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Development and Performance
Evaluation of the Nanoparticle-Enhanced
Seawater-Based High-Temperature-Resistant Guar Gum Fracturing Fluid
System
Xin Li (51274)
Mingwei Zhao (167087)
Huan Zhang (220065)
Lixiao Zhang (529808)
Ruiqiong Liu (25145535)
Xinjie Xu (248613)
Zhenfeng Ma (9097383)
Zhongzheng Xu (9597528)
Caili Dai (494015)
Biophysics
Biochemistry
Biotechnology
Chemical Sciences not elsewhere classified
Ecology
Biological Sciences not elsewhere classified
rigid nucleation points
resistance mechanism revealed
organic zirconium crosslinker
nonlinear elastic response
95 ° c
200 ° c
03 mpa ·
low viscosity retention
adding modified nano
cmhpg base fluid
2 </ sub
based fracturing fluids
based cmhpg solution
fracturing fluid
2 h
retained viscosity
cmhpg ).
− nh
uniformly dispersed
study provides
significantly thickened
sand ratios
results showed
proppant settling
polymer chains
physical crosslinking
performance evaluation
optimal formulation
modification improved
large strain
interfacial compatibility
insufficient sand
hydrogen bonding
flowback performance
dynamic leak
dispersion stability
damage performance
conventional system
control performance
certain extent
carrying capacity
carboxymethyl groups
5 wt
42 times
4 wt
30 %.
08 wt
05 wt
To address the problems of low viscosity retention, and
insufficient
sand-carrying capacity for seawater-based fracturing fluids in deepwater
high-temperature reservoirs, this study enhanced the fracturing fluid
by adding modified nano-SiO<sub>2</sub> (M-NS). A seawater-based,
high-temperature-resistant fracturing fluid system was constructed
from M-NS and carboxymethyl hydroxypropyl guar gum (CMHPG). The results
showed that 3-aminopropyltriethoxysilane (APTES) modification improved,
to a certain extent, the dispersion stability and interfacial compatibility
of nano-SiO<sub>2</sub> (NS) in the seawater-based CMHPG solution.
The optimal formulation of the M-NS-enhanced system was 0.4 wt % CMHPG,
0.5 wt % organic zirconium crosslinker, 0.08 wt % M-NS, 0.1 wt % APS,
and 0.05 wt % SDS. After shearing at 200 °C and 100 s<sup>–1</sup> for 2 h, the retained viscosity was 60.03 mPa·s, which was
1.42 times that of the conventional system. At 95 °C, no proppant
settling was observed at sand ratios of 10%, 20%, and 30%. In addition,
the fracturing fluid exhibited favorable breaking and flowback performance,
dynamic leak off control performance, and formation-damage performance.
Investigation of the high-temperature-resistance mechanism revealed
that the M-NS-enhanced fracturing fluid system demonstrated excellent
viscosity recovery and nonlinear elastic response under large strain.
This improvement is attributed to the formation of physical crosslinking
through hydrogen bonding between the −NH<sub>2</sub> on the
M-NS surface and the hydroxyl and carboxymethyl groups on the polymer
chains. This physical crosslinking mechanism likely synergizes with
the organic zirconium chemical crosslinking to construct a dual-network
structure. Moreover, M-NS is uniformly dispersed in the CMHPG base
fluid, acting as rigid nucleation points and a skeleton. Consequently,
the network skeleton of the enhanced gel is significantly thickened,
and the structure of the gel is enhanced. This study provides a seawater-based,
high-temperature-resistant guar gum fracturing fluid system for deepwater
and ultra-deepwater high-temperature reservoirs, demonstrating significant
engineering application potential.
2026-09-30T00:00:00Z
Text
Journal contribution
10.1021/acsapm.6c02597.s001
https://figshare.com/articles/journal_contribution/Development_and_Performance_Evaluation_of_the_Nanoparticle-Enhanced_Seawater-Based_High-Temperature-Resistant_Guar_Gum_Fracturing_Fluid_System/34036581
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