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:
Jun. 28, 1994
Filed:
Feb. 17, 1993
Applicant:
Inventor:
James O Evans, Pampa, TX (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166248 ; 166 665 ;
Abstract
An apparatus to extract electromagnetically susceptible fluids and electromagnetically susceptible particles from a subterranean well having a shaft or tube extending from the surface to a fluid-containing formation and a mechanism to deliver the fluids and particles to the surface from the fluid-containing formation. The apparatus includes at least one electromagnetical coil within the shaft or tube. A direct current is supplied to the electromagnetic coil to generate a electromagnetic field in the fluid-containing formation. The magnetically susceptible fluids and particles are attracted toward the shaft tube through use of the electromagnetic field.