Method for sealing the junctions in multilateral wells
US6012526A · kind A · utility
97Cited by
25References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 12, 1997 |
| Grant date | Jan 11, 2000 |
| Priority date | — |
| Expiry date | Aug 12, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Junctions in multilateral well structures are sealed by employing a variety of degrees of premachined components and a variety of sealing embodiments, including casing segments having premachined windows, side pocket members which are adapted to reside within the string during run in and move laterally to the deployed position, woven members, cement filled ECPs, etc. Also disclosed is a downhole milling device which cuts a window in a casing segment or other material based upon a predetermined geometric pattern imposed upon the cutting tool by an integral template.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.