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:
Dec. 10, 2002
Filed:
Apr. 05, 2001
Applicant:
Inventor:
David J. Ruttley, Marrero, LA (US);
Assignee:
Rattler Tools, Inc., Harvey, LA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 2/100 ; E21B 1/000 ; E21C 2/504 ;
U.S. Cl.
CPC ...
E21B 2/100 ; E21B 1/000 ; E21C 2/504 ;
Abstract
A tool for retrieving metal debris from a wellbore has a plurality of magnet assemblies spaced longitudinally along a tool body. Each magnet assembly has a magnet member, which forms a primary debris settling area. Each magnet member is protected by a magnet protector. A secondary debris settling area is formed between a magnet and an adjacent magnet protector to allow utilization of the residual magnetic force created by the magnet members. The secondary debris settling area occupies at least half of the surface area of the primary settling area.