TCO APRS was installed in a subsea well during casing patch operations to eliminate casing collapse at production startup. The APRS was mobilized on a quick turnover which reduced the well suspension time
April 2017, First ever run in the UK sector of the North Sea. TCO Annular Pressure Relief Valve system(APRS) for installation on Apache's Callater Well. The requirements were to provide a reliable and field proven system to vent pressure from the B-annulus to the A-annulus, while at the same time maintaining and supporting pressures in between the casings.