Linearly indexing well bore tool

摘要

Downhole tools that have a housing, a linearly indexing driver, a reciprocating shifter, and an actuation seat. The driver is adapted for linear indexing relative to the housing from an initial position sequentially through one or more intermediate positions to a terminal position. The shifter is adapted for axial reciprocation relative to the housing and is operatively connected to the driver and adapted to index the indexed driver from its initial position sequentially through its intermediate positions to its terminal position as the shifter reciprocates. The actuation seat is mounted on the shifter and is adapted to receive a ball for actuation of the shifter and to release the ball after the shifter has indexed the indexed driver. Thus, a series of such tools may be operated by deploying a series of balls, all of the same size, through the tools.

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 (b) an actuation mechanism, said actuation mechanism comprising:
i) a driver adapted for linear indexing relative to said housing from an initial position sequentially through one or more intermediate positions to a terminal position;ii) a shifter adapted for linear reciprocation relative to said housing, said shifter operatively connected to said indexed driver and adapted to index said indexed driver from said indexed driver's said initial position sequentially through said indexed driver's said intermediate positions to said indexed driver's said terminal position as said shifter reciprocates; andiii) an actuation seat mounted on said shifter, said actuation seat adapted to receive a ball for actuation of said shifter and to release said ball after said shifter has indexed said indexed driver.