Multi-activation reamer with activation confirmation
US12060794B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 11, 2022 |
| Grant date | Aug 13, 2024 |
| Priority date | — |
| Expiry date | Nov 16, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/18
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A multi-activation reamer optionally includes modular activation and pulse confirmation blocks for activating the reamer and confirming activation. A reamer activation signal may be communicated downhole, optionally using an activation sequence of drill string flow and rotation detectable by downhole sensors. An on-board controller receives the activation signal and opens an activation flow path in the activation block to hydraulically actuate the reamer arms. A pulse flow path is also opened in the pulse confirmation block, optionally using pressure from the activation flow path. Flow along the pulse flow path is modulated to generate a flow pattern detectable uphole of the reamer to confirm activation of the reamer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.