carbon nanotubes, oilfield, sealing system, nanocomposites, high pressure, high temperature (HPHT)
A novel sealing system base on MWNT (multiwalletd carbon nanotubes) and polymer nanocomposites was developed for the use in the exploration and development of hotter, deeper reservoirs. Fully dispersed and better bonding are two critical advances that enhance its mechanical properties. We solved the critical issues in 2008, and developed a novel sealing system for high pressure, high temperature reservoirs. After many successful field tests around the world, the new system was released for the oilfield. It marks a rare success story for the use of nanotechnology in energy resources.