Active drilling measurement and control system for extended reach and complex wells

US9404359B2 · kind B2 · utility

Assignee

• SAUDI ARABIAN OIL COMPANY · SA

Inventor

• Scott Fraser · Newmarket, CA

Key dates

• Filing date: Jan 4, 2013
• Grant date: Aug 2, 2016
• Expiry date: Oct 21, 2034

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B21/103
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A dynamically controlled drill string includes a communications sub, a circulation sub and a measurement sub. The communications sub is operable to receive a wireless signals and retransmit the signals wirelessly. The measurement sub is operable to detect a downhole condition and transmit wirelessly a corresponding data signal. The circulation sub is operable to selectively permit fluid communication between the interior fluid conduit and the exterior of the dynamically controlled drill string at the circulation sub. The circulation sub is operable to selectively permit fluid communication through the internal fluid conduit at the circulation sub. A method for using the dynamically controlled drill string in a well bore includes the steps of introducing the dynamically controlled drill string into the well bore and introducing fluid operable to modify a detected downhole conditions into the well bore.