US1764481A

US1764481A - Combined fishing and swaging tool

Info

Publication number: US1764481A
Application number: US366971A
Authority: US
Inventors: Albert B Watkins
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-05-29
Filing date: 1929-05-29
Publication date: 1930-06-17
Anticipated expiration: 1947-06-17

Description

2 Sheets-Sheet 1 A. B. WATKINS Filed May 29, 1929 COMBINED FISHING AND SWAGING TOOL June 17, 1930.

June 17, 1930.

A; B. WATKINS COMBINED FISHING AND SWAGING TOOL Filed May 29, 1929 2 Sheets-Sheet- 2 1w:- un. e 5 7 kw A lnlllnyn-all .Illnll I.

f w An: object of the inventlon 1s; to provlde s v L combinedfishinghndswaging tool; that is adaptedto' bsused for-removingwsll casings 1-; lapsed;whilsbeing placed in a; welLho'len Anoth'erobj ect of theZinventjiOn isfuo pro 'gagement with a casing and to provide v s Spring;- constructionwhich williholds the css; 3 ing {engaging parts in contracted;pssitions 7 un-til the t ol is suddenly jarrd and to hsv e the spring, construction so arranged that if,

"1 40 thegqaisingengaging parts are again contract J "This invenfiion platesto impriovsmenfis in combinedfishing and swagi ng -toolsland"ni'sy- V beiconsidere'd as an inn;n'evement over the.

prior Patent N0.

@ *constiiliction disclosed in Iny l,'4c5 5r,3-l4, issuedfMay 15 1923. 1

' from well holesai lcl fonswaging'; casings that may have beCOmea-CQIIaps d; or partially c01- vidsan impi'bved combined fishing and swag ing tool'awhich is adapted to be lowredilnto I T j messing in awell .holelin a collapsedor'conv' tracted 1pnsibi0n' and then expanded into en- "gajgsment' with:theinterior of a casingby bef' ing;suddenlyfjarred. In ,my priorpatnt' therewis disclosed a construction wherein acentrak :ban supports the casing jengaging pa ts zind is 'adapted =t0; l-ift these parts-with 7 the ezfisingwhen the casinghas been canghtr; Acahle isiemployed to hold the parts in con; 1 1 tracted 01? "col-lapsed positions so z tha t. (two;

g sintb thewell. I These elements;intsrfers vithg separate elements arelowered simultaneously e931(31):Otheraind are aptto cause glifiienlty'.

I the improved constnuction'thsuss of the cit-f ble 'fior hold-inglthe casing engaging-:1 aJrtsin-Q contracted: position is entirely el imil laiec1. V Another'object of the invention is to p30- "Slide-{3 11 improved combined fishing and 7 swaging rtool havi-ng a central suPportin-ghh suspending member carrying caslnggengatging; IPR'I'tS: adapted to be sxpanded into 'en'-' 1 I fsoMBIfinn thrsadsdias indicated I i is? :Yi w is m la vtos n, ing the tgoLinexpandsd-ipositipm-- s kfil l iistmt s venticgil seotio 1 seejsiqn through' as t-0 mb dxing hsn n s whichr-i ofimod fi constrnatisn, ilhsfiratihgfth 43001 Jim;

lapsed L01; contr sqped"pbsitipln Fi -1 s-Wi' im anrt -j- H ezpa d'spo tfio err g; ozt a mpa y gv rawins w in as m e e ne enam s 2 t similanp t w hwu ia -th nimpmyw i '0 sp n ng ib-3P: w n

p ndi glg onst n 1 n= Extendi v H the suppgrtinga'ii imoreidinansa 7 'verse ipertilres 1 2 531111; 1 the: lfiops' efi which:

, presenvupwarmy,(ima ingbea in -fis es; 7 H

'edz-yvhil'e in" a Well hole that the spring' con; I,

- Wi th phe foregsingz aln'dh then obj i 'fi a in rme gsrm diaears 1a t ken Submagainsti the divergent bearing surfaces 14 at which the outer ends of the links 22 are pivotally connected as by rivet-s 23. The inner ends of the links 22 extend into the

apertures

12 and 13 and are pivotally connected thereto as by rivets 24. By reason of the pivotal 7 the tops of the

apertures

12 and 13. whereas when the

casing engaging members

17 and 18 are in expanded positions the links bear against the stops limiting the downward movements of the links so that the links will not be capable of swinging-past the horizon-p tal. In the inwardly bent upward ends 20 of the casing engaging members there'are formed grooves which contain inserts 26 forming shoulders indicated at 27, Leaf springs 28 have their upper ends secured as 5; by bolts 29 to the upper end of thesupporting bar 10. A collar 30 is also preferably em,- ployed to assist in holding the upper ends of the leaf springs against the supporting bar. The lower ends of the leaf springs arebent inwardly to form hooks 31 engageable upon the shoulders 2?. Suitable studs '32 are se-' cured to the: supporting bar 10 and have shoulders or stops 33 formedthereon as bynuts. These nuts are adjustable and are =1 adapted to limitthe inward movements of the leaf springs 28. 'Nuts 34 are screwed onto the outer ends of the studs and coil springs 35 are compressed between theleaf springs and the" nuts 34, urging the leaf springs inwardly.

The operation of the improvedcombined fishing andswaging-tool is as follows: Be-

fore lowering the tool into the well the cas

mg engaging members

17 and 18 are caused to assume the collapsed positions shown in Fig. 1. In this position the hooks 31 'are"engaging the shoulders 27. The device is then lowered into a well and suitable provision is made for suddenly jarring the tool" while it is inthe well. This may be accomplished by incorporating a to-olcommonly known as a jar-in the suspending structure or the sus-' pending structure may be connected to a walking beam or a pitma-n at the surface.

The particular manner in which the tool is suddenly jarred may be varied and is immaterial in so far as the present invention is concerned. When the tool is lowered into the casing C which it is desired to lift in the well andreaches the desired location the tool" is given the sudden jar above referred to, by

having its downward movement suddenly arrested. The' inertia ofthe

casing engaging parts

17 and 18 is such that these parts Wlll swing downwardly springing past the hooks 31 on the leaf springs 28. The tool will then expand into engagement with the interior of the casing C, after which the casing may be elevated by the supporting or suspending bar '10. Suitable jaws or slips 36 may be secured to the

casing engaging parts

17 and 18 which have upwardly directed teeth to facilitate lifting the casing by the tool. If for any reason it should be desired to cause the tool to disengage the casing and leave the casing in the hole the central supporting bar 10 can be suddenly dropped and ifthis dropping of the bar lO'is fast enough the bar 10 will return to the position shown in Fig. l with respect to the casing engaging parts-1'1 andl8. In so doing, thehooks 31 will slide on the outer surfaces of the inserts 26 and ride over the shoulders 27 so that the leaf springs will again-hold the casing engaging parts in collapsed positions so that the tool can be withdrawn from the well. a

The construction shown in Figs. 4 and is quite similar to that disclosed in Figs. 1,

2 and 3. This construction comprises a central supporting bar 40 carrying the stops 41 and having the transverse apertures in which the links 42 are pivoted. The links 42 have their outer ends pivoted as at 43 to ears 44 on the interiors of the casing engaging parts 45. The construction differs from that disclosed in Figs. 1 2 and 3 in that the interior surfaces of the casing engaging parts 45 have hooks or shoulders 46 formed adjacent their upper ends. Leaf springs 47 are fastened as by bolts 48 to'the upper end'of the supporting bar 40; A collar 49 encircles the upper ends of the leaf springs andthis collar is provided with outwardly projecting cars 50. The lower ends of the leaf springs have latches 51 hinged'ly connected as at 52 and these latches have their ends hooked as at 53, which are engageable upon the hooks or. shoulders 46. Rods 54 slidably extend through the ears 50 andhave leaf coil springs the casingengaging members are in collapsed positions these springs are strong enough to retain them there. It vwill' be apprec ated from the disclosures made on the drawing thatwhen the links are in their uppermost positions that these links carry-most of the weight of the casing engaging members.

However,when the casing engaging members are jarred or urged intoexpanded positions,

outWa'rdly,,the portion of'theweightof the 1 casingengagingmemberscarried bythe links decreases; *Thiscausesan increased portion ofthe eight of the casing engagingjmem hers-to be sustainedfby the springdactuated means sothat althoughthe' springs rinity be; fiexedor;compressedwhen the casingengag-j ing nernbers are expandedy-the increase in T QupWerd forceeXerted-by-the springlmelan's is, k more than'loyercomeby the increased portion I ofth'ej Weight vof the" cesingengaging 1ne1n-" bers left" unsupported byfthe links. When -corporated in the cable which maysu'spenid thefdreft bar-fl; the casing engaging mem berfs 45 by reason. of their momentum swing downwardly and outwardly: into-engagement rwiththecasing so that the casing may be ,e elevaqted by the tool. Tlielcesing engaging members are prevented?from expanding too j far-by: reason of the links 4 2 engeqg'ingthe 5 stops'At hich stops prevent the'links from' o swinging past the, horizontal or" pastjce'nter.

" 'lO-release the casing the draft or supporting n casing engaging members to swing; back into 7 collapsed positions with respect theretonnd ,fjhfihiSf position the. spr ings 5 5- ill be capable 1 of retaining' the casing engagingjpartsfin "vtheirf'uppermost positions,

V pending means'isnecessery inlowering the .tqolihtblthe 'fvvell; The tool is capable of '4 beingxexpanded into engagementfwith the '45: v V linksxmay have their inner endsfpivotally I .fztste'nedfifto pintlesoiflbeaiings arranged on n n I 7 p I V acentral1supporting member ceslng. engage; ing members disposediabout the supporting.

the'sides of the draft-ban; Animportant ii'eature oflthe' present invention resides in the 'faict that'the stops whichli nitthe down- Ward movements of the links areso arranged V lth atmthese' links have th'eiridown ward move- I me'nts limited for stopped wherein. theyassu'nie positions materially 'aboveithe hori alwaysieesy to cause the tool'todisengagethe collapsed *or indentedportioirof theycasing- "andthe' toolmaybeiused as e'hammer pound me2nis Tatteched ito*t1i;;1+;ppq t" *s'topstfp r; fihgfil111k mime j the supporting or draft rod 40 is suddenly l I I stopped vor suddenlyjairedin any suitable manner such as by a cable jarwhich is 'in hers incollapsed positionabouttheioentrelf support-butadapted-to ellow them 'tomove. V v n intoex'pandedpositionswhen thetoolhtsilisf 1 downward; moyeinent suddenly-Terrested; I 3 Aifishing': and; sweging tool comprising 'a centrel support, "convex members arranged e aboutsaid supportyli-nks pivotally connect ib'ai 40'inaybe'suddenlydropp'ed, causing-the ing the--conyexkmembers tothes upport", and n 5 ing the convex members in collapsed position until the tool is jarred and then allowtheln to move into expandedjposit-ionsj engage' y V jment withthe Welljcesing. 1 From-the above described constructions'it Wi'llbe appreciatedtheten improved COIII-Y ybined fishing. and swaging tool ,i's providedf which is so constructed thaton1y one s'us'-- v ing engaging" rnembers t o .the supporting member Whfereby thecjasingsengagging mein casing by jarring orfsuddenlystopping the dQWIIWtiClffilOVGmellt of the draftorsup-I portingfban, In snuflljfize tools'the linl-rs22j i it the pportin member has itsydoWnward-"n l yhold 'n t in a in -m m e 1 'them'to-inove into fefipended positio'n:.,wl1en; i bar at the} centeributinltrge size tools these m r' wh r h 'i ae g engaging me o bers may swing from contractedposltions n-i nontaI. By virtue of suchconstruction it is allowthem to move into expanded positions ,When ithe; supporting member has. its down 3 to ward" i'moyem'ent 3. suddenly arrested, s aid spring meanslbeing adapted to subsequently, xhold" the casing; engaging members in contreated Easing and as'sume'its collapsed position'for 2; i Ael. e.\.. 1(. mp .i a central support, convex rneinbers arranged about said support, Links" piyotally connect inothe Iconveximembers' tofthe supportysaidj lin s-hstvingqtheir rnovementsi 1i1nited', ,ndj means for-normally holding the; convex mem-i resilient'yieldable imeafnsfornormallyhold f 4.. A- fishingandfsvyaging toolcomprising a central supporting member,aca,sing en ag-V mg m idispQ edabout th s p ti member, links piyotally; oonnecting the as hers may swingirom contracted positions inf- 1W to expjanidedpositionsfendspring means'nor 5 in eont reeted-positions but adaptedto allowf movement suddenly arrested) e member;- links piyotally, co'nhecting the ces-f ilig enga'gingfmembers to f the; supporting to expanded' positions; spring mean normally holding the casihgengaging mend} here in} co'ntrawt ed- -positions but] 'a'daptedflto v p s t e lii e 1 being e ur ed thereto f-jii. ff q 1. 65A -fishing nd; sweging tool; YcOmpriI V ing a centrel 'supporting member casing en