Indexing Well Bore Tool and Method for Using Indexed Well Bore Tools

摘要

Downhole tools that have a housing and an actuation mechanism. The actuation mechanism is adapted to index in response to one or more balls being deployed into said tool and thereafter to actuate in response to another said ball being deployed into said tool. The indexing balls and the actuation ball are substantially identical. The actuation mechanism may comprise a member adapted for indexing from an initial position sequentially through one or more intermediate positions to a terminal position where the indexed member is mounted in an annular space between an outer wall and an inner wall. The tool may comprise a central conduit which is substantially uniform internal diameter substantially free of profiles. Methods are provided that include deploying an ancillary tool through the tool which has not been actuated or drilled out.

主权项

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 balls being deployed into said tool and thereafter to actuate in response to another said 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.