Retrievable pre-milled window with deflector
US6923274B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 2, 2003 |
| Grant date | Aug 2, 2005 |
| Priority date | — |
| Expiry date | Jun 10, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/061
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus for drilling one or more holes at an angle to a wellbore. The apparatus includes a tubular housing defining one or more openings. Each opening is configured to provide an exit through which a drilling assembly drills to form a hole at an angle to the wellbore. The apparatus further includes one or more deflectors. Each deflector defines a surface for guiding the drilling assembly through an opening, and each deflector is positioned inside the tubular housing such that the surface is facing the opening. The apparatus further includes an anchor having a bottom portion attached to a top portion of the tubular housing and having a top portion configured to be removably fixed to a conveyance tubular.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.