Deviation tolerant well plunger pump

US9915257B2 · kind B2 · utility

Assignee

• Baker Hughes, a GE company, LLC · US

Inventors

• David Garrett · Southfield, US
• Shawn Gunter · Owasso, US

Key dates

• Filing date: Nov 14, 2014
• Grant date: Mar 13, 2018
• Expiry date: Mar 18, 2036

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04B9/117
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A well pump assembly has an upper plunger and a lower plunger. A working fluid conduit extends between the upper and lower plunger. An upper piston in the working fluid conduit is connected with the upper plunger. A lower piston in the working fluid conduit is connected with the lower plunger. A downstroke working fluid is located between the upper and lower pistons in the working fluid conduit. An upstroke conduit extends between an upper port in the working fluid conduit above the upper piston and a lower port in working fluid conduit below the lower piston. An upstroke working fluid fills the upstroke conduit and the working fluid conduit above the upper piston and below the lower piston.