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. 24, 2004
Filed:
Sep. 19, 2002
Applicant:
Inventors:
Michael J. Guidry, Jr., Hockley, TX (US);
William D. Murray, Tomball, TX (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 4/300 ;
U.S. Cl.
CPC ...
E21B 4/300 ;
Abstract
A downhole pump system allows fluid to be pumped from a well to the surface through a production tubing string, while also allowing the downhole pump to be retrieved to the surface while the production tubing string remains in the well. The downhole pump may include a hold down housing , a mandrel , a drive coupling , and a lifting nut . The pump is driven by a drive rod, which conventionally extends from the surface to the downhole pump. Axial movement of pump components may be prevented by a spring lock mechanism , while torque transmitting surfaces prevent rotation of the pump housing with respect to a landing nipple