Detailed Description

The AV annulus safety valve is a fully retrievable high performance annulus safety system packer with integral annulus safety valve. The system provides annular bypass through a hydraulically operated poppet valve. The AV system is run in a single trip in conjunction with a setting sub that can be shifted for hydraulic tubing-set or can be alternatively control-line set from surface. Applications The AV system is used for controlling annulus fluids in gas lift applications, monitoring of annulus pressures in critical situations, and in one- or two-trip annulus safety system completions. The completion can be run to depth and set with the surface tubing hanger flanged up. It can also be used in completions in which spacing out against a subsurface tubing hanger is required (i.e., no elastomeric expansion joint necessary). The tailpipe can be left in either tension or compression. The system can be used where high tensile loads and pressure differentials exist with the completion anchored in unsupported or poor condition casing. Features » Interlock system prevents preset » Tubing test facility while running » Hydraulically set in one trip on tubing with no mandrel movement » Annulus-mounted release mechanism » Internal/external components rotationally locked together » Element anti-extrusion system » One-trip system allows multiple control-line bypass » Premium thread connections — no elastomeric seals tubing to annulus » Primary release method is applied tubing pressure using dedicated punch release tool on slickline » Secondary release method available with simple tubing cut *information collected from manufacturer literature