US3750440A - Tubing swage utilizing explosives - Google Patents

Tubing swage utilizing explosives Download PDF

Info

Publication number
US3750440A
US3750440A US00217114A US3750440DA US3750440A US 3750440 A US3750440 A US 3750440A US 00217114 A US00217114 A US 00217114A US 3750440D A US3750440D A US 3750440DA US 3750440 A US3750440 A US 3750440A
Authority
US
United States
Prior art keywords
tubing
explosives
flared end
swaging
ring
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
Application number
US00217114A
Other languages
English (en)
Inventor
P Pausky
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.)
Western Atlas International Inc
Original Assignee
Dresser Industries 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 Dresser Industries Inc filed Critical Dresser Industries Inc
Application granted granted Critical
Publication of US3750440A publication Critical patent/US3750440A/en
Assigned to WESTERN ATLAS INTERNATIONAL, INC., reassignment WESTERN ATLAS INTERNATIONAL, INC., ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: DRESSER INDUSTRIES, INC., A CORP. OF DE
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/06—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure by shock waves
    • B21D26/08—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure by shock waves generated by explosives, e.g. chemical explosives
    • 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
    • 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
    • E21B29/02—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 by explosives or by thermal or chemical means

Definitions

  • a rin of ex losive material is laced in an inwardl 52 us.
  • After the explosive material exits from the flared [51] Int. Cl ..B2ld 26/08 endofth t d, d dt [58] Field of Search 29/421 B; 72/56; u Oz/21.8 166/55 63 substantially surrounding the flared end of the tublng.
  • the ring of explosive material IS detonated, causing the [561 iiizz cz'zrfigirzzsz ziQatar:2222321232: UNITED STATES PATENTS sponding to the desired internal configuration of the 2,745,345 5/ 1956 Sweetman 29/421 E end of the tubing may be positioned within the tubing 2,961,357 11/1960 Eal'nhardt ct 72/56 prior to detonation of the ring of explosive material. 3,018,730 l/l962 Caste!
  • the present invention relates to a system for swaging a deformed end of a tubing and more particularly to a swaging system for reforming theflared end of an oil well tubing.
  • Serious problems may be encounteed when the end of an oil well tubing becomes deformed. It may be impossible to perform oil well operations in the well below the tubing because the deformed end of the tubing prevents the passage of equipment into the lower portions of the well. In addition, the deformed end of the tubing may make it difficult or impossible to remove the tubing from the well. For example, if the tubing extends through a packer, the flared end of the tubing may damage the polished sealing surfaces of the packer.
  • the present invention is to the best of applicant's knowledge the first system for swaging the deformed end of an oilwell tubing. Swages in general are known in the art of metal working and may be described simply as a tool used by workers in metals for shaping their work by holding it on the work or the work on it and striking the work with a hammer.
  • the present invention provides a system for swaging and thereby changing the shape of a deformed end of a tubing.
  • a quantity of explosives is moved through the tubing and placed proximate the surface of the deformed endof the tubing.
  • the quantity of explosives is detonated, thereby changing the shape of the deformed end of the tubing to a desired configuration.
  • an anvil is moved through the tubing and positioned proximate the surface of the deformed end of the tubing opoosite the quantity of explosives prior to detonation to insure that the change of shape of the end portion of the tubing achieves the desired configuration.
  • FIG. 1 shows an embodiment of a tubing swage constructed in accordance with the present invention being transported through a tubing.
  • FIG. 2 is a sectional view taken laterally and looking downward through the explosive material of the tubing swage.
  • FIG. 3 shows the tubing swage in the open position below the deformed end of the tubing.
  • FIG. 4 shows the tubing swage positioned proximate the deformed end of the tubing.
  • FIG. I a system for swaging a deformed end of a tubing 1 is illustrated.
  • the system includes a wireline swaging tool 2 that is adapted to be transported through the tubing 1.
  • a ring of explosive material 3 carried by the swaging tool 2 is opened up automatically or upon command from the surface.
  • the swaging tool 2 is then retracted to a point where the ring of explosives 3 encompasses the deformed end (not shown) of the tubing 1.
  • the ring of explosives 3 is held in a collapsed position by a sliding sleeve 4 as the swaging tool 2 is being transported through the tubing 1.
  • the sliding sleeve 4 also holds four shear springs 5, 5', etc. in a bent position.
  • a compression spring 6 is positioned within the sliding sleeve 4 and compressed between the upper lip 7 of the sliding sleeve 4 and swaging mandrel 8.
  • the sliding sleeve 4 is prevented from moving upward by an electric squib 9 that contacts the upper lip 7 of the sliding sleeve 4.
  • the electric squib 9 holds the compression spring 6 in a compressed condition thereby retaining the sliding sleeve 4 in the lower position.
  • the electric squib 9 is attached to the upper housing 10 of the swaging instrument 2 and is electrically connected to the surface equipment (not shown) by an electrical lead I l.
  • the electric squib 9 is also grounded to the upper housing 10 by an electric lead 12 and a screw 13.
  • a spring basket 14 including a plurality of individual spring elements is positioned between the ring of explosives 3 and bull plug 15.
  • a blasting cap 16 is positioned proximate the ring of explosives 3 and is electrically connected to the surface equipment by an electrical lead 17 that extends through a hollow tube 18 into the upper housing 10. The blasting cap 16 is also grounded to the swaging instrument 2 by an electrical lead 19 and a screw 20.
  • FIG. 2 is a sectional view of the ring of explosives 3 as viewed from above.
  • the sliding sleeve 4 serves to hold the ring of explosives 3 in a folded position thereby forming a series of loops.
  • the ends of the spring basket 14 are shown connected to the folded portion of each of the loops.
  • a flexible steeel band 21 is positioned on the inner side of the ring of explosives 3.
  • the particular explosive chosen for the preferred embodiment of the present invention is a ring of DuPont Detasheet.
  • the swaging instrument 2 is shown after it has been transported through the tubing 1 and has passed through the deformed end 22 of the tubing 1.
  • the deformed end 22 of the tubing 1 has been flared by the action ofajet type easing cutter when the tubing 1 was severed.
  • the deformed end 22 of the tubing 1 must be reformed to facilitate withdrawal of the tubing 1 through well devices located in the well above the deformed end 22 of the tubing 1.
  • the ring of explosive material 3 has been moved to its extended position by the force of the spring basket 14.
  • the electric squib 9 was fired electrically by applying a negative polarity voltage from the equipment at the surface.
  • the swaging instrument 2 is shown after it has been moved upward to a position wherein the ring of explosives 3 surrounds the deformed end 22 of the tubing 1.
  • the shear springs 5, 5' etc. are in their extended position and are in contact with the deformed end 22 of the tubing 1.
  • the spring basket 14 holds the ring of explosives 3 in an open position substantially concentric with the tubing and surrounding deformed end 22 of the tubing 1.
  • the mandrel 8 and sliding sleeve 4 of the swaging instrument 2 are positioned within the deformed end 22 of the tubing 1.
  • the swaging instrument 2 is now ready for firing.
  • a voltage of positive polarity is applied to the electric blasting cap 16.
  • the detonation of blasting cap 16 sets off the explosive material in the ring of explosives 3 that encompasses the deformed end 22 of the tubing 1.
  • the explosive force is transmitted through the steel band 21, thereby causing the deformed end 22 of the tubing 1 to be swaged inwardly. Excessive swaging of tubing 1 to a configuration that would not allow workover instruments to pass through the tubing is prevented by the backup steel mandrel 8 and the sliding sleeve 4.
  • the hollow tube 18 is constructed of a relatively weak material in this embodiment aluminum, thereby providing a breakaway joint.
  • the upper housing can be drawn upward until the hollow aluminum tube 18 is severed, separating it from the lower portion of the swaging instrument 2. If the sliding sleeve 4, mandrel 8 or bull plug remain lodged in the tubing 1, the upper housing 10 can be used as a well jar to dislodge the obstruction. The housing 10 may be repeatedly raised and dropped upon the obstruction to hammer loose the obstructing elements.
  • a source of stored energy is transported through the tubing 1 until it passes through the deformed end of the tubing.
  • the collapsed ring of explosives 3 is transported through the tubing 1.
  • the source of stored energy is then positioned proximate the deformed end of the tubing.
  • the ring of explosives 3 has been moved to the extended position and placed around the outside of the deformed end 22 of the tubing 1.
  • the energy stored in the source of stored energy is then released, thereby swaging the deformed end of the tubing to a desired configuration.
  • the ring of explosives 3 is detonated by applying an electric charge to the blasting cap 16.
  • the flared end 22 of the tubing 1 is thereby swaged inwardly to the de sired configuration.
  • the anvil could be in the form of a collapsible steel ring adapted to be transported through the tubing and the source of stored energy could be in the form of a charge of explosives adapted to be positioned inside of the deformed end of the tubing. This would allow an end ofa tubing that had been deformed inwardly to be swaged outwardly to a desired configuration.
  • a swaging apparatus for reforming the flared end of an oil well tubing comprising:
  • a swaging instrument housing adapted to be transported through said oil well tubing
  • said energy storage means carried by said housing for supplying energy to reform the flared end of said tubing, said energy storage means including a band of explosives,
  • anvil means carried by said housing adapted to be positioned within said flared end of said tubing for controlling the reforming of the flared end of said tubing
  • said means carried by said housing for positioning said band of explosives proximate the external surface of the flared end of said tubing includes at least one spring attached to said band of explosives and said swaging instrument, a sliding sleeve that surrounds and contains said band of explosives, and means for selectively moving said sliding sleeve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Forging (AREA)
  • Automatic Assembly (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
US00217114A 1972-01-12 1972-01-12 Tubing swage utilizing explosives Expired - Lifetime US3750440A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21711472A 1972-01-12 1972-01-12

Publications (1)

Publication Number Publication Date
US3750440A true US3750440A (en) 1973-08-07

Family

ID=22809727

Family Applications (1)

Application Number Title Priority Date Filing Date
US00217114A Expired - Lifetime US3750440A (en) 1972-01-12 1972-01-12 Tubing swage utilizing explosives

Country Status (7)

Country Link
US (1) US3750440A (no)
AR (1) AR200250A1 (no)
CA (1) CA975275A (no)
DE (1) DE2301129A1 (no)
GB (1) GB1406499A (no)
NL (1) NL7217716A (no)
NO (1) NO138494C (no)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991010039A1 (en) * 1990-01-03 1991-07-11 Raphael Lopes Cardozo A device and a method for preventing calamities
WO2008118697A2 (en) * 2007-03-26 2008-10-02 Baker Hughes Incorporated Casing profiling and recovery system
CN104325004A (zh) * 2014-10-31 2015-02-04 西安交通大学 一种用炸药片化学能释放爆炸驱动的棒管料下料装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2741316A (en) * 1952-01-23 1956-04-10 Johnston Testers Inc Locating device for perforating guns
US2745345A (en) * 1948-09-18 1956-05-15 William G Sweetman Apparatus for releasing threaded pipe couplings
US2961357A (en) * 1958-03-20 1960-11-22 Du Pont Method for preparing bushings
US3018730A (en) * 1953-07-29 1962-01-30 Pgac Dev Company Perforating guns
US3231021A (en) * 1963-06-17 1966-01-25 Jr Haskell M Greene Formation of closures in well bores

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2745345A (en) * 1948-09-18 1956-05-15 William G Sweetman Apparatus for releasing threaded pipe couplings
US2741316A (en) * 1952-01-23 1956-04-10 Johnston Testers Inc Locating device for perforating guns
US3018730A (en) * 1953-07-29 1962-01-30 Pgac Dev Company Perforating guns
US2961357A (en) * 1958-03-20 1960-11-22 Du Pont Method for preparing bushings
US3231021A (en) * 1963-06-17 1966-01-25 Jr Haskell M Greene Formation of closures in well bores

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991010039A1 (en) * 1990-01-03 1991-07-11 Raphael Lopes Cardozo A device and a method for preventing calamities
WO2008118697A2 (en) * 2007-03-26 2008-10-02 Baker Hughes Incorporated Casing profiling and recovery system
WO2008118697A3 (en) * 2007-03-26 2008-11-20 Baker Hughes Inc Casing profiling and recovery system
CN104325004A (zh) * 2014-10-31 2015-02-04 西安交通大学 一种用炸药片化学能释放爆炸驱动的棒管料下料装置
CN104325004B (zh) * 2014-10-31 2016-04-13 西安交通大学 一种用炸药片化学能释放爆炸驱动的棒管料下料装置

Also Published As

Publication number Publication date
NO138494C (no) 1978-09-13
GB1406499A (en) 1975-09-17
DE2301129A1 (de) 1973-07-19
AR200250A1 (es) 1974-10-31
NL7217716A (no) 1973-07-16
CA975275A (en) 1975-09-30
NO138494B (no) 1978-06-05

Similar Documents

Publication Publication Date Title
US3162245A (en) Apparatus for lining casing
US3712376A (en) Conduit liner for wellbore and method and apparatus for setting same
US2201290A (en) Method and means for perforating well casings
EP2619411B1 (en) Wellbore tubular cutter
US3167122A (en) Method and apparatus for repairing casing
US5992523A (en) Latch and release perforating gun connector and method
US2373006A (en) Means for operating well apparatus
CN101529197B (zh) 用于电子时间延迟的方法和装置以及包括它们的系统
US2734456A (en) sweetman
US2745345A (en) Apparatus for releasing threaded pipe couplings
US5429192A (en) Method and apparatus for anchoring a perforating gun to a casing in a wellbore including a primary and a secondary anchor release mechanism
US3366179A (en) Well tool having safety means to prevent premature firing
JPS5851118B2 (ja) 導管切断方法及び装置
EP0319321A1 (en) Firing head for a tubing-conveyed perforating gun and method of perforating
US10597987B2 (en) System and method for perforating a formation
US11332993B2 (en) Cutting tool
US2978028A (en) Well packer setting device
US3073388A (en) Wire line cutter
US3750440A (en) Tubing swage utilizing explosives
US3036522A (en) Wire line cutter
US3255822A (en) Actuator device
US20060108125A1 (en) Anchor and method of using same
WO2020139459A2 (en) Expanding sleeve for isolation
US3199287A (en) Explosive means for tubing perforator and the like
US2928658A (en) Sidewall sampler

Legal Events

Date Code Title Description
AS Assignment

Owner name: WESTERN ATLAS INTERNATIONAL, INC.,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:DRESSER INDUSTRIES, INC., A CORP. OF DE;REEL/FRAME:004725/0094

Effective date: 19870430