EP0724545A1 - Apparatus for magnetically treating flowing liquids - Google Patents
Apparatus for magnetically treating flowing liquidsInfo
- Publication number
- EP0724545A1 EP0724545A1 EP94931419A EP94931419A EP0724545A1 EP 0724545 A1 EP0724545 A1 EP 0724545A1 EP 94931419 A EP94931419 A EP 94931419A EP 94931419 A EP94931419 A EP 94931419A EP 0724545 A1 EP0724545 A1 EP 0724545A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pipe
- cylindrical portion
- magnets
- edges
- spacers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000007788 liquid Substances 0.000 title claims description 8
- 125000006850 spacer group Chemical group 0.000 claims abstract description 34
- 230000005291 magnetic effect Effects 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 12
- 230000004323 axial length Effects 0.000 claims description 6
- 239000003129 oil well Substances 0.000 abstract description 11
- 238000009434 installation Methods 0.000 description 8
- 239000000126 substance Substances 0.000 description 4
- 239000012188 paraffin wax Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000035508 accumulation Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000002889 diamagnetic material Substances 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000008233 hard water Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/481—Treatment of water, waste water, or sewage with magnetic or electric fields using permanent magnets
- C02F1/482—Treatment of water, waste water, or sewage with magnetic or electric fields using permanent magnets located on the outer wall of the treatment device, i.e. not in contact with the liquid to be treated, e.g. detachable
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
Definitions
- This invention relates generally to apparatus for magnetically treating a liquid flowing through a pipe, and pertains more particularly to unpotted apparatus that can be readily held in place against the exterior of the tubing string installed in an oil well casing pipe.
- tubing string is removed from the oil well at great expense and cleaned out after its removal from the oil well. Attempts to treat the flow through the tubing string to prevent incrustation have not proven successful.
- the spacing between the tubing string and the oil well casing pipe is very restrictive and does not allow use of magnetic units which are conventionally utilized for exposed pipes.
- the tubing string is typically formed of Schedule 80 carbon steel and is tested for 3,000 psi (210 kg/sq. cm) and 175,000 pounds (65,000 kg) of tensile strength, and therefore transmission of magnetic flux through the tubing string is relatively difficult.
- first and second, radially separable portions of a magnetic apparatus are clamped on a pipe and then secured together with sufficient force to secure the magnetic apparatus to the pipe generally by frictional forces between the magnetic apparatus and the pipe and without attachment of the magnetic apparatus to the pipe.
- the pipe with the magnetic apparatus so secured thereon is inserted within a casing pipe of a diametric size larger than the pipe and the magnetic apparatus secured thereon.
- Figure 1 shows an elevational view of a magnetic apparatus secured to a pup joint pipe of a well pipe tubing string installed in an oil well casing pipe according to the preferred teachings of the present invention, with portions exploded therefrom.
- Figure 2 shows a horizontal sectional view of the apparatus of Figure 1 according to section line 2-2 of Figure 1.
- Figure 3 shows a vertical sectional view of the apparatus ' of Figure 1 according to section line 3-3 of Figure 2.
- Pipe 10 may be formed of carbon steel and specifically in the most preferred form is a pup joint certified by the American Petroleum Institute for installation in an oil well casing pipe 12, pipe 10 having been hatched for metal. Also, pipe 10, in practice, may vary considerably in diameter depending upon the diameter of casing pipe 12. The manner in which various pipe diameters are accommodated will become clear as the description progresses.
- Apparatus 14 includes' a housing 16 including a cylindrical portion 18 and first and second frustoconical portions 20 located on opposite axial sides of and partially closing cylindrical portion 18.
- cylindrical portion 18 has inside and outside surfaces having circular cross sections of diameters slightly larger than the diameter of the circular cross section of the outer surface of pipe 10.
- the inside surface of portion 18 has a diameter in the order of 1 inch (2.54 cm) larger than the outer surface of pipe 10.
- Portion 18 has an elongated length in the order of 7-9 inches (18-23 cm).
- Portions 20 each includes a major base having inside and outside surfaces having circular cross sections of diameters equal to and interconnected to the diameters of the inside and outside surfaces of an axial end of portion 18. Portions 20 each include a minor base having an inside surface having a circular cross section of a diameter generally equal and corresponding to the outer surface of pipe 10.
- housing 16 is divided into first and second longitudinal portions 16a and 16b which are radially separable from each other and pipe 10, with portions 16a and 16b being halves in the most preferred form which are mirror images of each other and preferably are of identical construction.
- Housing 16 further includes a plurality of parallel spacers 22 for holding cylindrical portion 18 generally concentric to pipe 10.
- spacers 22 are elongated angle irons including a first leg 24 secured to the inside surface of cylindrical portion 18 at circumferentially spaced locations such as by welding and a second leg 26 extending perpendicularly from leg 24 and having a free edge for abutting with pipe 10.
- the free edges of spacers 22 terminate in a cylinder having a diameter generally equal to the diameter of the outer surface of pipe 10.
- Spacers 22 have an axial length generally equal to and coextensive with the axial length of cylindrical portion 18. Spacers 22 are circumferentially spaced around pipe 10 and extend generally parallel to the axis of pipe 10 and of cylindrical portion 18.
- each housing half 16a and 16b includes first and second edge spacers 22 located adjacent to the longitudinal edges thereof, with the free edges of legs 24 being located circumferentially outward of legs 26. Furthermore, each housing half 16a and 16b further includes at least one intermediate spacer 22 located intermediate the first and second edge spacers 22 and the longitudinal edges of halves 16a and 16b. The number of intermediate spacers 22 depends upon the diameter of pipe 10 and cylindrical portion 18, with three spacers 22 shown in the drawings for each housing half 16a and 16b for pipe 10 having a diameter of 2-5/8 inches (6-2/3 cm).
- Apparatus 14 further includes a first series of permanent magnets 28 located at equally spaced circumferential intervals intermediate pipe 10 and cylindrical portion 18 with magnets 28 being arranged having their south poles located radially inwardly and adjacent pipe 10 and having their north poles located radially outwardly and adjacent cylindrical portion 18.
- Apparatus 14 further includes a second series of permanent magnets 30 located at equally spaced circumferential intervals intermediate pipe 10 and cylindrical portion 18 with magnets 30 being arranged having their north poles located radially inwardly and adjacent pipe 10 and having their south poles located radially outwardly and adjacent cylindrical portion 18.
- Magnets 30 are longitudinally spaced along pipe 10 and cylindrical portion 18 from magnets 28. The number and longitudinal positioning of magnets 30 correspond to the number and longitudinal position of magnets 28.
- magnets 28 and 30 in each series depends upon the diameter of pipe 10 and cylindrical portion 18, with two magnets 28 and 30 shown in the drawings for each half 16a and 16b positioned inter ⁇ mediate the edge spacers 22 and the intermediate spacer 22 for pipe 10 having a diameter of 2-5/8 inches (6-2/3 cm).
- Magnets 28 and 30 in the preferred form are formed of neodymium material in the shape of a right parallelepiped having a height of 3/4 inch (1.9 cm) along the longitudinal direction, i.e. the distance between the top and bottom edges of magnets 28 and 30, a width of 1/2 inch (1.27 cm) along a radial direction, i.e.
- magnets 28 and 30 are generally equal to but larger than the width and that the width is substantially greater and
- housing halves 16a and 16b including spacers 22 can be fabricated for the particular diameter of pipe 10 to be utilized.
- housing halves 16a and 16b can be positioned on pipe
- a clamping band 32 can be positioned around cylindrical portion 18 of housing 16 and tightened to tightly clamp housing halves 16a and 16b
- housing halves 16a and 16b can be secured together such as by welding 34 the longitudinal free edges of halves 16a and 16b together.
- plates can be welded to each frustoconical portion 20 overlapping the longitudinal free edges thereof, with the plates not exceeding the diameter of cylindrical portion 18. It can then be appreciated that magnets 28 and 30 are tightly sandwiched between the inside surface of cylindrical portion 18 and the outer surface of pipe 10. Further, it can be appreciated that frustoconical portions 20 close the spacing between the inside surface of cylindrical portion 18 and the outer surface of pipe 10 on the opposite axial ends of cylindrical portion 18.
- apparatus 14 is not in any way welded or otherwise secured to pipe 10 in a manner which would affect the physical characteristics thereof and specifically which would affect the certification of pipe 10.
- apparatus 14 is very rigidly secured to pipe 10 according to the preferred teachings of the present invention. Specifically, removal of apparatus 14 in a radial direction is prevented due to the securement of halves 16a and 16b together and concentrically around pipe 10. Sliding of apparatus 14 in a longitudinal direction is prevented due to the abutment and clamping of the minor base of portions 20 and of the free edges of legs 26 of spacers 22 against the outer surface of pipe 10. Additionally, the sandwiching of magnets 28 and 30 between cylindrical portion 18 and pipe 10 also assists in the securement of apparatus 14 to pipe 10.
- a standard, previously certified pipe 10 can be purchased, with apparatus 14, according to the preferred teachings of the present invention, being added thereto without requiring pipe 10 to be retested or certified prior to installation.
- Pipes 10 with apparatus 14 secured thereto can then be transported to the oil well.
- the well pipe tubing can then be installed in casing pipe 12 in the usual manner and including pipe 10 and apparatus 14 secured thereto at approximately 1,000 feet (300 meters) intervals along the well pipe tubing. It should be appreciated that due to the very tight manner that apparatus 14 grips pipe 10 and the reinforcement provided to apparatus 14 by spacers 22, apparatus 14 is able to withstand the rigors of installation in casing pipe 12 without dislodgment from or along pipe 10.
- apparatus 14 After installation of the well pipe tubing including apparatus 14 at axial spaced intervals, apparatus 14 magnetically treats the flow through the well pipe tubing to prevent and/or eliminate incrustation inside of the well pipe tubing and thus saving maintenance costs and maximizing flow through the well pipe tubing and thus the production from the oil well.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14063793A | 1993-10-20 | 1993-10-20 | |
US140637 | 1993-10-20 | ||
PCT/US1994/012014 WO1995011198A1 (en) | 1993-10-20 | 1994-10-20 | Apparatus for magnetically treating flowing liquids |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0724545A1 true EP0724545A1 (en) | 1996-08-07 |
Family
ID=22492146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94931419A Withdrawn EP0724545A1 (en) | 1993-10-20 | 1994-10-20 | Apparatus for magnetically treating flowing liquids |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0724545A1 (en) |
AU (1) | AU8050994A (en) |
BR (1) | BR9407881A (en) |
CA (1) | CA2174724A1 (en) |
WO (1) | WO1995011198A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2143885B1 (en) * | 1995-12-21 | 2001-01-01 | Univ Catalunya Politecnica | MAGNETIC DEVICE THAT MODIFIES AND REDUCES THE PRECIPIATATION OF SALTS IN FLUID CONDITIONS. |
US6068768A (en) * | 1998-04-13 | 2000-05-30 | Carpenter; Roland K. | Apparatus for magnetically treating flowing liquids |
RU2662491C1 (en) * | 2017-07-26 | 2018-07-26 | Общество с ограниченной ответственностью "ЛУКОЙЛ-Инжиниринг" (ООО "ЛУКОЙЛ-Инжиниринг") | Method of prevention of deposits of asphalt-resin-parafin substances in the well with the downhole pump method of recovering of formation fluid by its magnetization |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4605498A (en) * | 1984-04-06 | 1986-08-12 | Kulish Peter A | Apparatus for magnetic treatment of liquids |
DE3806708A1 (en) * | 1987-12-09 | 1989-06-22 | Schubert Christoph Dipl Ing Fh | LIME CONVERSION PLANT FOR WATER PRESSURE PIPELINE SYSTEMS FOR HOUSEHOLD AND INDUSTRY |
US5024271A (en) * | 1989-01-09 | 1991-06-18 | Baotou Institute Of Applied Design Of New Materials | Permanent-magnet wax-proof device |
EP0462103A4 (en) * | 1989-03-07 | 1992-07-15 | Zimmerman, Patricia W. | An improved magnetic-field amplifier |
US5052491A (en) * | 1989-12-22 | 1991-10-01 | Mecca Incorporated Of Wyoming | Oil tool and method for controlling paraffin deposits in oil flow lines and downhole strings |
DE9116358U1 (en) * | 1991-09-26 | 1992-08-20 | Straub, Jürgen, 7410 Reutlingen | Device for the magnetic treatment of liquids, inorganic and organic mixtures or solutions |
FR2702762B1 (en) * | 1993-03-17 | 1995-05-19 | Gilles Thoraval | Anti-scale magnetic device. |
DE9400751U1 (en) * | 1994-01-18 | 1994-03-10 | Heck, Ernst, 55234 Bechtolsheim | Permanent magnetic limescale converter |
-
1994
- 1994-10-20 BR BR9407881A patent/BR9407881A/en not_active IP Right Cessation
- 1994-10-20 WO PCT/US1994/012014 patent/WO1995011198A1/en not_active Application Discontinuation
- 1994-10-20 CA CA 2174724 patent/CA2174724A1/en not_active Abandoned
- 1994-10-20 EP EP94931419A patent/EP0724545A1/en not_active Withdrawn
- 1994-10-20 AU AU80509/94A patent/AU8050994A/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO9511198A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1995011198A1 (en) | 1995-04-27 |
CA2174724A1 (en) | 1995-04-27 |
AU8050994A (en) | 1995-05-08 |
BR9407881A (en) | 1996-10-29 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 19960520 |
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AK | Designated contracting states |
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17Q | First examination report despatched |
Effective date: 19980522 |
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GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
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GRAG | Despatch of communication of intention to grant |
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GRAG | Despatch of communication of intention to grant |
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GRAH | Despatch of communication of intention to grant a patent |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20000906 |