THE ANNULUS PRESSURE OPERATED TESTER VALVE IS A FULL-OPENING, ANNULUS PRESSUREOPERATED VALVE.
It permits measuring multiple closed-in pressures in cased holes where pipe manipulation is restricted and a full-opening string is required. The nitrogen chamber is charged at the surface to a selected pressure determined by surface temperature and bottomhole temperature and pressure. If the intended test requires a permanent packer that uses a stinger mandrel or seal nipple, a variety of World Oil Tools Inc. bypass tools are available, depending on field application, to help ensure that the formations and downhole equipment are protected from excessive pressure buildup.
It permits measuring multiple closed-in pressures in cased holes where pipe manipulation is restricted and a full-opening string is required. The nitrogen chamber is charged at the surface to a selected pressure determined by surface temperature and bottomhole temperature and pressure. If the intended test requires a permanent packer that uses a stinger mandrel or seal nipple, a variety of World Oil Tools Inc. bypass tools are available, depending on field application, to help ensure that the formations and downhole equipment are protected from excessive pressure buildup.
