PERFORATING TYPE LOCKOUT TOOL

A tubing retrievable safety valve, lockout tool and their method of use are disclosed for locking the valve open permanently and provide access to control line pressure by perforating a piston in the valve. The lockout tool comprises a track mandrel having a ramp slidably disposed beneath a punch th...

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Bibliographische Detailangaben
Hauptverfasser:	DICKSON, RENNIE L, MEADERS, MICHAEL W
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Beschreibung
Zusammenfassung:	A tubing retrievable safety valve, lockout tool and their method of use are disclosed for locking the valve open permanently and provide access to control line pressure by perforating a piston in the valve. The lockout tool comprises a track mandrel having a ramp slidably disposed beneath a punch that is adapted to penetrate the piston wall of the valve at a point adjacent to the control fluid annulus, thereby creating a protrusion adapted to lock the valve open and establishing fluid communication between the control fluid annulus and the valve bore. 27 PERFORATING TYPE LOCKOUT TOOL A tubing retrievable safety valve, lockout tool and their method of use are disclosed for locking the valve open permanently and provide access to control line pressure by perforating a piston in the valve. The lockout tool comprises a track mandrel having a ramp slidably disposed beneath a punch that is adapted to penetrate the piston wall of the valve at a point adjacent to the control fluid annulus, thereby creating a protrusion adapted to lock the valve open and establishing fluid communication between the control fluid annulus and the valve bore. (Figs. 4A and 4B)