000			01335nab a2200205 4500
005			20260520004417.0
008			260224s2013 xxu ing
041			_aInglés
245	0	0	_aA Thermally Actuated Gas-Lift Safety Valve
260			_a _b _cfeb. 2013
270			_a28/05/2013 ; 18/04/2013
300			_a7 p. ; 77-84
520			_aTranscripción 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.
581			_a1
773	0		_tSPE Journal _g18
942			_cARTICULO
100	1		_aGilbertson, Eric _953023
100	1		_aHover, Franz _953024
999			_c187611 _d187611