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:
Aug. 22, 2006
Filed:
Oct. 24, 2003
Applicants:
Paul David Metcalfe, Aberdeen, GB;
Wayne Rudd, Newcastle Upon Tyne, GB;
Inventors:
Paul David Metcalfe, Aberdeen, GB;
Wayne Rudd, Newcastle Upon Tyne, GB;
Assignee:
Weatherford/Lamb, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 43/08 (2006.01); B32B 1/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A downhole filter comprises a tubular member having a wall defining a plurality of openings. The openings have an outer width less than an inner width. The parts of the opening defining the smaller width are defined by radially outer parts of the openings, such that particulates or sand prevented from passing through the openings will tend to be retained to the outside of the tubular member.