GB916579A - Milling apparatus for removing objects from well bores - Google Patents

Milling apparatus for removing objects from well bores

Info

Publication number
GB916579A
GB916579A GB488760A GB488760A GB916579A GB 916579 A GB916579 A GB 916579A GB 488760 A GB488760 A GB 488760A GB 488760 A GB488760 A GB 488760A GB 916579 A GB916579 A GB 916579A
Authority
GB
United Kingdom
Prior art keywords
mandrel
packer
milling
bore
shank
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.)
Expired
Application number
GB488760A
Inventor
Julian Dmitri Keithahn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Baker Hughes Oilfield Operations LLC
Original Assignee
Baker Oil Tools Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Baker Oil Tools Inc filed Critical Baker Oil Tools Inc
Priority to GB488760A priority Critical patent/GB916579A/en
Publication of GB916579A publication Critical patent/GB916579A/en
Expired legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B31/00Fishing for or freeing objects in boreholes or wells
    • E21B31/12Grappling tools, e.g. tongs or grabs
    • E21B31/20Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23CMILLING
    • B23C3/00Milling particular work; Special milling operations; Machines therefor
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B29/00Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B31/00Fishing for or freeing objects in boreholes or wells
    • E21B31/12Grappling tools, e.g. tongs or grabs
    • E21B31/16Grappling tools, e.g. tongs or grabs combined with cutting or destroying means

Landscapes

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

Abstract

916,579. Oil wells. BAKER OIL TOOLS Inc. Feb. 11, 1960, No. 4887/60. Class 85. [Also in Group XXII] A milling-apparatus for removing objects, e.g. packers, from a well casing, comprises a washover shoe 53, having known cutting means such as tungsten carbide or diamonds held in a matrix, on a tubular shank 51 driven through clutch means 57 from a rotary string D, the shoe 53 being centred by a mandrel 24 which is engaged in the centre passage 11 of the packer B. The packer shown comprises a resilient sealing body 23, upper and lower slips 18, 20, a slip-setting sleeve 17 and slip expanders 19, 22, all on a tubular mandrel 10. The milling-apparatus is designed to remove portions of the members 17, 18, 19, 23, 22, 20 adjacent to the well casing C leaving the rest of the packer within the shank 51 to be removed from the well therewith. When the milling- apparatus is run into the well, a pilot mandrel 27 enters the bore 11 of the packer and cam ends 31 of spring fingers 30, carried by a spring- pressed, axially slidable ring 33, are contacted by the upper end of the mandrel 10. This moves the ring 33 upwards, releases the ends 31 from the sub 37 rotatably screwed on the mandrel 27, and allows the fingers 30 to be cammed inwardly to pass into and through the bore 11, when they spring outwardly. The shank 51 is welded to a clutch part 55 which is slidable on the mandrel 24 and has clutch dogs 57 which, when the shank 51 is in its uppermost position relatively to the mandrel 24, engage dogs on a sub 25, the tool 53 being thus rotated. The mandrel 24 descends in the bore 11 as the packer parts are milled away, drilling fluid being pumped through the string D, ports 60 and longitudinal grooves 61 to the tool 53. The grooves 61 end in a barrier 62, further grooves 63 beyond the barrier conducting small particles from the cutting, which may otherwise tend to jam the mandrel 24 in the bore 11, to the space below the bore. When the packer has been freed by the milling, the string D is raised and removes the sub 25 from the clutch part 55, and the shank 51 and the packer within remain stationary until the spring fingers 30 contact with a shoulder 16 on the mandrel 10, the fingers being locked against the seat by the cam action of the sub 37. As shown, the shoulder 16 is the valve seat of a spring-closed flapper valve 13. Continued raising of the string should raise the milling-apparatus and the enclosed packer, but if, for some reason, the packer will not rise, the string is rotated in a direction to screw the sub 37, which is held stationary, down on the threads 38, the cam ends 31 thus being released to enable the shoulder 16 to cam them inwards to pass into the bore 11. The mandrel 24 will then rise through the stationary packer mandrel until spring-pressed segments 70 snap into a circular recess 77 in the mandrel 24 to entrain the latter with the shank 51. The milling- apparatus is thus withdrawn from the casing leaving the stuck packer. If, when the segments 70 are in the recess 77, it is desired to restart milling, downward movement of the string D cams the segments out of the recess, and the cam part 55 is free to rise on the mandrel 24 until the clutch dogs are re-engaged.
GB488760A 1960-02-11 1960-02-11 Milling apparatus for removing objects from well bores Expired GB916579A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB488760A GB916579A (en) 1960-02-11 1960-02-11 Milling apparatus for removing objects from well bores

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB488760A GB916579A (en) 1960-02-11 1960-02-11 Milling apparatus for removing objects from well bores

Publications (1)

Publication Number Publication Date
GB916579A true GB916579A (en) 1963-01-23

Family

ID=9785729

Family Applications (1)

Application Number Title Priority Date Filing Date
GB488760A Expired GB916579A (en) 1960-02-11 1960-02-11 Milling apparatus for removing objects from well bores

Country Status (1)

Country Link
GB (1) GB916579A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983002641A1 (en) * 1982-01-27 1983-08-04 Steinkamp, Manfred Oil well packer retriever
US4616721A (en) * 1984-11-27 1986-10-14 Smith International, Inc. Packer Mill
US4696502A (en) * 1985-08-19 1987-09-29 Smith International Dual string packer mill
EP0257943A2 (en) * 1986-08-21 1988-03-02 Smith International (North Sea) Limited Apparatus having a radially movable member
US8322422B2 (en) 2006-06-26 2012-12-04 Halliburton Energy Services, Inc. Method of removing a device in an annulus
CN112469882A (en) * 2018-07-25 2021-03-09 沙特阿拉伯石油公司 Milling underground pipe fitting
CN112955628A (en) * 2018-12-28 2021-06-11 哈里伯顿能源服务公司 Inclined entry guide
CN116146135A (en) * 2023-04-23 2023-05-23 中石化西南石油工程有限公司 A cover and drag for integrated device that is used for constant pressure trap plugging tool fish of well drilling

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983002641A1 (en) * 1982-01-27 1983-08-04 Steinkamp, Manfred Oil well packer retriever
EP0086582A1 (en) * 1982-01-27 1983-08-24 The Red Baron (Oil Tools Rental) Limited Oil well packer retriever
US4991649A (en) * 1982-01-27 1991-02-12 Manfred Steinkamp Oil well packer retriever
US4616721A (en) * 1984-11-27 1986-10-14 Smith International, Inc. Packer Mill
US4696502A (en) * 1985-08-19 1987-09-29 Smith International Dual string packer mill
EP0257943A3 (en) * 1986-08-21 1989-11-08 Smith International (North Sea) Limited Apparatus having a radially movable member
US4842082A (en) * 1986-08-21 1989-06-27 Smith International (North Sea) Limited Variable outside diameter tool for use in pikewells
EP0257943A2 (en) * 1986-08-21 1988-03-02 Smith International (North Sea) Limited Apparatus having a radially movable member
US8322422B2 (en) 2006-06-26 2012-12-04 Halliburton Energy Services, Inc. Method of removing a device in an annulus
CN112469882A (en) * 2018-07-25 2021-03-09 沙特阿拉伯石油公司 Milling underground pipe fitting
CN112955628A (en) * 2018-12-28 2021-06-11 哈里伯顿能源服务公司 Inclined entry guide
CN112955628B (en) * 2018-12-28 2024-02-02 哈里伯顿能源服务公司 Tilting entry guide
CN116146135A (en) * 2023-04-23 2023-05-23 中石化西南石油工程有限公司 A cover and drag for integrated device that is used for constant pressure trap plugging tool fish of well drilling

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