US3378089A - Combined junk basket - Google Patents

Combined junk basket Download PDF

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Publication number
US3378089A
US3378089A US540013A US54001366A US3378089A US 3378089 A US3378089 A US 3378089A US 540013 A US540013 A US 540013A US 54001366 A US54001366 A US 54001366A US 3378089 A US3378089 A US 3378089A
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Prior art keywords
magnet
neck
outside diameter
teeth
basket
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US540013A
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Kenneth R Marsh
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KENNETH R MARSH
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Kenneth R. Marsh
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    • 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
    • E21B31/00—Fishing for or freeing objects in boreholes or wells
    • E21B31/08—Fishing for or freeing objects in boreholes or wells using junk baskets or the like
    • 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
    • E21B31/00—Fishing for or freeing objects in boreholes or wells
    • E21B31/06—Fishing for or freeing objects in boreholes or wells using magnetic means

Definitions

  • This invention relates to junk baskets and, more particularly, to a device for removing both magnetic and non-magnetic debris from an oil well.
  • my invention is an improvement upon this type of a magnetic junk basket. At least partially, my invention is to provide helical holes so that the fluid is jetted out at an angle to more efficiently agitate the debris and silt and mud.
  • An object of this invention is to remove debris from an oil well.
  • FIG. 1 is an elevational, mainly sectioned, view of a tool according to this invention.
  • FIG. 2 is a sectional view taken on line 22 of FIG. 1.
  • FIG. 3 is a sectional view taken on line 33 of FIG. 1.
  • FIG. 4 is a top plan view of the lower pole plate and surrounding brass ring.
  • FIG. 5 is a detailed sectional view taken on line 5-5 of FIG. 4.
  • FIG. 6 is a perspective view of the non-magnetic basket removed from the neck of the tool.
  • the tool includes tubular body 10.
  • This tubular body has a plurality of sections which are screwed together.
  • the neck section 12 has an outside diameter on the lower portion which is equal to the outside diameter of magnet section 14.
  • the neck section has a neck portion or neck 16 which has an outside diameter considerably less than that of the magnetic section 14. Threads 18 at the top of the neck section 12 provide means for attaching the tool to a rotating string of drill stem.
  • Shoe 20 forms the lowermost section of the tubular body 10. Teeth 20 on the bottom of the shoe 20 provide means for digging up the debris at the bottom of the well as is well known in the art.
  • the outside diameter of the shoe and teeth means is the same as the outside diameter of the magnet section 14 which is cylindrical.
  • the shoe 2% is threaded to the magnet section 14.
  • Magnet 24 is held within the magnet section 14 of the tubular body 10.
  • the magnet 24 is a solid piece of permanent magnet well known to the art and more generally known by its trademark Alnico.
  • the magnet 24 fits snugly within a recess in lower pole plate 26 which is 3,378,689 Patented Apr. 16, 1968 constructed of soft iron.
  • Lower pole plate 26 has brass ring 28 surrounding and attached to it as by brazing.
  • the brass ring has an annular recess which mates with and rests upon internal shoulder or flange 30 of the extreme lower part of the magnet section 14.
  • the brass ring 28 has a plurality of holes 32 therethrough to conduct fluid from annular passageway 34 to the area of the teeth means 22.
  • the annular passageway 34 is formed between the sleeve-like magnet section 14 and the magnet 24 therein.
  • the upper portion of the magnet 24 is snugly fitted within a recess in the lower face of upper pole plate 36, which is also made of soft iron.
  • the upper pole plate 36 butts against brass disc 38 which, in turn, butts against lower face 40 of the neck section 12.
  • the neck section 12 could be described as cup-shaped inasmuch as bore 42 extends from the top of the base 44.
  • the bottom face 49 is the bottom of the base 44.
  • plurality of holes 46 are drilled from the bottom of the bore 42 at an angle through the base 44 to communicate with the annular passageway 34.
  • a sleeve 48 of nonmagnetic material such as aluminum, brass or babbitt, is telescoped over the magnet 24.
  • the sleeve 48 is shorter than the magnet.
  • the upper pole plate 36 and bottom pole plate 26 are placed upon the magnetized magnet 24 and are held in place by magnetic attraction also holding brass sleeve 48 in place.
  • the magnet assembly which includes the two pole plates 26 and 36 and the brass ring 28, are inserted into place within the magnet section 14 with the ring 28 setting upon shoulder 30.
  • the brass disc 33 is fitted over the upper pole plate 36 and the neck section 12 is threaded onto the magnet section 14.
  • the shoe 20 may be attached. It will be understood by those skilled in the art that any of a plurality of shoes 20 with different teeth configuration could be used.
  • Basket 50 for non-magnetic junk is cup-shaped. It has cylindrical side walls 52 and base 54. The base has a hole therethrough of the same diameter as the outside diameter of the neck 16. The basket is attached, as by welding, around the neck 16. The outside diameter of the basket is not greater than the outside diameter of the body 10 at the magnet section 14, which is the greatest outside diameter of the body 10.
  • the basket or cup 50 has an open top and the upper edge or lip 56 thereof is helical, spiraling upward from low point. 58 at the bottom of vertical lip 60 to high point 62 at the top of the vertical edge.
  • the tool is so constructed that it rotates to advance the vertical lip 60 as shown by arrow A. This direction of rotation is correlated with the direc' tion of rotation of the teeth means 22 as shown by arrow B.
  • the helical holes 3 point in such a direction as to jet the fluid pumped through the tool in the same direction (arrow B) as the teeth.
  • the tool is assembled upon the bottom of a string of drill stem (not shown).
  • the tool is lowered to the bottom of an oil well and rotated by the drill stem while fluid in the form of water, oil, or mud, is pumped through the drill stem and the tool.
  • the magnetic debris is attracted to the bottom pole plate 26. Non-magnetic debris is washed by the flow of fluid outward and around the outside of the tool.
  • a junk basket for an oil well comprising:
  • a junk basket for an oil well comprising:
  • said cup having an open top with (j) a helical lip and (k) a vertical axial edge.
  • the outside diameter of the cup is not greater than the outside diameter of the body.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Description

April 16, 1968 K. R. MARSH 3,378,089
COMBINED JUNK BASKET Filed April 4, 1966 2 SheetsSnee' 1 4 4 4 v INVENTOR F 26 QQE KENNETH R MARSH BY a B+ /M.'
April 16, 1968 K. R. MARSH 3,378,089
COMBINED JUNK BASKET Filed April 4, 1966 2 Sheets-Sheet 2 ii I FIG. 4
W \NVENTOR KENNETH R. MARSH B BY United States Patent "ice 3,378,089 COMBINED JUNK BASKET Kenneth R. Marsh, P.0. Box 1673, Lovington, N. Mex. 8826!) Filed Apr. 4, 1966, Ser. No. 540,013 4 Claims. (Cl. 175-308) This invention relates to junk baskets and, more particularly, to a device for removing both magnetic and non-magnetic debris from an oil well.
In recent years, magnetic fishing tools or junk baskets, such as shown in US. patents to Kirby, No. 2,668,077 and No. 2,790,116, have come into Wide use in the oil fields. In one aspect, my invention is an improvement upon this type of a magnetic junk basket. At least partially, my invention is to provide helical holes so that the fluid is jetted out at an angle to more efficiently agitate the debris and silt and mud.
Also, in recent years, more non-magnetic material has been used in the drilling of oil wells. For example, diamond bits and tungsten carbide buttons are in common use. It is desirable that debris of this nature be removed from the well; however, the magnetic fishing tools or magnetic junk baskets are not adapted for this purpose. Therefore, in another aspect of my invention, I have pro vided a combined tool in the form of improved nonmagnetic basket for this purpose.
An object of this invention is to remove debris from an oil well.
stall, and operate.
The specific nature of the invention, as well as other objects, uses, and advantages thereof, will clearly appear from the following description and from the accompanying drawing, the different views of which are not necessarily to the same scale, in which:
.FIG. 1 is an elevational, mainly sectioned, view of a tool according to this invention.
FIG. 2 is a sectional view taken on line 22 of FIG. 1.
FIG. 3 is a sectional view taken on line 33 of FIG. 1.
FIG. 4 is a top plan view of the lower pole plate and surrounding brass ring.
FIG. 5 is a detailed sectional view taken on line 5-5 of FIG. 4.
FIG. 6 is a perspective view of the non-magnetic basket removed from the neck of the tool.
Referring more particularly to the drawing, it may be seen that the tool includes tubular body 10. This tubular body has a plurality of sections which are screwed together.
v The neck section 12 has an outside diameter on the lower portion which is equal to the outside diameter of magnet section 14. The neck section has a neck portion or neck 16 which has an outside diameter considerably less than that of the magnetic section 14. Threads 18 at the top of the neck section 12 provide means for attaching the tool to a rotating string of drill stem.
Shoe 20 forms the lowermost section of the tubular body 10. Teeth 20 on the bottom of the shoe 20 provide means for digging up the debris at the bottom of the well as is well known in the art. The outside diameter of the shoe and teeth means is the same as the outside diameter of the magnet section 14 which is cylindrical. The shoe 2% is threaded to the magnet section 14.
Magnet 24 is held within the magnet section 14 of the tubular body 10. The magnet 24 is a solid piece of permanent magnet well known to the art and more generally known by its trademark Alnico. The magnet 24 fits snugly within a recess in lower pole plate 26 which is 3,378,689 Patented Apr. 16, 1968 constructed of soft iron. Lower pole plate 26 has brass ring 28 surrounding and attached to it as by brazing. The brass ring has an annular recess which mates with and rests upon internal shoulder or flange 30 of the extreme lower part of the magnet section 14. The brass ring 28 has a plurality of holes 32 therethrough to conduct fluid from annular passageway 34 to the area of the teeth means 22. The annular passageway 34 is formed between the sleeve-like magnet section 14 and the magnet 24 therein.
The upper portion of the magnet 24 is snugly fitted within a recess in the lower face of upper pole plate 36, which is also made of soft iron. The upper pole plate 36 butts against brass disc 38 which, in turn, butts against lower face 40 of the neck section 12.
The neck section 12 could be described as cup-shaped inasmuch as bore 42 extends from the top of the base 44. The bottom face 49 is the bottom of the base 44. A
plurality of holes 46 are drilled from the bottom of the bore 42 at an angle through the base 44 to communicate with the annular passageway 34.
To assemble the tool, first a sleeve 48 of nonmagnetic material, such as aluminum, brass or babbitt, is telescoped over the magnet 24. The sleeve 48 is shorter than the magnet. Next, the upper pole plate 36 and bottom pole plate 26 are placed upon the magnetized magnet 24 and are held in place by magnetic attraction also holding brass sleeve 48 in place. Thereafter, the magnet assembly, which includes the two pole plates 26 and 36 and the brass ring 28, are inserted into place within the magnet section 14 with the ring 28 setting upon shoulder 30. Then the brass disc 33 is fitted over the upper pole plate 36 and the neck section 12 is threaded onto the magnet section 14. Thereafter, the shoe 20 may be attached. It will be understood by those skilled in the art that any of a plurality of shoes 20 with different teeth configuration could be used.
When assembled, it may be seen that there is a fluid passageway from the top of the neck section 12, through the holes 46, into the annular passageway 34, through the helical holes 32, and into the area of the teeth means 22.
Basket 50 for non-magnetic junk is cup-shaped. It has cylindrical side walls 52 and base 54. The base has a hole therethrough of the same diameter as the outside diameter of the neck 16. The basket is attached, as by welding, around the neck 16. The outside diameter of the basket is not greater than the outside diameter of the body 10 at the magnet section 14, which is the greatest outside diameter of the body 10. The basket or cup 50 has an open top and the upper edge or lip 56 thereof is helical, spiraling upward from low point. 58 at the bottom of vertical lip 60 to high point 62 at the top of the vertical edge. The tool is so constructed that it rotates to advance the vertical lip 60 as shown by arrow A. This direction of rotation is correlated with the direc' tion of rotation of the teeth means 22 as shown by arrow B.
Also, it will be remembered that the helical holes 3 point in such a direction as to jet the fluid pumped through the tool in the same direction (arrow B) as the teeth.
In operation, the tool is assembled upon the bottom of a string of drill stem (not shown). The tool is lowered to the bottom of an oil well and rotated by the drill stem while fluid in the form of water, oil, or mud, is pumped through the drill stem and the tool. The fluid jetting from the holes 32, together with the teeth means 22, agitate and dislodge the debris in the bottom of the well. The magnetic debris is attracted to the bottom pole plate 26. Non-magnetic debris is washed by the flow of fluid outward and around the outside of the tool.
As the flow of fluid rises to above the basket 50 upon the neck section 12, its velocity will decrease. This is because the cross sectional area of the annular passageway between the neck 16 and the bore of the well (not shown) is greater than the cross sectional area of the annular passageway between the magnet section 14 and the bore of the well. This increase in cross sectional area results in a decrease of the velocity of the fluid. With a decrease in velocity of fluid, the heavier, non-magnetic debris (such as diamonds and carbide tips) tend to fall within the basket 50. The collection of the debris within the basket 50 is aided by the vertical edge 60 as the tool is rotated.
Thus, it may be seen that I have provided a superior tool for removing both magnetic and non-magnetic debris from an oil well.
It will be apparent that the embodiment shown is only exemplary and that various modifications can be made in operation, construction, materials, and arrangement within the scope of the invention as defined in the appended claims.
I claim as my invention:
' 1. A junk basket for an oil well comprising:
(a) a tubular body,
(b) a permanent magnet within the tubular body (c) spaced from the walls of the body to provide fluid passageways between the walls of the body and the magnet,
(d) thread means at the top of the body for attaching it to a rotating string of drill stem,
(e) slanted teeth means on the bottom of the body for digging up debris at the bottom of the well,
(f) a plurality of holes from the passageway between the magnet and walls to the teeth means,
(g) said holes being slanted in the same direction as the teeth means,
(h) the neck of the body above the magnet having an outside diameter less than the outside diameter at the magnet and the teeth, and
(j) a cup surrounding the neck of the body,
(k) said cup having an open top.
2. The invention as defined in claim 1 wherein the open top of the cup has (In) a helical lip with (n) a vertical axial edge.
3. A junk basket for an oil well comprising:
(a) a tubular'body,
(b) a permanent magnet within the tubular body (c) spaced from the walls of the body to provide fluid passageways between the walls of the body and the magnet,
(d) thread means at the top of the body for attaching it to a rotating string of drill stern,
(e) teeth means on the bottom of the body for diggin up debris at the bottom of the well,
(f) the neck of the body above the magnet having an outside diameter less than the outside diameter at the magnet and the teeth, and
(g) a cup surrounding the neck of the body,
(h) said cup having an open top with (j) a helical lip and (k) a vertical axial edge.
4. The invention as defined in claim 3 wherein (111) said vertical edge is pointed the same direction as said teeth means, and
(n) the outside diameter of the cup is not greater than the outside diameter of the body.
References Cited UNITED STATES PATENTS 2,670,800 3/1954 Stohn 166-99 2,723,836 12/1956 Fraser -403 2,729,494 1/1956 Trowbn'dge 29465.5 2,734,767 2/1956 Donham 166-65 2,790,116 4/1957 Kirby 294-655 2,830,663 4/1958 Kirby 166-65 2,830,664 4/1958 Kirby -2 166-65 2,891,621 6/ 1959 Walton et a1. 166-65 2,918,323 12/1959 Cofiee 294-655 JAMES A. LEPPINK, Primary Examiner.

Claims (1)

1. A JUNK BASKET FOR AN OIL WELL COMPRISING: (A) A TUBULAR BODY, (B) A PERMANENT MAGNET WITHIN THE TUBULAR BODY (C) SPACED FROM THE WALLS OF THE BODY TO PROVIDE FLUID PASSAGEWAYS BETWEEN THE WALLS OF THE BODY AND THE MAGNET, (D) THREAD MEANS AT THE TOP OF THE BODY FOR ATTACHING IT TO A ROTATING STRING OF DRILL STEM, (E) SLANTED TEETH MEANS ON THE BOTTOM OF THE BODY FOR DIGGING UP DEBRIS AT THE BOTTOM OF THE WELL, (F) A PLURALITY OF HOLES FROM THE PASSAGEWAY BETWEEN THE MAGNET AND WALLS TO THE TEETH MEANS, (G) SAID HOLES BEING SLANTED IN THE SAME DIRECTION AS THE TEETH MEANS, (H) THE NECK OF THE BODY ABOVE THE MAGNET HAVING AN OUTSIDE DIAMETER LESS THAN THE OUTSIDE DIAMETER AT THE MAGNET AND THE TEETH, AND (J) A CUP SURROUNDING THE NECK OF THE BODY, (K) SAID CUP HAVING AN OPEN TOP.
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3520359A (en) * 1968-06-27 1970-07-14 Herman T Ehrlich Magnetic junk basket
US5224548A (en) * 1991-12-26 1993-07-06 Dankovich Ii Kalman E Apparatus and method for retrieving lost materials in slanted boreholes
US7357183B2 (en) 2005-09-09 2008-04-15 Venturi Oil Tools Magnetic fishing tool and method
US20120261114A1 (en) * 2011-04-14 2012-10-18 Lee Oilfield Service Ltd. Downhole magnet tool and method of assembly
US20150300118A1 (en) * 2012-11-20 2015-10-22 Interwell Technology As Junk catching device
US20180266201A1 (en) * 2017-03-20 2018-09-20 Klx Energy Services Llc Venturi jet basket assembly for use in a wellbore and methods for use
US10081995B2 (en) * 2013-07-24 2018-09-25 Interwell Technology As Well tool comprising a plugging device and a junk catching device

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2670800A (en) * 1950-04-27 1954-03-02 Kendall R Stohn Junk basket well tool
US2723836A (en) * 1954-09-24 1955-11-15 Bit Guides Inc Core bit protector
US2729494A (en) * 1950-09-28 1956-01-03 Kingston Instr Company Ltd Magnetic retrieving tool
US2734767A (en) * 1956-02-14 Magnetic junk catcher
US2790116A (en) * 1956-11-21 1957-04-23 Ii John H Kirby Magnetic fishing tool and method of manufacture
US2830663A (en) * 1953-11-02 1958-04-15 John H Kirby Permanent magnet fishing tool
US2830664A (en) * 1957-02-25 1958-04-15 Ii John H Kirby Permanent magnet fishing tool
US2891621A (en) * 1954-03-09 1959-06-23 Ideco Inc Retrieving tool for well bores
US2918323A (en) * 1958-05-26 1959-12-22 Charles W Coffee Magnetic fishing tool

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734767A (en) * 1956-02-14 Magnetic junk catcher
US2670800A (en) * 1950-04-27 1954-03-02 Kendall R Stohn Junk basket well tool
US2729494A (en) * 1950-09-28 1956-01-03 Kingston Instr Company Ltd Magnetic retrieving tool
US2830663A (en) * 1953-11-02 1958-04-15 John H Kirby Permanent magnet fishing tool
US2891621A (en) * 1954-03-09 1959-06-23 Ideco Inc Retrieving tool for well bores
US2723836A (en) * 1954-09-24 1955-11-15 Bit Guides Inc Core bit protector
US2790116A (en) * 1956-11-21 1957-04-23 Ii John H Kirby Magnetic fishing tool and method of manufacture
US2830664A (en) * 1957-02-25 1958-04-15 Ii John H Kirby Permanent magnet fishing tool
US2918323A (en) * 1958-05-26 1959-12-22 Charles W Coffee Magnetic fishing tool

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3520359A (en) * 1968-06-27 1970-07-14 Herman T Ehrlich Magnetic junk basket
US5224548A (en) * 1991-12-26 1993-07-06 Dankovich Ii Kalman E Apparatus and method for retrieving lost materials in slanted boreholes
US7357183B2 (en) 2005-09-09 2008-04-15 Venturi Oil Tools Magnetic fishing tool and method
US20120261114A1 (en) * 2011-04-14 2012-10-18 Lee Oilfield Service Ltd. Downhole magnet tool and method of assembly
US8689889B2 (en) * 2011-04-14 2014-04-08 Lee Oilfield Service Ltd. Downhole magnet tool and method of assembly
US20150300118A1 (en) * 2012-11-20 2015-10-22 Interwell Technology As Junk catching device
US9784060B2 (en) * 2012-11-20 2017-10-10 Interwell Technology As Junk catching device
US10081995B2 (en) * 2013-07-24 2018-09-25 Interwell Technology As Well tool comprising a plugging device and a junk catching device
US20180266201A1 (en) * 2017-03-20 2018-09-20 Klx Energy Services Llc Venturi jet basket assembly for use in a wellbore and methods for use

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