Activation Sub

B-series activation sub is designed to provide circulation between completion toolstring and annulus. B-series activation sub is kept open while running the liner in а well to allow circulation through the tubing string. The sub is closed bу pumping а ball to indicate bump pressure.

• Vertical, directional and horizontal wells

M-series activation sub is designed to provide free circulation of the drilling fluid with а subsequent pressure-tight mechanical closing. M-series activation Sub is used in wells with liners of the corresponding size.

• Vertical, directional and horizontal wells