Rotating flow control device for wellbore fluid control device
US10018012B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 14, 2012 |
| Grant date | Jul 10, 2018 |
| Priority date | — |
| Expiry date | Sep 1, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/085
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention relates to a rotating flow control device and methods of using the same for controlling wellbore fluids at the head of a riser diverter for use in offshore drilling operations or the head of a blowout preventer stacks annular for conventional land-based drilling operations. The rotating flow control device comprises a stationary housing to be mounted on the head of a riser diverter or the blowout preventer stacks annular, an inner tubular shaft that permits the passage of a tubular, sealed bearing elements for supporting and permitting the axial rotation of the inner tubular shaft, and an elastomeric stripper element attached to the inner tubular shaft for sealing around the tubular.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.