Patent ID: 9279312
Filing Date: 2016-03-08
CPC Classification: E21B

Claim Text:
1. A downhole tool comprising: a tubular including a port; a first ball mechanism including a first shuttle axially movable within the tubular from a first position covering the port to a second position exposing the port, a first ball seat movable with the first shuttle, and a first ball seat support supporting the first ball seat, the first ball seat support positioned radially interiorly of the first shuttle, the first ball seat support releasably connected to the first shuttle in a first condition of the first ball mechanism, and the first shuttle shifted with respect to the first ball seat support in a second condition of the first ball mechanism; and a second ball mechanism including a second shuttle axially movable within the tubular from a first position exposing the port to a second position covering the port, and a second ball seat movable with the second shuttle, wherein an opening of the first ball seat is smaller than an opening of the second ball seat.