01335nab a2200205 4500 20260520004417.0 260224s2013 xxu ing Inglés A Thermally Actuated Gas-Lift Safety Valve feb. 2013 28/05/2013 ; 18/04/2013 7 p. ; 77-84 Transcripción del resumen del autor: Most offshore oil wells use flow-control safety valves that are either actively controlled from the surface or passively actuated by pressure changes. In this paper, we propose a passive, thermally actuated safety valve that adds redundancy to well systems and significantly increases well safety. We use quasistatic thermal modeling, validated with experimental downhole data, to identify and characterize a suitable temperature regime for shape memory alloy actuation. We develop a complete loading and shut-in procedure with the new valve that is consistent with current practice in artificial lift. Finally, through a true-scale stainless-steel prototype, we demonstrate essential manufacturability and successful valve closure in accordance with predictions. 1 SPE Journal 18 ARTICULO Gilbertson, Eric 53023 Hover, Franz 53024 187611 187611 0 0 0 0 255430 BAAB BAAB 2026-03-06 200059745 0 200059745 2026-03-06 00:17:33 2026-03-06 ARTICULO