Tubing running equipment for offshore rig with surface blowout preventer
US7513308B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2005 |
| Grant date | Apr 7, 2009 |
| Priority date | — |
| Expiry date | Mar 16, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/101
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus for performing operations on an offshore well includes a subsea wellhead assembly. A riser extends from the subsea wellhead assembly to a surface vessel. A tool connects to a running string and is lowered through the riser into the wellhead assembly for performing operations at the wellhead assembly. A subsea controller is located adjacent the subsea wellhead assembly. The subsea controller controls the operation of the tool. A surface controller is positioned on the surface vessel, and is in communication with the subsea controller via a control line extending downward from the surface controller to the subsea controller. The control line extends downward from the surface controller along an exterior of the riser.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.