CA2354592A1 - Dual-drive winch system adapted for well logging applications - Google Patents
Dual-drive winch system adapted for well logging applications Download PDFInfo
- Publication number
- CA2354592A1 CA2354592A1 CA 2354592 CA2354592A CA2354592A1 CA 2354592 A1 CA2354592 A1 CA 2354592A1 CA 2354592 CA2354592 CA 2354592 CA 2354592 A CA2354592 A CA 2354592A CA 2354592 A1 CA2354592 A1 CA 2354592A1
- Authority
- CA
- Canada
- Prior art keywords
- drum
- winch system
- rotatably supported
- cradle
- drive
- 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.)
- Abandoned
Links
- 239000004020 conductor Substances 0.000 description 10
- 239000012530 fluid Substances 0.000 description 2
- XKZCXMNMUMGDJG-AWEZNQCLSA-N (2s)-3-[(6-acetylnaphthalen-2-yl)amino]-2-aminopropanoic acid Chemical compound C1=C(NC[C@H](N)C(O)=O)C=CC2=CC(C(=O)C)=CC=C21 XKZCXMNMUMGDJG-AWEZNQCLSA-N 0.000 description 1
- NTJHUKMPVIFDNY-XFDPNJHTSA-N (6r,7r)-7-[[(2z)-2-(5-amino-1,2,4-thiadiazol-3-yl)-2-methoxyiminoacetyl]amino]-3-(imidazo[1,2-b]pyridazin-4-ium-1-ylmethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid;chloride Chemical compound [Cl-].N([C@@H]1C(N2C(=C(CN3C4=CC=CN=[N+]4C=C3)CS[C@@H]21)C(O)=O)=O)C(=O)\C(=N/OC)C1=NSC(N)=N1 NTJHUKMPVIFDNY-XFDPNJHTSA-N 0.000 description 1
- FDQGNLOWMMVRQL-UHFFFAOYSA-N Allobarbital Chemical compound C=CCC1(CC=C)C(=O)NC(=O)NC1=O FDQGNLOWMMVRQL-UHFFFAOYSA-N 0.000 description 1
- 101100226769 Caenorhabditis elegans fax-1 gene Proteins 0.000 description 1
- 241000950314 Figura Species 0.000 description 1
- 101150106956 Oxtr gene Proteins 0.000 description 1
- 241000288726 Soricidae Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- 235000012976 tarts Nutrition 0.000 description 1
Classifications
-
- 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/008—Winding units, specially adapted for drilling operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/14—Power transmissions between power sources and drums or barrels
- B66D1/16—Power transmissions between power sources and drums or barrels the drums or barrels being freely rotatable, e.g. having a clutch activated independently of a brake
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/26—Rope, cable, or chain winding mechanisms; Capstans having several drums or barrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/30—Rope, cable, or chain drums or barrels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
Abstract
A winch system is disclosed which includes a first drum rotatably supported in a cradle, a second drum rotatably supported in the cradle axially alongside the first drum and rotatable independently of the first drum, and a drive system selectively connectible to the first drum and the second drum. In one embodiment, the first drum is rotatably supported at one end by a first bearing in one and of the cradle, the second drum is rotatably supported at one end by a second bearing in another end of the cradle, and the second drum is rotatably supported at another end by at least one bearing in a support bore in the first drum.
Description
JUL-30-01 MON 12:58 PM SPC IPL&C FAX N0. 2812858821 P. 02/14 ,.
DUAL-DRIVE 'WINCH SYSTEM AnAP~i'Ir:l) li't)lt ~VV~LLL
s )E3ACKCEtO'UND Oh' TI1~ TNVEN-T10I'~
ricld of the Invention '1'hc invention is related generally to the field of winches and spooling devices.
Maxc specifically, the invention relates to spooling device< whleh have more ih.rn crnu independently drivea.blo spool disposed in a, mounting space typically u~ad ('rrr x siylC
;;l,ool.
1)zscription of the Related Art Well lcagging systems kncfwn in the ;art inclu~lu a wutcla having a spool of annorcd electrical cable worn,d crn ~trc ajmul. '~?VGII lo~6iy iastrumcnts arc lowered into and lifted 1 S nnt. of welihores fur variuua yuyusc;s by rotating the spool (culled a "cable drum") to oxtr:ru and rctlact, respectively, the armored clcctrioal cable.
Amuorcd clcctrical cables for use in wvcll lofi~ing operations have a number of clcctrical conductors lhcrcin, and an extarnal diameter which are related to the tyre c~f logging, instwuncnts being used, the expected depth in the wellboro to whinh tl,c~
instruments arc to be louvered, and whether subsurfanp ronclitiarns in the wcllborc may require the use of fluid pressure contml devices flt tl,r E~,arttr'v surface.
Lo~gin~;
instruxnents which make srer;i:rllxarl mcasuremonls uflrruherlic;s ofthe carih formations penetrated by thL wellbore ofitc~n rc:dnirc multiylo W sulatcd olecirical conductors to carry electxieal power to C11B inslrrrrrre:nl.c frwcr tire caith's surface, and to transmit signals baelr to tl,c~ usartlr's aucCac;c lirr recording and interpretation. Typical ly, mufti-conductor cable h.~a :~ relatively llr~c wci~ht i~er unit lcn~th. As a. result, multi~
conductor cables lyrically have rz ~rolativety large cxicrnal diameter because of the amount of ~trn,orins 1't'qlrir~rl !c, provide adequate tensile strength to the cable.
Conversely, eir,ipic instruments, particularly "rcsrPnratlng" and otttcr nmclmuioal weilbore serviein~ devices, may only reclnirr .r tingle insulalcd clcctncal conductor to JUL-30-01 MON 12.59 PM SPC IPL&C FAX N0, 2812858821 P, 03/14 perform all required titnntinnc. 1?specially in the case of operating pet'fot'aiing device', various types of prr;ssure control devices arc uaCd ul tlm earth's surface.
Such prossurc control devices reclaim lhal Ilea caLle be "tl>scadcd throuEh" cable-diflmcter openings in than. A mcchanical/clcctrical coupling which connects the cable to the logging instruments, Icnown as a cable head" mt.est typically be coupled to the oahla after threading the cable through the nr~ningc in the pressure cott.tlol equiprncnt.
.As is well known in th.P Sri, ~Icctriaal cahles used with preSSUre control eqctiptncrtl lyl~iwlly lave as stutall tts practical an extema! diazrtutcr (OD) lu ieducc the tcndancy of tJ~c cable to be cximlled fiium the wcllbot~; when fluid treasure build; up inside the pressure control cquiptncot, Still othcrwell lagging cables include a single conductor, but h7ve a large Up and numerous armor wirca for operatic,ns requiring high breaking strength on The cable, such as tar cPtting mechanical devices io an unprcssurlzed wullburc, m wl~ea lifting r4latlvely heavy logging instrurztcttla vt~ 17c~ furating guns.
Frc;quently, well lugging opcrati9ns rccluirc using both larbe OD mufti-conductor, 1S or single conductor oablcs, and small OD single conductor cables in a single cot of operations. Somo well lobbing units hive two separate, indnPcndentty Qrlven cable drutrfi on than to flc~rnrmodate these aperatiorts. Such well logging units, wltilG cluitc eftoctivc, obvipusly have greater cost than 5ittt;lG-drum well loggias units because they have two eompleluly tILCICNCI I~Gllt witldl systC117S. Other well logging units 'k~wwn in the art havo a single winch drum which is "split". A split drum includes two exterior tlangsc on the axial outor ends of tho drum, and a third flange in a selected nxivl pnsitian hetwc:cn the ends of the drum. Split dnnrtc have wound thereon both types of logging cables 'u that the forgoing rnnlti-purpose w~:ll logging operaliutta uat~ Lei carried out, A limitation of shut dnttn wi.tteh systems is lhal vutlt cables rott~te simultaneously. IC
is necesNary to ZS rctuuve: the cable head from the unused cable during operations which r4quire ttso of the other cable, Irvun if the cable head need not be retrtoved in some c:rsrc, it may be desirable to already have the smaller (.)t7 rahle "threaded through" the pressure cantrul equipment to save time during operations at tile wellbore site. This is nul yussi'Llc on a split drum system while apc;ratiu~; lha winch dyna tA use the larger OD cnble.
34 What is mecdcd is a winch systcn~ which provides the space advantages of a snit drum, wrhilc cnttblin t; separate rotation of twvo different lagging c~hlP~_ JIJL-30-01 MON 12:59 PM SPC IPL&C FAX N0. 2812858821 P. 04/14 St>'1VIMALtY' OF T>KF'. llrT~JENTIO1~T
The invcntivn is a winch system Which irmludcs a first drum rotatably supportert in a madlc, a second drum rotatably srtpparlcacl iv the cradle axially alonbside tha fixst S cltum and rotFStablo independently of Llr4 first drura, and a drive systctn selearivcly connccti6le to the first drum anrl i.hc accoud drum. In one cntboditnent, the lir:;t ~lmv is rotatably stipponed at nn~ end by a first bearing in one end of the c~,racllc, the second drum is rotatably suppartcrl srt i711G Ctld by a second baarin~ in another c:ncl of the cr~dlc, and tho second dram is r~cuatably supported at another end by st least one bearity in a support lU bore in th.~ tir~;t dcunl.
1n one: vuLodinmnt, the drivr~ system is directly cxmlrlcd to the frrst drum and rr~rnhriscs au intcrloclc to rutatably evuple thN I ir~,t drum io the sceomd drum.
In another embodiment, the drive systurrc coirrpriscs a drive wembcr independently rot,~t.~.blc with rcsrE~r;l. to 111c firat drum and ihc second drmtt, .rncl a fast and t5 a second interlock each selectively uherablc to couple the first and seGand clrunis, rcspecitvely, to the drive nncrnlrcr.
In another emhoc9inmrrt, the drive sy'stctn comrriscs a first drive unt opcra6ly eounled to the .firct druttt atn a second drive unit operably eottpled lu tlco second dntm.
~U liRYl'C tl~SCIiIY'1'lON OF Tli>F 1~RAWINGS
t;igure 1 shows a cross-sectional view c~f une cmrbodimcnt of a dual-drive r~rinnh vystcut.
rigurc 2 shows the embodiment. of Figura 1 whore the twd drums may ratate independently, 25 rigurE 3 shows ttn sltemativC embodiment in which either the fircl. drutu of the second drum may be rlrivcrr individually by a single drive. unit.
Figure 4 shrew:. ucmthcr cmbodiincnt wherein the first drum and second dnun oaeh has its own drive unit, Figure S slows an cxElmplo of a dur~1 dnnn winul~ having iarproved Load carryini;
30 c:xpacity.
. ,~.~~..~.w~..~..~:~.~c,~,«w~.~.~..wwW
JUL-30-01 MON 12.59 PM SPC IPL&C FAX N0, 2812858821 P, 05/14 DETA1GED f7T:~CnTPTTON
t:.ener~lly arPaking, rhc~ invention is a winch system which includes two side-by side cable drums mounted in a cradle. The two ca.bIv drmns are to rutatC
iudop~n~leutly of each other, while being fit into a space otherwise adapted for a ginglc winch drum or a "split drum".
Onc entbodiznent of a dual-drum winch 10 according to tho invention is chnwn in Figure 1. A cradle 11 as sluawn in ?;il;nrP 1 ran hc~ the same or similar to those used to rotatably support a single cable drum or a split dman as are known in lltc hc~iur a~ l, Tlm cratllc 11 rutalal~ly supports a cable drum on bearifigs 20, 22. In this embodiment, the cable drum is a "dual" drum consisting of a first drum 12 and a ;second drum 14. A first cable 1t, and a second cable 1~ are spooled, raspectivcly, on first drum I2 and second drmn 14. The first dtvtn inchuies a First flange 12A sn~l a cec;nnrl t'13n2c l~ti to axially rE~.ctrain a, tint aahie 1 ci to be wound on the first drum 12. The second drum 14 inc;ludus siznilar flanges 14A, 14B to axially restrain a second lvk~,izy c~tLlo 18 to be wound on tha second drum 14.
The first drum 12 includes a bearing srindle 12C which at one end toms inside a support beacinb 20 in the cradle 11. The bearing 20 can be a rillnrxr hlnck aS
iS
C011Vf'.11('Iflnai Ivr rutatahle cable dntm mounting. The second dntm I4 also rotates about a spindle 14C which is supported in a bcaritag 22 in the; Uthcr ~tdC of tl~C
c~adlc 1 I. The suytmzl la~a~ing 22 eau also be a pillow block or similar type of bearing.
Second drum 1~1 is rotatably supported at the other end by at least one coaxial boaring 15.
Coaxial bearing 15 is disposed inside a support bore 12E in the interior of the first dnnn 17.. Practical embodizncnts at the invention may include n~nr~ non nnc coaxial bearing 15 in the sappart horn 12E, preferably separated by as much axial distance bctwcm i tl~Gm as practical. In tltis way,111C first rhu.jll 12 and the second drum 14 may rotrttc ilrlependcntly of each other while fitting in a conwcntional cr~idle 11, using bearings 20, 22, that are tyrieally usad for a sinble ar split drum winch t:ystem.
It should be clearly understood that the particrylar cnnfiguration shown ul rigure 1, which has ipindle 14C extend froto the second drum I4 into tho coiccspuitcliy alrNpo~t bore 12E in the f t~st drum 12, so that llzo (irac ~lzrun 12 can rotate a.boui the coaxial bearings 1 ~ is only one possible confi,g«ration of this. embodiment.
Alternatively, the JUL-30-01 MON 01.00 PM SPC IPL&C FAX 1~0, 2812858821 P. Of/14 ,,.
spindle 12C of the first drum 12 could o:~tond into a cprresponding support bare (not shown in Fignro I j in the: interior of the second d.rttm 14, wherein tho coaxial bearings 15 W0111Ci ~~ located. This is the Functional eCjLtlVillent OF the COtlfl,~ur~t~Ori Sh.OWl1117 Figure 1 and has the same advantages of that cc~ttfiguraliut~, wliiul~ will be Curtlt4r cxp1ai11cJ
below.
An advantage oFthe embodiment shown in rigurc 1 (and its alternativo as PxplainEd above) is that both the first drum 12 znd second drain 14 can tech have a cable passage (not shown is rigure 1). The cable passage is fanned, and terminates at ant end, substantially u1 1116 LCtltC1' UrIlIC rCS~GVI.IVL'pJ.Itt11145 12C, 14C. Thti cable; passage tcrtninatcs at its other end on the cylindrical surface that suplaolts tllc cabh; 1G, 18 wound on each drum 12, 1~t arld at tho boating end of the respective spindle 12C, 14C. Such cable passabes are typical for cable drums knawn in the art, arid the purpose of the cable passasc (not shown), as is known in the srt, is to provide a canriuit from the interiar cylindrical sut-face of the cable dmm to the center of a slip ring assembly, or "collector"
1 S assembly. The collector is typically mounted on the bearing end of the cradle 11. As is conventional for sl split dnmi winch, in the iaxdcpcndcntly rotatablc dlvtrl systclrl of this etmbodiment, the first drum 12 includes at the bearing end thereof a first collector 12D.
Correspondingly, the second dorm 14 inelndcs a soactnd c;ctlleci«r 141):ti.
i1v hc~arin~r ~n~i.
Both collectors 12D. 14D can be any suitaule type known in the alrt to enable electrical 2U couhlity between a rotatictg member and a rotationally taxed mmLc~. Im tl~i:~
ombodimcnt, as is conventional in the art, the rotationally fixed member is the cradle 11.
Other embodiments tn;~y have the spindle I~1~C of the second drum 1~! fully ' supported by both bearings 2U, 22 on the cradle I 1. In such embodiments, the first dmm 12 would include only the support bore llh, therein, and coaxial bearings 15, !t is else 2J~ 17US1ihlC tU ll:'1VC il .~'1)%IIIJIC WlllC:l1 L.xtlllll'u l7t~iWl:la1 bGi1r1I1~,'.9 2~ elllCt 22, ttIlC~ lb' et .y'GpilrittC
clement entirely fmm the first and sacor~d drun ~:~, 'J'he drama 12, 14 in such embodiments would rotate indcpcndently about tho spindlo on boarings in a support born in oath drum. Such embodimentc would require each drum to have a different form of pa5stlge for the cable wound thereon to be conducted to the respective collector.
30 In tl~u ombodime;nt of Figure 1, the first drum 12 is rotated by a drive system including a chain 28 and power unit 30. The chain 28 and power unit 30 can be any type ,IUL-30-01 MON 01.00 PM "aPC IPL&C FAX N0, 2812858821 P. 0/14 kmwn in the art. !n tiliS enlbad1111en1, the chain 28 and polder unit 30 arc the same as would be used to ClTIVe ii Sirl~.,'h: lh'uIIA uI' a~li! drum. This cmbadiocnt has the advantasc uCVCinx aIrIG to diioctly rchlacc a si~ylc drum or s~rlit drum in a drive ayslcrn and crodle already adapted to the sinl;ld drum or split dmu. 'fhe first drum 12 is stopped frosn rotatinfi by ,n first brske band 26. The first brake band 2G can be any tyro knr~wrn m the art for stepping a winch ctrnm. c:arreapondingly, the second drum 14 is stopped by a second brake band 24. In this embodiment, the brake bands 24, 2b can be the satttc as used iu a ~ilyv vl~~uor ur split drum winch, but the brake bands 2~4, 26 should bo adapted to be separately controllable to enable sep;~ralr~ rotation of the drums 12, 14.
1 A In this embodiment, only the f"trst drum !,2 is riri.ven by the ch..~in ?.i~ anti rc~wr~r unit 30. To drive the sPrrrnrt iln~m 14, in this embodituent, an interlock 3z iS engaged to ratztinnal ly couple the licst drum 12 to the Second drum 14. The interlock 32 in this et'nbodiment can br; a pin ur tliC IikG wlrialr ejtbascs corresponding holes in tlic flanges 14A, 148, 12I3 of the drums 14, 12 respectively. In Fi,~ure 1, the interlock pin 32 ie shown engaging tho eocond flank 121 an the f rst drum to couple rotation of the first drum 12 to the second drum 14.
't'hct same emhctdiment is shown in ri.gure 2 with the interlock 32 disenga,~~;d, su lhat the first drum 12 is driven by the ~iriw uiu! (cir~riu 28 and powcr-unit 3~0), while ihc se;curul drum 14 is not iotatcd. Typically the second brake band 24 will be set to stop 24 rotation ofthc sccolld drum 1~) whoa iho intcrlocl~ 3z is disenga~cd as showxr in Figure 2.
However, as the second drum 14 is othewise free to rotate, irrespPC.tivo nt'rntatian rif the first cin rm t o, t he 4yatcm nneratar n gay in sonic cases manually pull some of the sewed cable It3 from the second drum 14 to pvrfurta any activiliea which rosy require extending thL 54(:UilCl cable 1$.
It is cotrtcrrrpirrtcd that the emboditrent shown in Figures 1 arid 2 would be used where the first cablo 16 is a larbe diameter multiple conductor cable not requiring t.meouplin~ afa cable. ho;ut (not chnwn) to ''thread through" pressure control equiptxtent, The aecond cable is is eontetnplated as being a small diam~;tur axblG wltir:h eau Lv llricad thruu~;h prc;saur~ wrrUul equipment (not shown), and have coupled thereto a ecsble hood (not shown). In this way, the prcsyurc control cquipanent may be assembled to the second JUL-30-01 MON 01.00 PM SPC IPL&C FAX N0. 281288821 P, 08/14 cable 18 prior to use nl'I:hc winch system 10, W1111(: (ftJCl'~illOlls 1tS111~' the Frst drum 12 and i'irst af~hl~ I ~ tnay proceed uninlw r uptcd.
An altetnalivu CauLo~limc~~t of the winch uystem is s110wt11n Figure 3. )n the Cmboditncmt of ril,'urc 3, the chain 28 and power unit 3l1 arc rositioned So I:ha.t thu chaui is in between the f rst drum 12 and the scc,ona~l rirum L4. A drive sprockul 2$>3 is rot3tably supported on the spindle 14C by a bCat'inl; 28A. The drive sprocket 28B can be selectively co~rPled to either or both The first duucn 12 by a first intcrlocl~ 3211, which can be sirnllar to the interlock (32 in rigure 1) of the previous embodiment, and by ~ second inlcrluck 32B to the second drum 1 ~. In the embodin~cnt of tat~ure 3, either or both ~0 drums 12, 14 may be rotated, Yet another ewbodime~nt, shown 1r1 Figure 4, inclutlcs a first drive chain 28A
and first power unit '~(lA to operate the first dt'tum 12, and a second drive chain 28C and rnwEr unit 3013 to opcr<Zte lhc'ccund diem. In the embodiment of Figure A., the ~irnms 12, 14 m~~ty be npe;ralG~l completely separately, including in dittE~rcnt dirnetions. The e:mbodin~ent shown in rilure~ ~1 makes possible cn~Tlrinl; out well logging operaliuna un two wc:llbore~ simultaneously.
A particular e~mhoc3iment shown in f~i~urc S u~cludcs a ilu~ust bcprinS 3~1 disposed hc~tween the adjacent flztlgc;s 12B, 14A of the first drum 12 and second drum 14, respectlvoly, the cmUudimcnt shown in Figure S can haw improved load carrying c;~pacity. 1n some of the embodiments of the invention, such as shown in Fi~.iru 1, fv~
example, so~mc of the drum toad is cnrricd t,y the coaxial bearings (15 in riyrc 1).
Depending on 'the positirm and number of such beariys, llmrc nay still be some rasidual load applied sva a tarnue which is atpin ied i1i a direction to "twist" the axis of rotation of the drums 12, 14. SocuC of ibis load can be transferrod betvcrecn the diwmc by using the thrust Ge:aruy 34 between the adjacent drum flanges 12.H, t 4A. The thrust bezt'ing 34 ca.n be any type suitable Cor taking the thrust lo:tri between the flan gcs 128, 14A, for exumplo a roller bearing, ball hearing or torrirt.~ton (radial robot thmst) bearing. Tho embodirncnt shown in )r'igure 5 may also provide au additional bcncrt by reducing the load carrying clpaeifiy rctluircd on cash drum is the spindle area (or support hare area.) so that thu adjacent flanges l2Ci, 14A mny bo positioned closer tn the zxial outennusl cxk;nt ,.", JUL-80-01 MON 01~01 PM "aPC IPL&C FAX N0, 2812858821 P, 09/14 r :r of the corrcsronclin~ rimm 1 J, 14. '!'hv will rrovirle each dnttn 1?, 14 with some additional cable carrying capacity.
Tltc iuv~c;nlic~u lr~uvi~lCS a. winch ayslam which cmblcs upcrWin~ mvro than nn~
VYinch dr<lrtt separately from anotllcr ~,vinch drum, while maintaining the overall dirncnsions of sinble or split drum winch systems known in iho art. Tlio winch systc~nt of ihc~ invrnl inn may Prove nartiaularly useful in retrofitting single or split drum winch systems known itt the art without extensive modification to the In~in~ unit ahaccig or winch cr~salc;.
While the forcgoin~ invention has boon doscribod is terms of spocific cntbodirncnts, it ~.vill be readily apparent to those skilled in the tart that other embodiments of the invention can be devimd which do not depart from the spirit of the invention as disclosed herein. Accordingly, the invention shall he limited in scope only by the attached claims,
DUAL-DRIVE 'WINCH SYSTEM AnAP~i'Ir:l) li't)lt ~VV~LLL
s )E3ACKCEtO'UND Oh' TI1~ TNVEN-T10I'~
ricld of the Invention '1'hc invention is related generally to the field of winches and spooling devices.
Maxc specifically, the invention relates to spooling device< whleh have more ih.rn crnu independently drivea.blo spool disposed in a, mounting space typically u~ad ('rrr x siylC
;;l,ool.
1)zscription of the Related Art Well lcagging systems kncfwn in the ;art inclu~lu a wutcla having a spool of annorcd electrical cable worn,d crn ~trc ajmul. '~?VGII lo~6iy iastrumcnts arc lowered into and lifted 1 S nnt. of welihores fur variuua yuyusc;s by rotating the spool (culled a "cable drum") to oxtr:ru and rctlact, respectively, the armored clcctrioal cable.
Amuorcd clcctrical cables for use in wvcll lofi~ing operations have a number of clcctrical conductors lhcrcin, and an extarnal diameter which are related to the tyre c~f logging, instwuncnts being used, the expected depth in the wellboro to whinh tl,c~
instruments arc to be louvered, and whether subsurfanp ronclitiarns in the wcllborc may require the use of fluid pressure contml devices flt tl,r E~,arttr'v surface.
Lo~gin~;
instruxnents which make srer;i:rllxarl mcasuremonls uflrruherlic;s ofthe carih formations penetrated by thL wellbore ofitc~n rc:dnirc multiylo W sulatcd olecirical conductors to carry electxieal power to C11B inslrrrrrre:nl.c frwcr tire caith's surface, and to transmit signals baelr to tl,c~ usartlr's aucCac;c lirr recording and interpretation. Typical ly, mufti-conductor cable h.~a :~ relatively llr~c wci~ht i~er unit lcn~th. As a. result, multi~
conductor cables lyrically have rz ~rolativety large cxicrnal diameter because of the amount of ~trn,orins 1't'qlrir~rl !c, provide adequate tensile strength to the cable.
Conversely, eir,ipic instruments, particularly "rcsrPnratlng" and otttcr nmclmuioal weilbore serviein~ devices, may only reclnirr .r tingle insulalcd clcctncal conductor to JUL-30-01 MON 12.59 PM SPC IPL&C FAX N0, 2812858821 P, 03/14 perform all required titnntinnc. 1?specially in the case of operating pet'fot'aiing device', various types of prr;ssure control devices arc uaCd ul tlm earth's surface.
Such prossurc control devices reclaim lhal Ilea caLle be "tl>scadcd throuEh" cable-diflmcter openings in than. A mcchanical/clcctrical coupling which connects the cable to the logging instruments, Icnown as a cable head" mt.est typically be coupled to the oahla after threading the cable through the nr~ningc in the pressure cott.tlol equiprncnt.
.As is well known in th.P Sri, ~Icctriaal cahles used with preSSUre control eqctiptncrtl lyl~iwlly lave as stutall tts practical an extema! diazrtutcr (OD) lu ieducc the tcndancy of tJ~c cable to be cximlled fiium the wcllbot~; when fluid treasure build; up inside the pressure control cquiptncot, Still othcrwell lagging cables include a single conductor, but h7ve a large Up and numerous armor wirca for operatic,ns requiring high breaking strength on The cable, such as tar cPtting mechanical devices io an unprcssurlzed wullburc, m wl~ea lifting r4latlvely heavy logging instrurztcttla vt~ 17c~ furating guns.
Frc;quently, well lugging opcrati9ns rccluirc using both larbe OD mufti-conductor, 1S or single conductor oablcs, and small OD single conductor cables in a single cot of operations. Somo well lobbing units hive two separate, indnPcndentty Qrlven cable drutrfi on than to flc~rnrmodate these aperatiorts. Such well logging units, wltilG cluitc eftoctivc, obvipusly have greater cost than 5ittt;lG-drum well loggias units because they have two eompleluly tILCICNCI I~Gllt witldl systC117S. Other well logging units 'k~wwn in the art havo a single winch drum which is "split". A split drum includes two exterior tlangsc on the axial outor ends of tho drum, and a third flange in a selected nxivl pnsitian hetwc:cn the ends of the drum. Split dnnrtc have wound thereon both types of logging cables 'u that the forgoing rnnlti-purpose w~:ll logging operaliutta uat~ Lei carried out, A limitation of shut dnttn wi.tteh systems is lhal vutlt cables rott~te simultaneously. IC
is necesNary to ZS rctuuve: the cable head from the unused cable during operations which r4quire ttso of the other cable, Irvun if the cable head need not be retrtoved in some c:rsrc, it may be desirable to already have the smaller (.)t7 rahle "threaded through" the pressure cantrul equipment to save time during operations at tile wellbore site. This is nul yussi'Llc on a split drum system while apc;ratiu~; lha winch dyna tA use the larger OD cnble.
34 What is mecdcd is a winch systcn~ which provides the space advantages of a snit drum, wrhilc cnttblin t; separate rotation of twvo different lagging c~hlP~_ JIJL-30-01 MON 12:59 PM SPC IPL&C FAX N0. 2812858821 P. 04/14 St>'1VIMALtY' OF T>KF'. llrT~JENTIO1~T
The invcntivn is a winch system Which irmludcs a first drum rotatably supportert in a madlc, a second drum rotatably srtpparlcacl iv the cradle axially alonbside tha fixst S cltum and rotFStablo independently of Llr4 first drura, and a drive systctn selearivcly connccti6le to the first drum anrl i.hc accoud drum. In one cntboditnent, the lir:;t ~lmv is rotatably stipponed at nn~ end by a first bearing in one end of the c~,racllc, the second drum is rotatably suppartcrl srt i711G Ctld by a second baarin~ in another c:ncl of the cr~dlc, and tho second dram is r~cuatably supported at another end by st least one bearity in a support lU bore in th.~ tir~;t dcunl.
1n one: vuLodinmnt, the drivr~ system is directly cxmlrlcd to the frrst drum and rr~rnhriscs au intcrloclc to rutatably evuple thN I ir~,t drum io the sceomd drum.
In another embodiment, the drive systurrc coirrpriscs a drive wembcr independently rot,~t.~.blc with rcsrE~r;l. to 111c firat drum and ihc second drmtt, .rncl a fast and t5 a second interlock each selectively uherablc to couple the first and seGand clrunis, rcspecitvely, to the drive nncrnlrcr.
In another emhoc9inmrrt, the drive sy'stctn comrriscs a first drive unt opcra6ly eounled to the .firct druttt atn a second drive unit operably eottpled lu tlco second dntm.
~U liRYl'C tl~SCIiIY'1'lON OF Tli>F 1~RAWINGS
t;igure 1 shows a cross-sectional view c~f une cmrbodimcnt of a dual-drive r~rinnh vystcut.
rigurc 2 shows the embodiment. of Figura 1 whore the twd drums may ratate independently, 25 rigurE 3 shows ttn sltemativC embodiment in which either the fircl. drutu of the second drum may be rlrivcrr individually by a single drive. unit.
Figure 4 shrew:. ucmthcr cmbodiincnt wherein the first drum and second dnun oaeh has its own drive unit, Figure S slows an cxElmplo of a dur~1 dnnn winul~ having iarproved Load carryini;
30 c:xpacity.
. ,~.~~..~.w~..~..~:~.~c,~,«w~.~.~..wwW
JUL-30-01 MON 12.59 PM SPC IPL&C FAX N0, 2812858821 P, 05/14 DETA1GED f7T:~CnTPTTON
t:.ener~lly arPaking, rhc~ invention is a winch system which includes two side-by side cable drums mounted in a cradle. The two ca.bIv drmns are to rutatC
iudop~n~leutly of each other, while being fit into a space otherwise adapted for a ginglc winch drum or a "split drum".
Onc entbodiznent of a dual-drum winch 10 according to tho invention is chnwn in Figure 1. A cradle 11 as sluawn in ?;il;nrP 1 ran hc~ the same or similar to those used to rotatably support a single cable drum or a split dman as are known in lltc hc~iur a~ l, Tlm cratllc 11 rutalal~ly supports a cable drum on bearifigs 20, 22. In this embodiment, the cable drum is a "dual" drum consisting of a first drum 12 and a ;second drum 14. A first cable 1t, and a second cable 1~ are spooled, raspectivcly, on first drum I2 and second drmn 14. The first dtvtn inchuies a First flange 12A sn~l a cec;nnrl t'13n2c l~ti to axially rE~.ctrain a, tint aahie 1 ci to be wound on the first drum 12. The second drum 14 inc;ludus siznilar flanges 14A, 14B to axially restrain a second lvk~,izy c~tLlo 18 to be wound on tha second drum 14.
The first drum 12 includes a bearing srindle 12C which at one end toms inside a support beacinb 20 in the cradle 11. The bearing 20 can be a rillnrxr hlnck aS
iS
C011Vf'.11('Iflnai Ivr rutatahle cable dntm mounting. The second dntm I4 also rotates about a spindle 14C which is supported in a bcaritag 22 in the; Uthcr ~tdC of tl~C
c~adlc 1 I. The suytmzl la~a~ing 22 eau also be a pillow block or similar type of bearing.
Second drum 1~1 is rotatably supported at the other end by at least one coaxial boaring 15.
Coaxial bearing 15 is disposed inside a support bore 12E in the interior of the first dnnn 17.. Practical embodizncnts at the invention may include n~nr~ non nnc coaxial bearing 15 in the sappart horn 12E, preferably separated by as much axial distance bctwcm i tl~Gm as practical. In tltis way,111C first rhu.jll 12 and the second drum 14 may rotrttc ilrlependcntly of each other while fitting in a conwcntional cr~idle 11, using bearings 20, 22, that are tyrieally usad for a sinble ar split drum winch t:ystem.
It should be clearly understood that the particrylar cnnfiguration shown ul rigure 1, which has ipindle 14C extend froto the second drum I4 into tho coiccspuitcliy alrNpo~t bore 12E in the f t~st drum 12, so that llzo (irac ~lzrun 12 can rotate a.boui the coaxial bearings 1 ~ is only one possible confi,g«ration of this. embodiment.
Alternatively, the JUL-30-01 MON 01.00 PM SPC IPL&C FAX 1~0, 2812858821 P. Of/14 ,,.
spindle 12C of the first drum 12 could o:~tond into a cprresponding support bare (not shown in Fignro I j in the: interior of the second d.rttm 14, wherein tho coaxial bearings 15 W0111Ci ~~ located. This is the Functional eCjLtlVillent OF the COtlfl,~ur~t~Ori Sh.OWl1117 Figure 1 and has the same advantages of that cc~ttfiguraliut~, wliiul~ will be Curtlt4r cxp1ai11cJ
below.
An advantage oFthe embodiment shown in rigurc 1 (and its alternativo as PxplainEd above) is that both the first drum 12 znd second drain 14 can tech have a cable passage (not shown is rigure 1). The cable passage is fanned, and terminates at ant end, substantially u1 1116 LCtltC1' UrIlIC rCS~GVI.IVL'pJ.Itt11145 12C, 14C. Thti cable; passage tcrtninatcs at its other end on the cylindrical surface that suplaolts tllc cabh; 1G, 18 wound on each drum 12, 1~t arld at tho boating end of the respective spindle 12C, 14C. Such cable passabes are typical for cable drums knawn in the art, arid the purpose of the cable passasc (not shown), as is known in the srt, is to provide a canriuit from the interiar cylindrical sut-face of the cable dmm to the center of a slip ring assembly, or "collector"
1 S assembly. The collector is typically mounted on the bearing end of the cradle 11. As is conventional for sl split dnmi winch, in the iaxdcpcndcntly rotatablc dlvtrl systclrl of this etmbodiment, the first drum 12 includes at the bearing end thereof a first collector 12D.
Correspondingly, the second dorm 14 inelndcs a soactnd c;ctlleci«r 141):ti.
i1v hc~arin~r ~n~i.
Both collectors 12D. 14D can be any suitaule type known in the alrt to enable electrical 2U couhlity between a rotatictg member and a rotationally taxed mmLc~. Im tl~i:~
ombodimcnt, as is conventional in the art, the rotationally fixed member is the cradle 11.
Other embodiments tn;~y have the spindle I~1~C of the second drum 1~! fully ' supported by both bearings 2U, 22 on the cradle I 1. In such embodiments, the first dmm 12 would include only the support bore llh, therein, and coaxial bearings 15, !t is else 2J~ 17US1ihlC tU ll:'1VC il .~'1)%IIIJIC WlllC:l1 L.xtlllll'u l7t~iWl:la1 bGi1r1I1~,'.9 2~ elllCt 22, ttIlC~ lb' et .y'GpilrittC
clement entirely fmm the first and sacor~d drun ~:~, 'J'he drama 12, 14 in such embodiments would rotate indcpcndently about tho spindlo on boarings in a support born in oath drum. Such embodimentc would require each drum to have a different form of pa5stlge for the cable wound thereon to be conducted to the respective collector.
30 In tl~u ombodime;nt of Figure 1, the first drum 12 is rotated by a drive system including a chain 28 and power unit 30. The chain 28 and power unit 30 can be any type ,IUL-30-01 MON 01.00 PM "aPC IPL&C FAX N0, 2812858821 P. 0/14 kmwn in the art. !n tiliS enlbad1111en1, the chain 28 and polder unit 30 arc the same as would be used to ClTIVe ii Sirl~.,'h: lh'uIIA uI' a~li! drum. This cmbadiocnt has the advantasc uCVCinx aIrIG to diioctly rchlacc a si~ylc drum or s~rlit drum in a drive ayslcrn and crodle already adapted to the sinl;ld drum or split dmu. 'fhe first drum 12 is stopped frosn rotatinfi by ,n first brske band 26. The first brake band 2G can be any tyro knr~wrn m the art for stepping a winch ctrnm. c:arreapondingly, the second drum 14 is stopped by a second brake band 24. In this embodiment, the brake bands 24, 2b can be the satttc as used iu a ~ilyv vl~~uor ur split drum winch, but the brake bands 2~4, 26 should bo adapted to be separately controllable to enable sep;~ralr~ rotation of the drums 12, 14.
1 A In this embodiment, only the f"trst drum !,2 is riri.ven by the ch..~in ?.i~ anti rc~wr~r unit 30. To drive the sPrrrnrt iln~m 14, in this embodituent, an interlock 3z iS engaged to ratztinnal ly couple the licst drum 12 to the Second drum 14. The interlock 32 in this et'nbodiment can br; a pin ur tliC IikG wlrialr ejtbascs corresponding holes in tlic flanges 14A, 148, 12I3 of the drums 14, 12 respectively. In Fi,~ure 1, the interlock pin 32 ie shown engaging tho eocond flank 121 an the f rst drum to couple rotation of the first drum 12 to the second drum 14.
't'hct same emhctdiment is shown in ri.gure 2 with the interlock 32 disenga,~~;d, su lhat the first drum 12 is driven by the ~iriw uiu! (cir~riu 28 and powcr-unit 3~0), while ihc se;curul drum 14 is not iotatcd. Typically the second brake band 24 will be set to stop 24 rotation ofthc sccolld drum 1~) whoa iho intcrlocl~ 3z is disenga~cd as showxr in Figure 2.
However, as the second drum 14 is othewise free to rotate, irrespPC.tivo nt'rntatian rif the first cin rm t o, t he 4yatcm nneratar n gay in sonic cases manually pull some of the sewed cable It3 from the second drum 14 to pvrfurta any activiliea which rosy require extending thL 54(:UilCl cable 1$.
It is cotrtcrrrpirrtcd that the emboditrent shown in Figures 1 arid 2 would be used where the first cablo 16 is a larbe diameter multiple conductor cable not requiring t.meouplin~ afa cable. ho;ut (not chnwn) to ''thread through" pressure control equiptxtent, The aecond cable is is eontetnplated as being a small diam~;tur axblG wltir:h eau Lv llricad thruu~;h prc;saur~ wrrUul equipment (not shown), and have coupled thereto a ecsble hood (not shown). In this way, the prcsyurc control cquipanent may be assembled to the second JUL-30-01 MON 01.00 PM SPC IPL&C FAX N0. 281288821 P, 08/14 cable 18 prior to use nl'I:hc winch system 10, W1111(: (ftJCl'~illOlls 1tS111~' the Frst drum 12 and i'irst af~hl~ I ~ tnay proceed uninlw r uptcd.
An altetnalivu CauLo~limc~~t of the winch uystem is s110wt11n Figure 3. )n the Cmboditncmt of ril,'urc 3, the chain 28 and power unit 3l1 arc rositioned So I:ha.t thu chaui is in between the f rst drum 12 and the scc,ona~l rirum L4. A drive sprockul 2$>3 is rot3tably supported on the spindle 14C by a bCat'inl; 28A. The drive sprocket 28B can be selectively co~rPled to either or both The first duucn 12 by a first intcrlocl~ 3211, which can be sirnllar to the interlock (32 in rigure 1) of the previous embodiment, and by ~ second inlcrluck 32B to the second drum 1 ~. In the embodin~cnt of tat~ure 3, either or both ~0 drums 12, 14 may be rotated, Yet another ewbodime~nt, shown 1r1 Figure 4, inclutlcs a first drive chain 28A
and first power unit '~(lA to operate the first dt'tum 12, and a second drive chain 28C and rnwEr unit 3013 to opcr<Zte lhc'ccund diem. In the embodiment of Figure A., the ~irnms 12, 14 m~~ty be npe;ralG~l completely separately, including in dittE~rcnt dirnetions. The e:mbodin~ent shown in rilure~ ~1 makes possible cn~Tlrinl; out well logging operaliuna un two wc:llbore~ simultaneously.
A particular e~mhoc3iment shown in f~i~urc S u~cludcs a ilu~ust bcprinS 3~1 disposed hc~tween the adjacent flztlgc;s 12B, 14A of the first drum 12 and second drum 14, respectlvoly, the cmUudimcnt shown in Figure S can haw improved load carrying c;~pacity. 1n some of the embodiments of the invention, such as shown in Fi~.iru 1, fv~
example, so~mc of the drum toad is cnrricd t,y the coaxial bearings (15 in riyrc 1).
Depending on 'the positirm and number of such beariys, llmrc nay still be some rasidual load applied sva a tarnue which is atpin ied i1i a direction to "twist" the axis of rotation of the drums 12, 14. SocuC of ibis load can be transferrod betvcrecn the diwmc by using the thrust Ge:aruy 34 between the adjacent drum flanges 12.H, t 4A. The thrust bezt'ing 34 ca.n be any type suitable Cor taking the thrust lo:tri between the flan gcs 128, 14A, for exumplo a roller bearing, ball hearing or torrirt.~ton (radial robot thmst) bearing. Tho embodirncnt shown in )r'igure 5 may also provide au additional bcncrt by reducing the load carrying clpaeifiy rctluircd on cash drum is the spindle area (or support hare area.) so that thu adjacent flanges l2Ci, 14A mny bo positioned closer tn the zxial outennusl cxk;nt ,.", JUL-80-01 MON 01~01 PM "aPC IPL&C FAX N0, 2812858821 P, 09/14 r :r of the corrcsronclin~ rimm 1 J, 14. '!'hv will rrovirle each dnttn 1?, 14 with some additional cable carrying capacity.
Tltc iuv~c;nlic~u lr~uvi~lCS a. winch ayslam which cmblcs upcrWin~ mvro than nn~
VYinch dr<lrtt separately from anotllcr ~,vinch drum, while maintaining the overall dirncnsions of sinble or split drum winch systems known in iho art. Tlio winch systc~nt of ihc~ invrnl inn may Prove nartiaularly useful in retrofitting single or split drum winch systems known itt the art without extensive modification to the In~in~ unit ahaccig or winch cr~salc;.
While the forcgoin~ invention has boon doscribod is terms of spocific cntbodirncnts, it ~.vill be readily apparent to those skilled in the tart that other embodiments of the invention can be devimd which do not depart from the spirit of the invention as disclosed herein. Accordingly, the invention shall he limited in scope only by the attached claims,
Claims (10)
1. A winch system, comprising:
a first drum rotatably supported in a cradle;
a second drum rotatably supported in the cradle axially alongside, substantially coaxial with and rotatable independently of the first drum; and a drive system selectively connectible to the first drum and the second drum.
a first drum rotatably supported in a cradle;
a second drum rotatably supported in the cradle axially alongside, substantially coaxial with and rotatable independently of the first drum; and a drive system selectively connectible to the first drum and the second drum.
2. The winch system as defined in claim 1 wherein the drive system is directly coupled to the first drum and comprises an interlock to rotationally couple the first drum the the second drum.
3. The winch system as defined in claim 2 wherein the second drum has wound thereon a cable adapted to be used with well logging pressure control equipment.
4. The winch system as defined in claim 1 wherein the drive system comprises a drive member independently rotatable with respect to the first drum and the second drum, and a first and a second interlock each selectively operable to couple the first and second drums, respectively, to the drive member.
5. The winch system as defined in claim 1 further comprising a first brake adapted to selectively stop rotation of the first drum and a second brake adapted to selectively stop rotation of the second drum.
6. The winch system as defined in claim 1 wherein the first drum is rotatably supported at one end by a first bearing in one end of the cradle, the second drum is rotatably supported at one end by a second bearing in another end of the cradle, and the second drum is rotatably supported at another end by at least one coaxial bearing in a support bore in the first drum.
7. The winch system as defined in claim 1 wherein the second drum is rotatably supported by a spindle mounted in a bearing in each side of the cradle, and the first drum is rotatably supported bearings disposed in a support bore therein coaxially disposed about the spindle.
8. The winch system as defined in claim 1 wherein the first drum comprises a first collector and the second drum comprises a second collector, the first and second collector each adapted to provide electrical contact between the respective rotating drum and a rotationally fixed member.
9. The winch system as defined in claim 1 wherein the drive system comprises a first drive unit operably coupled to the first drum and a second drive unit operably coupled to the second drum.
10. The winch system as defined in claim 1 further comprising a thrust bearing disposed between adjacent flanges of the first drum and the second drum.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US63123500A | 2000-08-02 | 2000-08-02 | |
| US09/631,235 | 2000-08-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2354592A1 true CA2354592A1 (en) | 2002-02-02 |
Family
ID=24530326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2354592 Abandoned CA2354592A1 (en) | 2000-08-02 | 2001-08-01 | Dual-drive winch system adapted for well logging applications |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1178007A1 (en) |
| CN (1) | CN1337354A (en) |
| AU (1) | AU5776901A (en) |
| CA (1) | CA2354592A1 (en) |
| NO (1) | NO20013772L (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7644907B2 (en) | 2006-12-28 | 2010-01-12 | Schlumberger Technology Corporation | Drum for a well access line |
| GB0714880D0 (en) * | 2007-07-31 | 2007-09-12 | Expro North Sea Ltd | Winch assembly |
| WO2015181841A1 (en) | 2014-05-28 | 2015-12-03 | Kite Gen Research S.R.L. | Apparatus for converting mechanical energy into electric energy |
| EP3075946B1 (en) | 2015-03-30 | 2019-05-08 | National Oilwell Varco Norway AS | Draw-works and method for operating the same |
| CN106058742B (en) * | 2016-07-28 | 2017-11-14 | 西安石竹能源科技有限公司 | A kind of hard cable injected system |
| CN110092288B (en) * | 2019-06-05 | 2024-01-09 | 上海建工四建集团有限公司 | Multi-layer shear wall reinforcement cage hoisting system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4024935A (en) * | 1975-07-08 | 1977-05-24 | Kabushiki Kaisha Komatsu Seisakusho | Power transmission in double-drum winch |
| FI885695A (en) * | 1988-12-08 | 1990-06-09 | Tampella Oy Ab | SLANG- OCH KABELTRUMANORDNING VID BERGBORRNINGSANORDNING. |
| IT1249750B (en) * | 1991-01-10 | 1995-03-17 | Amos Vignali | DOUBLE ENGINE-WINCH UNIT. |
| DE4302018C2 (en) * | 1993-01-26 | 2002-07-18 | Terex Germany Gmbh & Co Kg | Cable winch, in particular for a tower crane provided with a hoisting rope and a separate assembly rope |
-
2001
- 2001-08-01 EP EP01610082A patent/EP1178007A1/en not_active Withdrawn
- 2001-08-01 CA CA 2354592 patent/CA2354592A1/en not_active Abandoned
- 2001-08-01 NO NO20013772A patent/NO20013772L/en unknown
- 2001-08-02 CN CN 01132870 patent/CN1337354A/en active Pending
- 2001-08-02 AU AU57769/01A patent/AU5776901A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| CN1337354A (en) | 2002-02-27 |
| AU5776901A (en) | 2002-02-07 |
| NO20013772L (en) | 2002-02-04 |
| NO20013772D0 (en) | 2001-08-01 |
| EP1178007A1 (en) | 2002-02-06 |
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