S. Mamah

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...

Enhancing the Synergistic Performance of CAPB-Modified SPAM/Silica Drilling Fluid System in High Calcium and Magnesium Brine Environments: Towards Advanced Fluid Loss Control for Challenging Wells

The increasing complexity of oil and gas drilling requires drilling fluids that offer improved fluid loss control and brine stability, especially in deep wells known for their high salinity and formations rich in divalent ions. Salt-free fluids (SFBF) can cause high fluid loss, form denser filter cakes, and jeopardiz...

Review: MXenes for energy storage and conversion devices—advances in green synthesis, use of machine-learning, and electrochemical response

Retarding Mechanisms of Sulfonated Lignin Nanoparticles for Oilwell Cement Slurries at High-Temperature Conditions

Oilwell cementing in high-temperature, high-salinity reservoirs requires retarders capable of maintaining slurry stability, pumpability, and favorable rheological performance under severe downhole conditions. Conventional retarders, including sodium gluconate (SG) and sodium borate (SB), often suffer from thermal deg...