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:
Nov. 20, 2007
Filed:
Mar. 03, 2005
Applicant:
Chengbao Wang, Oklahoma City, OK (US);
Inventor:
Chengbao Wang, Oklahoma City, OK (US);
Assignee:
Wood Group ESP, Inc., Oklahoma City, OK (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 43/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
A seal section for a downhole pumping system includes a fluid exchange pathway and a rotatable gravity separator. The rotatable gravity separator preferably includes a chamber, a backwash inlet connecting the chamber to the fluid exchange pathway and a backwash outlet connecting the chamber to the fluid exchange pathway. The rotatable gravity separator further includes a weight that causes the rotatable gravity separator to remain in a substantially constant orientation with respect to the force of gravity.