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Publication numberUS2764243 A
Publication typeGrant
Publication dateSep 25, 1956
Filing dateApr 14, 1952
Priority dateApr 14, 1952
Publication numberUS 2764243 A, US 2764243A, US-A-2764243, US2764243 A, US2764243A
InventorsPage John S
Original AssigneePage John S
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Well packer
US 2764243 A
Abstract  available in
Images(2)
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Claims  available in
Description  (OCR text may contain errors)

Sept. 25, 1956 Filed April 14, 1952 J. S. PAGE 3 WELL PACKER 2 Sheets-Sheet l 43 INI/ENTOR.

42 ZHN 5. B465,

TTOENEY.

WELL PACKER,

Filed April 14, 1952 United States Patent WELL PACKER John S. Page, Long Beach, Calif.

Application April 14, 1952, Serial No. 282,165

Claims. (Cl. 166-119) This invention relates to Well tools and has for one of its objects the provision of a device which when embodied in a well tool, will have the functions of permitting fluid to by-pass freely between the tool and the well casing, of forming a seal between the tool and the casing responsive to fluid pressure applied thereto through the tubing string and tool, and of moving axially of the tool responsive to such pressure to serve as an actuator for parts or adjuncts of the tool.

It is another object of this invention to provide an improved well tool device which makes it possible to anchor a well tool in the desired position in the well without manipulation of the tubing string.

It is another object of this invention to provide an improved well tool device which makes it possible to move a well tool freely through fluid in a well without depending upon the operation of a valve or requiring the use of a by-pass passage in the tool.

It is another object of this invention to provide an improved well tool device which is operable to cause a normally inoperative sealing means to form an effective seal between a well tool and the well casing without depending upon the operation of a valve or requiring movement of the tubing string.

It is another object of this invention to provide a novel well tool adjunct which may be used solely as an improved packing means for forming a yseal between a well tool and the wall of the well, the adjunct yielding and permitting fluid to pass freely between the tool and the well wall in running the tool into and out of the well, and operating to form the desired seal responsive to fluid pressure intentionally applied thereto.

It is another object of this invention to provide a novel well tool device which is operable responsive to fluid pressure applied thereto through the tubing string, to simultaneously operate tool anchoring means and normally inoperative sealing means for forming a seal between the tool and the casing.

lt is a further object of this invention to provide a well tool device which is exceptionally simple as to construction and readily applicable to various forms of well tools for increasing the efficiency thereof.

It is another object of this invention to provide a new well tool adjunct which may be produced by arranging a pair of flexible and resilient packing cups of a Well known type, in a particular manner on a well tool.

It is another object of this invention to provide a device such as described, wherein the two packing cups are arranged with their lips opposed and related so as to restrain the flow of fluid transversely between the lips, yet will yield in a manner to permit by-passing of iiuid past both cups when the fluid pressure exteriorly of both cups is greater than the pressure interiorly thereof.

It is another object of this invention to provide a well tool such as described which in one form, may comprise a pair of resilient and flexible packing cups mounted on the tool for axial movement relative thereto, with the open ends and lips thereof opposed and so related that the device may be operated to perform the functions hereinbefore noted in a particularly efficient manner according to the working requirements of the particular tool.

It is another object of this invention to provide an im- 'ice proved tool for packing off a cased well, wherein the tool may be anchored as desired in the well and operated as desired without requiring manipulation of the tubing string or the operation of one or more valves.

It is another object of this invention to provide a well,

tool adjunct such as described which in one form embodies a hydraulically operated means operable in conjunction with the two flexible and axially slidable packing cups, to actuate normally inoperative packing means for forming seals against the well casing.

This invention possesses many other advantages and has other objects which may be made more easily apparent from a consideration of several embodiments of the invention. forms in the drawings accompanying and forming part of the present specification. These forms will now be described in detail, illustrating the general principles of the invention; but it is to be understood that this detailed description is not to be taken in a limiting sense, since the scope of the invention is best defined by the appended claims.

Referring to the drawings:

Fig. 1 is a fragmentary vertical sectional view of a well packer embodying the present invention, as it would appear when being moved in a well;

Fig. 2 is a fragmentary vertical sectional view of the tool shown in Fig. l, as anchored to the well casing and actuated to pack off the well;

Fig. 3 is a cross sectional view taken on the line 3-3 of Fig. 2;

Fig. 4 is a fragmentary sectional view of a modified form ofV this invention;

Figs. 5 and 6 are enlarged, fragmentary, vertical halfsectional views of the well tool of this invention as it would appear when stationary and in operating position, respectively; and

Fig. 7 is a fragmentary part sectional and part elevational view of a modified form of this invention.

As shown in the accompanying drawings, the present invention is embodied in a well packer generally designated 8 and adapted to be connected with a tubing string 9 for positioning in the casing 10 of a well. In this tool a normally inoperative packing means 11 and a normally inoperative anchoring means 12 both mounted on the tubular body member 13 of the tool, are adapted respectively, to form an effective seal between the tool and the casing 10 and anchor the tool to the casing responsive to hydraulic operation of a device generally designated 14.

If desired, there may be provided in the tool as shown in Figs. 1 and 2, a hydraulically actuated means 15 operable in conjunction with the device 14 for actuating the packing means 11 to form a seal against the casing 10.

The tubular body member 13 is open at both ends, being connected as a continuation of the tubing string 9 by means of the coupling 16 whereby fluid may llow freely through the tool.

The packing means 11 comprises a plurality of rings 17 of compressible and resilient material surrounding.

the upper portion of the body member 13 and confined thereon between the lower end of a collar 18 and a shoul`v der 19 on a conical slip expander 20. The collar 18 surrounds the body member 13 and is restrained against upward movement by the coupling 16, whereas the slip expander 20 is slidably mounted on the body member 13, whereby upward movement of the expander relative to the body member will cause the sealing rings 17 to be compressed and expanded laterally from normal position clear of contact with the casing 10 as shown in Fig. 1, into sealing contact with the casing as shown in Fig. 2.

Theanchoring means 12 includes the slip expander 20 and slips 24 slidably connected in a well known manner For this purpose there are shown three,

for movement into and out of anchoring engagement with the casing 10. The arrangement of the expander 'and slips 24 is such that on the upward sliding movement of the slips, the expander willl be moved upwardly and cause the ysealing rings 17 to expand laterally into sealing contactwith the casing 10 as the slips move into anchoring engagement with the casing.

As it is desired, in accordance with the invention, to set the slips and form an effective seal with the casing without requiring movement of the tubing string or the operation of one or more valves, the hydraulically operated device 14 is embodied in the tool. This device is a movable packer or packing means which of itself, without the operation of a valve, provides for a free movement of the tool through the iluid in the well in positioning and removing the tool, and, when activated by fluid pressure directed down the tubing string, rst forms a seal with the casing, thereby causing differential pressures to be applied thereto, then moves as an actuator for setting the slips 24 and expanding the sealing rings 17 into sealing contact with the casing.

Accordingly, the device 14 embodies packing means including a pair of tlexible, resilient and annular wall portions 26 and 27 disposed one above the other so as to form an annular chamber 28 between the inner surfaces thereof and the body member 13. These wall portions 26 and 27 are arranged to be relatively movable transversely of the axis of the tool toward and away from the casing 10, and conjointly movable as a unit axially of the tool, the transverse movement causing at least one of the wall portions to seal against the casing, and the axial movement in one direction causing the packing means 11 to form a seal and the anchoring means 12 to anchor the tool as will be now fully described.

Movement of the wall portions 26 and 27 both transversely and axially in one direction is eiected by introducing fluid under pressure from the tubing string 9 through the body member 13 and port means 29 in the body member, into the chamber 28 so as to develop a greater pressure in the chamber 2S than in the casing annulus above the upper wall portion 26, and to equalize the pressure on the interior and exterior of the lower wall portion 27. As a result of this dilerential pressure, the upper wall portion is urged to form a seal with the casing and the two wall portions 26 and 27 will move upwardly axially of the body member 13. Thisaxial movement of the wall Vportions 26 and 27 is transmitted through a linkage means 30 slidable on the body member 13, t o urge the slips 24 and slip expander 20 upwardly whereby the sealing rings 17 will be expanded to form a seal against the casing, and the slips will be moved into anchoring engagement with the casing. Y

It has been found that a pair of resilient and flexible packing cups 32 and 33 of a well known type may be employed in the hydraulically operable device 14, as these cups when arranged with their open ends opposed and contacting one another or closely spaced, will form the relatively movable wall portions 26 and 27 which define the annular chamber 28.

It should be noted that each packing cup lhas a greater uid pressure responsive area exteriorly -than interiorly thereof. Thus, in moving the tool in Veither-...direction through fluid in the well, although the pressure interiorlyv and exteriorly of the cups may be substantially the same, the lips of the cups will yield inwardly towardrthe tool whereby the tool may be moved freely. v However, when uid pressure is pumped through the tool into the pressurev chamber 28 between the cups and into thek casing 'annulus b elow the .two cups, the lower cup is exposedsto equal pressure internally and externally, whereas the upper cup has. a greater tluid pressure internally than externally. In consequence, the lower cup is ineffective asa. packer, whereas the upper cup is urged into the desiredY sealing contact with the casing or well wall. I f A The exterior of each packer'provides a greater uid responsive area than the interior because the exterior circumference is greater than the interior circumference for any given section.

Referring more specifically to the device 14, it will be apparent that it consists of a unit including cup-supporting means, here shown as a sleeve 35 slidably mounted on the body member 13 between the linkage means 30 and a shoe or coupling 36 on the lower end of the body member, the two cups 32 and 33 being lixed to the sleeve 35 as will be hereinafter fully described, to move therewith axially of the body member.

Ports 29a in the sleeve 35 are at all times in registration with elongated ports 29b in the body member 13, these ports constituting the port means 29 which communicates the interior of the body member 23 with the chamber 28. In this connection it should be noted that the ilow of fluid through these ports is assured regardless of relative angular movement of the sleeve 3S and the body member 13, by the provision of an annular recess 35 in the sleeve.

The cups 32 and 33 are secured to the sleeve 35 by means of clamping rings 38, thimbles 39 and collars 40, the latter being slidable on the body member 13 and threaded onto the ends of the sleeve so as to bear against the thimbles. This arrangement holds the two cups with their bevelled lips 41 in such contact as to form the chamber 28 and to restrain transverse flow of fluid between the lips while providing however for the lips to yield inwardly and permit by-passing of fluid past the cups when moving the tool through tluid in the well. Sealing rings 42 and 43 in the collars 40 seal against the body member 13 and the sleeve 35 respectively to prevent fluid from passing between these collars and the body member and between the collars and the sleeve.

The slidable linkage means 30 for operatively connecting the axially movable device 14 with the slips 24, includes a sleeve 44 slidable on the body member 13 with its upper end connected by means of links 45 with the lower ends of the slips. The lower end of the sleeve 44 has a ring 46 threadedly connected thereto so as to rest upon the upper collar 40.

Means is provided for resiliently holding the slips 24, linkage means 30 and the slidable device 14 in their downmost or inoperative positions, shown in Fig. l, subject however to yielding and permitting these parts to be moved upwardly relative to the body member 13, upon operating the device 14 as an actuator. rings 17 are relaxed and free from contact with the casing, the slip-expander 20 is in down position and the slips 24 are free from contact with the casing. Moreover, at this time, the cups 32 and 33, although in contact with the casing as shown in Fig. 5, will yield and permit fluid to pass freely between the tool body member and the well wall as shown in Fig. l when running the tool into and out of the well or when moving the tool through uid in the well.

As here shown, the means for holding the aforesaid slidable elements in inoperative position includes a coiled expansion spring 48 mounted in the annular space 49 formed betweenV the sleeve 44 and the body member 13. The upper end of the spring 48 abutsa stop ring 50 `which is restrained against upward movement by an annular shoulder 51 on the bodymember 13. vThe lower end conjunction with the device 14 to assist insetting thev sealing rings 17,` includes a sleeve piston 54 slidable-irlk a space provided between the collar 18 and the body member. V This piston is threadedly connected, as at 55,

withthe upper end of the slip expander 20 and when moved upwardly by fluid pressure'introduced through Normally the sealing a port 56 into an adjacent annular pressure chamber 57, will raise the slip expander, thereby compressing and expanding the rings 17 to ferm a seal with the casing at the same time the device 14 operates to slide the slips 24fupwardly on the expander into anchoring engagement with the casing.

The pressure chamber 57 is formed between the upper portion of the sleeve piston 54 and the exterior of the body member 13, there being an annular flange 58 on the body member contacting the sleeve piston to define the lower end of the chamber. A sealing ring 59 on this flange forms a fluid tight seal with the sleeve piston. The upper end of the sleeve piston 54 is provided with `an inwardly extending annular head flange 60 having a working fit with the body member 13 above the flange 58. The flanges 58 and 60 space the main body of the sleeve piston 54 from the body member 13 to define the pressure chamber 57. The head flange 60 is also provided with a sealing ring 61 to form a fluid tight seal with the body member 13. A shoulder 62 on the sleeve piston 54 is disposed to abut the flange 58 to limit the downward movement of the piston to a position in which the head flange 60 is spaced above the port 56 whereby the fluid pressure will be effective to raise the sleeve piston.

The exterior surface of the sleeve piston 54 is in contact with the inner surfaces of the sealing rings 17 and serves as a backing therefor, whereby under compression, these rings will expand outwardly against the casing.

Operation When the tool embodying the present invention is being run into or out of a well or moved axially therein on the tubing string, for example, the well packing tool as here shown, the wall portions of the cups 32 and 33 will yield inwardly, as shown in Fig. l and indicated by the dotted lines in Fig. 5, under pressure of fluid in the well and allow fluid to pass freely between the tool and the casing, as at this time the sealing rings 17, and the slips 24 are from contact with the casing.

It should be noted that when the lips 41 and adjacent wall portions are urged inwardly during movement of the tool through the fluid in the well, they will cooperate to form a seal preventing flow therebetween into the chamber 28.

When the tool has been positioned as desired in the well according to the particular operat-ion thereof required, in the present case, this being a packing off of a portion of the well, fluid pressure is developed in the tubing string and body member 13 of the tool by an appropriate pumping operation. Thus, fluid under pressure flows out the lower` end of the body member 13 and up the annular space between the casing and member 13 to exert pressure against the outer side of the lower cup 33. Fluid pressure is also effective through ports 2911 and 29a and the chamber 28 against the interior of the cups 32 and 33. At this time, the pressure interiorly of the upper cup 32 is greater than the pressure above the exterior thereof, and this cup is urged outwardly into sealing contact with the casing, while equal pressures are applied to the interior and exterior of the lower cup 33. As the two cups are slidably supported on the body member 13 by the sleeve 35, the sleeve and cups will move upwardly under the pressure applied from the chamber 28, against the upper cup 32, thereby causing the sleeve 44 to be correspondingly moved so that through the links 45, the slips 24 will be pushed upwardly on the conical expander 20 and thereby moved into anchoring enga-gement with the casing. In so moving, the slips 24 also urge the expander 20 upwardly, thereby compressing the rings 17 and causing them to expand outwardly into sealing contact with the casing. This actuation of the sealing rings 17 is assisted by the operation of the means 15 wherein the 6 sleeve piston 54 is raised by the pressure of the fluid entering the chamber 57 through the port 56, during the upward sliding movement of the cups 32 and 33. As the sleeve piston 54 is connected at 55 with the slip expander 20, it is apparent that the expander will be raised thereby and cause the rings 17 to seal against the casing.

It will now be seen that the anchoring of the tool to the casing and the forming of a seal with the casing or well wall readily may be effected without manipulating the tubing string or requiring the operation of a valve in the tool. This is an important provision for a packer or other tool which may embody the present invention, as the desired setting and operation of such tools may be effected after they are connected with pumping or other apparatus at the top of the well.

It should be noted that the particular bevel of the lips 41 of the cups 32 and 33 causes a turbulence of the fluid resulting in the application of uid pressure in such manner as to force the lips laterally inwardly while in contact one with the other when pressure is externally applied thereto from above or below `the cups.

Again, it should be noted that the wickers or teeth of the slips 24 are of a straight V-shape, projecting in planes normal to the axis of the tool, whereby the slips may slide freely on `the casing in being moved into and out of anchoring engagement with the casing in accordance with this invention.

Release of the anchoring means 11 may be effected by cessation of the pumping of pressure fluid and then lifting the tubing string. The upper cup 32 is relaxed upon cessation of fluid pressure internally thereof, whereupon the lifting of the tubing string causes the body member 13 to move relative to the slidable parts on the body member. When the flange 58 on the body member is moved into contact with the shoulder 62 on the sleeve piston 54, this piston is lifted and lifts the slip expander 2l) relative to the slips 24, thereby releasing the slips. The spring 44 then operates to urge the slips 24, sleeves 44 and 35 and the cups 32 and 33 into downmost position as shown in Fig. l.

A modified form of this invention, as shown in Fig. 4, is identical with the previously described form, except that the hydraulically operated means 15 including the sleeve piston 54 and associated parts are omitted and the upward movement of the slidable slip expander 64 in this form as effected by the slips 65 being moved upwardly thereagainst, is relied upon to compress the sealing rings 66 and move `them into sealing contact with the casing 67. In this form of the invention, the slip expander 64 is limited as to downward movement by the cooperable shoulders 68 and 69 on the body member 70 of the tool and slip expander respectively. These shoulders also permit of lifting the slip expander to -release the slips upon lifting of the tubing string to which the tool is attached. In place of the sleeve piston 54 of the first described form of the invention, a sleeve 71 is mounted on the tool body member 70 in abutting relation to the coupling 72 at the top of the body member. A collar 73 is slidable on the body member 70 and telescopes the lower end of the sleeve 71, the sealing rings 66 being mounted on the sleeve 71 and confined between the upper end of the slidable collar 73 and a flange 74 on the upper end of the sleeve. Sealing rings 75 and 76 are carried by the upper end of the sleeve 71 and the lower end of the collar 73 for sealing against the body member.

This modified form of the invention is operated in the same manner as the form of the invention previously described.

It should be noted that the hydraulically operable device 14 of this invention may be embodied in any well tool wherein it is desired to operate lone or more movable parts of the tool within the range of operation of the device or wherein it is desired that the device be operated solely so that `at least one of the cups will form a seal with the wellcasing. lf desired the two cups could be actuated to conjointly form a seal with the casing, it only -being necessary to conne the activating pressure -to the interior of the cups to accomplish this.

An example of the use of the packing device 14 solely as a packer is shown in Fig. 7 wherein the device is embodied in a tubing anchor 85. This tool includes a tubular body member 86 adapted to be coupled to a tubing string 87, a fluid pressure operated anchoring means 88 on the body member and a fluid pressure operated packing device 89 corresponding to the device 14 except that it is ixed against axial movement and serves only to form a seal with the well casing 9i).

The anchoring means 88, as here shown, includes slips 91 mounted between retainers 92 and 93 on the body member 86 for movement into and out of anchoring engagement with the casing 90. These slips are normally gravitationally disposed in retracted position clear of contact with the casing. They are moved into anchoring position by means of pistons 94 operating in cylinders 95 in the wall of the body member. These cylinders open into the bore of the body member 86, whereby uid pressure will be effective to move the pistons against the slips and thereby move the slips into anchoring engagement with the casing. This provides for anchoring the tubing string to the casing so that the well may be pumped or otherwise treated within the range of operation of the tool.

The packing means S9 consists of a pair of flexible and resilient packing cups 96 and 97 and -a means 98 for xing these cups upon the exterior of the body member with the lips 84 at open ends of the cups contacting one another as shown, or so related as to form an annular chamber 99 around the body member. This arrangement is such that the lips and adjacent wall portions of the cups are relatively movable in a direction transverse to the axis of the tool into and out of sealing contact with the casing. In other words, these cups are identical with the cups shown in the rst described form of this invention, except that they are fixed against movement axially of the body member of the tool and serve solely as means for creating a pressure diterential and for forming a seal against the casing in the same manner as the cups in the device 14. The body member 86 has a port 100 therein whereby uid pressure will be eiective in the chamber 99 in the same manner as in the chamber 28 of the device 14, for causing the upper cups 96 to seal against the casing while the pressure is balanced on the interior and the exterior of the lower cup 97. Thus, the cups 96 and 97 in this tool operate in exactly the same manner -as in the tool shown in Figs. 1 6, as to forming a seal with the casing.

The advantages derived by the use of the packing means 89 in this tool is that it will exclude the entrance of undesirable uids or matter from the casing annulus above the seal formed by `the packing means, also prevent the escape of iluid from below the seal up the casing annulus. Further, the tool may be readily and easily run into and out of the well due to the cups yielding and allowing uid to by-pass freely, it being unnecessary to provide a by-pass passage in the tool as with cup packers as heretofore used.

I claim:

l. In a well tool adapted to be positioned in a well on a tubing stning, a body member having a passage therethrough, packing means on the body member movable from a position permitting fluid to pass between it and the wall of the well into a position sealing against said wall, anchoring means on the body member including an anchoring member movable into and out of anchoring engagement with said wall, means for operating said anchoring means and said sealing means including a pair of exible packing cups, means supporting said cups for movement axially of the body member,l with lthe open ends of the cups opposed to one another and cooperable to Aform a chamber, means whereby Huid pressure developed in said passage is effective in said chamber to move said cups axially of the body member, and means responsive to said movement of said cups for moving said anchoring member into anchoring 4engagement with said wall and moving said packing means into sealing engagement with said wall.

2. In a well tool adapted to be positioned in a well on a tubing string, a body member having a passage therethrough, pack-ing means on the body member movable from a position permitting uid to pass between it and the wall of the well, into a position sealing against said wall, anchoring means on the body member including an anchoring member movable into and out of anchoring engagement with said wall, a pair of ilexible packing cups, means supporting said cups for axial movement on said body member with the open ends of the cups opposed and contacting one another to form with said body member an annular chamber, said body member having a port through which fluid may enter said chamber, and means moving said anchoring member into anchoring engagement with said wall also moving said packing means into sealing contact with said Wall responsive to said axial movement of said cups.

3. In a well tool adapted to be positioned in a well on a tubing string, a tubular body member packing means on said body member movable from a position permitting uid to pass between it and the wall of the well into a posi-tion sealing against said wal-l, anchoring means including a slip expander slidable on the body member, means whereby movement of the expander in one direction causes said packing means to move into sealing contact with said wall, slips slidable on said expander into and out of anchoring engagement with said wall, movement of the slips in one direction on said expander causing movement of the expander for moving the packing means into sealing contact with said wall, a pair of flexible and resilient packing cups, means mounting said cups for movementrelative to said body member with the open ends of said cups opposing one another and forming with said body member an annular chamber, said body member having a port-opening into said chamber, and means operatively connecting said cups with said slips for moving the slips and slip expander to cause said slips and said packing means to engage said wall responsive to movement of said cups.

' 4. In a well tool adapted to be positioned in a well on a tubing string, a tubular body member packing means on said body member movable from a position permitting uid to pass between it and the wall of the well into a position sealing against said Wall, anchoring means including a slip expander movable on the body member, means whereby movement of the expander in one direction causes said packing means to move into sealing contact with said wall, slips slidable on said expander into and out of anchoring engagement with said wall, movement of the slips on said expander in one direction causing movement of the expander for moving the packing means into sealing contact with said wall, means for moving said slipsfand expander for actuating said slips and said packing means including a pair of exible packing cups', means mounting said cups for axial movement on said body mem-berwith the open ends of said cups in contact with one another and forming an annular chamber around said body member, said body member having a port opening into said chamber, a member movable between said slips and said cups responsive to movement of said cups, and means operatively connecting said last nmned member with said slips.

5. In a well tool adapted to be positioned in a well on 'a tubing string, a tubular body member packing means on said body member movable from a position permitting fluid to pass between it and the wall of the well into a j position sealing against said wall, anchoring means including a slip expander slidable on the body member, means whereby upward movement of the expander moves said packing means into sealing contact with said wall, slips slidable on said expander into and out of anchoring engagement with said wall, upward movement of the slips on said expander causing upward movement of the expander for moving the packing means into sealing contact with said wall, means for moving said slips and expander upwardly relative to said body member including a pair of exible packing cups, means mounting said cups for sliding movement on said body member with the open ends .of said cups in contact with one another and foreming an annular chamber around said body member, said body member having a port opening into said chamber, a sleeve slidable on said body member between said slips and said cups responsive to sliding movement of said cups, means connecting said sleeve with said slips, and resilient means resisting sliding movement of said sleeve in the direction for causing movement of said slips'into anchoring engagement with said wall.

6. In a well tool adapted to be positioned in a well on a tubing string, a tubular body member packing means on said body member movable from a position permitting fluid to pass between it and the wall of the well into a position sealing against said wall, anchoring means including a slip expander slidable on the body member, means whereby sliding movement of the expander in one direction moves said packing means into sealing contact with said wall, slips slidable on said expander into and out of anchoring engagement with said wall, means for moving said slips into anchoring engagement with said wall including a pair of flexible packing cups, means mounting said cups for sliding movement on said body member with the open ends of said cups in contact with one another and forming an annular chamber around said body member, said body member having a port opening into said chamber, means operatively connecting said cups with said slips, and fluid pressure responsive means on the body member for moving said expander in said one direction.

7. In a well tool adapted to be positioned in a well on a tubing string, a tubular body member packing means on said body member movable from a position permitting fluid to pass between it and the wall of the well into a position sealing against said wall, anchoring means including a slip expander slidable on the body member, means whereby sliding movement of the expander in one direction moves said packing means into sealing contact with said wall, slips slidable on said expander into and out of anchoring engagement with said wall, a pair of flexible and resilient packing cups, means mounting said cups for sliding movement on said body member with the open ends of said cups in contact with one another and forming an annular chamber around said body member, said body member having a port for directing fluid pressure into said chamber for effecting sliding movement of said cups, means operatively connecting said cups with said slips for moving the slips into anchoring engagement with said wall responsive to sliding movement of said cups in one direction, and hydraulically responsive means on the body member for moving said expander in the direction for moving said packing means into sealing contact with said wall including means forming a second chamber, said body member having a second port opening into said second chamber, and a piston in said second chamber connected with slip expander and movable in said one direction responsive to fluid pressure applied to said second chamber.

8. In a well tool adapted to be positioned in a well on a tubing string, a tubular body member, packing means mounted on said body portion for lateral expansion into sealing contact with the wall of the well, a slip expander slidable on said body member, means responsive to sliding movement of said expander in one direction for expanding said packing means into sealing contact with said wall, fluid pressure operable means for moving said expander in said one direction including means forming an annular chamber around said body member, said body member having a port communicating the interior of said body with said chamber, a piston connected with said slip expander and operable in said chamber responsive to fluid pressure applied to said chamber, slips slidably connected with said expander for movement thereon into and out of anchoring engagement with said wall, a pair of opposed ilexible packing cups sii-:table on said body member responsive to uid pressure applied from said body member interiorly and exteriorly of said cups, said cups having their open ends facing one another, and means responsive to sliding movement of said cups for moving said slips into anchoring engagement with said wall and moving said expander in said direction for actuating said packing means.

9. In a well tool adapted to be positioned in a cased well on a tubing string, a tubular body member, packing means mounted on said body member for expansion into sealing contact with the well casing, a slip expander slidable on said body member, means responsive to sliding movement of said expander in one direction for expanding said packing means into sealing contact with said casing, fluid pressure operable means for moving said expander in said direction for actuating said packing means, said uid pressure operable means including means forming an annular chamber around said body member, said body member having a port opening into said chamber, a piston connected with said slip expander and operable in said chamber responsive to iluid pressure applied to said chamber, slips slidably connected with said expander for movement into and out oi' anchoring engagement with said casing, a pair of resilient and flexible packing cups, means mounting said cups for movement relative to said body member with the open ends of said cups contacting one another and forming a chamber exteriorly of said body member, said body member having a second port opening into said second named chamber, and means slidable on said body member operatively connecting said slips with said cups.

10. In a well tool adapted to be positioned in a cased well on a tubing string, a tubular body member, a pair of flexible and resilient packing cups, means mounting said cups for sliding movement axially of said body member with the cups forming a chamber between them and the body member and having their open ends contacting one another and relatively movable transversely of the axis of the body member, said body member having a port opening into said chamber, a sleeve mounted to slide on the body member responsive to sliding movement of said cups, spring means restraining sliding movement of said sleeve in one direction, anchoring means including a slip expander slidable axially on the body member, slips movable on said expander into and out of anchoring engagement with said casing, packing rings on said body member, means whereby sliding movement oi' said expander in one direction will move said rings into sealing contact with said casing, means operatively connecting said slips with said sleeve for moving the slips into anchoring engagement with the casing, said expander moving in the direction for actuating said rings during movement of the slips into anchoring engagement with the casing.

References Cited in the le of this patent UNITED STATES PATENTS 2,164,195 Waltermire June 27, 1939 2,352,700 Ferris -Tuly 4, 1944 2,430,623 Taylor et al Nov. 11, 1947 2,467,801 Baker Apr. 19, 1949 2,598,340 Baker et al. May 27, 1952 2,606,618 Page Aug. 12, 1952

Patent Citations
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Referenced by
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Classifications
U.S. Classification166/119, 166/191, 277/342, 166/187, 277/331, 166/122, 166/120
International ClassificationE21B33/127, E21B33/12, E21B33/1295
Cooperative ClassificationE21B33/127, E21B33/1295
European ClassificationE21B33/127, E21B33/1295