US1777713A - Pipe cutter - Google Patents
Pipe cutter Download PDFInfo
- Publication number
- US1777713A US1777713A US246717A US24671728A US1777713A US 1777713 A US1777713 A US 1777713A US 246717 A US246717 A US 246717A US 24671728 A US24671728 A US 24671728A US 1777713 A US1777713 A US 1777713A
- Authority
- US
- United States
- Prior art keywords
- pipe
- cutter
- bars
- tool
- cutting
- 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 - Lifetime
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B29/00—Cutting 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
- E21B29/002—Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe
- E21B29/005—Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe with a radially-expansible cutter rotating inside the pipe, e.g. for cutting an annular window
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sawing (AREA)
Description
Oct. 7,- 1930. s. o. BRADEN ,7 3
PIPE CUTTER Filed Jan. 14, 1928 A TTORAf-E y Patented Oct. 7, 1 930 twin-"sun's SAMUEL o. BRADEN, or nnumnren'r, okLAnomA PIPE cu'r'rnn Application m January 14, 19a. sen ing. 246,717. r
This invention relates to pipe cutters and it is especially designed tocut pipe or tubing from the inside. There are many instances where the pipe, if out at all, must be out from 5 the inside instead of from theoutside, because when the pipe is in use, it is notfeasible or convenient to apply the cutter to the outside of the pipe. I My invention particularly coinprehends 1 the provision of means for cutting'pipe or tubing in an oil well, butin so far asthe specilic construction of my invention is concerned, I wish not to be limitedto any par ticular application of the cutter.
It frequently happens that oil-wellpipe or tubing sticks or freezes in the hole at' a considerable depth so in order to save the remaining portion of the pipe or tubing, it must be severed above the point where the freezing or sticking occurs. It is not'always 1 feasible or convenient to cut from the outside so I have provided a cutter which can be lowered into the pipe or tubing to' any depth, the cutter having expanding cutting tools which, in their collapsed form, will be within the diameter of the head or stock which carries them, but which when the cutter is lowered to the proper depth can be tions to cut the pipe from theinside and which may be retracted when the cutting is accomplished so the cutting tool may be conveniently withdrawn from the well.
In order to understand my inventionreference should be had to the accompanying drawings in which: V p
Fig. 1 is a vertical sectional View through a well containing pipe or tubing in which my invention is applied.
Fig. 2 is a vertical longitudinal sectional view through the cutting tool.
Fig. 3 is an enlarged fragmentary perspective view ofthe head, the cutter bars and the links connecting the cutter bars to the head.
Referring now to the drawings by numerals of reference, designates the oil well progressively expanded into cutting posi- Fig. 4 is a perspective view of one member and 2 the tubing therein. Within the tubingif I i 2, I may lower thecutting tool." 'It is shown as consisting of atube3 having a threaded 1 en'dt to receive a collar 5 by ine'ans of which it may be fastened to a tube suspended from the top of the well so that it may be introduced into and removed from the well. "Resting upon the end 6, of the tube 3, is a flange 7 of the depending tubulartrap 8 which may catch any solids gravitating from the top of 0 the well. The trap 8 is provided with. openings 9 through which fluid pressure may pass into the tube 8. l Fastened to the IoWerendofthetube 3 is an elongated collar 10 having a lining therein, indicated-at11. Movable longitudinally C in the lining'is apiston 12 having alstem 13projecting through the end 1 1" carried by the member 10. A coil spring 15 surrounding the piston rodor stem 13hasone endm bearing against the piston 12and the other against the blockor endl l; the expansive. force of thespringtending tonormally force 1 the piston to the upper end of the' collar or.
When it is desired to cut the pipe or tubing, the tool is lowered into the well, inside the tubing, where it will be suspended from a string of hollow rods or pipe until it reaches theproper depth. Then fluid pressure will be, introduced through the hollow rods or pipe forcing the piston 12 against the spring 15, forcing the cutter ends (which up to this time are within the guide) out through the openings 22 and 23 to contact with the pipe to be 'cut. Then the tool, through the medium of the supporting hollow string of rods or pipe, willbe turned or rotated from the top of the well to perform the cutting operation, it being understood during all this time fluid pressure is being exerted against the piston 12 to maintain the cutters in intimate contact with the pipe. When the cutting operation has been completed, fluid pressure will be relieved on the piston so that the spring can retract the cutters within the tool housing, permitting the tool to be withdrawn from the well.
From the foregoing it will be apparent that the pipe can be conveniently cut from the inside, that the tool can be introduced into a pipe having an internal diameter substantially equal to the external diameter of the tool, that the cutting can be efliciently performed and the tool can be conveniently withdrawn after the'cutting operation.
What I claim and desire to secure by Letters Patent is 1. An internal pipe cutter comprising a guiding member having intersecting arcuate guiding grooves, overlapping arcuate cutter bars in the grooves having cutting edges projectable through the guiding member and an actuating member; for simultaneously actuating the cutter bars.
2. An internal pipe cutter comprising a guiding member having intersecting arcuate guiding grooves, overlapping arcuate cutter bars in the grooves having cutting edges projectable through the guiding member, an actuating member for actuating the cutter bars to project their ends through the guiding member and means for retracting said bars within the guiding member.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US246717A US1777713A (en) | 1928-01-14 | 1928-01-14 | Pipe cutter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US246717A US1777713A (en) | 1928-01-14 | 1928-01-14 | Pipe cutter |
Publications (1)
Publication Number | Publication Date |
---|---|
US1777713A true US1777713A (en) | 1930-10-07 |
Family
ID=22931904
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US246717A Expired - Lifetime US1777713A (en) | 1928-01-14 | 1928-01-14 | Pipe cutter |
Country Status (1)
Country | Link |
---|---|
US (1) | US1777713A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2859943A (en) * | 1957-01-07 | 1958-11-11 | Chadderdon Jack | Expansible mill for well casings |
US4068711A (en) * | 1976-04-26 | 1978-01-17 | International Enterprises, Inc. | Casing cutter |
US4186810A (en) * | 1976-07-06 | 1980-02-05 | John Macdonald & Company (Pneumatic Tools) Limited | Fluid operated undercutter |
US4889197A (en) * | 1987-07-30 | 1989-12-26 | Norsk Hydro A.S. | Hydraulic operated underreamer |
US20080178721A1 (en) * | 2007-01-30 | 2008-07-31 | Shane Schwindt | Production casing ripper |
US20190145211A1 (en) * | 2017-11-16 | 2019-05-16 | Weatherford Technology Holdings, Llc | Apparatus and method for cutting casings |
-
1928
- 1928-01-14 US US246717A patent/US1777713A/en not_active Expired - Lifetime
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2859943A (en) * | 1957-01-07 | 1958-11-11 | Chadderdon Jack | Expansible mill for well casings |
US4068711A (en) * | 1976-04-26 | 1978-01-17 | International Enterprises, Inc. | Casing cutter |
US4186810A (en) * | 1976-07-06 | 1980-02-05 | John Macdonald & Company (Pneumatic Tools) Limited | Fluid operated undercutter |
US4889197A (en) * | 1987-07-30 | 1989-12-26 | Norsk Hydro A.S. | Hydraulic operated underreamer |
US20080178721A1 (en) * | 2007-01-30 | 2008-07-31 | Shane Schwindt | Production casing ripper |
US7581591B2 (en) | 2007-01-30 | 2009-09-01 | Liquid Gold Well Service, Inc. | Production casing ripper |
US20190145211A1 (en) * | 2017-11-16 | 2019-05-16 | Weatherford Technology Holdings, Llc | Apparatus and method for cutting casings |
WO2019099697A1 (en) * | 2017-11-16 | 2019-05-23 | Weatherford Technology Holdings, Llc | Apparatus and method for cutting casings |
GB2581630A (en) * | 2017-11-16 | 2020-08-26 | Weatherford Tech Holdings Llc | Apparatus and method for cutting casings |
US10808481B2 (en) * | 2017-11-16 | 2020-10-20 | Weatherford Technology Holdings, Llc | Apparatus and method for cutting casings |
GB2581630B (en) * | 2017-11-16 | 2022-05-18 | Weatherford Tech Holdings Llc | Apparatus and method for cutting casings |
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