US2565731A - Disk perforator for pipes in wells - Google Patents

Disk perforator for pipes in wells Download PDF

Info

Publication number
US2565731A
US2565731A US661939A US66193946A US2565731A US 2565731 A US2565731 A US 2565731A US 661939 A US661939 A US 661939A US 66193946 A US66193946 A US 66193946A US 2565731 A US2565731 A US 2565731A
Authority
US
United States
Prior art keywords
pipe
plunger
closure
perforator
fluid
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
US661939A
Inventor
Johnston James Luther
Original Assignee
Edgar C Johnston
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 Edgar C Johnston filed Critical Edgar C Johnston
Priority to US661939A priority Critical patent/US2565731A/en
Application granted granted Critical
Publication of US2565731A publication Critical patent/US2565731A/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/11Perforators; Permeators
    • E21B43/112Perforators with extendable perforating members, e.g. actuated by fluid means
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/1624Destructible or deformable element controlled
    • Y10T137/1632Destructible element
    • Y10T137/1692Rupture disc
    • Y10T137/1759Knife or cutter causes disc to break
    • Y10T137/1767Movable knife or cutter

Description

A 1951 J. L. JOHNSTON 2,565,731

DISK PERFORATOR FOR PIPES IN WELLS Filed April 13, 1946 FigiS JAMEs L. JOHNS TON INVENTOR BY E) ATT N EYS Patented Aug. 28, 1951 DISK PnRron 'ronFoR'mrEsm WELLS James Luther-Johnston, Longviem Tex.,..assignor n rh wE sar a ohnsmn, ne w,

Appiication*April'1;3-,' 1946, Serial No. 661g939 The invention relates to. a closure perforaton for pipe. Under various sets of conditionsrit is: often necessary toprovide a frangibleon per-.- foratable-closure in apipeso as to prevent. the: how of fluid therethrough until a predetermined time. In order. to perforate: or. break: such' a010- sure; anassernblyis-provided which can bemoved: in the pipe so as-to strike the closure, causingrit. to be broken or perforated.

After the perforation or breaking of.:ther closure, itis desirable to then remove all of suchi perforator members from the pipe so as; to per.- initfull fiowcffiuid therethroug-h, andthe. present-invention contemplates the provisionof suchan arrangement.

It isone oftherobjects of the,;invention1to. pro

vide a perforator ofclosuresinxpipewhereby both.

the closure and perforator can .be removed, from; perforating. position by the-flow: of fluidafter; the; perforation.

Another. object of, theinvention is; to; provide aperiorator for closures in pipe which;substan e.

tially. fills-the pipe. so. that.the...flow. offluid along; the pipe afterthe perforation will remove. the; plunger so as to leavethe'pipe. openfor a.fu11 flow of fluid.

Another object of the invention, is; to: teme porarily look a pipe perforator in position in. the pipe so that it can be released by the-reactionof the perforating movement to thereafter flowwith,

the fluid in the pipe.

Another object of the invention is. toprqvidev a perforator for closures in pipe which has a 5831-, ing means there-around so as to be forced along with the flow of fluid released by the perfora tions.

Other and further objects of theinvention will be readily apparent when the following descrip: tion is considered in connection .witli.the.acconi panying drawings, wherein:

Fig. 1 is a vertical sectional view illustrating the assembly in a pipe in a well wherethe'plunger' is temporarily loclred in position;

Fig. 2'shows a modified arrangement-of, the plunger just about ready for movement to per-- forate'the closure.

Fig. 3 shows still another form of the invention with the plunger adjacent theclosure andiready to perform the perforating operation.

In Fig. l. a string ofpipez is shown. Pipe of this sort isusually located in a well-bore'andmay be in the form of easing, tubing; a formation testing stringof pipe, or any other pipe which-1t is desired to maintain closed until} a predeterminedtime. Thepipeis madeupof an upper section-3: and a lower section 4. The upperzsection is provided with: the. internal passage 5:: and;

the-lower section has a passage 6 which: ishere;

shown in Fig: l assornewhat reduced in diameter-1' as: compared-with the passage. 5.

The upper end of the pipe 4 has a threaded box member! so that a shoulder 8- supports a closure: 9 which rnay be a frangible or: perforat able disc or plate of any desired-.itype; Fig. I is a section to illustrate glass or sii nilar-materiaL however, it is intended that a thin metal* discor a disc-of frangible metal'or othersuitable corn position ina y be employedi This closure is-held' in position by the pinmember lfl-onthelower end of the upper pipe-section 3 ThiS-pin'- has the reduced passage II which in turn forms a shoulder 12; This shoulder is arranged to sup port the lower end of a coil spring [4 which in turn supports a plunger I5. This plunger has the pointed lower end; l6' which is adapted to engage-the closure 9 to perforate or break-the closure;- This plunger is made up of the body [1 ofwhichthe end It is a part. The plunger 'is-"enlarged at l9 so as to form a shoulder 20'which rests on the upper end-of thespring I4;

The upper end 23 of the plunger may be forined' in any desired manner so that it=may be gripped by a fishing tool if d esiredf'butparticularly soas' to present an upper surface 24 =which is arranged to be struck by an object dropped down through the pipe 2. Fig. 2 showssuch anobject 25 in the form of a weight having" the guide springs 27 on the sides thereof.-'. It is intended of course that any pipe nippleor object may be used. The function of thisobject is to strike the plunger I5 and to cause it to move down-sharply so as to perforate or break: the closure 9'. I v V 1 It is desirablethat the plunger be temporarily locked in the pipe so that it willnotb'e movedout of striking position and to accomplish this the interior of "the pipe is formed-with an annular recess which receives the balls 3| carriedin the openings 32 in a collar 33. The balls, the recess 39', and-the" plunger lfi are'of-such relative sizes-that the'plunger will fit: snuglythroughthe 3 a weight or other object can be dropped downwardly in the pipe 2 which may or may not be filled with liquid. The usual purpose of the closure 9 is to prevent the entrance of any fluid into the pipe 2 until such time as the pipe is properly located and the closure broken.

When the object falling through the pipe strikes the upper end 24 of the plunger, the plunger will move sharply downwardly so as to rupture the closure 9. This downward movement compresses the spring 14 so that as soon as the inertia of the parts is stopped, there will be a reaction of the spring, tending to throw the plunger upwardly. The collar 33, however, remains in locked position by the balls 3|. It is intended that the reaction of the spring M will throw the plunger upwardly sufficiently to remove the point from the punctured closure. When the lunger is to be removed, a suitable fishin tool can be low-- ered into the well bore to grip the tapered head 23 so as to exert a pull thereon and to raise the plunger to bring the reduced portion 31 up to the elevation of the balls 3|. This permits the balls to move inwardly out of the recess and release the assembly from the latched position. This upward movement in the plunger allows a full flow of fluid through the passage 6. The movement of the plunger assembly permits the fluid to move up in the well and of course if the fluid flow-is suflicient it may be elevated to thesurface.

In Fig. 2 a plunger is shown as having the pointed lower end 4| and having the closed internal cavity 42 to reduce the weight thereof. This plunger has the swab cups 455 thereon which are made up of the frusto-conical resilient cups 44 retained in position by the springs 45 Which are in turn confined at the lower end by a ring 66. 'Two of these swab cups are shown.

The closure is supported between the lower end of the upper pipe section 5| and the upper end of the lower pipe section 52 where the pipe sections are connected by a coupling or collar 53. This closure may be of any type as illustrated as being of material such as cast iron.

The upper end of the plunger has a head 55 thereon which is arranged to be struck by the weight or object 25.

This plunger 40 may be positioned as shown in Fig. 2 when the pipe is lowered into the well, then the weight 25 drops so as to break the closure 50 and the flow of fluid then movin upwardly in the pipe will exert a pressure under the swab cups so as to force the plunger out of the broken closure and upwardly in the pipe.

Fig. 3 shows a plunger body which is similar to that described in Fig. 2 except that a plunger rod BI is slidable therein and has the perforating head 62 on the lower end. A coil spring 63 is disposed between the body 60 and the retainer ring 64 is threaded on the upper end of the rod 61. The swab cups fit sufli'ciently tight inside of the pipe 66 to retain the parts in the position shown.

When the object 25 strikes the upper end B? of the rod 6|, it will be snapped downwardly to break the closure 50. The sprin 53, however, absorbs the impact of the weight so that the backing cups will not be sheared from the cylindrical body 60.

Broadly the invention contemplates a closure perforator for pipes wherein the fluid flow which is initiated by the breaking of the closure will remove the perforating assembly from within the closureand force it along the pipe.

4 What is claimed is: 1. A disc perforator assembly for well pipe com-' prising pipe connection, a frangible flat disc seal retained thereby, means movable in the pipe to engage and break said disc including a plunger, means to normally latch said plunger in the pipe above said disc, additional means movable in the pipe to strike and release said plunger to break said disc, and still additional means on said plunger to allow retraction to be effected from the broken disc.

2. A disc perforator for wells comprising a body, a lower end on said body to engage and break a frangible disc in the well pipe, and means also on said body to be engaged by fluid moving up in the well after the disc is broken so as to move said end out of the broken disc.

3. A perforator for pipe obstructions comprising a body, a member thereon to engage and break the obstruction, and means on the body to substantially fill the pipe around the said member so that the flow of fluid released by such break willthereafter remove said member from the break to be carried along the pipe with the flow of fluid.

4. A pipe in a well, a frangible closure for said pipe, a plunger to engage and perforate said closure, an enlargement about and above said plunger to substantially fill the pipe so that the flow of fluid upwardly in the pipe through the perforated closure after the perforation will move said plunger out of the perforated closure.

5. A pipe in a well, a frangible closure for said pipe, a plunger to engage and perforate said closure, an enlargement on said plunger to substantially fill the pipe this characteristic causing the flow of fluid in the pipe after the perforation to move said plunger out of the perforated closure, said enlargement comprising a collar about the plunger.

6. A pipe in a well, a frangible closure for said pipe, a plunger to engage and perforate said closure, an enlargement on said plunger to substantially fill the pipe, said enlargement comprising a collar about the plunger, and means in said collar and engaged by said plunger to lock the collar in the pipe.

7. A pipe in a well, a frangible closure for said pipe, a plunger to engage and perforate said closure, an enlargement on said plunger to substantially fill the pipe, said enlargement comprising a collar about the plunger, and means in said collar and engaged by said plunger to lock the collar in the pipe, said means being releasable by upward movement of the plunger after the perforation.

8.. A pipe in a well, a frangible closure for said pipe, a plulnger to engage and perforate said closure, an enlargement on said plunger to substantially fill the pipe so that the flow of fluid in the pipe after the perforation Will move said plunger out of the perforated closure, said means including a resilient sealing member carried by the plunger.

9. A pipe in a well, a frangible closure for said pipe, a plunger to engage and perforate said closure, an enlargement on said plunger to substantially fill the pipe this characteristic causing the flow of fluid in the pipe after the perforation to move said plunger out of the perforated closure in movable position thereon.

10. A pipe in a well, a frangible closure for said pipe, a plunger to engage and perforate said .closure, an enlargement on said plunger to substantially fill the pipe this characteristic causing the flow of fluid in the pipe after the perforation to move said plunger out of the perforated closure in movable position thereon, and a spring between said plunger and sealing means to absorb the shock of movement of the plunger.

11. A perforator for a closure in a pipe in a well comprising a collar in the pipe, a recess in the interior of the pipe, lock balls in the collar and fitting into said recess, a plunger in the collar and engaging said balls to hold them in looking position, a spring in the pipe supporting said plunger, a frangible closure adjacent said plunger, said plunger being movable downwardly when struck from above to perforate said closure, compress said spring and then be thrown upwardly by the spring to be released from the closure, and means on said plunger to be engaged so as to elevate said plunger to release said balls and collar to permit movement of the plunger and collar upwardly.

JANES- LUTHER JOHNSTON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,884,165 Otis Oct. 25, 1932 2,232,688 Boynton Feb. 25, 1941 2,352,744 Stoddard July 4, 1944

US661939A 1946-04-13 1946-04-13 Disk perforator for pipes in wells Expired - Lifetime US2565731A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US661939A US2565731A (en) 1946-04-13 1946-04-13 Disk perforator for pipes in wells

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US661939A US2565731A (en) 1946-04-13 1946-04-13 Disk perforator for pipes in wells

Publications (1)

Publication Number Publication Date
US2565731A true US2565731A (en) 1951-08-28

Family

ID=24655726

Family Applications (1)

Application Number Title Priority Date Filing Date
US661939A Expired - Lifetime US2565731A (en) 1946-04-13 1946-04-13 Disk perforator for pipes in wells

Country Status (1)

Country Link
US (1) US2565731A (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3042116A (en) * 1959-09-30 1962-07-03 Otis Eng Co Expendable sealing plug
US3980134A (en) * 1973-12-26 1976-09-14 Otis Engineering Corporation Well packer with frangible closure
US4151881A (en) * 1977-09-22 1979-05-01 Armstrong Ernest E Apparatus for completing a well
US4691775A (en) * 1986-03-25 1987-09-08 Dresser Industries, Inc. Isolation valve with frangible flapper element
US5137088A (en) * 1991-04-30 1992-08-11 Completion Services, Inc. Travelling disc valve apparatus
US5205361A (en) * 1991-04-30 1993-04-27 Completion Services, Inc. Up and down travelling disc valve assembly apparatus
US5240071A (en) * 1991-04-30 1993-08-31 Shaw Jr C Raymond Improved valve assembly apparatus using travelling isolation pipe
US5301904A (en) * 1993-03-17 1994-04-12 The United States Of America As Represented By The Secretary Of The Navy Canopy breaking device
US20090065194A1 (en) * 2007-09-07 2009-03-12 Frazier W Lynn Downhole Sliding Sleeve Combination Tool
US20090139720A1 (en) * 2007-12-03 2009-06-04 Frazier W Lynn Downhole valve assembly
US20100212907A1 (en) * 2007-12-21 2010-08-26 Frazier W Lynn Full Bore Valve for Downhole Use
US20110155392A1 (en) * 2009-12-30 2011-06-30 Frazier W Lynn Hydrostatic Flapper Stimulation Valve and Method
US20110155380A1 (en) * 2009-12-30 2011-06-30 Frazier W Lynn Hydrostatic flapper stimulation valve and method
US20110240295A1 (en) * 2010-03-31 2011-10-06 Porter Jesse C Convertible downhole isolation plug
US9194209B2 (en) 2007-12-03 2015-11-24 W. Lynn Frazier Hydraulicaly fracturable downhole valve assembly and method for using same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1884165A (en) * 1929-09-26 1932-10-25 Herbert C Otis Temporary seal for well tubing
US2232688A (en) * 1938-11-28 1941-02-25 Boynton Alexander Cement dump bailer
US2352744A (en) * 1941-04-14 1944-07-04 Halliburton Oil Well Cementing Cementing and floating equipment for well casing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1884165A (en) * 1929-09-26 1932-10-25 Herbert C Otis Temporary seal for well tubing
US2232688A (en) * 1938-11-28 1941-02-25 Boynton Alexander Cement dump bailer
US2352744A (en) * 1941-04-14 1944-07-04 Halliburton Oil Well Cementing Cementing and floating equipment for well casing

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3042116A (en) * 1959-09-30 1962-07-03 Otis Eng Co Expendable sealing plug
US3980134A (en) * 1973-12-26 1976-09-14 Otis Engineering Corporation Well packer with frangible closure
US4151881A (en) * 1977-09-22 1979-05-01 Armstrong Ernest E Apparatus for completing a well
US4691775A (en) * 1986-03-25 1987-09-08 Dresser Industries, Inc. Isolation valve with frangible flapper element
US5240071A (en) * 1991-04-30 1993-08-31 Shaw Jr C Raymond Improved valve assembly apparatus using travelling isolation pipe
US5137088A (en) * 1991-04-30 1992-08-11 Completion Services, Inc. Travelling disc valve apparatus
US5205361A (en) * 1991-04-30 1993-04-27 Completion Services, Inc. Up and down travelling disc valve assembly apparatus
USRE34758E (en) * 1991-04-30 1994-10-18 Osca Travelling disc valve apparatus
US5301904A (en) * 1993-03-17 1994-04-12 The United States Of America As Represented By The Secretary Of The Navy Canopy breaking device
US8157012B2 (en) 2007-09-07 2012-04-17 Frazier W Lynn Downhole sliding sleeve combination tool
US20090065194A1 (en) * 2007-09-07 2009-03-12 Frazier W Lynn Downhole Sliding Sleeve Combination Tool
US7806189B2 (en) * 2007-12-03 2010-10-05 W. Lynn Frazier Downhole valve assembly
US20090139720A1 (en) * 2007-12-03 2009-06-04 Frazier W Lynn Downhole valve assembly
US9194209B2 (en) 2007-12-03 2015-11-24 W. Lynn Frazier Hydraulicaly fracturable downhole valve assembly and method for using same
US20100212907A1 (en) * 2007-12-21 2010-08-26 Frazier W Lynn Full Bore Valve for Downhole Use
US20110155392A1 (en) * 2009-12-30 2011-06-30 Frazier W Lynn Hydrostatic Flapper Stimulation Valve and Method
US20110155380A1 (en) * 2009-12-30 2011-06-30 Frazier W Lynn Hydrostatic flapper stimulation valve and method
US8739881B2 (en) 2009-12-30 2014-06-03 W. Lynn Frazier Hydrostatic flapper stimulation valve and method
US20110240295A1 (en) * 2010-03-31 2011-10-06 Porter Jesse C Convertible downhole isolation plug

Similar Documents

Publication Publication Date Title
US3358769A (en) Transporter for well casing interliner or boot
US3635288A (en) Liner-cementing apparatus
US2381929A (en) Well conditioning apparatus
US2589506A (en) Drillable packer
US7963340B2 (en) Method for disintegrating a barrier in a well isolation device
EP0118994B1 (en) Cementing tool for wells
US7316274B2 (en) One trip perforating, cementing, and sand management apparatus and method
US5103911A (en) Method and apparatus for perforating a well liner and for fracturing a surrounding formation
US2673614A (en) Anchoring assembly for oil tools
CA1201376A (en) Bar actuated vent assembly
US4823882A (en) Multiple-set packer and method
US2749840A (en) Gun perforators for wells
US4691775A (en) Isolation valve with frangible flapper element
US3191680A (en) Method of setting metallic liners in wells
US3191677A (en) Method and apparatus for setting liners in tubing
EP0261287B1 (en) Fluid pressure actuated downhole apparatus
US3385372A (en) Flow control float collar
US4813481A (en) Expendable flapper valve
US3361220A (en) Jarring or drilling mechanism
US3273641A (en) Method and apparatus for completing wells
US4903775A (en) Well surging method and apparatus with mechanical actuating backup
US4601492A (en) Releasable coupling
US7021387B2 (en) Wellbore pump
US2640546A (en) Apparatus for operating tools in well bores
US3831680A (en) Pressure responsive auxiliary disc valve and the like for well cleaning, testing and other operations