Expandable reamer assemblies, bottom-hole assemblies, and related methods

US9341027B2 · kind B2 · utility

Assignee

• Baker Hughes Holdings LLC · US

Inventors

• Steven R. Radford · Diemelstraße, US
• Marcus Oesterberg · Kingwood, US
• Khoi Q. Trinh · Pearland, US
• Timothy Miller · Spring, US
• Shyam Anandampillai · Houston, US
• Chad T. Jurica · Conroe, US
• Wolfgang E. Herberg · Waggum, DE
• Carsten Haubold · Celle, DE
• Christopher Jakubeit · Celle, DE
• Michael Wiegmann · Hankensbüttel, DE
• Jens Behnsen · Burgdorf, DE
• Hans-Juergen Faber · Neustadt, DE

Key dates

• Filing date: Mar 4, 2013
• Grant date: May 17, 2016
• Expiry date: Jun 29, 2034

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B47/13
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

Expandable reamer assemblies include an expandable reamer module and an activation module. An outer tubular body of the activation module is rigidly coupled to a tubular body of the expandable reamer module, and an activation member of the activation module is coupled to a sleeve of the expandable reamer module, the sleeve is coupled to at least one blade and configured to move the at least one blade into an extended position. The sleeve moves axially responsive to axial movement of the activation member. Bottom-hole assemblies include an expandable reamer module and an activation module. The activation module is coupled to the expandable reamer module and configured to provide a motive force to the sleeve to move the sleeve opposite a direction of flow of drilling fluid. Methods of using expandable reamer modules include pairing two substantially identical expandable reamer modules and two respective different activation modules.