ESP pump for gassy wells

US6668925B2 · kind B2 · utility

Assignee

• Baker Hughes Holdings LLC · US

Inventors

• Christopher K. Shaw · Claremore, US
• David A. Voss · Tulsa, US
• Jeffrey W. Knight · Collinsville, US
• Michael J. Fox · Claremore, US
• Dewey Michael Loudermilk · Kingwood, US
• Kenneth T. Bebak · Tulsa, US

Key dates

• Filing date: Feb 1, 2002
• Grant date: Dec 30, 2003
• Expiry date: Feb 7, 2022

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B43/38
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

“Well equipment transporting well fluid from a gassy well. A conduit is hung and sealed inside a string of casing, forcing the gas and well fluid to flow into the conduit. A gas separator and a series of flow controls and valves are mounted into and run with the conduit. A pump assembly is hung and sealed into the conduit for pumping well fluid to the surface. The pump assembly is lowered and retrieved from the conduit on tubing. The pump may be located below the motor, or above the motor.”