Expandable and variable-length bullnose assembly for use with a wellbore deflector assembly
US9260945B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2013 |
| Grant date | Feb 16, 2016 |
| Priority date | — |
| Expiry date | Aug 22, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B23/12
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A wellbore system includes an upper deflector arranged within a main bore of a wellbore and defines first and second channels. A lower deflector is arranged within the main bore and spaced from the upper deflector by a predetermined distance and defines a first conduit exhibiting a predetermined diameter and communicating with a lower portion of the main bore and a second conduit that communicates with a lateral bore. A bullnose assembly includes a body and a bullnose tip arranged at a distal end of the body, the bullnose assembly being actuatable between a default configuration and an actuated configuration. The upper and lower deflectors direct the bullnose assembly into one of the lateral bore and the lower portion of the main bore based on a length and a diameter of the bullnose tip as compared to the predetermined distance and the predetermined diameter, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.