US2631670A - Apparatus for handling fluid in a well - Google Patents

Description

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'Illllllllll'll Dunn unnuuun nlununu lun-uuu A. l-. ARMENTROUT APPARATUS FOR HANDLING FLUID IN A WELL lllwllll.lllflll@ ununnuununuun- H-u March 17, 1953 Filed sept. 3o. 1948 M'archl7, 1953 A. l-. ARMENTROUT 2,631,670

APPARATUS FOR HANDLING FLUID IN A WELL Filed Sept. 50. 1948 6 Sheets-Sheet 2 March 17, 1953 A. l-. ARMENTRou-r APPARATUS FOR HANDLING FLUID 1N A WELL fa. r

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Filed Sept. 30. 1948 March 17, 1953 A. L.. ARMENTROUT APPARATUS FOR HANDLING F'LUIDv IN A WELL 6 Sheets-Sheet 4 Filed Sept. 50. 1948 March 17, 1953 A. l.. ARMENTROUT APPARATUS FOR HANDLING FLUID IN A WELL Filed Sept. 50. 1948 6 Sheets-Sheet 5 March 17, 1953 A. L.. ARMENTRou-r 2,631,670

APPARATUS FOR HANDLING FLUID 1N A WELL Filed sept. so. 194e e sheets-snee; e

V4/"MM Affair/ey Patented Mar. 1j7, 1953 5316315610 .APPRTUSFDBHANDHNGTLUIDIN ..WELL

"12 Gla'ims,

` This `invention '-"has to dowith a method fand apparatus for 'handling `iluid 'in a 'well and 5lit is a. general object Aof the v"invention 'to .provide 'for the'handling of 'ya well liner and ithe circulation 'of fluid therethrough to Ithe vlend "that the operator lcan ,gain ilow or vcirculation 'of .ftluid in either direction through the .perforations `of the liner.

In the ordinary oil well itis common 'Lto finstall a liner which 'is usually an elongate iper- Vforate member through which well fluids fare 'admitted'to vthereafter .iiow up through the `.Well tothe surface. Itfis not'infrequent .that'circumstances arise whenit would be 'highly .desirable to b'eable to reverse Circulation'throughlthe perforations of the liner. 'With'the ,usual wellequip- `ment such a reversed circulation is vdifdcult not almost impossible 'to gain, since it requires vintroduction of pressure inside the .liner Ato rover:-

come well pressures on 'the exterior o'f thelineig and any ,effective 'iiushing .action is difficult, Lii not impossible, `to gain since certain perfora- Ytions of 'theliner must "be relied upon to admit fluid into the well while others -are 'havingr .cir `culation kforced outwardly through them.

It is a general object o'f the `present invention 'to provideappa'ratus serving 'to mount a Aliner in a well and including a circulation controlactuated by a simple-operator v,or operating device 'or ltool so that circulation may normally ,occur in through `the per'forations of ,the ,liner while 9, i'reverse circulation through the perforations can be effectively established whenever desired by Apermitting .ow to occur from vthe well in .a manner to bypass the liner.

AnotherV object of the kpresent invention is to provide apparatus of the general character .referred to including [few simple, easily operated parts, rendering 'the structure practical, Aeffective and dependable. It is Va further object of the v`present invention toprovide a unique eiective apparatus involving a hanger, a circulation control and an operator or tool for the control cooperating .with a, fixed part at the 'hanger ,to enable `the user of .the equipment to manipulateitinthe desired manner with reference to the control.

'It "is Aanother object o'f the invention to pro- Vide a method of handling fluids "in a well jin such manner as to :gain veffective and desired circulation 'in reither direction l--through the per- `-forations ofva liner located'in the well. `vItis a -feature o`f the present invention that `lwhen cirroulationy is outward through the fperforations. Eiuid :at the exterior of the liner Rdoes not *have JID 'fas

:to zil'frw inward *through thjperforations of 7fthe liner, but is bypassed -to lenter the well f-without having Lentered 'through lfthe diner.

jlIhe *various objects Tand*features o'f `my iinvention `Wil 'vbe L'fully 4:understood from Ithe v'ffolloxiving ydetailed description of'fa VStypical fprfeferred form o'f apparatus :and atypical manner of carrying lout the method of my iin-vention, throughout 'which description reference is made *to `rthe accompanying drawings, in which:

l11 is a sectional -v'iew of -a typical =we1l zat the lowerend vportion thereof, lshowing la Ycasing 'set in the 4well and Ya'liner hung in the ivvell by 'means of the hanger Yincluded vin the apparatus of the present invention to depend below -the casing, the setting -device 'for Yoperating fthe hanger `v being shown yengaged therewith and the igripping units of the 'hanger :being shown -retracted Jready for operation. Fig. 2 vis -a =view :similar to VFig. l, showing the Vgripping -units *of nthe hanger engaged or vset xing the hanger in the casing, the Ysetting device having been removed. 3 'is a view oftheapparatus shown in Fig. y2 :with a portion broken away to illustrate 'the 4swab in operating position in fthe liner, Yillustrating the manner in which-a-swab vmay be operatedin the liner in a manner corresponding to that ordinarily employed Awith reference to 4a vwell liner. Fig. 4 isa View similar to Fig. 3 showing the operating vtool for the lcirculation control engaged in the apparatus and in one operating L'position 'therein which may, forexample, 4be the position employed when Athe circulation control is operating to the closeaiposition so that 'all flow from the Well must be through the liner. Fig. 5 is a view illustrating 'the apparatus ywith the operator or operating tool nremoved Jand the circulation control Vin `the vclosed position, in which case all well iiow is `through "the 4perforatedjliner and out of the .upper end'of the liner hanger to be conducted from the Well through the casing. Fig. 6 is a view "similar -to Fig. 4 v'but Showing the ,operator for vthe v circulation control in another operating position, Isuch "for example as maybe reguired to reverse the positioning of y'the control ,so that -it lis opened, allowing fow `from the Well to enter the casing through the control rather than, or-as well as, through 'the liner. Fig. 7 and Fig. 7are enlarged detailed sectional views showing the structure as Ait is run "into the 'well and'show- 'ing the Iequipment that is illustrated in Fig. 1 'of vvthe drawings, -and showing it *l positioned yas it isshown in Fig. 1 of lthe drawing. "Figpfisfa Iview fillustrating `the circulation control `posi-- by line II-II on Fig. 8. Figs. 12 and 13 are e'n-'rv l' larged detailed vertical sectional views taken..

as indicated by lines I2-I2 and `I3--I3 on Fig. l

11. Fig. 14 and Fig. 14a are sectional views similar to Fig. 8 of the drawings illustrating the'apparatus positioned as it appears in Fig. 4 of the parts, and particularly with reference to the liner.

In accordancewith the broader principles of the 4invention it is applicable to various well conditions and may be utilized in carrying out various operations as circumstances may require. In the particular case illustrated in Figs. 1, 2 and 3 I have shown a simple and typical well condition wherein there is a well bore A having a casing B set therein while a portion I of the well bore extends below the lower end of the casing. A liner C is set inthe well, preferably in the lower end portion of the casing B to depend therefrom and into the open hole at Il). The liner is shown supported by a liner hanger D and the present invention provides a setting device E cooperating with thehanger to engage or operate it as will be hereinafter described. The invention also provides a circulation control F governing or controlling flow through the apparatus as, for instance, 4from the liner or into the casing. Swabbing equipment H is provided to be employed as illustrated in Figs. 3 and 8 and an operator J is provided for the circulation control.

The casing B is shown set in the well in the usual manner as by means of cement in at II, and the liner C is shown or indicated as a simple typical liner which is an elongate tubular part provided with a plurality of small or 'ne perforations I2 designed to admit desired flow into the well while undesirable materials are checked or held back.

The liner hanger D is provided to support or to form a mounting for the liner so that it hangs or depends from the well casing B in the desired manner. The liner hanger may, in accordance with the broader principles of the invention, vary considerably in form and construction, as well as in mode of operation. However, it is preferred that it be of the form and construction which is described and claimed in my copending application entitled Liner Hanger and Actuator Therefore, iiled on even date herewith, Serial No.

' The particular liner hanger illustrated is characterized by an elongate tubular body I3, packing lmeans' I4 carried by the body, gripping units I5 vcarriedby the body, and control means I6 by which the action of the hanger is made responsive to the s ettingdevice E.

',lhefbgdy 11S .SehQWilaS made `111C demain 0f central section I1 which is a simple straight tubular part, a top or shoulder section I8 on the upper end of section II, and a bottom or stop section I 9 on the lower end of section II. The several sections of the body are preferably joined, as by threads or the like, so that they form a unitary structure or assembly carrying the packing means I4 and gripping units I5.

:The top or zshoulderA section@` I8 of the hanger Ibody is Shown threadedon the upper end of the main body section II and it is characterized by an internal upwardly facing shoulder 28 serving as an -abutmentagainst which the setting device operates or is engaged, and serving as a part in known position and with which the operator for the f circulating control cooperates. The body section I8 lhas an external downwardly facing shoulder 20 with which the packing means I4 cooperates. The packing means I4 is carried on the exterior of the body section I'I', preferably on the upper end portion thereof, to be adjacent the shoulder section I8. In the case illustrated the packing means involves an annular body of packing 2I surrounding the body section II engaging shoulder 20 of body section I8 and operated by a sleeve 22 slidably carried on the body section I1 at the lower end of the packing 2I. The structure is such that the packing ring 2| is normally collapsed or retracted as shown in Fig. '7 in which case it is clear of the casing B. However, when the sleeve 22 is operated, as by being moved upwardly or toward shoulder 2 the packing ring 2| is operated or expanded into sealing engagement with theinterior of casing B, as shown in Fig. 14 of the drawings. In accordance with the preferred'form of the invention one or more gripping units I5 is employed in carrying out the presentv invention and they are such as to be operated from a retracted position as shown in Fig. '7 Where they are clear of casing B to an operating'or set position such as is shown in Fig. 14, where they have gripping engagement with the casing. The particular gripping units illustrated in the drawings are of the type more fully described and claimed in my copending application entitled Gripper and Method of Making the Same, led on even date herewith, Serial No.

Each gripper unit I5 is characterized by a wedge 25 and gripping parts 26 cooperating with the wedge to be expanded or moved outwardly thereby into gripping engagement with the casing. In the particular form of gripper illustrated the parts 26 are adjacent turns or convolutions of a helically formed member, the exterior of which is Scored to present gripping teeth 21 while the interior slides on the wedge 25. The member forming the parts 26 is a resilient member, for example, a, spring normally tending to assume an expanded position where it grips the casing, as shown in Fig. 14. With this type of gripping construction one end of the member Vforming the parts 26 is secured to the wedge 25 while the other end'is secured to an anchor part 30. As shown in the drawings, lugs 3| are provided on the ends of the member forming the parts 26 to engage in openings in wedge 25 and anchor 30.

Where two gripper units I5 are employed, as shown in the drawings, it is preferred that there be an anchor ring 30 for the uppermost gripper unit, Whereas the section I9 of the hanger body may serve as the part to which one end of the gripper member of the lower unit may be attached. When this arrangementV is employed the anchor 3 0 furthe upper unit is preferably keyed to the wedge 25 of the lower Vgripper unit as by means of a key 32, so that the grippers are, in elect, in series. The control means I6 of the hanger is shown as including a, releasable fastener operating to hold one end of the series of gripper units, the other end being secured to the iixed body section I9 which may, in practice, be eiectively set against movement by a set screw 33. The means I6 is shown as involving a shear pin 34 carried in registering openings provided in the body section I1 and the unit formed by the sleeve 22 land the uppermost wedge member 25, which parts are integrally formed as clearly shown in the drawings. 'Ihe shear pin has an inwardly projecting part or head 35 that extends or projects into the interior of the hanger body.

Employing the structure just described the gripper units I5, which are in series, are operated to the retracted or collapsed position, as shown in Fig. '1, by rotating the uppermost wedge 25 on the body section I1 until the desired retracted condition of the spring gripping members is gained. With this positioning of parts the shear pin 34 isv arranged in place and the gripping units are thus releasably held retracted.

It is to be observed that with the construction just described failure of the shear pin 34 releases the wedge member' 25 of the uppermost gripper unit so that the sleeve 22 which is on or carried by this wedge part is free t shift toward shoulder 20 in a manner to compress the packing 2|. Furthermore, when the shear pin is released the units I are both freed so that the spring parts thereof forming the gripper parts 26 are free to expand to their normal position in which they vgrip the casing B. With the gripping parts eX- panded and in engagement with the casing, lowering of the structure causes the wedges 25 to engage behind the gripping parts setting them securely in the casing.

The setting device E best shown in Fig. '7 of the drawings is characterized by a stem 40 that may be carried by or on the lower end of a tubular operating string, or the like, a head 4I on the lower end of the stem 40, a coupler 42 carried by the stem and cooperating with the hanger, and a striker 43 carried by the head 4I to act upon shear pin 34.

The upper end portion of the stem 40 which may be joined to the lower end of an operating string in any suitable manner or through any suitable manner or through any suitable connection, is preferably polygonal, say for instance square, in cross sectional conguration and the coupler 42 is slidably engaged thereon to be free to move longitudinally thereof but cannot rotate thereon. The lower end portion 44 of the stem is reduced in size and carries a packer 45 which engages the interior of the coupler 42.

The coupler 42 is releasably coupled or engaged Vwith the upper end portion of the hanger body.

In the particular case illustrated it has a coarse external thread engaged in a coarsely threaded socket 45*au in the upper end of body section I8. The threaded engagement just referred to is preferably lefthanded and such that suitable lefthanded rotation of the string carrying the stem 40 causes the coupler to back out of the socket 45 freeing the setting device from the hanger. While the `coupler 42 is engaged with the body of the hanger as shown in Fig. 7 the head 4I of 'the hanger is engaged in the body section I1 supporting the striker 43 in position to operate the shear pin 34. A stop 46 is provided on the stem immediately above the head'4l fto seat on the shoulder 28 when the parts are assembled as shown in Fig. '7, and a bearing 41 is provided between the stop 46 and the lower end of the coupler and a shoulder 48 on the stem.

The head 4I of the setting device is shown as an enlargement threaded on the lower end of the stem 40 and it engages beneath the stop 46 and depends from the lower end of the stem. The striker 43 is carried by the head 4I and operates to break the shear pin 34. The striker is shown as including a tubular shank 49 carrying packing 50 at its upper end slidably engaged in the lower end of the stem 40, having a iiange 5I operating in a bore 52 vin the head, and having an enlargement or pin striking member 53 at its lowerv end. The pin striking member is below the lower end of the head 4I and is so located and proportioned as to be above the head 35 of the shear pin 34 so thatA as the striker is operated downwardly it engages the head 35 and breaks the shear pin. The striker is normally releasably held in an up or unactuated position by a shear pin 54 coupling the flange 5I and the head 4I and the downward movement of the striker relative to the head 4I is limited by the flange 5I cooperating with a flange 56 inthe lowerend portion of the head.

The stem portion 49 of the striker is tubular so that there is a flow passage 51 extending coinpletely through the striker from one end to the other The upper end of the ilow passage is provided with a seat 58 to receive a valve which may be a spherical member or ball 60 to be dropped through the operating stringv and through the stem 40 when it is desired to actuate the structure in order to eiect shearing of the pin 34. When the ball or valve 60 is dropped through the operating string it closes the passage 51 through the striker, whereupon pressure'may be applied to the upper end of the operating string, causing the shear pin 54 to fail, whereupon the striker moves downwardly wi'th'force suiiicient to break the shear pin 34.

The circulation control, the details of which will be apparent from consideration of Figs. 8 to 13, inclusive, on sheet 4 of the drawings, is shown as of the' formand construction which is described and claimed in my copending application entitled Circulating Unit and Actuator Therefo. vflled on even date herewith, Serial No. 53,337. It is to be understood, however, that the details of this portion of the Yapparatus may be varied widely without departing from the spirit of the present invention, as for example, this portion of the apparatus may be of the form or typewhich is subject of my copending application entitled on Circulation Control For Wells and Actuator Therefor, le'd on even date herewith, Serial No. 52,036, now Patent No. 2,616,503.

The particular circulation control shown in the drawings'is characterized by a central tubular body 10 which may be joined to the lower end of the hanger bo'dy by any suitable means, as for instance by a tubular coupler 1I. The particular body 10 shown is directly joined to the upper end of the liner C byv means of a threaded connection 12.

The circulation control further includes a valve sleeve 13 operating on the body 'so that it isshiftable relative thereto to move ports 14 and 15 into and out of register. In'the particular case illustrated there are circumferentially spaced ports 14 in the body 10 and a correspond- I ing` number and-f arrangement of yports 15 in the valve sleeve 13.. The arrangement and spacing of ports such that the sleeve can be operated relativeto the body between a position where the partsl register, as shown in Figs. 8 and 10, and aposition where the ports are out of register,V asl will be the caseV when the sleeve. 13 has been rotated through about 45'n4 in either direction from the position shown in Figs. 8V andv 10. In practice the valve sleeve. 13 may be. accurately seated on the exterior of' body 10 to properly'opcrate thereon and to provide a reasonably tight valve construction, .and if desired, packing means Y such asrings 'H may be incorporated in theconstruction, as shown in theY drawings. It will. be apparent that .when the ports I4 and 'I5 arein register, as shown in Figs. 8 and 10, eiective communication is established between the interior of the casing or the well borer and ther in.- terior of the body 10 whichmay bein free'communication with. theV upper end portion of the casing through the body'of the liner hanger.

The circulation control further includes mo'- tor means 80 operating to shift the valve sleeve in order to move the. ports. 15 into and. out of register with the ports 14. In the particular case illustrated where the sleeve 13: operates around the body 10 or, in other words, is rotatableV on the body to result inthe desired valve action, the motor means 80 may be any simple or suitable structure serving; to gain. the desired relative rotation between the sleeve andthe body. InV the particular case illustrated the motor means 80 is divided into two parts or units located at the ends of the valve sleeve 13 between the valve `sleeve and shoulder' members 8|. which are fixedl on the ends of the bodyy conning the valve sleeve and motor means onthe body.

Each motorI means involves a cylindrical extension 83- carried on orl extending from the sleeve valve. 13 and cooperating vanes 84: and 85 in the chamber 861 established between` the exterior of' body 10 and theinteriorof the cylinder; The cylinder 83 is shown overlapping the stop 8| at which point there may be a suitable seal 81. Vane 84` extendsl lengthwise throughout the length of chamberil` and is fixed on the interior of the cylinder 83 and has sliding engagement with the exterior of the body 10 with which it maybe sealed'by suitable: packings '88. The vane 85 is provided on the exterior of the body 10 and extends throughout-the length of' thechamber 86` and has sliding engagement: with the interior of cylinder 83' with which it maybe sealed by suitable packings 89. A pressurev inlet port `90- is provided in the body 19 communicating with chamberV 86 and a stop 9| isA provided. in the structureto limit'V rotation ofthe cylinder' valve assembly about the body 10. It is to'be observed from' the drawings that exhaust ports 92 are provided in the cylinders 83 allowing iiuidf to escapev from the chambers 86'when pressure greater' than well pressure isy admitted through ports 90'.

Fromanexamination of Figs. 9 and l'l'of'the drawings it willy be apparentA that the` units of the motor'means occurring at the two' ends of the sleeve valve 13 arev related so that when the ports 'I4 and 15 are in communication or are in registeras shown in Figs- 8 and 10; the parts'of the uppermost motor unit have vane 84 stopped against the stop 9| while the parts in the lowermost motor unit are related ready for operation so. that when iiuid pressure. is admitted through the portv 90 the cyIinder valve assembly will rotate about the: bodymoving vane 84 into engagement with stop 9|, in which position .the parts will be stopped'with the ports out of register.

The operator J for the circulation control F includes a stop 93 on a. tubular' operating string 94 and spaced packing elements 95. on the oper:- ating string 94 inY predetermined spaced relation to the stop 93 with the space between the packing 95 in communication with the interior of the operating string 94 through a port 95. The tubular operating string may bev full of iiuid and pressure may be applied. to such uid from the upper end of the operatingV string so that high pressure is available between the spaced packers 95. Through the present inventionthe shoulder 28 in the liner hanger which is in a fixed position relative to the ports of the circulation control is coordinated with the spacing of. the stop 93. and the spaced packers so that when the stop 93 is in engagement with the stop shoulder: 28 as shownv in Fig. 14.v of the drawings, the spaced packers 95 are opposite the lowermost unit of the motor mechanism of control F so that pressure from the operating string carrying the packers 95 is communicated to the lowermost unit of the motorv mechanism through its port'S and if thatA pressure is greater than the well pressure that motor mechanism is operated, with consequentc rotation of the valve sleeve 13 to. a position where the ports 14 and 15- are out of register. At any time after the mechanism has been operated in thevmanner just described, if it is desired to open the circulation control as by registeringl ports 'I4 and 15 the apparatus may be operated until the stop 93 engages the. shoulder 28 followed by lifting of the operating string 94 enoughto move thev spaced packers 95 to a position in body 18 opposite the upper unit ofV the motor mechanism, as shown in Fig. l5, so that pressure can beapplied to that unitA of the motor mechanism through its port 90 in a manner to operate it returning the valve sleeve to its original position, as shown in Fig. 8.

1t will be. apparent that with the apparatus provided by the; present invention effective swabbing or washing of the liner C may be gained by suitable operation of a swab assembly carried by a suitable-operating string or rod. In Fig. 8 of the drawings opposed swab rubbers 98 are shown carried by anY operating string. |08 so that they are within the liner C and flow is indicated issuing from the string H09 between the swab rubbers so that it flows out through perforations of the liner from which point it may flow up around the liner and out through the circulation control F.

In. accordance with the method of the present invention a perforated liner set in a well through a hanger is subject to control so that iluid from the well may ilow in through the perforations of the liner and up through the hanger and out 4through the casing, all in thefmanner vcommon to ordinary well practice, or flow from the well may be bypassed so thatit does not necessarily occur through the liner but rather is allowed to enter the casing through thev hanger without passing through the liner and while the liner is thus bypassed itl may be swabbed and ushing or cleaning fluid may be circulated out` through the perforations of the liner, as will be apparent from Fig. 8 of the drawings. Further, by my invention elements such as are included in theappara'tus hereinabove described are effectively oriented or positioned to gain the desired operation Iby actuatingthem into engagement with orrelaiinstance the agsigev ef tive to a knownflxefdpart inthe well, as for fixed shoulder provided in the liner hanger.

In employing the apparatusof the present invention andv in carrying `out the method, the liner hanger with the liner attached thereto may be lowered into the well to the desired point by means of the setting device, and with the flow control set so that the ports are either open or closed, as circumstances may require. With the hanger located the setting device maybe operated bymerely dropping the control valve or ball through the string handling the settingdevice to close the striker so that pressure may be applied to operate the striker so that the shear pin controlling the hanger is broken. With the hanger thus set the setting device may be disengaged from the hanger and removed from the well and the well swabbed or allowed to ow in the conventional manner. It is to be understood, of course, that in initiating ow or operation of the well swabbing may be employed and it will be apparent that by being able to gain well circulation either through the bypass or circulation control or through the liner, well action may be varied to the best advantage. With the structure provided by the present invention, and in carrying out the method, it is possible to open or close the circulation control whenever desired, operation of the control being such that it can be easily, quickly, and dependably carried out with simple, inexpensive equipment.

Having described only a typical preferred form of apparatus and manner of carrying out the method of my invention, I do not wish to be limited or restricted to the specific details herein set forth, but wish to reserve to myself any variations or modications that may appear to those skilled in the art and fall within the scope of the following claims.

Having described my invention, I claim:

1. Apparatus operable in a well casing including, a liner, a hanger supporting the liner and having a casing engaging packer, and a circulation control at the upper end of the liner including, a valve below the packer controlling ilow bes tween the exterior of the liner and the interior of the hanger and acting when closed to confine flow to the liner and when open acting to bypass the liner, and fluid pressure actuated means operating the valve.

2. In combination, a well casing, a liner, a hanger supporting the liner from the casing and having a casing engaging packer, and a circulation control at the upper end of the liner` including a valve operating while the packer seals With the casing between a closed position conning well ilow to the liner and an open position conducting well iiow to bypass the liner, and motor means confined to the control and operating to open and close the valve while the packer seals with the casing.

3. Apparatus operable in a well casing including, a liner, a hanger supporting the liner and having a casing engaging packer, a circulation .control at the upper end of the liner including,

a fluid pressure actuated valve acting when closed to confine flow to the liner and when open to byi pass the liner, and an operator engageable with the control to supply operating pressure thereto. 4. In combination, a well casing, a liner, a

4hanger supporting the liner from the casing and to conne weunwto ,the liner. ,and when @een conducting wellflow to bypass the linerfandan operator engageable with the control to operate the valve thereof and including, an element cooperating with the control tosupply fluid thereto, and a member extending through thecasing and carrying said element.

` 5. In combination, a liner, a hanger supporting the liner and having a casing engaging packer, a fluid pressure actuated circulation control at the upper end of the liner including a valveV acting when closed to conne flow to the liner and when open acting'to bypass the liner, and an operator engageable with the control to operate the valve including an element cooperating with the control toV supplyuid thereto, and a fluid-conducting member extending through the, `casing and carrying said element. i I

6. An assembly applicable to the lower end portion of a Well casing including, a liner, a liner hanger having a normally engaged casing engaging packer, and a circulation control including, a valve, and fluid pressure actuated means operating the valve, there being a stop in one element of the assembly, and an actuator including, a member extending to the assembly through the casing, and a part carried by said member and oriented relative to the control by said stop and delivering fluid from said member to the control.

'7. An assembly applicable to the lower end portion of a well casing including, a liner, a liner hanger having a normally engaged casing engaging packer, and a circulation control including, a valve, and fluid pressure actuated means operating the valve, there being a stop in the hanger, and an actuator including a member extending to the assembly through the casing and a part carried by said member and oriented relative to the control by said stop.

8. An assembly applicable to the lower end portion of a Well casing including, a liner, a liner hanger above the liner having a normally engaged casing engaging packer, and a circulation control between the liner and hanger and including, a sleeve valve, and fluid pressure actuated means operating the valve, there being a stop at the hanger, and an actuator including a tubular member extending to the assembly through the casing and a. part carried by said member and oriented relative to the control by said stop and delivering operating fluid from said member to the said means of the control.

9. A swab passing assembly applicable to a well casing including, a liner,v a tubular circulation control at the upper end of the liner and a tubular hanger supporting the liner through the control, the control including, a tubular body, a sleeve valve carried by the body, and a vane type motor carried by the body and operating the valve.

10. In combination, a liner, a hanger supporting the liner, a circulation control at the upper end of the liner including, a valve acting when closed to confine flow to the liner and when open acting to bypass the liner, and a vane type motor confined to the control and coupled with the valve to operate it.

11. A swab passing assembly applicable to a well casing including, a liner, a tubular circulation control at the upper end of the liner, and a tubular hanger supporting the liner through the control and having a casing engaging packer, the control including, a tubular body, a sleeve valve carried by the body, and a vane type motor carried by the body and operating the valve and operable by fluid from an actuator insertable It through the casing, the hanger'inciuding an orenting stop receiving an actuator and located in a predetermined xed position relative to the motor.

12. In combination, a liner, ak hanger supporting the liner, a circulation control at the upper end of the liner including, a body, Aa valve carried by the body and acting when closed to confine ow to the liner and .when open acting to bypass the liner, and a vane type motor carried by the body and operating the valve, the hanger including a stop in a predetermined position relative to the motor, and an operator for the motor including an operating string engageable through the casing, a part cooperating with the stop to be positioned thereby, and an element cooperating with the motor andpositioned relative thereto by said part.

ARTHUR L. ARMENI'ROUT.

:The following references are of recordin the.

le of this patent:

UNITED STATES PATENTS Number Name Date 2,168,735 Giistrap Aug. 8, 1939 2,310,572 Burns -...-u--f-u Feb. 9, 1943 2,318,167r Knowlton May 4, 1943 2,384,675 Hammer Sept. 11, 1945 2,397,199 Orr Mar. 26, 1946 2,431,751 Hayward Dec. 2, 1947 2,442,544 Johnson June 1, 1948

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