Deflector-less multilateral system using a buoyant guide sub
US11993993B2 · kind B2 · utility
1Cited by
1References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2022 |
| Grant date | May 28, 2024 |
| Priority date | — |
| Expiry date | Feb 17, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/061
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Provided is a buoyant guide sub for use with a downhole oilfield conveyance. The buoyant guide sub, in one aspect, includes a hollow tubular structure, the hollow tubular structure including one or more tubular walls. The buoyant guide sub, according to at least one aspect, further includes a housing coupled to and slidable relative to the hollow tubular structure, the hollow tubular structure and the housing operable to form a pressurized chamber, the hollow tubular structure and housing having a combined mass per unit volume less than a specific gravity of 2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.