Donald C Reed

US Patent:

50524917, Oct 1, 1991

Filed:

Dec 22, 1989

Appl. No.:

7/454893

Inventors:

Herbert L. Harms - Alden IA
Charles R. Moeckly - Britt IA
Donald Reed - Commerce City CO
April A. Reed - Commerce City CO
Peter A. Kaiser - New Castle WY

Assignee:

Mecca Incorporated of Wyoming - Britt IA

International Classification:

E21B 3700
F17D 100

US Classification:

166304

Abstract:

An oil tool and method for controlling the accumulation of paraffin and deposits in downhole oil string and oil transmission flow lines is provided by employing at various locations in the downhole oil string or in the oil transmission flow lines a coupling device with an inside liner of a non magnetic material surrounded by a magnet and shield of a magnetic material. The preferred application employs at least two magnets having their north pole and south pole aligned in opposite directions held in place in relation to a magnetic outer shield or casing by a non magnetic restraining ring. The non magnetic inside liner or non magnetic section of flow line in combination with the magnetic shield or casing increases the magnetic field which in combination with the electrostatic differential in the materials in the coupling and oil line prevents and controls paraffin and other substances having the potential for clogging and blocking downhole oil strings and oil transmission flow lines used for the transmission of crude oil. The novel coupling may be either employed as a threaded coupling or as a covering to cover the non magnetic tubing spliced into existing flow lines at strategic locations to prevent the clogging of crude oil transmission lines. The method and oil tool prevent the clogging of downhole oil string casing and above ground flow lines by utilizing magnetic and dissipation of electrostatic forces to increase oil production while eliminating paraffin and scale build up in downhole well pipe and flow lines.