Seabed well influx control system
US9080427B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 2012 |
| Grant date | Jul 14, 2015 |
| Priority date | — |
| Expiry date | Oct 18, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/16
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Apparatuses useable in an offshore drilling installation close to the seabed for controlling well influx within a wellbore are provided. An apparatus includes a centralizer and flow constrictor assembly, a sensor and a controller. The centralizer and flow constrictor assembly are configured to centralize a drill string within a drill riser and regulate a return mud flow. The sensor is located close to the centralizer and flow constrictor assembly and configured to acquire values of at least one parameter related to the return mud flow. The controller is coupled to the centralizer and flow constrictor assembly and the sensor. The controller is configured to control the centralizer and flow constrictor assembly to achieve a value of a control parameter close to a predetermined value, based on the values acquired by the sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.