Arsa Activation Sub
Arsa Activation Sub is used with the Multistage Stimulation Assembly and it is activated by the ball.
Activation Sub allows direct circulation of fuid through the bottom of the assembly and provides complete isolation from above and blow once activated.
Activation Sub also allows pressure build up inside the MSS assembly to set an open hole packers and to activate other downhole equipment.
Activation process of the sub is done by dropping the setting ball from the surface and by building up pressure inside the tubing. Activation pressure can be adjusted by the number of shear screws.
If primary ball is failed to activate the sub (due to erosion or damage), then secondary ball can be used for activation.