Solid-core filament-wound composite mandrel
US10494893B2 · kind B2 · utility
3Cited by
1References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2017 |
| Grant date | Dec 3, 2019 |
| Priority date | — |
| Expiry date | Nov 13, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/134
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A technique for manufacturing a millable bridge plug for plugging of a wellbore during, for example, a fracturing operation. A bridge plug is constructed with an obstructed internal passage. The obstructed internal passage is formed by winding a composite material about a wrapping mandrel having at least one cylindrical part and a solid part coupled thereto. The cylindrical part is removed after a curing process leaving a mandrel with a plugged internal passageway upon which a seal member combined with a plurality of slips for engaging a surrounding wall, e.g. a surrounding wellbore wall, may be coupled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.