Expandable bullnose assembly for use with a wellbore deflector
US9803438B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2016 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | May 4, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B41/0035
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method includes introducing a bullnose assembly into a main bore of a wellbore, the bullnose assembly including a body and a bullnose tip actuatable between a default configuration, where a collet body forming part of the bullnose tip exhibits a first diameter, and an actuated configuration, where the collet body exhibits a second diameter different than the first diameter. The bullnose assembly is then advanced to a deflector arranged within the main bore and defining a first channel that exhibits a predetermined diameter and communicates with a lower portion of the main bore, and a second channel that communicates with a lateral bore. The bullnose assembly is then directed into either the lower portion of the main bore or the lateral bore based on a diameter of the collet body as compared to the predetermined diameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.