Patent ID: 9441467
Filing Date: 2016-09-13
CPC Classification: E21B

Claim Text:
1. A tool for a well tubular, said tool comprising: (a) a cylindrical housing adapted for assembly into a tubular for a well and defining an outer wall of said tool; (b) a sleeve defining an inner wall of said tool; said outer wall and said inner wall being spaced from each other so as to define an annular space therebetween; and (c) an actuation mechanism adapted to index in response to one or more indexing balls being deployed into said tool and thereafter to actuate in response to an actuation ball being deployed into said tool, wherein said indexing balls and said actuation ball are substantially identical; (d) wherein said actuation mechanism comprises a member adapted for indexing from an initial position sequentially through one or more intermediate positions to a terminal position, said indexed member being mounted in said annular space between said outer wall and said inner wall.