GB258808A - Method of and apparatus for cutting slots in oil well casing - Google Patents

Method of and apparatus for cutting slots in oil well casing

Info

Publication number
GB258808A
GB258808A GB1087726A GB1087726A GB258808A GB 258808 A GB258808 A GB 258808A GB 1087726 A GB1087726 A GB 1087726A GB 1087726 A GB1087726 A GB 1087726A GB 258808 A GB258808 A GB 258808A
Authority
GB
United Kingdom
Prior art keywords
cavity
passages
oxygen
tip
torch
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
GB1087726A
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.)
Kobe Inc
Original Assignee
Kobe 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 Kobe Inc filed Critical Kobe Inc
Priority to GB1087726A priority Critical patent/GB258808A/en
Publication of GB258808A publication Critical patent/GB258808A/en
Expired legal-status Critical Current

Links

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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/11—Perforators; Permeators
    • E21B43/114—Perforators using direct fluid action on the wall to be perforated, e.g. abrasive jets

Abstract

258,808. Marks, E. C. R., (Kobe, Inc.). April 24, 1926. Blowpipe burners.-Slots of trapezoidal section are cut in sheet metal by means of a torch comprising a head 31 and a tip 36 secured together by a nut 37. The head 31 is formed with a central cavity 32 and an annular 34, the cavity 32 being fed with oxygen or an oxidizing gas and the cavity 34 being fed with a combustible mixture of gases such as oxygen and hydrogen. The tip 36 is formed with passages 38 communicating with the cavity 32 and passages 40 communicating with the cavity 34. The gas mixture issuing from the passages 40 forms a flame for heating the sheet metal 15 to incandescence while the oxygen issuing from the passage 38 cuts a slot 21 in the metal as the torch is moved in relation to it. The passages 38 are inclined relatively to the tip axis so that the issuing oxygen jets cross one another and spread after leaving the tip. The slots cut are consequently widest where the jets emerge from the metal. The torch is of special utility in cutting slots in steel pipes or casing forming the. lining of oil wells.
GB1087726A 1926-04-24 1926-04-24 Method of and apparatus for cutting slots in oil well casing Expired GB258808A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1087726A GB258808A (en) 1926-04-24 1926-04-24 Method of and apparatus for cutting slots in oil well casing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1087726A GB258808A (en) 1926-04-24 1926-04-24 Method of and apparatus for cutting slots in oil well casing

Publications (1)

Publication Number Publication Date
GB258808A true GB258808A (en) 1926-09-30

Family

ID=9975966

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1087726A Expired GB258808A (en) 1926-04-24 1926-04-24 Method of and apparatus for cutting slots in oil well casing

Country Status (1)

Country Link
GB (1) GB258808A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2739018A (en) * 1955-01-27 1956-03-20 Bettis Rubber Company Split sleeve and method of making the same
EP0575114A1 (en) * 1992-06-16 1993-12-22 Donna K. Terrell Large head downhole chemical cutting tool
EP0575116A1 (en) * 1992-06-16 1993-12-22 Jamie B. Terrell Downhole chemical cutting tool and process
GB2381810A (en) * 2001-11-09 2003-05-14 Schlumberger Holdings Sand screen
EP1439339A1 (en) * 2003-01-14 2004-07-21 Fratelli Pettinaroli S.P.A Ball valve
EP3108090A4 (en) * 2014-02-18 2017-11-29 Well Technology AS Hydraulic cutting tool, system and method for controlled hydraulic cutting through a pipe wall in a well, and also uses of the cutting tool and the system
US9909378B2 (en) 2013-02-13 2018-03-06 Hydra Systems As Method for downhole cutting of at least one line disposed outside and along a pipe string in a well, and without simultaneously severing the pipe string
US10301904B2 (en) 2013-09-06 2019-05-28 Hydra Systems As Method for isolation of a permeable zone in a subterranean well

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2739018A (en) * 1955-01-27 1956-03-20 Bettis Rubber Company Split sleeve and method of making the same
EP0575114A1 (en) * 1992-06-16 1993-12-22 Donna K. Terrell Large head downhole chemical cutting tool
EP0575116A1 (en) * 1992-06-16 1993-12-22 Jamie B. Terrell Downhole chemical cutting tool and process
GB2381810A (en) * 2001-11-09 2003-05-14 Schlumberger Holdings Sand screen
GB2381810B (en) * 2001-11-09 2004-06-02 Schlumberger Holdings Sand screen
EP1439339A1 (en) * 2003-01-14 2004-07-21 Fratelli Pettinaroli S.P.A Ball valve
US9909378B2 (en) 2013-02-13 2018-03-06 Hydra Systems As Method for downhole cutting of at least one line disposed outside and along a pipe string in a well, and without simultaneously severing the pipe string
US10301904B2 (en) 2013-09-06 2019-05-28 Hydra Systems As Method for isolation of a permeable zone in a subterranean well
EP3108090A4 (en) * 2014-02-18 2017-11-29 Well Technology AS Hydraulic cutting tool, system and method for controlled hydraulic cutting through a pipe wall in a well, and also uses of the cutting tool and the system

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