International Journal of Polymer Analysis and Characterization,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 15
Published: Nov. 11, 2024
Polymers
play
a
crucial
role
in
enhanced
oil
recovery
(EOR)
by
increasing
the
viscosity
of
injection
fluids
and
enhancing
displacement.
The
widely
used
polymer,
partially
hydrolyzed
polyacrylamide
(HPAM),
faces
performance
degradation
high-salinity
high-temperature
environments.
This
study
explores
galactomannan
from
Stryphnodendron
polyphyllum
seeds
as
an
alternative
viscosifying
agent
for
EOR
fluids.
An
extraction
process
Barbatimão
Verdadeiro
was
developed,
yielding
23.3%
m/m.
biopolymer
characterized
using
Fourier
transform
infrared
spectroscopy
(FTIR),
nuclear
magnetic
resonance
(NMR),
thermogravimetric
analysis
(TGA),
size
exclusion
chromatography
(SEC).
Rheological
behavior
tested
brines
different
salinities,
injectivity/filterability
tests
were
performed
following
API
RP
63:1990
standards.
obtained
exhibited
mannose-to-galactose
ratio
1.32.
showed
pseudoplastic
behavior,
with
viscosities
38
cP
brine
solutions
at
7.37
s−1
60
°C.
Filterability
demonstrated
satisfactory
injectivity
factors
1.09
(8
µm)
0.67
(1.2
µm).
Compared
to
HPAM,
superior
retention
conditions,
where
HPAM
dropped
6
cP.
extracted
is
promising
applications,
offering
under
harsh
conditions
compared
traditional
HPAM.
Its
resilience
high
salinity
temperature
makes
it
viable
pre-salt
offshore
fields,
contributing
more
sustainable
efficient
recovery.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: Nov. 12, 2024
The
growing
need
for
energy
and
the
depletion
of
oil
wells
necessitate
advanced
Enhanced
Oil
Recovery
(EOR)
techniques,
particularly
water
polymer
flooding,
which
play
a
crucial
role
in
augmenting
hydrocarbon
recovery
rates.
However,
flooding
high-permeability
layers
often
leads
to
breakthroughs,
reduced
sweep
efficiency,
formation
preferential
channels,
posing
significant
challenges
reservoir
management.
Conformance
control
treatments,
including
use
microspheres,
offer
promising
solution
by
sealing
zones
enhancing
efficiency.
This
study
focuses
on
application
fluorescent
microspheres
based
polyacrylamide,
is
extensively
employed
sector
as
an
displacement
agent.
Fluorescent
polymers
called
Poly
400,
200,
600,
incorporating
cationic
methacrylamide
monomers,
were
synthesized
through
copolymerization
create
amphiphilic
with
enhanced
stability
functionality.
These
evaluated
tests
using
quarter-five-spot
model
transparent
quartz
glass
under
UV
light,
allowing
instantaneous
measurement
observation
fluorescence
intensity.
At
conditions,
experiments
confirm
that
incremental
after
13.1%,
9.1%,
6.1%
OOIP
respectively.
findings
showed
could
efficiently
target
layers,
adapt
varying
pore
throat
sizes,
improve
plugging
rate
thereby
optimizing
recovery.
A
subsequent
simulation
CMG
simulator
provided
further
insights
into
efficacy
these
EOR
agents,
revealing
their
potential
enhance
efficiency
Simulation
results
saturation
decreased
from
68%
(initial)
13.5%,
16.1%,
18.3%
600
work
highlights
valuable
tool
applications,
offering
advancements
management
optimization.
Chemical Engineering Communications,
Journal Year:
2025,
Volume and Issue:
unknown, P. 1 - 17
Published: Jan. 7, 2025
This
paper
aims
to
study
the
impact
of
AMPS
on
structure
and
viscoelastic
behavior
hydrogels.
A
copolymer
acrylamide
2-acrylamido-2-methylpropane
sulfonic
acid
(AMPSA),
N,N-methylene
bisacrylamide
(MBA),
aluminum
persulfate
(APS)
were
synthesized
using
free
radical
polymerization.
The
percentages
AMPSA
10,
30,
50,
70%.
Polyethyleneimine
(PEI),
was
added
as
a
second
crosslinker.
hydrogel's
equilibrium
swelling
microscopic
examined
through
SEM
ESEM
tests.
Rheology,
TGA,
DSC,
coreflooding
experiments
also
conducted
scrutinize
performance
under
stress
strain,
thermal
stability,
efficacy
in
reducing
water
permeability
managing
water,
respectively.
optimal
sample
exhibited
an
22
maintained
structural
strength
its
swollen
pressurized
states,
confirming
existence
porous
associated
cages.
Zener
model
corroborated
solid-like
hydrogel,
while
sweep
frequency
test
revealed
three-dimensional
structure,
elastic
state,
strength.
hydrogel
showed
impressive
capacity
retain
even
when
subjected
1%,
100%,
1000%
strains.
TGA
DSC
tests
attested
stability
ensuring
at
temperatures
exceeding
120
°C.
Finally,
results
demonstrated
significant
reduction
from
0.112
0.005
D
before
after
injecting
resulting
almost
70%
decrease
cut.
Consequently,
dual-crosslinked
with
ratio
7:3,
AM/AMPSA,
emerged
most
promising
candidate
for
injection
sandstone
reservoirs
high
temperatures.
Polymers for Advanced Technologies,
Journal Year:
2024,
Volume and Issue:
35(11)
Published: Nov. 1, 2024
ABSTRACT
Biopolymers
are
molecules
widely
used
in
many
industries
because
they
biodegradable
and
have
a
natural
origin.
Therefore,
can
be
obtained
from
renewable
resources
organisms
such
as
animals,
plants,
or
microorganisms.
Among
the
best‐known
biopolymers,
xanthan
gum
is
an
anionic
biopolymer
composed
of
glucose,
mannose,
glucuronic
acid,
pyruvic
acetyl
groups.
It
by
fermentation
with
bacteria
genus
Xanthomonas
,
has
good
physicochemical
properties,
it
biocompatible
human
cells.
However,
disadvantages
very
susceptible
to
microbial
contamination.
various
physical,
chemical,
enzymatic
modification
methods
been
developed
improve
its
biological
properties.
Modifications
backbone
chains
made
possible
create
derivatives
new
uses,
drug
delivery
systems
improving
absorption
pharmaceutical
industry
enhance
efficacy
several
treatments
therapeutic
processes,
promote
cell
proliferation
for
tissue
engineering
biomedical
applications
when
hydrogels
films.
They
also
food
products,
cosmetics,
recover
oil
water
ground,
treat
wastewater,
granting
soil
conditions
plant
vegetables
growth.
Hence,
important
know
develop
impart
properties
obtain
novel
gum.
