Development and Performance Assessment of Sulfonated Lignin Nanoparticles as a Bio-Based Retarder for High-Temperature Oil Well Cementing
Conventional cement retarders tend to raise slurry viscosity, impair pumpability, reduce compressive strength, and shorten effective thickening time, thereby complicating cement placement in deep wells. In this study, sulfonated lignin nanoparticles (SLNPs) derived from empty fruit bunch (EFB) biomass were developed...