Behavior of Cross‐Linked Polyacrylic Acid Microspheres in Drilling Fluids DOI

Zhenxuan Yang,

Jincheng Zou,

Yifan Xie

et al.

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: April 22, 2025

ABSTRACT To develop a temperature‐resistant and salt‐resistant drilling fluid filtrate reducer that meets diverse application requirements to enrich the understanding of structure–property relationships cross‐linked polymer microspheres, polyacrylic acid microsphere (CPAA) loss agent was prepared by water dispersion polymerization using acrylic as monomer. The structural characteristics CPAA were investigated, its behavior in fluids evaluated. findings reveal CPAA, with abundant carboxyl hydration groups simple composition, has an average particle size approximately 700 nm initial thermal decomposition temperature 266°C. exhibits excellent filtration reduction viscosity‐increasing effects fluids, showing superior salt resistance. When 0.8 wt% added 4 bentonite fluid, apparent viscosity increased 116 mPa·s, decreased 5 mL. After aging at 180°C for 16 h, remained 8 mL, it maintained 14 mL after adding 20 NaCl. Finally, resistance compared those different possible mechanisms discussed.

Language: Английский

Behavior of Cross‐Linked Polyacrylic Acid Microspheres in Drilling Fluids DOI

Zhenxuan Yang,

Jincheng Zou,

Yifan Xie

et al.

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: April 22, 2025

ABSTRACT To develop a temperature‐resistant and salt‐resistant drilling fluid filtrate reducer that meets diverse application requirements to enrich the understanding of structure–property relationships cross‐linked polymer microspheres, polyacrylic acid microsphere (CPAA) loss agent was prepared by water dispersion polymerization using acrylic as monomer. The structural characteristics CPAA were investigated, its behavior in fluids evaluated. findings reveal CPAA, with abundant carboxyl hydration groups simple composition, has an average particle size approximately 700 nm initial thermal decomposition temperature 266°C. exhibits excellent filtration reduction viscosity‐increasing effects fluids, showing superior salt resistance. When 0.8 wt% added 4 bentonite fluid, apparent viscosity increased 116 mPa·s, decreased 5 mL. After aging at 180°C for 16 h, remained 8 mL, it maintained 14 mL after adding 20 NaCl. Finally, resistance compared those different possible mechanisms discussed.

Language: Английский

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