Our
results
provided
fundamental
insights
into
oil-water-mineral
contributed
understanding
modulation
engineering
processes
enhancement
pollutant
removal
recovery.
Processes,
Journal Year:
2025,
Volume and Issue:
13(2), P. 575 - 575
Published: Feb. 18, 2025
This
study
aims
to
optimize
the
demulsification
performance
of
a
carbon
quantum
dot
(CQD)-enhanced
chemical
demulsifier
in
industrial
emulsions
under
thermal,
mechanical,
and
thermomechanical
effects.
Experiments
were
conducted
assess
treatments
like
organic
treatment
(OT),
zeta
potential
modifier
aqueous
solution
(ZPMAS),
acid
(9.25
wt.%
HCl)
at
varying
dosages,
along
with
CQD–chemical
mixtures
optimized
through
simplex-centroid
mixture
design
(SCMD)
minimize
basic
sediment
water
(BSW).
Under
scenario,
system
500
mg∙L−1
CQDs
OT
achieves
0.5%
BSW
droplet
size
63
nm,
while
an
SCMD-optimized
(500
+
380
120
ZPMAS)
0%
larger
droplets
(>70
nm).
enhance
demulsifiers
by
destabilizing
water-in-oil
(W/O)
Pickering
emulsions,
leveraging
their
nanometric
size,
high
surface
area,
thermal
conductivity,
amphiphilicity,
thanks
hydrophobic
core
hydrophilic
groups
(-OH,
NH2,
-COOH).
research
enhances
understanding
employing
green
based
on
provides
promising
cost-efficient
for
breaking
stable
petroleum
industry.
It
minimizes
use
complex
expensive
active
ingredients,
achieving
values
below
0.5%,
standard
required
crude
oil
transport
sale,
also
reducing
separation
equipment
operation
times,
improving
overall
process
efficiency.
Energy & Fuels,
Journal Year:
2025,
Volume and Issue:
39(9), P. 4227 - 4237
Published: Feb. 24, 2025
Nowadays,
novel
silicon
quantum
dots
(SiQDs)
are
applied
in
various
aspects
of
the
petroleum
industry,
especially
enhanced
oil
recovery
(EOR).
Herein,
amphiphilic
(ASiQDs)
were
synthesized
to
improve
stability
foam
formed
by
nonionic
surfactant
polyethylene
glycol
monoisodecyl
ether
(PMIE).
The
greater
and
resistance
stabilized
0.05%
PMIE-0.1%
ASiQD
system
compared
other
systems
(including
pure
PMIE
conventional
silica
nanoparticles
(SiNPs)–PMIE
systems)
confirmed
relative
volume
measurement,
half-life
Turbiscan
Laboratories
expert
analysis,
observation
morphology.
Based
on
dynamic
surface
tension
modulus
measurements,
promising
was
attributed
rigid
film
generated
largely
adsorbed
ASiQDs
with
tiny
size
moderate
hydrophobicity.
more
intensive
electrostatic
repulsion
among
smaller
bubbles,
significantly
preventing
coalescence.
Finally,
sandpack
flooding
results
suggested
PMIE-0.1%ASiQD
could
efficiently
plug
high
permeability
pore
throats
evidently
21.2%.
report
employed
efficiency
for
EOR.
Processes,
Journal Year:
2025,
Volume and Issue:
13(3), P. 761 - 761
Published: March 6, 2025
Nowadays,
carbon
dots
(CDs)
with
a
variety
of
structures
and
compositions
are
widely
applied
in
the
petroleum
industry,
including
tracers,
modification
interfacial
properties
regulation
rheological
due
to
their
excellent
modifiability,
environmental
compatibility,
straightforward
synthesis,
outstanding
photoluminescent
properties.
In
this
review,
we
summarize
applications
CDs
industry
elucidate
effects
based
on
classification
application
scenarios.
addition,
briefly
analyze
relationship
between
structure
performance,
identify
challenges
currently
facing,
discuss
structural
characteristics
high-performance
along
potential
future
applications.
The
discussion
presented
article
is
research
industry.
By
combining
these
two
areas,
review
expected
provide
guidance
researchers
working
related
areas.
Meanwhile,
also
hope
can
offer
innovative
ideas
for
further
