Coupled downhole shifting and treatment tools and methodology for completion and production operations
US12060756B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2020 |
| Grant date | Aug 13, 2024 |
| Priority date | — |
| Expiry date | Apr 5, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/142
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A bottomhole assembly (BHA) located on a conveyance string for actuating downhole tools in a wellbore, such as sleeve valves. The bottomhole assembly has a shifting tool that is capable of being hydraulically actuated independently of a mechanically actuated treatment tool also located on the BHA. The shifting tool has hydraulically actuated shifting dogs for engaging with the sleeve valves, and a shifting-assist mechanism for applying a downhole force on the BHA. The treatment tool is mechanically actuated via manipulation of the conveyance string to isolate the wellbore, for example to treat a formation through an opened sleeve valve. A hydraulically cycled flow control valve can be located on the BHA for more convenient control of the fluid flow and pressure in the BHA. The BHA can also have a repositioning mechanism for positioning the shifting tool downhole of an opened sleeve valve without requiring repositioning of the entire BHA.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.