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Publication numberUS3175617 A
Publication typeGrant
Publication dateMar 30, 1965
Filing dateAug 22, 1958
Priority dateAug 22, 1958
Publication numberUS 3175617 A, US 3175617A, US-A-3175617, US3175617 A, US3175617A
InventorsNorth Daniel A
Original AssigneeJersey Prod Res Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Alignment means for perforating multi-pipe string wells
US 3175617 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

-PIPE STRING WELLS March v30, 1965 D. A. NORTH ALIGNMENT MEANS FOR PERFORATING MULTI Filed Aug. 22, 1958 ATTORNEY.

United States Patent() 3,175,617 ALIGNMENT MEANS FOR PERFORATING MULTI-PIPE STRING WELLS Daniel A. North, Snyder, Tex., assignor, by mesne assignments, to Jersey Production Research Company, Tulsa,

Okla., a corporation of Delaware Filed Aug. 22, 1958, Ser. No. 756,666

' 12 Claims. (Cl. 166-55.1)

`perforating` the other of the pipe strings.

The present invention may be briefly described as involving apparatus for use in a well comprising in com, bination a plurality of pipe strings in the well, including at least a first pipe string and at least a second pipe string. The pipe strings are arranged in the well eccentrically andparallel with respect to each other. At least one of said pipe strings has at least a portion of its inner `wall of an internal cross-sectional configuration different from the internal cross-sectional coniiguration of the other pipe string. The internal configuration of the one pipe string is such that it has a major and a minor crosssectional axis, the one pipe string being ,oriented with respect to the other pipe string with a selected onev of the cross-sectional axes in a direction to avoid, when extended, intersecting the periphery of any of the other pipe strings. An elongated body member is retrievably lowerable and movable through the one pipe string and is provided with perforating means and with biasing means for positioning the body member for movement through the pipe string, the perforating means and the biasing means being vertically spaced from eachother such that the perforating means is positioned to perforate the wall `of a pipe string in alignment with the selected one of the cross-sectional axes whereby only said one pipe string is perforated. The pipe string which isperforated may thus be perforated in alignment with either the major or minor cross-sectional Iaxis depending on how the pipe string is arranged relative to the other pipe strings.

The internal cross-sectional coniiguration of the selected one of the pipe strings maybe that of an ellipse, while the internal configuration of the other pipe strings may be circular. While the selected one pipe string may `have an internal configuration throughout its length different from the internal con-iiguration of the other pipe strings, it may be preferred that the internal coniguration of the selected one pipe string while the other portions of the wall of the selected one of the pipe strings Imay have an internal configuration identical to the internal configuration of the other pipe string. It isunderstood, of course, that each pipe string may have an internal configuration different from the other pipe strings in the well such that each and every one of the several pipe strings may be separately perforated in a selected zone without perforating the other pipe strings in the well.

Suitable internal configurations having major and minor cross-sectional axes are those such as an elliptical shape or oval or a grooved or slotted shape such that they are major and minor axes. `'Other suitable coniigurations may be rectangular and the like.

The elongated body member is provided with a biasing means which suitably may be a spring biased positioning arm or may be drag springs or may include one or more spring loaded bars or leaf type springs and the like.

.V1 and 2, numeral 11 designates awell bore drilled from 3,175,617 Patented Mar. 30, 1965 The perforating means may suitably be shaped charges or bullet guns, although it is intended that the perforating means may include mechanical-performing means or chemical perforating means. The perforating means are arranged on the elongated body member verticallyY spaced from the positioning means and in vertical alignment therewith.

The elongated body member is of a suitable diameter such as to be lowerable through the usual well tubing.

The present invention is quite advantageous and useful in Wells containing aplurality of parallel eccentrically placed pipe strings arranged in a bore-hole and cemented in place. One of the pipe strings may communicate with one or more of hydrocarbon productive zones, horizons, sands, intervals, formations, strata, and the like, from which valuable liuid such as hydrocarbons, including oil and/or gas, may be produced. The several parallel eccentrically placed pipe strings may be provided withuid communication for workover and recompletion operations, and may be positioned for multiple completions.

The present invention will be further illustrated by reference to the drawing in which:

FIG. 1 is a view, partly in section of the device of the present invention.

FIG. 2 is a sectional View taken along the line 2-2 of FIG. 1. v y

FIG. 3 is ya view similar to FIG. 2, providing a slight modification.

FIG. 4 is a view of the perforating gun of FIG. 1 illustrating the positioningmeans contained therein.

FIG. 5 is a sectional view illustrating a modiiication of the device as shown inFIG. 1.

- FIG. 6 illustrates still another modification -of the present invention.

FIG. f7. is a view of a perforating gun containing positioning means Iadopted -for use-in the device of FIG. 8. FIG. 8 is a sectional view illustrating a modilication of FIGS.Qand 3. p

Referring now to the drawing and particularly to FIGS.

the earths surface, not shown, to penetrate a plurality of subsurface earth strata or formations 12, 13, 14, 15, and 16, in which zones or intervals 12, 14, and 16 may b e productive of hydrocarbons.

Arranged in the well bore 11 are pipe strings 17 and 18, which are cemented in the well bore with cement 19. Pipe string 17 may be a conventional pipe string and have a circular cross-sectional coniguration while pipe string 18 may have a plurality of sections 20 and 21, which have an internal configuration different from the internal configuration of pipe string 17. For example, the sections 20 and 21 may be elliptical in cross-sectional configuration. Lowerable through the pipe string 18 and movable through the sections 20 and 21 on a conductor cable or wire line 23 is an elongated body member 24 provided with a Apositioning means 25 having a plurality of perforating means 26 arranged Ain perpendicular alignment with the perforating means 26 and vertically spaced apart therefrom. The perforatingmeans, 26 may b'e either bullet guns, shaped charges, mechanical type perforators, or chemical perforators as has been described. When the perforating means is` properly oriented; lit is then operated to perforate the `pipe string such as 18.

In FIG. l the body memberV 24Vis shown in section 20 for perforating section 20. It is contemplated that the body member 24 may be positioned in section 20 only a sufficient distance to orient the perforating means properly and then the perforating means may be operated to perforate the pipe string 18 in vertical alignment with the major axis of section 20 but above or below section 20, and the like. A

vA's shown inWFIGS. 2 and 3, Vthe pipe sections 20 and 21, positioning `arms 25, and perforating charges 26 arel relatively positioned so that when the section of pipe is perforated thepath ofthe perforatng element projected ,is entirely clear of the pipeV 17. 'I'his line of travel, yas shown, may be aligned with the major orrthe minor axis ofthe cross-sectional area of the pipe sections 20 or 21.VV

It is tov beV noted that the cross-sectional area across ythe minor axis Vof the sections and 21 are at least as *large as the cross-sectional area of the pipe 18. For this reason the gun housing24can be easily loweredlinto the sections 20A and 21whereb-y thepositioningrneans 25 "can then take over andialign the gun housing 24 `the Y Y proper position. 'f

Referring again to FIG. l, the pipe'17 is shown extendving below thelower end of the pipe 18 and adjacent the formationl. This formation, as will be understood, can

- be perforated by a conventional 'gun such as 29Y asrthere i is no dangerV of perforating any other pi-pe.`

Referring now to FIG. 4, the gun housing Z4 is shown attached to the'conductor cable ZlfartdV provided with rperforating means 26.k The body 24 is provided with a windowpsection `27 which has pivotally arranged therein VVpositioningmeans such as arms which a-re springV lbiased voutwardly by'leaf springs 28.

. When a .weighted body V.such as 24 is lowered into a pipe, `the torque exerted by the VWire line by which it is being lowered causes the body to spin almost continuously'.4 The 'springs 28 which bias Vthe varms 25 outwardly against the pipe Wall do not exert sufficient pressure against the arms to prevent Vthis rotation Yduring the guns travel through the round pipe 18. -It is only when the hg1'1n'ente'rs the oval shaped Vsections such Vas 20 and the arms are extended to their llimit along the major axis` of 'the cross-sectional areal-ofthe section 20 thatrthis rotaa perforating means such*` as 35 which,` injthis instance, may bea shaped charge. The perforator 31 is provided with a spring biased positioning'means-such as 33 as described in FIG. 7. Y

The present inventionrniay incorporate, if desired, a

switch circuit to fire thel charges which can only be operated when the positioning arms suchV as 25 and 33 are :fully extended.

In Vernployingthe present invention for perforating only one Yof a plurality of pipe strings, the different configurattion of the selected one ofthe pipe string'srnayrbe considered asa earn lsurface which may be either at the bottom ofthe pipe string, continuous throughout the several hydrocarbon productive intervals or f in `relatively short sections at intervals througho'ttheupipe string.V

These cam surfaces Yare oriented with `respect ,to the other of the pipe strings and an actuatingfor. positioning means controlled byrthe'cam surfacelis provided on the perforating gun to orient properly the perforating means such as shaped or jet chargessuch that only the selected one of the pipe strings is-perforated;V

, Theg'unk perforator or theper'for'ating device compris- Y ing the elongated body membe'rifand` perforating means I islowered through the selected pipe strings such that the perforating means is orientedfinfthe `proper direction Vfprior to operating the -perforating means `to perforatethe `tion 20 relative to the other pipes.y Y

selected pipe string.V K The pipes such as 17 and 18 would be initially connected to each other such'as by strapping prior torunning in the borehole so as to properly position the sec- The sections such as 20 and 21 `will usually have a maximum length of about 30 feetV but maybe shorter Y or longer asmay be dictated by requirements.

tion is prevented. It is only when the arms 25y are fully k'extended' that they 'eaert'suici'ent resistance to stop the body 24 from rotatiiigf-k v i y As illustratedrk in FIG.p5,foval`shapedpipe sections such as 20a maybe positioned just below the productive intervals suchV asv 12 and k1st-and need be `only, of Y suliicient the lower end, of the housing 24a. The section'sfztla, of course, couldbe located justabove the formations 12 rand 14'whereby the positioning arms 2.5 would be arrangedV in the upper end of the gun k'housing 24a.

j Y Referring lto FIG. 6 therefis illustrated one'oval sec-V tion 20 which'willfacilitate Vthe perforation of both the lzones 12 and 14; As shown, the arms 25 are located atY the upper4 endof the gun'housing 2411 to afford perforation of 'zone 14" If zone 12 risto be perforated, the arms 25 'would bef'located in the lower end of the housing.

It will be understood, .hcJv-vjever,V that Vone pipe Asection fsuch'as 20k or 20a could be placed above or kbelow all of the zones to be perforated; vand by means fof extensions length to 'accommodate aligning .action 'of the. arms` 25. As-can be seen, the positioning .arms 25areV located on As shown inf the description taken With'the drawing, theseveral ,pipe strings are cemented inplace -in proper orientation such thatonly one'fpipe Vstring'will -be perforatedl ata timeas desired `and' such that the other pipe string or 'strings may also be perforatedV separately withyout perforating other pipe strings r`inthe well. Y Thus production may :be .simultaneously hadfrom a plurality of zones with one'pipe'string' perforated-in each zone.

As shown in the drawing, the-...pipe strings 17 and 18 may be fluidly'cornmunicated by a passageway 43 formed byconnection44 whichv will allow fluid to be circulated Y from oneY of the pipestrings to Vthelotherof, the pipe strings for :completion and yworking-overY operations. When this is done, it will klrre'fdesirarbleto Ylower through and seal in one of thepipe strings a tubular member such that fluid mayflow upwardly through one of `the pipe strings only through .thetubular'member'for circulation tothe gunhousingto correctly placefthe'charges 26, any ,Y

` one o f the "zones could Vbe selectively perforated.

' l VReferring nowto FIG, '7, an elongated'body member "suchpasg31, which may'be similar to the elongated body member12h4, is provided' with a Yrecess' 32` having a bar f 33V `biased 'outv'v'ardly'v from recess 32`fby a spring means Vand;vertically'spaced fror'nxthebar 33 intheV recessj 32 36 provided with'an internal slotfor'groove 3'7. Arranged in the pipe string 36' is a'body member sugli-@S 3 1 having andsqueezing of cementand othertreating reagents as may be desired. -A descriptionfof` such completion and work-over .operations may. be V,found inpending application, YSerial No."602,246, now Patent No. 2,938,584, filed August k6, r1956,'fo`r John"W. Kenneday and Gilbert H. jTausch: While the invention has been described with respect to two pipeistrings in a well bore, it may be used Withthree, four, or more parallel; and eccentric pipe strings and is applicable theretorv with each pipe string provided with internal configurations different from each other for practice of' the present inventionV forlseparate such as'xhelicalcoil springs34Li kIn verticalkalignment perforation of each string 'in different VVzonesi'ivitl'iout damagingor perforatinganyofthefotherstrings.u y, ,Y

As shown clearlylin FIGS. 1f, 4, 5, 6andy7 of-the drawings, r:the ,positioningor.biasingrneans Ymay be arranged on either-the upper .for'1ow er end of the Velongated body member or the perforatingrneans may be 'arrangedV o n thebody member'above and below the biasing means. n `A'sjstated, the present invention'is quiteadvantageous and useful irl-that simplemeans are providedv for perforating only `one pipe stringV of a pluralityof pipe strings in a well.

aimera' The nature and objects of the present invention having been completely described and illustrated, what l wish to claim as new and useful and secure by Letters Patent is:

l. For use in a well, apparatus which comprises, in combination, a plurality of pipe strings in said well including at least a iirst pipe string and at least a second pipe string in said well arranged eccentric and essentially parallel to the first pipe string, one of said pipe strings having at least a portion of its inner wall of an internal cross-sectional configuration different from the internal cross-sectional configuration of the other of said pipe strings, the internal configuration of said one pipe string having a major and a minor cross-sectional axis, said one pipe string being oriented with respect to the other pipe string with a selected one of its cross-sectional axes in a direction to avoid, when extended, intersecting the periphery of any of said other pipe strings, an elongated body member retrievably lowerable and movable through said one pipe string, perforating means carried by said body member, and means carried by and biased outwardly from said body member for positioning said body member for movement through and contact with the wall of said one pipe string, said perforating means being carried by said body member such that said perforating means is positioned on said body member to perforate the wall of the pipe string in alignment with the selected crosssectional axis which avoids, when extended, intersecting the periphery of said other pipe strings whereby only said one pipe string is perforated.

2. Apparatus in accordance with claim 1 in which the internal configuration of said one pipe string is elliptical and the internal configuration of said other pipe string is circular.

3. Apparatus in accordance with claim 1 in which the inner wall of said one pipe string is provided with a grooved internal configuration and the inner Wall of the other pipe string is provided with a circular internal configuration, said one pipe string being oriented with respect to the other pipe string such that the selected one of the cross sectional axes is the major axis.

4. Apparatus in accordance with claim 1 in which the selected axis is the major axis.

5. Apparatus in accordance with claim l in which the selected axis is the minor axis.

6. For use in a well, apparatus which comprises, in combination, a plurality of pipe strings in said well including at least a first pipe string and at least a second pipe string in said well arranged eccentric and essentially parallel to the first pipe string, at least one elongated section in one of said pipe strings having an internal crosssectional configuration dierent from the internal cross-sectional configuration of the other of said pipe strings, the internal configuration of said section in said one pipe string having a major and a minor cross-sectional axis, said section being oriented with respect to the other pipe string with its major cross-sectional axis in a direction to avoid, when extended, intersecting the periphery of any of said other pipe strings, an elongated body member retrievably lowerable through said one pipe string and movable in said section, shaped charge perforating means carried by said body member, and means carried by and biased outwardly from said body member vertically spaced from said perforating means for positioning said body member for movement through and contact with the wall of said section in said one pipe string, said perforating means and said positioning means being carried by said body member such that said perforating means is positioned to perforate the wall of said one pipe string in vertical alignment with the major cross sectional axis of said section whereby only said one pipe string is perforated.

7. Apparatus in accordance with claim 6 in which the biasing means is carried on the upper end of said body member.

8. Apparatus in accordance with claim 6 in which the biasing means is carried on the lower end of said body member.

9. Apparatus in accordance with claim 6 in which the perforating means are arranged on said body member above and below said biasing means.

10. For use in a well, apparatus which comprises, in combination, a plurality of pipe strings in said well including at least a first pipe string and at least a second pipe string in said well arranged eccentric and essentially parallel to the first pipe string, at least one elongated section in one of said pipe strings having an internal cross-sectional elliptical configuration, the internal crosssectional configuration of the other of said pipe strings being circular, said section being oriented with respect to the other pipe string with the maior cross-sectional axis of the elliptical coniguration in a direction to avoid, when extended, intersecting the periphery of any of said other pipe strings, an elongated body member retrievably lowerable through said one pipe string and movable in said section, shaped charge perforating means carried by said body member, and means carried by and biased outwardly from said body member vertically spaced from said perforating means for positioning said body member for movemnt through andcontact with the wall of said section in said one pipe string, said perforating means and said positioning means being carried by said body member such that said perforating means is positioned to perforate the wall of one pipe string in vertical alignment with the major cross-sectional axis of said section whereby only said one pipe string is perforated.

1l. An apparatus for completing a well at a plurality of production levels comprising a plurality of conduits of diierent lengths, each of said conduits extending with its lower end to a level within a separate production interval, and at least one of said conduits being provided at a level adjacent the productive interval to which it extends with an alignment section having a noncircular cross-section with a major and a minor axis, said one of said conduits being oriented with respect to the other conduits to position a selected one of said axes of said section in a direction to avoid, when extended, intersecting the periphery of any of said other conduits.

12. An apparatus as defined in claim 11 in combination with an alignment tool arranged within said alignment section and spaced from the inner wall thereof by outwardly biased positioning means in said tool, said positioning means being movable in a radial direction and so disposed in said ltool as to lie on said major axis of said alignment section.

References Cited bythe Examiner UNITED STATES PATENTS 2,154,162 4/ 39 Hewitt et al 166--66 2,408,419 10/46 Foster 89-1.0Z 2,785,754 3/57 True 166-114 2,822,048 2/58 Tausch 166--114 2,85 8,107 10/58 Colmerauer 166-4 CHARLES E. OCONNELL, Primary Examiner.

BENJAMIN BENDETT, Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2154162 *Jan 14, 1939Apr 11, 1939Edward Kuster VivianMeans to orient tools in a well
US2408419 *Dec 2, 1942Oct 1, 1946Lewis Foster JamesWell explosive device
US2785754 *Oct 27, 1954Mar 19, 1957Exxon Research Engineering CoPermanent well completion
US2822048 *Jun 4, 1956Feb 4, 1958Exxon Research Engineering CoPermanent well completion apparatus
US2858107 *Sep 26, 1955Oct 28, 1958Colmerauer Andrew JMethod and apparatus for completing oil wells
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3496953 *Apr 18, 1968Feb 24, 1970Garrett Henry UGas lift valve mandrel for well pipe strings
US4071096 *Jan 10, 1977Jan 31, 1978Jet Research Center, Inc.Shaped charge well perforating apparatus
US4378845 *Dec 30, 1980Apr 5, 1983Mobil Oil CorporationSand control method employing special hydraulic fracturing technique
US4410051 *Feb 27, 1981Oct 18, 1983Dresser Industries, Inc.System and apparatus for orienting a well casing perforating gun
US4583602 *Jun 3, 1983Apr 22, 1986Dresser Industries, Inc.Shaped charge perforating device
US4726431 *May 19, 1986Feb 23, 1988James R. DuzanWell perforating apparatus and method
US4773299 *Jan 20, 1988Sep 27, 1988Halliburton CompanyWell perforating apparatus and method
US5054564 *Jan 18, 1988Oct 8, 1991Halliburton CompanyWell perforating apparatus
US5709265 *Jul 30, 1996Jan 20, 1998Weatherford/Lamb, Inc.Wellbore window formation
US5791417 *Dec 4, 1996Aug 11, 1998Weatherford/Lamb, Inc.Tubular window formation
US6024169 *Oct 24, 1997Feb 15, 2000Weatherford/Lamb, Inc.Method for window formation in wellbore tubulars
US6089319 *Mar 23, 1998Jul 18, 2000Weatherford/Lamb, Inc.Whipstock
US7469745 *Jan 30, 2002Dec 30, 2008Schlumberger Technology CorporationApparatus and method to mechanically orient perforating systems in a well
US8616293 *Nov 24, 2009Dec 31, 2013Michael C. RobertsonTool positioning and latching system
US20040144539 *Jan 30, 2002Jul 29, 2004Smith David RandolphApparatus and method to mechanically orient perforating systems in a well
US20110120731 *Nov 24, 2009May 26, 2011Robertson Intellectual Properties, LLCTool Positioning and Latching System
EP0919694A3 *Nov 25, 1998Sep 13, 2000Halliburton Energy Services, Inc.Method and apparatus for perforating a well
Classifications
U.S. Classification175/4.51, 166/63, 166/55.1
International ClassificationE21B43/119, E21B23/14, E21B43/11, E21B23/00
Cooperative ClassificationE21B23/14, E21B43/119
European ClassificationE21B23/14, E21B43/119