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            Flow Lock Sub

            The Flow Lock Sub is part of an openhole multistage completion that allows circulation through the completion string until setting of hydraulic equipment above it is required.

             Render of Flow Lock Sub
            • Description Description
            • Ruler Specifications
            • Resources Resources
            Description

            The Flow Lock Sub™ is part of an openhole multistage completion that allows circulation through the completion string until setting of hydraulic equipment above it is required.

            After a ball is dropped from surface and circulated down to the Flow Lock Sub, increasing the system pressure will shift the internal components of the Flow Lock Sub and shut-in the circulating bypass ports. Hydraulic equipment above may be set, and pressure integrity is maintained above and below the Flow Lock Sub, even if the ball rolls off the seat.

            Features

            • Ball-activated sleeve seals off the casing inside diameter (ID) from the annulus
            • Once sealed, the Flow Lock Sub seals from above and below the sub
            • Compatible with a range of ball outside diameters (ODs)
            • Field-adjustable activation pressure

            Benefits

            • Once the flow path is closed, it is locked close, even without the activation ball in place
            • Provides a reliable method to set pressure-activated components in the wellbore

            Applications

            • Openhole completions that require setting of pressure-activated tools such as packers
            Specifications

            Flow Lock Sub Specifications

            Flow Lock Sub Solid steel
            OD 5.600 (142.3)
            Length 21.50 (546)
            Burst pressure 10,000 psi (69 000 kPa)
            Temperature 350 °F (177 °C)
            Activation ball size 0.750 to 1.875 in. (19.0 to 47.6 mm)
            Threads LTC standard
            Resources
            • Flow Lock Sub Data Sheet

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