Wellbore tool with pressure actuated indexing mechanism and method
US10344560B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2015 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Nov 16, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Pressure activated counting/indexing mechanisms for hydraulic fracturing sleeves and related processes are provided. The hydraulic fracturing apparatuses can include a tubular body having a housing and a flow port, a movable inner sleeve within the tubular body slidable from a first position blocking the flow port and a second position exposing the flow port; an inner indexing mechanism capable of being moved through a plurality of positions and can include the inner sleeve having a counting track comprising a plurality of different grooves; and a counting mechanism that can include a circular ring and pin that can be axially and rotationally movable in the counting track; an actuating mechanism can rely on the auto-jay counting mechanism to provide a mechanical signal to either allow an actuating member to pass through and not open the flow ports or be retained so pressure shifts the sleeve to open the flow ports.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.