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:
May. 13, 1997
Filed:
Jan. 02, 1996
Woon Y Lee, Bartlesville, OK (US);
Camco International Inc., Houston, TX (US);
Abstract
A downhole pumping system for recovering liquids and gas, comprising a first centrifugal pump having internal features for mixing introduced gas into introduced liquids, and a second centrifugal pump having an intake in fluid communication with a discharge of the first centrifugal pump. In one prattled embodiment the internal features for mixing comprise improved impellers having a balance hole that extends through an upper surface of the impeller body into each of a plurality of internal flow chambers, and an additional passage in at least a plurality of the flow chambers. The additional passages cause some fluid to be recirculated in a manner that causes introduced gas to be mixed into the liquids, thereby increasing the pump's gas volume recovery ability.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile