Drillable window assembly for controlling the geometry of a multilateral wellbore junction
US11448041B2 · kind B2 · utility
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18References
20Claims
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Key dates
| Filing date | Jul 28, 2020 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | Aug 6, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B29/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Provided, in one aspect, is a drillable window assembly. The drillable window assembly, in this aspect, includes a first precut casing joint, the first precut casing joint including a first casing tubular having two or more radially offset slots along an interior surface thereof, and a second precut casing joint coupled to the first precut casing joint, the second precut casing joint including a second casing tubular having a sidewall opening formed therein. The drillable window assembly, as contained within this aspect, further includes an outer sleeve surrounding the sidewall opening in the second casing tubular.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.