1111_1 — Presentation — PTC — New Gas-Lift Valve.pdf New Requirements to Gas Lift Valves 31st Gas-Lift Workshop Houston, Texas February 4 – 8, 2008 Øyvind Stokka – Petroleum Technology Company (PTC) Erling Kleppa – Petroleum Technology Company (PTC)   Why new requirements? Most operators will not qualify the standard Gas Lift Valve as a […]