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:
Oct. 13, 1981
Filed:
May. 17, 1979
John W Erickson, Huntington Beach, CA (US);
Harold L Petrie, Sierra Madre, CA (US);
Kobe, Inc., Huntington Park, CA (US);
Abstract
A petroleum well has a plurality of centrifugal pump stages, a jet pump stage, and an electrical drive motor. A recirculated portion of the output from high pressure stages of the centrifugal pump provides power fluid for the jet pump, and the jet pump aspirates fluid from lower pressure centrifugal pump stages. The balance of the output of the high pressure stages goes to the surface as production. The output of the jet pump supplies the high pressure stages. A centrifugal cleaner upstream of the power fluid inlet for the jet pump cleans that stream of particulates. The overall flow rate through the centrifugal stages exceeds the production rate of the pump by the amount of power fluid for the jet pump. The jet pump caps the assembly and can be separately removed for servicing and adapting the pump to the flow requirements of the well.