Extended reach tool
US10502014B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 3, 2018 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | May 3, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B28/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An extended reach tool includes two or more separate flow paths, wherein each of the flow paths has multiple hollow chambers connected in series. Each of the hollow chambers includes a first constricted chamber with a fluid entry, a first expansion chamber located adjacent to the lower end of the first constricted chamber, and a second constricted chamber with the upper end of connected to the lower end of the first expansion chamber. A separate second expansion chamber is connected to the lower end of a plurality of the second constricted chambers. A single port is located adjacent to the lower end of the second expansion chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.