At certain conditions, the good performance of synthetic-based mud (SBM) will degrade, particularly because of the effect of chemical instability under high temperature. The study of nanoparticles in smart fluids in drilling operations has been gaining attention worldwide. This study intends to describe the improvement in performance of SBM with silicon dioxide (SiO2) nanopowder (nanosilica) at different concentrations.
Recently, research into the use of nanotechnology to design smart fluids containing nanoparticles has been conducted. This enhanced formulation with nanoparticles is intended to become a system optimizer, particularly with an aim toward enhancing filtration performance and providing better rheological behavior. The use of nanoparticles as a system optimizer corresponds with the fact that nanoparticles have better thermal stability [good for high-pressure/high-temperature (HP/HT) conditions], are able to serve as bridging agents in fluid-loss systems to control lost circulation, and form Pickering emulsions for stabilizer systems.
Although this research began almost a decade ago, there is no consensus about what percentage of nanoparticles must be added to a system to achieve optimal performance of the drilling fluid in reducing the drilling-fluid cost in total. Therefore, this study intends to investigate the role of nanosilica in improving SBM rheological properties and to identify the optimal concentration of nanosilica in SBM formulations....
Optimal Nanosilica Concentration in Synthetic-Based Mud for HP/HT Wells
26 October 2016