Device with diameteral magnetic arrays for installation in magnetic subs for the remediation and mitigation of scale in production columns

Patent metadata

Field	Value
Publication number	US-12580112-B2
Application number	US-202318354079-A
Country	US
Kind code	B2
Filing date	Jul 18, 2023
Priority date	Jul 20, 2022
Publication date	Mar 17, 2026
Grant date	Mar 17, 2026

Abstract

The present invention refers to a device with diametral magnetic arrays for installations in magnetic SUBs, aiming the remediation and mitigation of inorganic and organic scales in production columns. The proposed magnetic device meets several specific criteria based on the magnetohydrodynamic model (MHD). After applying the said device with the proposed magnetic field, an efficiency of the scale inhibition was experimentally observed through laboratory tests, obtained from the values of the masses encrusted in the walls of the experimental bench system in the laboratory, with respect to the application without magnetic field. The device described herein can be installed in any pipeline used to transport fluids, including underwater pipelines for oil wells. These fluids can be oils, lubricants, gases, steams, water, petroleum or liquids in general.

First claim

The invention claimed is:

1 . A device with magnetic arrays for the remediation and mitigation of scale in production columns, the device comprising:
a plurality of cylindrical magnetic arrays, wherein each of the plurality of cylindrical magnetic array comprises:
a plurality of permanent magnets positioned in a ring shape, wherein each of the plurality of permanent magnets is separated by magnet separator plates which prevent damage or demagnetization of the permanent magnets; and
a plurality of support plates comprising a plurality of magnetic array separator plates arranged in a ring-type shape, wherein each of the plurality of cylindrical magnetic arrays is separated by one of the plurality of support plates to close the magnetic field lines that are produced between each cylindrical magnetic array.

2 . The device of claim 1 , wherein the ring shape of the plurality of cylindrical magnetic arras comprises an outer ring diameter of 17.9 cm, an inner ring diameter of 11.6 cm, and a length of 7 cm.

3 . The device of claim 1 , wherein each of the plurality of permanent magnets is a trapezoidal shape.

4 . The device of claim 1 , wherein each of the plurality of permanent magnets is orthogonal in orientation to an axial axis of the magnetic arrays.

5 . The device of claim 1 , wherein the plurality of permanent magnets comprise high-grade neodymium (NdFeB) magnets.

6 . The device of claim 1 , wherein each of the plurality of the magnet separator plates comprise one or more of superalloy class steel, and special nickel alloy.

7 . The device of claim 1 , wherein each of the plurality of the magnetic array separator plates comprise superduplex steel.

8 . The device of claim 1 , wherein each of the plurality of the support plates comprise one or more of superalloy class steel, and special nickel alloy.

9 . The device of claim 1 , wherein each of the plurality of cylindrical magnetic array produces a uniform dipole magnetic field line directed at 90° in relation to a neighboring magnetic array.

10 . The device of claim 1 , wherein the plurality of cylindrical magnetic arrays are configured to be positioned radially around a pipeline, and wherein the plurality of cylindrical magnetic arrays are configured to reduce bioscale formation in the pipelines.

11 . The device of claim 10 , wherein the pipeline carries one or more of an oil, lubricant, gas, steam, water, or petroleum.

12 . The device of claim 7 , wherein each of the plurality of the magnetic array separator plates comprise a thickness of 2 mm.

13 . The device of claim 10 , wherein the pipeline is an underwater oil pipeline.

Assignees

• Petroleo Brasileiro S A —Petrobras
• Centro Brasileiro De Pesquisas Fisicas

Inventors

• Sommer Rubem Luis
• Ignacio Pereira Alexandre Zacarias
• Gomes Da Silva Bruno
• Alves Da Silva De Medeiro Cilene Labre
• Leibsohn Martins Andre
• De Paula Silva Alexandre Mello
• Duarte Ferreira Marcus Vinicius
• López Meza Elvis Oswaldo
• Salatiel De Oliveira Fernando
• Lisboa Santos Hugo Francisco
• Barbosa Castro Bruno
• Pinheiro Schluter Helga Elisabeth
• Oliveira De Oliveira Paulo Guilherme
• Sinnecker João Paulo

Classifications

• F16L58/00

  Protection of pipes or pipe fittings against corrosion or incrustation (compound tubes F16L9/14) · CPC title

• B03C1/288

  disposed at the outer circumference of a recipient · CPC title

• B03C1/0332

  using permanent magnets · CPC title

• B03C2201/18

  Magnetic separation whereby the particles are suspended in a liquid · CPC title

• E21B37/00 Primary

  Methods or apparatus for cleaning boreholes or wells (E21B21/00 takes precedence) · CPC title