Arc guiding, gripping and sealing device for a magnetically impelled butt welding rig

US9308600B2 · kind B2 · utility

Assignee

• Baker Hughes Holdings LLC · US

Inventors

• Thomas Hassel · Hannover, DE
• Aret Varahram · Hannover, DE
• Florian Baer · Hannover, DE
• Sven Mitulla · Braunschweig, DE
• Joerg Lehr · Sulingen, DE
• Ludger Overmeyer · Bordenau, DE
• Hans Lothar Wohlgemuth · Werder (Havel), DE
• Friedrich-Wilhelm Bach · Nuremberg, DE
• Dominik Brouwer · Burgwedel, DE

Key dates

• Filing date: Oct 14, 2011
• Grant date: Apr 12, 2016
• Expiry date: Feb 2, 2033

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B23K2101/10
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A magnetically impelled arc butt (MIAB) welding device positioned on the rig floor heats facing ends of a pair of wellbore tubulars. After the facing ends are heated and/or melted, a force application device compressively engages the facing ends to form a welded joint.