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RTTS Circulating Valve is a locked-open/locked-closed valve that serves as both a circulating valve and bypass. The clearance between the RTTS packer (or any hookwall packer) and the casing ID is relatively small. To reduce the effect of fluid-swabbing action when the tool is run in or pulled out of...
Sleeve type drain valve is used to drain the volume fluid and release pressure when string testing finished.The drain valve consists of a ported body, sliding sleeve, and rotating nut, which controls the position of the sliding sleeve....
LPR-N Tester Valve is a full-opening, annulus pressure- operated valve. It permits measuring multiple closed-in pressures in cased holes where pipe manipulation is restricted and a full- opening string isrequired....