Downhole activation assembly and method of using same

A downhole tool positionabie n a wellbore penetrating a subterranean formation, the downhole tool comprising:

• a conveyance;
• a bottom hole assembly deployable into the wellbore by the conveyance, the bottom hole assembly carrying a downhole component;
• a downhole activation assembly positionable about the bottom hole assembly, the activation assembly comprising:
• a housing operatively connectable to the downhole tool;
• a spring-loaded sleeve slidably positionable in the housing, the sleeve having a flow channel therethrough and an outer surface defining a chamber between the sleeve and the housing, the chamber divided into an upper variable volume chamber and a lower variable volume chamber, the upper and lower variable volume chambers in fluid isolation from each other, the sleeve having inlets therethrough about a sleeve end thereof to permit fluid from the flow channel to pass therethrough;
• and
• a ball catcher slidably positionable in the housing, the ball catcher having a catcher end engageable with the sleeve end to selectively divert the fluid thereabout and a ball seat therein to receivingly engage a ball passing through the sleeve whereby the ball catcher selectively moves the downhole component between activation positions.