Materials Performance in High Pressure, High Temperature (HPHT) Ultra-Deep Drilling Environments Jeff Kirch2019-12-13T18:24:37+00:00Categories: 2011 Presentations, Metals Integrity|Tags: High-Pressure, High-Temperature, Materials| Presented at the U.S. Steel Technology Center, Munhall, PA, Nov 16, 2011. Hawk, J. A.