Wellbore sealing system with degradable whipstock
US11280142B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 15, 2014 |
| Grant date | Mar 22, 2022 |
| Priority date | — |
| Expiry date | Dec 5, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B41/0042
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A wellbore sealing system is disclosed. The wellbore sealing system includes a deflection assembly positioned in a main wellbore and a junction coupled to an uphole end of the completion deflector and extending into the lateral wellbore to form a fluid and pressure tight seal. The deflection assembly includes a degradable whipstock configured to laterally deflect a drill bit such that the drill bit drills through a sidewall of the main wellbore to form a lateral wellbore, a completion deflector coupled to and located downhole from the whipstock, and an anchoring device coupled to and located downhole from the completion deflector to prevent the deflection assembly from rotating and moving in an uphole direction and a downhole direction within the main wellbore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.