In
the
process
of
developing
deep
oil
and
gas
resources,
problem
high
temperature
salinity
in
strata
has
become
a
serious
challenge
faced
by
water-based
drilling
fluids.
Under
conditions,
fluids
must
maintain
good
rheological
properties
to
ensure
safe
efficient
work.
this
study,
temperature-
salt-resistant
viscosifier
(DASL)
was
synthesized
using
N,
N-dimethylacrylamide,
2-Acrylamido-2-methylpropane
sulfonic
acid,
sodium
p-styrene
sulfonate,
lauryl
methacrylate
as
monomers
with
double
backbone
structure
micro
crosslinking
hydrophobic
association
structures.
The
results
pyrene
fluorescence
probe
test
transmission
electron
microscopy
observation
showed
that
DASL
an
obvious
associative
structure.
Moreover,
due
presence
microcrosslinked
structure,
exhibits
shear
thinning
property
thixotropy
aqueous
solution.
conditions
200℃
35
wt%
NaCl,
apparent
viscosity
fluid
2
added
24.5
mPa⸱s,
filtration
only
9.2
mL.
addition,
mechanism
studies
have
shown
dual
skeleton
improves
its
salt
resistance.
can
adsorb
bridge
bentonite
particles,
increase
internal
friction
structural
fluid,
enhance
mesh
improve
colloidal
stability
reasonable
particle
size
distribution
which
enable
significantly
while
reducing
loss
fluid.
This
work
demonstrates
polymers
structures
application
effects
for
Colloids and Surfaces A Physicochemical and Engineering Aspects,
Journal Year:
2023,
Volume and Issue:
683, P. 133001 - 133001
Published: Dec. 15, 2023
Drilling
fluid
plays
a
crucial
role
in
the
drilling
operation
of
oil
and
gas
wells
by
serving
various
functions
including
controlling
formation
pressures,
preserving
borehole
stability,
removing
drill
cuttings.
However,
loss
into
formations
can
lead
to
permeability
damage,
groundwater
contamination,
altered
integrity.
In
addition,
waste
generated
from
activities
poses
environmental
issues,
particularly
when
fluids
containing
substances,
such
as
heavy
metals
are
discarded.
Water-based
(WBDFs)
preferred
due
their
eco-friendliness
cost-effectiveness.
they
suffer
inadequate
rheological
filtration
properties,
prompting
introduction
additives.
This
study
evaluates
use
wheat
grain
nano-biodegradable
additives
WBDFs,
focusing
on
different
sizes
powder
ranging
nano
course
particle
size.
Nano-biopolymers
(WNBPs)
were
prepared
breaking
down
nanosized
structure
using
ball
mailing
approach
characterized
XRF,
FTIR,
TGA,
DLS,
SEM
TEM.
Several
reference,
modified,
biodegradable
API
SPEC
13
A
standard,
carboxymethyl
starch
(CMS),
(WP)
at
75-600
µm
nano-biopolymer
(WNBPs),
respectively.
The
formulated
investigated
conducting
measurements,
pH,
rheology,
modeling.
obtained
results
show
that
exhibited
alkaline
pH
above
10
keeps
drillpipe
equipment
corrosion.
developed
WNBPs
significant
improving
properties
reference
but
not
effective
CMS.
maximum
gel
strength
957.6
pa
was
adding
2
wt.%
increased
1100
temperature
70
°C.
Meanwhile,
same
nanoparticles
enabled
increasing
plastic
viscosity
0.03
0.09
pa.s
decreased
0.07
under
influence
high
temperature.
terms
thinning
behavior,
powders
providing
behavior
compared
with
CMS-modified
fluid.
Adding
19.5
14
mL
fine
WPs
have
stronger
lowered
rate
11.5
mL.
ACS Applied Nano Materials,
Journal Year:
2024,
Volume and Issue:
7(13), P. 15819 - 15832
Published: June 20, 2024
Water-based
drilling
fluids
are
prone
to
contamination
by
high
temperatures
and
salt,
resulting
in
a
deteriorated
filtration
performance
of
the
fluids,
posing
significant
threat
safety
operations.
This
study
utilized
N,N-dimethylacrylamide
(DMAA),
2-acrylamido-2-methyl-1-propanesulfonic
acid
(AMPS),
dimethyldiallylammonium
chloride
(DMDAAC),
N-vinylpyrrolidone
(NVP),
nanomaterials
(nano-SiO2
nanolaponite)
prepare
polymer
nanocomposite
NP-3
as
filtratef
reducer
for
fluids.
The
thermal
stability
evaluation
solution
revealed
that
degradation
temperature
order
different
structural
units
is
DMAA
<
AMPS
≈
DMDAAC
NVP,
resistance
220
°C.
Evaluation
fluid
demonstrated
3.5
wt
%
enabled
resist
from
15
NaCl
at
230
°C,
with
an
American
Petroleum
Institute
(API)
loss
high-temperature
high-pressure
(HTHP)
after
hot
rolling
4.2
22.0
mL,
respectively.
At
temperatures,
composite
releases
nanoparticles,
which
enhance
density
filter
cake,
allowing
adjustable
enhanced
control
under
high-salty
conditions.
