Патент USA US2096234код для вставки
Oct. 19, 1937. ' w, Q_ ERWIN 2,096,234 PIPE SWEDGE Filed Feb. 8, 1936 F192. l1L-- i www 1 ’ 1 I 1 1 \ 1' ' l 1l 4/ ‘ \ ' I i î i 1e 1 | l. I - '1 I L1l il v 4]““Ml I 1I } 1 . mm: 1 _, Y 1 | 29 40 ì/ /ú 1 a# 255 l \ 2/ ' 4 I I Jl 29 1 ' î ' / 3/ e@ g : Í Í 5j j1 . «Ff 1. ‘25 / /a I1 '1 ' nl" _ l. . l / .1 :1 26- 1:| 1:1 27 1 1 1 1 Il 1I i |1 1 Il 1| 'll i 1| 1| /g /4 /6 l /4 1 |11| Il|| 1 1I Il g 1 1| 2 ll ¿.:l /áa ' _Z'îwe/zfor ¿0e/domi@ Erwin). www . JÍïo/weg. " ' Patented Oct. 19, 1937 UNETED> STATES FATET 2,096,234 PIPE SWEDGE Weldon C. Erwin, Huntington Park, Calif., as signor to John Grant, Los Angeles, Calif. Application February 8, 1936, Serial No. Y62,934 10 claims. advantage in the following detailed description of the invention in one of its typical and'p-referred lapsed condition, and, if desired, simultaneously Throughout the description Areference is had 5 to round out the pipe to substantially true cir cularV form. While it is generally useful for swedging allkinds of pipe, the invention has been made particularly tot provide a tool for expand ing and rounding out collapsed casing in wells, and for eliminating many of the disadvantages and undesirable features of the usual well casing swedges. The present tool may be characterized as a rotatably driven type comprising a member shaped to expand the pipe by advancement through it, and means whereby rotation of the driving stem causes a succession of advancing blows to be imparted to the swedging member. The latter operates to expand the pipe to gen 20 erally rounded form, and, for certain types of work, the degree of expansion and rounding out accomplished by the swedging member may be suñicient. However, I generally prefer to include in the tool, additional means for rounding the 25 pipe to true circular _form immediately following the expansive action of the swedging member. For this purpose I provide, preferably, a plurality of circularly spaced rollers carried on the body of the tool, these rollers ñttingthe casing closely 30 and traveling in a true circular path. a In'its preferred form, my improved pipe swedge comprises a body connected with the rotatable driving stem, a mandrel extending axially from the body, and a tapered swedge sleeve carried on the mandrel and movable longitudinally and ro tatablyrrelative to both the mandrel and body. The> body and swedge sleeve are provided with in terengaging annular cam surfaces having abrupt shoulders arranged so that as it rotates relative toV the sleeve, the body slips off the shoulders and strikes the sleeve to_deliver to it a succession of blows at al frequency in accordance with the rate at which the body is rotated. The sleeve thus is driven between the collapsed walls of the pipe, 45 and immediately after the walls became expand ed,'they are engaged by the rollers and rounded out to true circular form. 50 (01.153451) This invention has to Vdo with Van `improved type of pipe swedge that operates by advance ment through the pipe to expand it from col In addition to the forms. . « _ _ v to the accompanying drawing, in which: .Y Y _ » Fig. 1 is an elevation showing the swedge with in a well casing, the body and sleeve sections being parted to more clearly illustrateY the cam surfaces; ' - » Y Fig. 2 is a view similarV to Fig. 1 showing the parts at the slip-off position ;Y .. y . Fig. 3 is a sectional view similar to Fig. 2; and Fig. 4 is a body section taken on line» lI-lI of Y' Fig. 1. . In the drawing, the swedging tool, generally indicated at I0, is shown positioned »within the well casing> II ata point above the partially co-l lapsed portion IIa thereof. For purposes of de-` scription, the pipe swedge It) may be regarded in one aspect as comprising a pair of relatively ro tatable body sections I2 and I3, section I2 com prising the swedging member which ,expands the collapsed Lwalls IIa of the casing as it is driven between them, and section I3 the driving mem ber which drives the swedging member as the two sections rotate relatively,VV section I2 has a 255 generally tapering curved shape along-its lower surface I4 below its upper cylindric portion I5 which more or less closely nts the wall of the casing. The'surface I4 is substantially straight for a distance, and then curves inwardly at-its so lower end, as illustrated at Illa. structurally, the tool may also be considered as comprising a body I3, a mandrel I5 extending axially below the lower end of the body, and a swedge sleeve I2 which is movable longitudi nally and rotatable relative to both the mandrel and body i3. Longitudinal movement of sleeve I2 on the mandrel I 5 is limited downwardly by engagement of the sleeve Vwith an enlargement VIëìa o-n the lower end of. the mandrel, and up wardly by engagement between cam surface I'I on the upper end of the sleeve with a Vcorre spondingly shaped cam surfaceïiß on the body. In elîect, the body I3 and mandrel I S are integral, although for convenience in construction the body proper may b-e formed by a sleeve 'i3d hav efliciency and easerwith which it operates, the present tool is characterized byY its extremely ing a tightly shrunk fit on the upper enlarged simple andrugged construction, and, consequent ly, its great strength and ability to withstand The pipe swedge is operated by a rotatably 50 driven stem which, in the present instance, con the' severe conditions incident to its use. The above mentioned as well as numerous fea sists of the drill pipe I9 and a connection 23 with body I3 of the tool. The connection at Ztl may be Vof any suitable type, and is here shown tures and advantages of the invention will .be diameter portion Ißb of the mandrel. ‘ 55 more fully'understood and explained to better ` typically as comprising a shank 2i in the form 2 2,096,234 of an upper continuation of the mandrel |67, and ’connected to the drill string by coupling 22. As will be apparent, both downward pressure and rotational movement may be applied to the tool by way of the pipe I9 and drive stem 2I.. The annularopposed end faces I 'l and I 8 of sleeve I2 andthe body I3, are shaped to provide inclined cam surfaces 23 and 2liV terminating end of the mandrel is caused to impact against the lower end of the sleeve, and therebyrdrive abruptly at the Yvertical slip-oir shoulders 25 it upwardly from’. wedged position'in the casing. mandrel maybe utilized to advantage in an up ward jarring operation to free the sleeve from the casing in the event the sleeve should become tightly wedged within the casing. By_repeated Y upward jarring movements of the pipe string Ul and mandrel, the enlargement Iëa'on thelower spaced 180° apart. As best illustrated inV Fig.> It may be mentioned that thelower reduced por tion of the mandrel within the'V sleeve may be are substantially straight, i. e., without appre"V __ made as long as is necessary or desired to en ciable slope, as are also‘the surfaces 25 between able the mandrel to deliver to the sleeve an eiîec- Y 2, the cam surfaces 23 adjacent the shoulders Z5 the sloping cam surfaces and the bases of s-houl- j >»tive blow in the upward jarring operation. ` ItV will be understood that the drawing isV 15 ders 25. Referring now to Fig. 3, the` upper Íend of”v merely'typical andillustrative of the invention sleeve I2 is counterbored toy receive the large` in one of its preferred forms, and that various diameter portion IiâbI of the mandrel, andl to changes in modiñcations may be made without provide a stop shoulder 21 which is engagedby departure from theinvention in its true spirit and scope. Í 20 the mandrel to limit downward movement of the body I3 relative to sleeve i2 and to preventcam ' ~\ .~ -V l surfaces 23 on the body from engaging the'sleeve '1. Inra pipe swedge, a body comprisingY a mem-« surfaces 25,k when the parts have rotated rela-` ber shaped to expand the pipe from_ collapsed ÑIclaim: v tively to the slip-off positionof Fig. >2. 25 i l . condition by advancement through the pipe, driv-V kAs best illustrated in Fig. 4., the body Iä'coni tains a> Yplurality of vertically extendingr and ing means connectedto Vsaid body, and means adapted to be insertedwithinthe pipe and co equally circularly spaced recesses 2S, the upper ' acting with said memberto transmit> thereto a , ends. of which are` closed by a Vretaimîng ring .2d succession Vof advancing blows by rotation of said secured to the body by screws'îl‘iii. Ring 29 bears drivingmeans. ' 2. In a pipe swedge, Y Y a 'body Í> comprisingla , -Y ..~ » mem r30 against the mandrel shoulder@ to'prevent me n Vber lßhfrombecoming jarred loose, and moving ber sl'iapedV to expand the pipe from collapsed upwardly in the mandrel from the position shown, ' condition by advancement through the pipa-»drive as a result of the repeated downward impacts oi ing means connected .to said body, means adapted lëb against the sleeve I2 during .operationof to be inserted within the pipe and'coacting with Ythe tool. Recesses 28 contain rollers 3l which said member to transmit thereto a succession of project slightly beyond the cylindric surface >of advancing blows byrotation of said driving means, the VVbody, the circular extentof the recesses be. and means operated byrotation of said driving ing sufficient toretain the rollers.V Preferably, Y means for roundingout the pipe after the rollers ñt the recesses with suiîicient loose Y been expanded Vby said member. . 40 ness as to permit their rotation while in engage ment with the casing during rotation of the body. 43. In a pipe swedge, a body comprising a meml 40, ber having a longitudinallycurved tapered sur In well casing swedging operations it may be desired t@ maintain a flow ofv circulating iiuid through the tool so that the fluid will be dis-k face adapted to engage-and expand the pipe from collapsed conditionrby` .advancement through the charged inthe vicinity of the swedging sleeve. For this purpose I drill the full length of the mandrel Vto» provide a bore 4I through which the fluid is discharged downwardly from pipe I9 through the tool and out vthe lower enlarged; end Ißa of the mandrel. Y ` . b VIn operation, the tool is lowered within the casing on the lower end of the drill string until: the swedge sleeve l2 engages'the collapsed wall IIa. Thereupon, the pipe string is rotated and 55 the necessary amount of weight applied to the swedge sleeve via engagement with the body I3 at the cam surfaces I'I and I8. As the pipeV isV rotated in the direction of theV arrow, bodycam » surface i3' rises over the sleeve surface Il and, 60 twice during one complete revolution, theY body shoulders 25 slip-off the corresponding shoulders on the sleeve, vcausing the mandrel to impact downwardly against the sleeven counterbore pipe, driving means connected to said body, meansadapted to be inserted within the pipe and Vco acting with said member to transmit thereto "a, ` succession of advancingblows by rotation of saidV driving> means, and a plurality Íof rollerscarried by said body and` operating to round out the pipe after 4. Ina it has pipe been Yswedge, Vexpanded a body by adapted said member. tol-be in 50 serted, in a pipe» andcomprising afpair of rela tively rotatable sections, one» of. said sections being adapted to> engage and expand the pipe from col lapsed condition by advancement >through the pipe, .rotatable driving means Aconnected to said body and adapted to cause said sections to rotate relatively, and means `for Vtransmitting to the firstV mentioned body section-a succession of advancingv blows by ¿virtue Vof» relative rotation between the sections„l .. " ~ ' ~ ' » Y . ce ‘ 5., Ina 'pipe swedge, a body adapted `to be in Vserted-„in `a pipe and comprisinga pair of relae ` shoulder 2l, see Fig. 3.v Thus as the body rotates tively rotatable sections, one of said sections being Ye5 relative to the sleeve, thelatteris subjected to Y adapted to engage and expand the pipe from col V65 a succession oi" downwardly'ap-plied '_blows, act, ing to drive` it between the collapsed walls ila of the casing and toV expand the latterV to the diameter of the upper, portion I5 of the sleeve. The casing then is rounded out to true circular A form by the action of the equally spaced rollers 3l whose outer peripheries travel a true circular path, V ~ |The provision for substantial relative longi tudinal movement between the sleeve l2 and V lapsed condition by advancement through Ythe pipe, rotatable drivingsmeans connected tofsaid body and adapted to cause said sections,k to` ro tate relatively, means for transmitting to- the first mentioned body section a succession of ad vancing blows by rotation of said driving means, and meansoperated >by the ¿driving means -for rounding out the pipe after it has been expanded by the first mentioned body section.A . e 6. In a »pipe swedge,Y a body adapted to »be 3 ` 2,096,234 inserted in a pipe and comprising a pair of rela tively rotatable sections, one of Vsaid sections being adapted to engage and expand the pipe from collapsed condition by advancement through the pipe, means carried by the other of said sec tions for rounding out the pipe, rotatable driving means connected to said body and adapted to cause said sections to rotate relatively, and means for transmitting to the first mentioned body sec tion a succession of advancing blows by virtue of relative rotation between the sections. '7. A pipe swedge comprising a body adapted to be inserted in a pipe, a mandrel extending axially from one end of said body, rotatable driv 15 ing means extending from the opposite end of the body, a swedge sleeve mounted on said man cession of advancing blows upon rotation relativeV thereto, >and means carried by said body 'for en gaging and rounding out the pipe. . 9. A pipe swedge comprising a body adapted to be inserted in a pipe and a mandrel extending axially vfrom one end of said body, rotatable driving means extending from the opposite end of the body, a swedge sleeve mounted on said mandrel and movable longitudinally and rotat ably relative to both the mandrel and body, inter 10 engaging annular cam surfaces on said body and sleeve having abrupt slip-oil shoulders, whereby the body imparts to the sleeve a succession of advancing blows upon rotation relative thereto, and a plurality of rollers carried in cìrcularly‘ 15 spaced recesses in the surface of said body. drel and movable longitudinally and rotatably 10. A pipe swedge comprising a body adapted tov relative to both the mandrel and body, and inter engaging annular cam surfaces on said body and be inserted in a pipe and a mandrel extendingy . sleeve having abrupt slip-01T shoulders, whereby axially from one end of said body, rotatable driv ing means extending from the opposite end of the 20 the body imparts to the sleeve a succession of ad vancing blows upon rotation relative thereto. 8. A pipe swedge comprising a body adapted body, a swedge sleeve mounted on said mandrel to be inserted in a pipe and a mandrel extending nular cam surfaces on said body and sleeve having ' axially from one end of said body, rotatable driving means extending from the opposite end of the body, a swedge sleeve mounted on said mandrel and movable longitudinally and rotat ably relative to both the mandrel and> body, in 'terengaging annular cam surfaces on said body and sleeve having abrupt slip-off shoulders, whereby the body imparts to the sleeve a suc and movable longitudinally and rotatably relative to both the mandrel and body, interengaging an abrupt slip-off shoulders, whereby the body im V25 parts to the sleeve a succession of advancing blows upon rotation relative thereto, a plurality of roll ers carried in circularly spaced recesses inthe surface of said body, and a roller retaining ring closing the ends of said recesses and secured to the body. . , WELDON C. ERWIN.