Gas lift valve assemblies and methods of assembling same

US9765603B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

• Xuele Qi · Niskayuna, US
• Norman Arnold Turnquist · Carlisle, US
• Roderick Mark Lusted · Niskayuna, US
• Omprakash Samudrala · San Ramon, US
• Shourya Prakash Otta · Guilderland, US
• Ricardo Lopez · Bolinas, US
• Jifeng Wang · Niskayuna, US
• Vic Arthur Randazzo · Erath, US

Key dates

• Filing date: Nov 26, 2014
• Grant date: Sep 19, 2017
• Expiry date: Jul 22, 2035

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B34/16
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A gas lift valve assembly includes a housing and a check valve. The housing defines an inlet port and an outlet port, and includes an inner casing having a radial outer surface and a radial inner surface at least partially defining a main flow passage. The check valve includes a sealing mechanism disposed around the radial outer surface of the inner casing, and a valve member including an outwardly extending sealing segment. The valve member is moveable between an open position and a closed position in which the sealing segment sealingly engages the sealing mechanism.