Active equivalent circulating density control with real-time data connection
US8973676B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 28, 2011 |
| Grant date | Mar 10, 2015 |
| Priority date | — |
| Expiry date | Sep 4, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B21/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus uses well devices, both downhole and at the surface, to control at least one condition in a wellbore. The downhole equipment includes flow restriction devices that modulate fluid flow along a wellbore annulus, flow bypass devices that selectively bypass fluid flow from wellbore tubular bore to the wellbore annulus, and downhole sensors that generate information relating to a selected parameter of interest. The surface equipment includes a pump that circulates a drilling fluid in the wellbore. Controllers, which may be downhole and/or at the surface, use sensor information to generate advice parameters or signals that may be used to control the flow restriction devices, the flow bypass devices, and/or the fluid circulation pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.