US2440009A - Drill pipe protector applying and installing apparatus - Google Patents

Drill pipe protector applying and installing apparatus Download PDF

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US2440009A
US2440009A US361736A US36173640A US2440009A US 2440009 A US2440009 A US 2440009A US 361736 A US361736 A US 361736A US 36173640 A US36173640 A US 36173640A US 2440009 A US2440009 A US 2440009A
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Prior art keywords
protector
holder
drill pipe
pipe
sleeve
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US361736A
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Adelbert M Graham
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Thermoid Co
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Thermoid Co
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/10Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/12Devices for placing or drawing out wear protectors
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/53Means to assemble or disassemble
    • Y10T29/53657Means to assemble or disassemble to apply or remove a resilient article [e.g., tube, sleeve, etc.]
    • Y10T29/53665Well protector to sucker rod

Definitions

  • My invention relates to methodand means for applying expansible annular protectors to drill pipe or other members which are to be employed in a well.
  • the invention to provide a method and apparatus whereby the drill pipe protectors are expanded at a plant or location selected for this operation, are transported 5 in expanded condition to the well or wells and thereat placed upon and allowed to contract upon and they are individually placed in or connected to a simple applying device which is operative to remove the protectors from the holders so that the protectors my contract upon and around sethe external diameter of the pipe so that the prolected portions or the drill pipe to be protected.
  • the further object of the invention is to provide a protector applying device which may be readily transported to a desired location, this applying device having means for receiving a proeffect. It will be recognized that 9. correspondtector unit comprising a holder with an expanded ingly heavy force is required to expand these protectors so as to place them upon the drill pipe.
  • correspondtector unit comprising a holder with an expanded ingly heavy force is required to expand these protectors so as to place them upon the drill pipe.
  • Rubber drill pipe protectors are customthe specification wherein I have shown the broad arily applied to the drill pipe in the derrick, prior to the making up of the continuous drill pipe string and accordingly it is necessary to transport the relatively heavy equipment. often over a concept of my invention embodied in the details or construction of a selected apparatus for the practice or the invention.
  • FIG. 1 is a partly sectioned view showing the protector expanding device forming a part or my invention.
  • Fig. 2 is a cross section taken as indicated by tectors and then applying them-to the pipe. '55 the line 2-2 of Fig. l.
  • Fig. 3 is an enlarged elevational view showing that part my invention constituting an article of commerce comprising an expanded drillpipe protector on a holder.
  • Fig. 4 is a partly sectioned view showing the holder and expanded protector in place in the applying device which forms a partoi. my present invention.
  • Fig. 5 is an enlarged sectional view oithe applying device shown in Fig. 4.
  • Fig. 6 is a plan view corresponding to Fig.5.
  • Fig. '7 is an enlarged fragmentary sectional view of the area indicated y he circle 1 of Fig. 5 showing an adaptor insert of diflerent size in use.
  • Fig. 8 is an enlarged fragmentary section taken as indicated by the line 8-4 of Fig. 5.
  • Fig. 9 is an enlarged sectional viewrof an alternative form or applying device expressly suited for use in removing large size protectors from their holders.
  • Fig. 10 is a fragmentary partly sectioned plan view of the device shown in Fig. 9.
  • FIG. 1 I show my expanding device it with a drill pipe protector II on the holding mandrel l2 in readiness for, expansion and placement on a, cylindric holder or sleeve [2 carried in operative position by an adaptor 14 disposed at the upper end of the tubular support l5 which is moimted on a swingable platform 18 supported by the base II or the expanding device [0.
  • The'expanding device It may be constructed in accordance with the details disclosed in my copending application, Serial No. 346,615, and in- 1 cludes a .pusher element l8 which operates in a guide i9 to forcibly move downward around the mandrel l2 a protector 20 in pusher position, so that the protector II will be forced down over an expanding cone to a position on the holder is indicated by dotted lines II.
  • the cylindric holder 13 is a separate unit which is employed in multiplicate so'that any desired number of the protectors ll may be expanded and placed upon a corresponding number oi! holders, the holders IS with the expanded protectors ll thereon then constituting articles or commerce which may be transported as required from their place of assembly or manufacture.
  • FIG. 3 I show another holder [2 with an expanded protector ll thereon, the member II and I2 constituting which may be referred to as a protector unit 22.
  • FIG.4I showaprotectorunit22inplaceinan applying device 22 supported above a rotary machine table 24 so as to surround a drill pipe 25 and to hold the protector unit 22 in a position surrounding the drill pipe 2
  • Each cylindric holder l2 has means whereby 'it may be connected in cooperating relation to the support 22. consisting of parts ll, II, and l2 tubular support II which is also provided in multiplicate to take care of diflerent conditions of operation.
  • the platform It is shown-with an extending arm 20 having pivotal engagement with one 01' the vertical'bars 2i oi the expanding device, and has. a lever 22 whereby it may be swung in clockwise direction from its position of Fig. 2, to carry the support 22 out to one side of the expanding-device It. for coiivenience'in placing the holders l2 on the support "and subsequently removing them;
  • is also provided in multiplicate inaccordance with diflerent diameters. of holders l2, and
  • the applying device 22 comprises a cylindrical wall or sleeve 22 having the shoulder 31 at the upper'endthereot, and in such position that when a protector unit 22 is installed in the applying device 22 in the position shown, the shoulder 2'! will lie in a position surrounding the lower part of 'the holder l2 and below the lower end or the protector H.
  • the applying device 22 has means for producing relative axial movement or the shoulder 21 and the holder l2 to accomplish separation of the protector l I and the holder l2.
  • the shoulder 21 is maintained stationary and the holder I2 is pulled downward from the posicontract around and upon that portion of thedrill pipe lying within the guard 22 which comprises a cylindric wall projecting upward from the periphery of the shoulder 21.
  • the means which I have provided for pulling the holder i2 downward out of the protector ll includes an adaptor ring 28 ot a size to receive thelower portion of the. holder 12 and having bayonet notches 40 therein for interlocking engagement with the arcuate' lugs 21 oi! the holder l2.
  • the adaptor ring 22 is detachably secured in the upper end of a cylindric wall ll, smaller than and slidable within the'cylinder 26.
  • the lower portion of the wall ll projects through packing means 42 held at the lower end oi the cylinder 26 and is connected to an annular piston '42 which is slidable in a cylinder 44 oi.
  • a tour way valve 42 is rotatably held in a casing 42 having a port III which communicates withthe annular space 5
  • a pressure fluid pipe 62 communicates with-one side of the casing 49, andthe fluid return pipe SI leads out from another part oithe casing 42.
  • FIG. '7 I show an adaptor ring 39' of smaller internal diameter than the adaptor ring 39, to receive the lower end of a holder [3a of smaller diameter than the holder I 3 as shown in Fig. 5.
  • the adaptor ring 39 is the same as the adaptor ring 39. It is threaded at 6 expanded.
  • the single expanding device. employed at a central location may serve a plurality of apply ng devices 22, employed at widely separated locations.
  • a preferred manner of use of the invention isas follows: A selected number of protector units 22, Fig. 3, are made up by use of the expanding device I. As explained in the foregoing, the holders l3 for these units are individually placed on the support 26 of the expanding device Ill and the protectors Ii are expanded and placed thereon. A selected or required number of these units are transported to the location of the pipe to be protected, for example the derrick of a. well having suitable hoisting equipment for the pipe.
  • the applying device 23 which is a relatively light piece of equipment, is also taken to the location of the pipe, and in conjunction with suitable handling Of the pipe the protector units 22 are individually placed in the applyin device 23 and are transferred to the pipe.
  • a convenient and acceptable practice is to employ the applying device 23 in a position above the rotary table 24 --flning an opening I3.
  • the pipe 25, Fig. 4 may be lowered therethrough to a desired position relative to the protector unit 22.
  • the protector unit 22 is first placed within the guard 38 and is engaged with the adaptor ring 39 after which the drill pipe 25 is lowered through the protector unit 22 and the applying device 23.
  • the handle 62- thereof the workmen hold the applying device 23 in a position raised from the rotarytable 24. Fluid pressure is then applied to the space ii to pull the holder I3 down out of the protector I I.
  • An advantage of the invention is that there is minimum delay in applying the protectors II to the drill pipe 25, since the protector units 22 may be placed consecutively in the applying device 23 as fast as the operations are conducted without the necessity of waiting for a protector to be equipment to the location of the well, and also avoids the delay occasioned by the necessity of individually the protectors onto the support of an applying device while the pipe handling crew stands idle.
  • the present method disclosed herein saves more than half of the time formerly required for the placing of protectors on a drill pipe by use of equipment such as shown in my co-pending application above referred to.
  • FIG. 9 and 10 I provide an inner cylinder 10 having an outwardly projecting flange H at its upper end and an inwardly projecting flang 12 at its lower end,- this lower flange de-
  • an outer cylinder 14 is placed, which outer cylinder ll has a flange II secured tothe flange H at the upper end of the inner cylinder It.
  • the outer cylinder II is larger than'the inner cylinder 10 and an annular cylinder space 16 is formed therein in which an annular piston I1 is movable.
  • 'I'heannular piston II has packing means I8 and I9 to respectively engage inner and outer cylinders Ill and I4.
  • a cyllndrlc wall I! extends downward from the annular piston 11 in sliding contact with the cylinder II, and at the lower end thereof which projects below the lower end of the cylinder 10 the cylindricwall I has an inwardly projecting flange 82 in which an adaptor ring 82 is secured.
  • the lower end of the outer cylinder 14 carries an annular wall II which closes. the lower end of the cylinder space It and carries packing means 85 to cooperate with the external surface of the cylindric wall II.
  • the upper flange ll of the inner cylinder II has a projection 81, and a passage 8
  • the lower end of the outer cylinder 14 has a projection 28 thereon in which there is formed a passage 8
  • a four way valve ll as shown in Fig. 9, has two of its ports connected by piping 82 and I: with the passages It and SI, and as shown in Hg.
  • and a return pipe as are respectively con- 7 nected to the remaining ports of the valve Oi.
  • the valve ti when the valve ti is manipulated so as to direct the pressure fluid through the passage 80 into the upperend of the cylinder space ll, the pressure thereof will force the annular piston l1 downward, with the result that the holder II of the protector assembly 22 will be moved downward.
  • the expanded protector. ll of the protector unit 22 enga es the flange II it will be held stationary and downward movement of the holder i3 will result in its being pulled from the interior of the expanded protector ii where upon the protector ll may contract around a pipe. extended through the holder II.
  • the return of the piston I1 and its associated parts to the initial position thereof shown in Fig. 9 may be accomplished by manipulating the valve ll so as to direct the pressure fiuid through the passage to so that the pressure thereof will be exerted against the lower face of the annular piston I.
  • annular cylinder and piston means defining an opening to receive the drill pipe which is to be protected; a support connected to one of said means, said support having parts to lock said holder thereto; an annular shoulder connected to the other of said means, to confront an end of said protector when the holder on which it is mounted is locked to said support; and means to apply fluid pressure to said cylinder and piston means to produce relative movement of said support and said shoulder to separate said protector and said holder.
  • a drill pipe protector applying device for separating expanded protectors fromcylindric holders, the combination of: a pair of annular walls disposed in axially movable relation and each slidably engaging the other and defining an opening to receive the drill pipe which is to be protected; a support connected to one of said walls, said support having parts to lock one of said holders thereto; an annular shoulder connected to the other of said walls, to confront an end of one of said protectors when the. holder on which it is mounted is locked to said support; and means to apply relative axial movement to said walls whereby pressure of said shoulder against said protector and movement of said holder will separate said holder and said protector.
  • a drill pipe protector applying device for separating an expanded protector from a cylindric holder, the combination of: double acting annular cylinder and piston means defining an opening to receive the drill pipe which is to be protected; a support connected to one of said means, said support having parts to lock said holder thereto; an annular shoulder connected to the other of said means, to confront an end of said protector when the holder on which it is mounted is locked to said support;
  • a drill pipe protector applying device for separating an expanded protector from a cyiindric holder, the combination of inner and outer cylindric walls defining an annular cylin- 8 dc; space closedat one end and open at the other.
  • saidinner cylindric wall having an inwardly projecting shoulder defining an opening: an annular piston in said annular cylinder space; means extending from said piston throlli said open end of said cylinder space, said means comprising parts for engaging an end of a holder situated within said inner cylindric wall with said' end thereof projecting through said opening defined by said shoulder; and means to apply fluid pressure to-said annular cylinder space to move said piston so as to carry said parts away from said shoulder and pull said holder through said opening.
  • annular cylinder and piston means defining an opening to receive the drill pipe which is to be protected; a support connected to one of said means, said support having parts to engage said locking member of said holder thereto; an annular shoulder connected to the other of said means, to confront an end of said protector when the holder on which it is mounted is locked to said support, said annular shoulder defining an opening of such size that said locking member of said holder may pass therethrough.

Description

W 0, 1948. A. M. GRAHAM 2,440,009
DRILL PIPE PROTECTOR APPLYING AND INSTALLING' APPARATUS Filed Oct. 18, 1940 4 Sheets-Sheet 1 I r I l I my 0702: 8
' ATTOQNEK April 1943- I A. M. GRAHAM 2,440,009
DRILL PIPE PROTECTOR APPLYING AND INSTALLING APPARATUS Filed Oct. 18, 1940 4 Sheets-Sheet 2 0 582 :58 22 a 0 4 H H 3 I A 7' 7' Ole/YE K April 20, 1948. A. M. GRAHAM DRILL PIPE PROTECTOR APPLYING AND INSTALLING APPARATUS Filed Oct. 18, 1940 4 Sheets-Sheet 3 nroz;
April 20, 1948. A. M. GRAHAM 2,440,009
DRILL PIPE PROTECTOR APPLYING AND INSTALLING APPARATUS Filed Oct. 18, 1940 4 Sheets-Sheet 4 Arrae/rer.
Patented Apr. 20, 1948 2,440,009 DRILL PIPE PROTECTOR APPLYING INSTALLING APPARATUS Adelhert m. Graham, Beverly mm, can.. as-
aignor, by meme assignments, Company, Trenton, N. 1., a corporation of Dela- Application October is, 1940', Serial No. 381,736 '11 Claims. (c1. za-m) My invention relates to methodand means for applying expansible annular protectors to drill pipe or other members which are to be employed in a well. I
As example of the utility or my invention, its use in conjunction with the rotarysystem otwell drilling will be explained. In rotary well drillin a drilling tool is secured to the lower end (or a string of pipe androtation is transmittedfrom a rotary machine at the top of the well through the drill pipe to the tool. To reduce wear on the drill pipe and also on the metal wall of such casing as may be installed in the well, and also to act as centralizing means for the drill pipe, it is now a practice to place on the drill pipe at suitable intervals protectors comprising annular bodies of resilient and yleldable material, such as rubber or rubber compound. These protectors are molded with their internal diameter smaller than It is a further object oi. the invention to provide a method and apparatus whereby the drill pipe protectors are expanded at a plant or location selected for this operation, are transported 5 in expanded condition to the well or wells and thereat placed upon and allowed to contract upon and they are individually placed in or connected to a simple applying device which is operative to remove the protectors from the holders so that the protectors my contract upon and around sethe external diameter of the pipe so that the prolected portions or the drill pipe to be protected.
tectors must be stretched in order to apply them to the drill pipe, the result being that tension acting in the walls or the protectors will cause them to tightly grip the pipe. 80 as to minimize the It is an object of the invention to provide as an article or manufacture an expanded drill pipe protector held upon a holder equipped for cooperation with a device for removing the protector possibility of the protectors slipping over 'couas from the holder.
plings and tool joints forming a part of thedrill string,it is desirable to so make these protectors that the tension forces acting therein will be quite large so as to produce a near maximum gripping.
The further object of the invention is to provide a protector applying device which may be readily transported to a desired location, this applying device having means for receiving a proeffect. It will be recognized that 9. correspondtector unit comprising a holder with an expanded ingly heavy force is required to expand these protectors so as to place them upon the drill pipe. In my co-pending application for Drill pipe protector applicator, Serial No. 346,615, filed July 20,
protector thereon and having means ior removing the expanded protector from the separate protector holder so that the protector will be allowed to contract around a selected portion of a drill 1940, issued 1380.1, 1942, as Patent No. 2,303,689, pipe, and it is also an object of the invention to I have disclosed power operated apparatus for stretching drill pipe protector and for placing the same at selected positions on a drill pipe. This apparatus is quite heavy and involves considerable expense in the manufacture thereof.
It is an object of my present invention to improve methods and apparatus for applying protectors to drill pipe, of the general character disclosed in my co-pending application above idenprovide as a means for applying drill pipe protectors to drill pipe, a protector applying device and a plurality of holders to cooperate therewith whereby the holders with the protectors thereon may be consecutively brought into juxtaposition with the operating mechanism of the applying device.
Further objects and advantages or the invention will be brought out in the following part of tified. Rubber drill pipe protectors are customthe specification wherein I have shown the broad arily applied to the drill pipe in the derrick, prior to the making up of the continuous drill pipe string and accordingly it is necessary to transport the relatively heavy equipment. often over a concept of my invention embodied in the details or construction of a selected apparatus for the practice or the invention.
Referring to drawings which are for illustrative considerable distance, to the derrick or the well so purposes only:
in which the string of drill pipe is to be used. My present invention makes it possible to reduce the amount of equipment which must be transported to the wellfor purpose or stretching the pro- Fig. 1 is a partly sectioned view showing the protector expanding device forming a part or my invention.
Fig. 2 is a cross section taken as indicated by tectors and then applying them-to the pipe. '55 the line 2-2 of Fig. l.
to the location, generally the derrick of a well, I
Fig. 3 is an enlarged elevational view showing that part my invention constituting an article of commerce comprising an expanded drillpipe protector on a holder.
Fig. 4 is a partly sectioned view showing the holder and expanded protector in place in the applying device which forms a partoi. my present invention.
Fig. 5 is an enlarged sectional view oithe applying device shown in Fig. 4.
Fig. 6 is a plan view corresponding to Fig.5.
Fig. '7 is an enlarged fragmentary sectional view of the area indicated y he circle 1 of Fig. 5 showing an adaptor insert of diflerent size in use. a
Fig. 8 is an enlarged fragmentary section taken as indicated by the line 8-4 of Fig. 5.
Fig. 9 is an enlarged sectional viewrof an alternative form or applying device expressly suited for use in removing large size protectors from their holders.
Fig. 10 is a fragmentary partly sectioned plan view of the device shown in Fig. 9.
In Fig. 1 I show my expanding device it with a drill pipe protector II on the holding mandrel l2 in readiness for, expansion and placement on a, cylindric holder or sleeve [2 carried in operative position by an adaptor 14 disposed at the upper end of the tubular support l5 which is moimted on a swingable platform 18 supported by the base II or the expanding device [0.
The'expanding device It may be constructed in accordance with the details disclosed in my copending application, Serial No. 346,615, and in- 1 cludes a .pusher element l8 which operates in a guide i9 to forcibly move downward around the mandrel l2 a protector 20 in pusher position, so that the protector II will be forced down over an expanding cone to a position on the holder is indicated by dotted lines II. The cylindric holder 13 is a separate unit which is employed in multiplicate so'that any desired number of the protectors ll may be expanded and placed upon a corresponding number oi! holders, the holders IS with the expanded protectors ll thereon then constituting articles or commerce which may be transported as required from their place of assembly or manufacture. In Fig. 3 I show another holder [2 with an expanded protector ll thereon, the member II and I2 constituting which may be referred to as a protector unit 22. InFig.4Ishowaprotectorunit22inplaceinan applying device 22 supported above a rotary machine table 24 so as to surround a drill pipe 25 and to hold the protector unit 22 in a position surrounding the drill pipe 2| and in such position that the operation of the applyin device 22 will result in the transfer of the protector II from the holder I2 onto the surface of the drill pipe 25.
Each cylindric holder l2 has means whereby 'it may be connected in cooperating relation to the support 22. consisting of parts ll, II, and l2 tubular support II which is also provided in multiplicate to take care of diflerent conditions of operation. The platform It is shown-with an extending arm 20 having pivotal engagement with one 01' the vertical'bars 2i oi the expanding device, and has. a lever 22 whereby it may be swung in clockwise direction from its position of Fig. 2, to carry the support 22 out to one side of the expanding-device It. for coiivenience'in placing the holders l2 on the support "and subsequently removing them; The "expanding cone 2| is also provided in multiplicate inaccordance with diflerent diameters. of holders l2, and
. this come 2| has a shoulder 22 at its lower end of Fig. 1, and whereby it may be connected in operating relation to the applying device 22, Fig. 4. Such means oi. operative connection- I have shown as arcuate lugs 21, Fig. 3. projecting from the lower end 01' the cylindric wall 22 01' the holder [3. The adaptor ring ll, Fig. 1, has therein bayonet notches 28 to receive the lu s 21 when ring it is threaded into the upper end of the for centralizing engagement with the upper end of the cooperating holder l2. In Fig. 1 I have shown a fluid piping system 2|. in accordance with the disclosure of my co-pending applicatlOn. Serial No. 346,615, this fluid'piping system 24 having a control valve" for the control 01 7 fluid under pressure to actuate the expanding device It. I
As shown in Figs. 5 and 6, the applying device 22 comprises a cylindrical wall or sleeve 22 having the shoulder 31 at the upper'endthereot, and in such position that when a protector unit 22 is installed in the applying device 22 in the position shown, the shoulder 2'! will lie in a position surrounding the lower part of 'the holder l2 and below the lower end or the protector H. The applying device 22 has means for producing relative axial movement or the shoulder 21 and the holder l2 to accomplish separation of the protector l I and the holder l2. In the preferred form of the applying device 22 disclosed in Figs. 5 and 6, the shoulder 21 is maintained stationary and the holder I2 is pulled downward from the posicontract around and upon that portion of thedrill pipe lying within the guard 22 which comprises a cylindric wall projecting upward from the periphery of the shoulder 21.
The means which I have provided for pulling the holder i2 downward out of the protector ll includes an adaptor ring 28 ot a size to receive thelower portion of the. holder 12 and having bayonet notches 40 therein for interlocking engagement with the arcuate' lugs 21 oi! the holder l2. The adaptor ring 22 is detachably secured in the upper end of a cylindric wall ll, smaller than and slidable within the'cylinder 26. The lower portion of the wall ll projects through packing means 42 held at the lower end oi the cylinder 26 and is connected to an annular piston '42 which is slidable in a cylinder 44 oi. larger diameter than the cylinder 22 and connected to the lower end of the cylinder 22 by means of a means 41 to engage the cylinder 22'. A tour way valve 42 is rotatably held in a casing 42 having a port III which communicates withthe annular space 5| between the radial wall ll and the piston l2, and the port 52 which communicates with the space 52 between the cylinder 26 and the cylindrical wall. As shown in Fig. 8 a pressure fluid pipe 62 communicates with-one side of the casing 49, andthe fluid return pipe SI leads out from another part oithe casing 42. when the and exert its pressure downward against the annular piston 43 to force-the cylindrical wall Ii, the adaptor ring 39 and the holder l3 downward, and at the same time fluid may flow out of the space 53 as the volume of the space 53 is reduced as a result of downward movement of the packing 41 at the upper end thereof. Movement of the valve 48 in anti-clockwise direction through an angle of 90 will reverse the direction of flow of fluid through the ports 50 and 52 so that pressure will be applied in thespace 53 to return the movable parts of the device to the positions in which they are shown in full line in Fig. 5, and to permit passage of fluid out from the space ii.
In Fig. '7 I show an adaptor ring 39' of smaller internal diameter than the adaptor ring 39, to receive the lower end of a holder [3a of smaller diameter than the holder I 3 as shown in Fig. 5. In all other respects the adaptor ring 39 is the same as the adaptor ring 39. It is threaded at 6 expanded. Likewise, the single expanding device. employed at a central location, may serve a plurality of apply ng devices 22, employed at widely separated locations. I
The foregoingsimple practice is a marked improvement over the method disclosed in my copending application, Serial No. 346,615, which is illustrative of a general practice now being employed. In the old method, it was customary to employ at the location of the pipe to be protected an expanding device and an applying unit. The
expanding device was first employed to expand 7 the rubber protector on or in the applying device having means for holding the protector in .expanded condition. The applying device was then carried to the rotary table and employed to apply or transfer the expanded protector onto the surface of the pipe. My present invention avoids the necessity of the relatively heavy an expanding device with its associated compressor 58 for attachment to the upper end of the cylindric-al wall 4| and has a peripheral portion 59 for engagement with the inner face of the cylinder 36 and to provide an annular shoulder 60 to serve as an annular piston back of the packing 41 which is placed in the annular space above a retaining ring Bl which is threaded onto the upper portion of the cylindrical wall 4|. When holder l3a, Fig. '7, is of small diameter and the protector Ila thereon is relatively smalldiameter, it is advisable to place a supplementary shoulder element 310, comprising a diametrally split ring, in the position shown in dotted lines. A preferred manner of use of the invention isas follows: A selected number of protector units 22, Fig. 3, are made up by use of the expanding device I. As explained in the foregoing, the holders l3 for these units are individually placed on the support 26 of the expanding device Ill and the protectors Ii are expanded and placed thereon. A selected or required number of these units are transported to the location of the pipe to be protected, for example the derrick of a. well having suitable hoisting equipment for the pipe. The applying device 23, which is a relatively light piece of equipment, is also taken to the location of the pipe, and in conjunction with suitable handling Of the pipe the protector units 22 are individually placed in the applyin device 23 and are transferred to the pipe. A convenient and acceptable practice is to employ the applying device 23 in a position above the rotary table 24 --flning an opening I3.
wherein the pipe 25, Fig. 4, may be lowered therethrough to a desired position relative to the protector unit 22. The protector unit 22 is first placed within the guard 38 and is engaged with the adaptor ring 39 after which the drill pipe 25 is lowered through the protector unit 22 and the applying device 23. By means of the handle 62- thereof, the workmen hold the applying device 23 in a position raised from the rotarytable 24. Fluid pressure is then applied to the space ii to pull the holder I3 down out of the protector I I. An advantage of the invention is that there is minimum delay in applying the protectors II to the drill pipe 25, since the protector units 22 may be placed consecutively in the applying device 23 as fast as the operations are conducted without the necessity of waiting for a protector to be equipment to the location of the well, and also avoids the delay occasioned by the necessity of individually the protectors onto the support of an applying device while the pipe handling crew stands idle. In addition to the foregoing and other advantages the present method disclosed herein saves more than half of the time formerly required for the placing of protectors on a drill pipe by use of equipment such as shown in my co-pending application above referred to.
In the alternative form of applying device shown in Figs. 9 and 10 I provide an inner cylinder 10 having an outwardly projecting flange H at its upper end and an inwardly projecting flang 12 at its lower end,- this lower flange de- Around the cylinder 10 an outer cylinder 14 is placed, which outer cylinder ll has a flange II secured tothe flange H at the upper end of the inner cylinder It. The outer cylinder II is larger than'the inner cylinder 10 and an annular cylinder space 16 is formed therein in which an annular piston I1 is movable. 'I'heannular piston II has packing means I8 and I9 to respectively engage inner and outer cylinders Ill and I4. v
A cyllndrlc wall I! extends downward from the annular piston 11 in sliding contact with the cylinder II, and at the lower end thereof which projects below the lower end of the cylinder 10 the cylindricwall I has an inwardly projecting flange 82 in which an adaptor ring 82 is secured. The lower end of the outer cylinder 14 carries an annular wall II which closes. the lower end of the cylinder space It and carries packing means 85 to cooperate with the external surface of the cylindric wall II.
when a protector unit 22 is laced within the device as shown in Fig. 9, the lower end of its cyiindric holder it will project through the opening 13 and be supported by the adaptor ring 83,
which has bayonet slots at to receive the arcuate lugs 21 of the holder ii. The upper flange ll of the inner cylinder II has a projection 81, and a passage 8| is extended from the lower face of the projection I! through the flange II to communicate with upper end of the cylinder space 1-6. The lower end of the outer cylinder 14 has a projection 28 thereon in which there is formed a passage 8| leading from the upper face of the lug 89 to the lower end of the cylinder space 18 outside the wall I. A four way valve ll, as shown in Fig. 9, has two of its ports connected by piping 82 and I: with the passages It and SI, and as shown in Hg. 10, a pressure fluid pipe 9| and a return pipe as are respectively con- 7 nected to the remaining ports of the valve Oi. when the valve ti is manipulated so as to direct the pressure fluid through the passage 80 into the upperend of the cylinder space ll, the pressure thereof will force the annular piston l1 downward, with the result that the holder II of the protector assembly 22 will be moved downward. when the expanded protector. ll of the protector unit 22 enga es the flange II it will be held stationary and downward movement of the holder i3 will result in its being pulled from the interior of the expanded protector ii where upon the protector ll may contract around a pipe. extended through the holder II. The return of the piston I1 and its associated parts to the initial position thereof shown in Fig. 9 may be accomplished by manipulating the valve ll so as to direct the pressure fiuid through the passage to so that the pressure thereof will be exerted against the lower face of the annular piston I.
I claim as my invention:
1. In a drill pipe protector applying device for separating an expanded protector from a cylindric holder, the combination of annular cylinder and piston means defining an opening to receive the drill pipe which is to be protected; a support connected to one of said means, said support having parts to lock said holder thereto; an annular shoulder connected to the other of said means, to confront an end of said protector when the holder on which it is mounted is locked to said support; and means to apply fluid pressure to said cylinder and piston means to produce relative movement of said support and said shoulder to separate said protector and said holder.
2. In a drill pipe protector applying device for separating expanded protectors fromcylindric holders, the combination of: a pair of annular walls disposed in axially movable relation and each slidably engaging the other and defining an opening to receive the drill pipe which is to be protected; a support connected to one of said walls, said support having parts to lock one of said holders thereto; an annular shoulder connected to the other of said walls, to confront an end of one of said protectors when the. holder on which it is mounted is locked to said support; and means to apply relative axial movement to said walls whereby pressure of said shoulder against said protector and movement of said holder will separate said holder and said protector.
3. In a drill pipe protector applying device for separating an expanded protector from a cylindric holder, the combination of: double acting annular cylinder and piston means defining an opening to receive the drill pipe which is to be protected; a support connected to one of said means, said support having parts to lock said holder thereto; an annular shoulder connected to the other of said means, to confront an end of said protector when the holder on which it is mounted is locked to said support;
and means to apply fluid pressure to said cylinder and piston means to produce relative movement of said support and said shoulder to sep-' arate' said'protector and said holder, and to.
apply fluid pressure to said cylinder and piston means to return them to their original position of cooperation.
4. In a drill pipe protector applying device for separating an expanded protector from a cyiindric holder, the combination of inner and outer cylindric walls defining an annular cylin- 8 dc; space closedat one end and open at the other. saidinner cylindric wall having an inwardly projecting shoulder defining an opening: an annular piston in said annular cylinder space; means extending from said piston throlli said open end of said cylinder space, said means comprising parts for engaging an end of a holder situated within said inner cylindric wall with said' end thereof projecting through said opening defined by said shoulder; and means to apply fluid pressure to-said annular cylinder space to move said piston so as to carry said parts away from said shoulder and pull said holder through said opening.
5. In an applicator for placing a relatively thick one-piece rubber pipe protector ring upon a pipe of substantially larger diameter than the inside diameter of the ring, the combination of a relatively thin. smoothsurfaced, metallic first sleeve of an inside diameter which is suflicient for ready telescoping clearance by said sleeve of such a' pipe and of alength greater than but approximating that of such a protector ring for concentrically mounting the protector ring on said first sleeve under heavy circumferentially acting tensile stresses in the protector ring; a metallic ring of a diameter to loosely encircle the pipe; detachably inter-engaging elements on said metallic ring and the adjacent end of said first sleeve for locking them in axial alignment against forces acting to relatively displace them longitudinally; a second metallic sleeve of an inside diameter greater than the outside diameter of said first sleeve and longitudinally slidably engaging said metallic ring; radially extending annular means on said second sleeve of sufncient radial extent for substantial annular endwise thrust engagement with such a mounted protector ring outwardly from a circle adiacent the inner face of said protector ring, said first sleeve, including the inter-engaging element thereon, being longitudinally slidable within said second sleeve, including said radially extending means thereon, a distance sufilcient for the outer end portion of said first sleeve to pass said radially extending means on said second sleeve; means for holding said second sleeve stationary with respect to a pipe disposed within said applicator; and means for moving said metallic ring longitudinally relative to said stationariiy held second sleeve from an initial position in a direction and for a distance sufilcient to draw said first sleeve toward, within, and substantialw through said radially extending means.
6. In an applicator for placing a relatively thick one-piece rubber pipe protector ring upon a pipe of substantially larger diameter than the inside diameter of the ring, the combination of: a relatively thin, smooth surfaced, metallic first sleeve of an inside diameter which is sufilcient for ready telescoping clearance by said sleeve of such a pipe and of a length greater than but approximating thatof such a protector ring for concentrically mounting the protector ring on said first sleeve under heavy circumferentially acting tensile stresses in the protector ring; a metallic ring of a diameter to loosely encircle the pipe; detachably interengaging elements on said metallic ring and the adiacentend of said first sleeve for locking them in axial alignment against forces acting to relatively displace them longitudinally; a second metallic sleeve of an inannular means on said second sleeve of sumcient radial extent for substantial annular endwise thrust engagement with such a mounted protector ring outwardly from a circle adjacent the inner face of said protector ring, said first sleeve, including the inter-engaging element thereon, being longitudinally slidable within said second sleeve, including said radially extending means thereon, a distance suflicient for the outer end portion of said firstsleeve to pass said radially extending means on said second sleeve; means for holding said second sleeve stationary with respect to a pipe disposed within said applicator, said -ring and second sleeve having relatively spaced axially elongated walls and relatively spaced radially extending walls respectively providing a longitudinally expansible chamber; and hydraulic means cooperating with said expansible chamber to move said metallic ring longitudinally relative to said stationarlly held second sleeve from an initial position in a direction and for a distance suflicient to draw said first sleeve toward, within, and through said radially extending means.
'7. The combination defined in claim 6 in which said relatively spaced axially elongated walls are concentric cylindric walls coaxial with said applicator.
8. The combination defined in claim 6 in which said relatively spaced axially elongated walls are concentric cylindric guard walls coaxial with said applicator and extend from said shoulder in a direction opposite the aforesaid direction, a distance approximately equal to the length of said first sleeve.
9. The combination defined in claim 6 in which said holding means is a manual grip secured to and extending laterally outwardly from said second sleeve.
10. In an applicator for placing a relatively Number thick one-piece rubber pipe protector ring upon a pipe of substantially larger diameter than the inside diameter of the ring, the combination of a thin walled sleeve of an internal diameter to slide over said pipe, said sleeve being adapted to receive an expanded rubber protector thereon; a first cylindric member of larger internal diameter than the external diameter of said pipe, said member having means to connect it to one end of said sleeve; a second cylindric member also of 10 larger diameter than said sleeve, in sliding engagement with said first cylindric member and cooperating therewith so as to form an annular fluid receiving chamber in which fluid pressure will cause relative movement of said first and second cylindric members; a third cylindric member surrounding said protector when it is in place on said sleeve, having a shoulder to engage the inner end of said protector, said third cylindric member being rigidly connected to said second cylindric member; and means for applying fluid pressure to said chamber so as to produce movement of said first cylindric member relatively to said second and third cylindric members and to produce relative movement of said sleeve and said shoulder whereby said sleeve will be withdrawn from said protector.
11. In a drill pipe protector applying device for separating an expanded protector from a cylindric holder having a locking member at one end thereof, the combination of: annular cylinder and piston means defining an opening to receive the drill pipe which is to be protected; a support connected to one of said means, said support having parts to engage said locking member of said holder thereto; an annular shoulder connected to the other of said means, to confront an end of said protector when the holder on which it is mounted is locked to said support, said annular shoulder defining an opening of such size that said locking member of said holder may pass therethrough.
ADELBERT M. GRAHAM.
file of this patent:
UNITED STATES PATENTS Name Date Grant Feb. 21, 1865 Stebins Aug. 15, 1876 Rice Sept. 30, 1884 Wray Nov. 19, 1912 Caldwell Sept. 14, 1920 Reed Oct. 25, 1921 waldron June 20, 1922 Jessen Apr. 5, 1932 Bettis July 10, 1934 Nygard Jan. 19, 1937
US361736A 1940-10-18 1940-10-18 Drill pipe protector applying and installing apparatus Expired - Lifetime US2440009A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2522495A (en) * 1946-02-25 1950-09-19 Byron Jackson Co Apparatus for installing casing protectors on drill pipes
US2549602A (en) * 1949-10-01 1951-04-17 Indiana Steel Products Co Applicator for ion traps
US2682102A (en) * 1949-06-14 1954-06-29 Byron Jackson Co Drill pipe protector apparatus
US2687566A (en) * 1949-05-16 1954-08-31 Jesse E Hall Applicator tool
US2693633A (en) * 1949-06-16 1954-11-09 Byron Jackson Co Transfer apparatus for drill pipe protectors
US2776469A (en) * 1952-03-20 1957-01-08 Collett Charles Haskell Apparatus for applying a sucker rod protector

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US46464A (en) * 1865-02-21 Improved method of uniting rubber rolls to shafts
US181113A (en) * 1876-08-15 Improvement in hydraulic elevators
US305962A (en) * 1884-09-30 Feeding apparatus for rotary drills
US1044617A (en) * 1912-07-18 1912-11-19 Niles Bement Pond Co Hammer-press.
US1352722A (en) * 1919-07-22 1920-09-14 Noah L Caldwell Tire-removing apparatus
US1395140A (en) * 1920-08-04 1921-10-25 Albert F Reed Piston-ring tool
US1420507A (en) * 1920-12-07 1922-06-20 Horace S Waldron Device for applying piston rings
US1852613A (en) * 1930-11-13 1932-04-05 Jessen Jacob Machine for assembling piston rings on pistons
US1965876A (en) * 1928-10-31 1934-07-10 Patterson Ballagh Corp Applicator for elastic rings, etc.
US2068107A (en) * 1934-04-02 1937-01-19 Celon Company Apparatus for applying bands on containers

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US46464A (en) * 1865-02-21 Improved method of uniting rubber rolls to shafts
US181113A (en) * 1876-08-15 Improvement in hydraulic elevators
US305962A (en) * 1884-09-30 Feeding apparatus for rotary drills
US1044617A (en) * 1912-07-18 1912-11-19 Niles Bement Pond Co Hammer-press.
US1352722A (en) * 1919-07-22 1920-09-14 Noah L Caldwell Tire-removing apparatus
US1395140A (en) * 1920-08-04 1921-10-25 Albert F Reed Piston-ring tool
US1420507A (en) * 1920-12-07 1922-06-20 Horace S Waldron Device for applying piston rings
US1965876A (en) * 1928-10-31 1934-07-10 Patterson Ballagh Corp Applicator for elastic rings, etc.
US1852613A (en) * 1930-11-13 1932-04-05 Jessen Jacob Machine for assembling piston rings on pistons
US2068107A (en) * 1934-04-02 1937-01-19 Celon Company Apparatus for applying bands on containers

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2522495A (en) * 1946-02-25 1950-09-19 Byron Jackson Co Apparatus for installing casing protectors on drill pipes
US2687566A (en) * 1949-05-16 1954-08-31 Jesse E Hall Applicator tool
US2682102A (en) * 1949-06-14 1954-06-29 Byron Jackson Co Drill pipe protector apparatus
US2693633A (en) * 1949-06-16 1954-11-09 Byron Jackson Co Transfer apparatus for drill pipe protectors
US2549602A (en) * 1949-10-01 1951-04-17 Indiana Steel Products Co Applicator for ion traps
US2776469A (en) * 1952-03-20 1957-01-08 Collett Charles Haskell Apparatus for applying a sucker rod protector

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