It is a configuration element of the intervention tools for the well completion. It is installed and lowered into the well as part
of the pipe liner or casing, designed to prevent back flow of the cement slurry or drill fluid from the borehole annulus into
the inner space of the casing. Oftenly combined together with blank casing shoe.
Overall length, inch
24.25 / 25.16
Upper thread connection, inch
API or Premium Box 4 1⁄2 - 13 ⅜
Bottom thread connection, inch
API or Premium Pin 4 1⁄2 - 13 ⅜
Work environment
Hydrocarbon / Injected fluid
Maximum working temperature, °F
212
Casing size, inch
4 1⁄2 - 13 ⅜
Nominal breakdown pressure at 80 ksi
10,000
Maximum pressure differential, withstanding by the valve from bottom to top, PSI
1469 / 2204