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:
Feb. 05, 1991
Filed:
May. 09, 1989
Elton D Fowler, Victoria, TX (US);
Eileen C Fowler, Victoria, TX (US);
Other;
Abstract
A well pumping system uses a closed gas cycle to periodically unload a pumping chamber in a well. The system includes a tubing string having a downhole pumping chamber providing a check valve at the lower end. A packing assembly defines the upper end of the pumping chamber and includes a dip tube having a check valve allowing upward liquid movement through the dip tube. A conduit passes through the packing assembly. Pressurized gas is periodically pumped down the conduit to force liquid upwardly through the dip tube and tubing string. Cycling of the pressurized gas is controlled by a liquid seal control assembly at the surface. When the pumping chamber has been unloaded, the gas therein flows up the conduit and through the seal control assembly to a suction tank. The pressurized gas is thus maintained in a closed cycle.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile