The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 13, 2022
Filed:
Feb. 09, 2021
Applicant:
Silverwell Technology Ltd., Histon, GB;
Inventor:
Joel David Shaw, Houston, TX (US);
Assignee:
SILVERWELL TECHNOLOGY LTD., Cambridgeshire, GB;
Primary Examiner:
Int. Cl.
CPC ...
E21B 34/16 (2006.01); E21B 43/12 (2006.01); E21B 47/06 (2012.01);
U.S. Cl.
CPC ...
E21B 43/123 (2013.01); E21B 34/16 (2013.01); E21B 47/06 (2013.01);
Abstract
Liquid is unloaded from a well with a hybrid gas lift system that includes a lift gas source and valves for injecting lift gas into production tubing. The types of valves include pressure production operated ('PPO') valves and a surface operated valve. Pressure inside the production tubing is measured to monitor operation of the PPO valves, and identify if the PPO valves are experiencing and anomaly, such as multi-pointing or chattering. The surface operated valve is selectively actuated to correct anomalous operation of the PPO valves.