... temperature ht application hp ht subsurface safety valve closure mechanism end user subsurface safety valve safety valve regulatory requirement application complex reservoir completion equipment hpht requirement valve hp ht application upstream oil & gas OTC 23429 Design and Development...

...), operators need an efficient and reliable solution to prevent fluid loss when installing and pulling the upper completion. With recent advancements in barrier valve technology, operators can realize savings for their completions systems. Typically, when the upper completion is pulled, the closure mechanism...

... performance. This paper describes a new contoured, non-resilient flapper (CNRF) closure mechanism that achieves a true metal-to-metal seal without an elastomeric or resilient seal and passes API 14A Class I and II testing. The CNRF technology can be incorporated into both the conventional "flat plate" flapper...