US3610336A

US3610336A - Landing nipple with locator and orienting means

Info

Publication number: US3610336A
Application number: US31138A
Authority: US
Inventors: Phillip S Sizer
Original assignee: Otis Engineering Corp
Current assignee: Halliburton Co
Priority date: 1970-04-23
Filing date: 1970-04-23
Publication date: 1971-10-05
Anticipated expiration: 1988-10-05

Abstract

A well tool for use in connection with offset landing nipples connected in a flow conductor of a pumpdown well installation, including a locator sub for connection with said landing nipple and a positioning tool for connection with the kick-over running or pulling tool assembly used to install and remove flow control devices in said landing nipples. The positioning tool has stop dogs engageable with an internal shoulder in the locator sub to prevent premature undesired movement of the kick-over running or pulling tool assembly from oriented position in said landing nipple until the flow control device has been installed or retrieved, whereupon the stop dogs may be released and the assembly withdrawn from the well. The positioning tool may be moved downwardly in the well past any number of offset landing nipples thereabove to a desired one of a plurality of such offset landing nipples, and then used to prevent premature undesired movement of the running or pulling tool assembly from such landing nipple.

Description

United States Patent 2,988,146 6/1961 Fredd n l66/1l7.$ 3,353,607 11/1967 Kinley .1 166/1 17.5 3,353,608 11/1967 Beebe etal. 166/117.S

Primary Examiner-James Al Leppink AuorneyE. Hastings Ackley ABSTRACT: A well tool for use in connection with offset landing nipples connected in a flow conductor ol'a pumpdown well installation, including a locator sub for connection with said landing nipple and a positioning tool for connection with the kick-over running or pulling tool assembly used to install and remove flow control devices in said landing nipples. The positioning tool has stop dogs engageable with an internal shoulder in the loeator sub to prevent premature undesired movement of the kick-over running or pulling tool assembly from oriented position in said landing nipple until the flow control device has been installed or retrieved, whereupon the stop dogs may be released and the assembly withdrawn from the well. The positioning tool may be moved downwardly in the well past any number of offset landing nipples thereabove to a desired one of a plurality of such offset landing nipples, and then used to prevent premature undesired movement of the running or pulling tool assembly from such landing nipple,

PATENIEDUU 519m 3.610.336

SHFET 1 (1F 8 4 K .11 &

I I I l l l INVENTOR. I PHILLIP S. SZER t LtLL BY I /flAtiyn MW ATTORNEY PATENTEU um 519m SHEET 2 BF 8 F I G 3 B INVENTOR.

PHILLIP S- SIZER ATTORNEY PATENTED 081 5 WI SHEET 3 BF 8 I N VENTOR.

PHILLIP s. SIZEH BY I W ATTORNEY PATENTED GET 5 MI SHEET 7 OF 8 INVENTOR.

PHILLIP S. SIZER AT TORNE FIG.6

PATENTEU 0m 5197: 3.610.386

BY 4 r ATTORNE LANDING NIPPLE WII'II LOCATOR AND ORIENTING MEANS This invention relates to new and useful improvements in well tools, and more particularly to a tool for running and retrieving a well flow control device by means of the pump down procedure.

The invention is directed particularly to a running too] for use with side pocket" type landing nipples, in which a receptible is dispmed in a section of flow conductor in a position offset laterally from the continuous axial bore of the flow conductor, for assuring that the running tool or retrieving tool functions as desired.

A particular object of the invention is to provide in a running and retrieving tool assembly for use with an offset mandrel-type well device, means for indicating to the operator that the running or retrieving tool assembly has functioned at the location at which it is being operated, to enable the operator to repeat the setting or retrieving operation in the event of an apparent failure or malfunction of the tool assembly on a previous attempt, without withdrawing and rerunning the em tire string of tools in the flow conductor.

A particular object of the invention is to provide in combination with a standard ofiset landing nipple and running and retrieving tool for use with such nipple, a positioning or locator sub having an internal projecting shoulder or flange provided in its bore, and a positioning tool connected with the running and retrieving tool having means coengageable with said shoulder or flange in said locator sub for retaining the running and retrieving tool in position to function to run or retrieve a well tool in the side pocket of the offset landing nipple, for limiting the upward movement of the running or retrieving tool with respect to the offset mandrel or landing nipple until a predetermined force has been applied to said positioning tool; or until an indication has been received by the operator at the well surface that the running or retrieving tool has accomplished the setting or releasing of the well tool in the offset pocket of the landing nipple; or until it becomes apparent to the operator that such operation cannot be effected at such time.

Another object of the invention is to provide in such a device a positioning tool having stop means engageable with said stop shoulder for preventing movement of the assembly in one direction, and means for releasing said stop means engageable with the shoulder of the locator sub to permit the positioning means to pass the internal shoulder of the locator sub.

Still another object of the invention is to provide a locator sub for attachment to a standard ofiset or side pocket type landing nipple and a positioning tool for attachment to a running and retrieving tool for installing or retrieving of a well flow control in such offset landing nipple, which sub and positioning tool provide means for conversion of the standard offset landing nipple and running and retrieving tool assembly to the improved model of this invention, particularly designed for use in pumpdown well installations; and such offset landing nipple and running and retrieving tool assembly may be a commercial design presently in use whether standard or not.

Still another object of the invention is to provide a locator sub for use with an offset landing nipple having an orienting structure incorporated therein and a positioning tool for use with a running and retrieving tool assembly incorporating a kick-over mechanism designed for coaction with said orienting structure to orient the well flow control device to be positioned in the laterally offset pocket of the offset landing nipple, which sub and positioning tool structure is designed for use with pumpdown operating equipment in wells having a U- tube type pumpdown installation therein.

A further object of the invention is to provide a method of operating a running and retrieving tool having a kick-over mechanism of the type described in a pumpdown well installation and having incorporated therein means for assuring that the running or retrieving tool has functioned before circulating the string of running or retrieving tools out of the well.

SUMMARY OF THE INVENTION The invention is therefore directed to a locator sub and positioning tool assembly adapted to be connected to a laterally offset landing nipple and kick-over type running and retrieving tools for use with such landing nipple to assure maintaining the kick-over running and pulling tools in position at a desired laterally offset landing nipple until it is determined that the operation being performed has been completed before withdrawing or flowing the positioning tool and the kickover tool and its associated running or pulling tool from within the laterally offset landing nipple housing, thus eliminating the inadvenent and undesirable premature withdrawal and necessary rerunning of the string of tools to complete the operation.

Additional objects and advantages of the invention will be readily apparent from the reading of the following description of a device constructed in accordance with the invention, and reference to the accompanying drawings thereof, wherein:

FIG. I is a schematic view of a well installation having a pair of side-by-side flow conductors connected in U-tube configuration for conducting pumpdown well operations therein, and showing a pair of longitudinally spaced offset type landing nipples connected in one of the flow conductors, and a kick-over tool and running tool assembly for setting a well flow control device in a selected one of the offset landing nipples;

FIG. 2 is an enlarged fragmentary view of the upper portion of the running tool string showing a positioning tool and locator sub with the positioning tool passing through the internal flange of the locator sub as the same moves downwardly in the well flow conductor;

FIG. 3A is a view of the upper end of the string of tools shown in FIG. 1 showing the positioning tool after it has passed the internal flange of the locator sub;

FIG. 3B is a downward continuation of FIG. 3A showing the orienting mechanism and orienting structure of the landing nipple and the kick-over tool;

FIG. 3C is a downward continuation of FIG. 38 showing the kick-over portion of the kick-over tool and the setting tool with the upper portion of the flow control device;

FIG. 3D is a downward continuation of FIG. 3C and shows laterally offset pocket of the landing nipple and a fragmentary view of the lower portion of the flow control device showing the same in position to be moved into the laterally offset pocket of the landing nipple;

FIG. 35 is a downward continuation of FIG. 30 and shows the lower portion of the string of setting tools extending alongside and below the laterally offset pocket of the landing nipple for maintaining the kick-over tool in position for shifting the flow control device in the laterally offset pocket of the landing nipple;

FIGS. 4A, 4B and 4C are views similar to FIGS. 38, 3C and 3D showing the orienting lug of the running tool assembly engaged in the orienting can slot of the orienting sleeve, and the kick-over tool actuated to swing the flow control device into position above and in alignment with the laterally offset pocket of the landing nipple for insertion thereinto;

FIGS. 5A and 5B show the positioning tool above the kickover tool engaged with the internal flange or shoulder of the locator sub to prevent inadvertent movement of the kick-over tool and associated running tool out of position in the landing nipple. FIG. 58 showing the orienting lug cammed inwardly out of engagement with the orienting cam slot;

FIG. 6 shows the positioning tool with the shear pin holding the stop-ring against movement sheared to permit the stopring to move downwardly on the mandrel of the positioning tool to free to the stop dogs of the positioning tool for passing the internal flange or stop shoulder of the locator sub to permit withdrawal of the running tool assembly from the well;

FIG. 7 is a sectional view taken on the line 8-8 of FIG. 3A,

FIG. 8 is a side elevation view of the orienting sleeve disposed in the upper end of the offset landing nipple;

FIG. 9 is a fragmentary elevation of the kick-over tool showing the orienting dog of the kick-over tool taken along the line 9-9 of FIG. 3B; and,

FIG. is a fragmentary elevation taken along the line 10-- ll) of FIG. 3C.

In the drawings. FIG. 1, a dual string well installation is illustrated wherein the well casing C extends downwardly from the surface of the well through the producing formations in the earth. Within the casing is disposed at U-tube pumpdown type tubing flow string assembly comprising a first tubing string T1 and a second tubing string T2 connected at a point near the lowermost producing formation by a crossover connection X. The usual well head valve flow control systems V1 and V2 are schematically illustrated at the upper end of the tubing strings TI and T2, respectively, for controlling flow into and out of said tubing strings. A plurality of longitudinally spaced landing nipples N1 and N2 are shown connected in the tubing string T1, and each of said landing nipples has a laterally offset section OI and 02, respectively, at the lower end of which is formed a side pocket landing receptible S1 and S2, respectively, adapted to receive a flow control device for controlling fluid flow through an inlet port or aperture section A! and A2, respectively, between the interior and exterior of the landing nipples.

The system shown is adapted for pumpdown tool operation by means of which well tools may be inserted into and removed from the tubing strings T1 and T2 by circulation of fluids through the tubing strings by way of the crossover fitting X at the lower portion of the tubing strings. As shown in FIG. I, a pumpdown running tool assembly R having a fluid pressure operated locomotive piston P is used for lowering a flow control device F downwardly in the tubing string toward the lower landing nipple N! to he landed therein.

A locator device L is connected in the running tool string R between the piston P and a kick-over tool K, to the lower end of which is connected a setting tool D which is releasably connected to the upper end of the flow control device F in the usual manner.

When the string of running tools has reached a point below the lower landing nipple N1, the string of tools is moved back upwardly in the tubing string Tl until a projecting orienting guide dog G engages a cam surface of a mule shoe camming member M disposed in the upper end of the landing nipple N1 above the upper end of the offset portion 01 of such nipple. The engagement of the guide dog G turns the kick-over tool K into a position in which the flow control device F connected to the running tool at the lower end of the kick-over tool will be swung laterally outwardly to overlie and register with the side pocket receptacle S1, whereupon further downward movement of the string of running tools R will move the flow control device into the side pocket S1 for locking therein to control fluid flow inwardly or outwardly through the aperture Al, as will be explained more fully hereinafier.

Obviously, a retrieving tool may be attached to the lower end of the running tool assembly R for engagement with the upper end of the flow control device F to remove the device from its position within the side pocket receptacle SI when it is desired to do so. Also, it is obvious that the flow control device F can be located in any one of several vertically spaced landing nipples N1, N2, etc., connected in the tubing string T2.

During the movement of the string of tools into the well the holddown dogs H of the locator tool L will earn inwardly to pass any restrictions encountered in the bore of the tubing string T1 or in the landing nipples N1, N2, etc.

The details of the locator tool L, the kick-over tool K and the setting tool D are shown in FIGS. 30 through 3E, inclusive.

The pumpdown locomotive P may be of the type illustrated in the patent to N. F. Brown, 3,419,074, issued Dec. 3], I968, and is connected to the upper end of the running tool assembly R by means of a quick coupler Q of the type shown in said patent to Brown. A portion of the coupler Q is shown at the upper end of FIG. 3A, and has a pair of coupling members l9 resiliently biased into longitudinal parallel side-by-side relationship by means of a spring 18 and provided with connecting bosses 20 on their ends which are disposed to engage within the bore receptacle 2] of a socket member 25 threaded onto the upper end of the mandrel 30 of the locator tool L.

The elongate mandrel 30 of the locator tool threaded into the lower end of the socket member 25 at its upper end has a threaded box 3] at its lower end to which the pin 400 at the upper end of a connector sub 40 of the kick-over tool K is threadedly connected. An external annular flange 32 is formed on the lower portion of the mandrel 30 above the box 31, and an elongate tubular carrier sleeve 33 is slidable on the mandrel below the socket member 25 and above a stop ring 34 which is secured by means of a shear pin 35 extending through aligned transverse apertures 35a in the mandrel and 35b in the ring. The stop ring limits downward movement of the carrier sleeve 33, which is biased toward said stop ring by a helical coil spring 36 confined between the upper end of the carrier sleeve and the lower end of the socket member. A transverse opening 35: is formed in the mandrel below the aperture 35b and above the external flange 32 to provide means for removing and replacing the sheared portions of the shear pin 35 after the same has been sheared.

A plurality of radially expansible and retractable locator lugs 37 are slidable in circumferentially spaced apertures 38 formed in the midportion of the carrier sleeve 33, as clearly shown in FIGS. 3A and 7. The bore of the carrier sleeve is enlarged throughout the vertical length of the apertures 38, as clearly shown in FIG. 7 to receive the laterally projecting wings 37a of the locking lugs 37, to prevent displacement of the lugs outwardly from the apertures 38 in the locator sleeve. An internal annular stop flange 39 is formed at the upper end of the bore of the locator sleeve and acts as a guide for the upper end portion of the sleeve by engaging the upper portion of the mandrel 30. A pair of upper and lower longitudinally spaced annular relief grooves or recessed 30a and 30b, respectively, are provided in the periphery of the mandrel intermediate its ends and the external cylindrical surface of the mandrel between the relief grooves provides a lug expander and locking section 30c which engages the inner surfaces of the locator lugs 37 to hold the same in the expanded projecting position shown in FIG. 3A. The upper and lower inner edge surfaces of the locator lugs are beveled to facilitate passing the beveled shoulders at the upper and lower ends of the expander surface section 30c. The outer upper and lower end surfaces of the locator lugs are also beveled to facilitate passage of inwardly projecting flanges or shoulders in the tubing string or landing nipple. When the locator tool is being lowered into the well the tubing string Tl, the lower edge su rfaces of the lugs 37 will engage upwardly facing obstructions in the tubing string and move the sleeve 33 upwardly against the biasing force of the spring 36 to position the dogs 37 in registry with the upper relief groove 30a to permit the lugs to be cammed inwardly past such obstruction, as shown in FIG. 2.

Upon upward movement of the locator tool in the well tubing string or landing nipple, the beveled upper end surfaces of the locator lugs 37 will engage against downwardly facing shoulders of such obstructions to prevent upward movement of the locator device past such obstructions until the shear pin 35 is sheared, whereupon the sleeve 33 may move downwardly to position the locator lugs 37 in registry with the lower relief groove 30b to permit the lugs to cam inwardly to retracted position to pass such obstructions or shoulders.

The kick-over tool K includes an elongate tubular housing or body 41 connected at its upper to the lower end of the connector sub 40 and extending downwardly therefrom. The tubular body 41 is formed of an upper tubular body section 42, a central tubular body section 43 and a lower tubular body section 44 having a pointed lower end 45 provided with apertures 46 which permit fluid flow into the bore of the tubular body member. The several sections of the tubular body member are joined together by screw threads 42a between the upper body section 42 and the central body section 43 and screw threads 434 between the central body section 43 and the lower body section 44.

The orienting guide dog G is in the form of an elongate swingable dog or catch member 50 which is pivoted at its lower end by means of a pivot pin 51 to a cylindrical dog carrier 52 slidable in the bore of the upper housing section 42. The cylindrical carrier 52 is provided with an elongate substantially diametrical laterally open slot 53 having parallel planar sides between which the guide dog G is swingably mounted. The guide dog has an upper laterally offset stop portion 54- having a stop shoulder 55 at its upper end, and a resilient leaf spring 56 'a secured by screws 57 to the lower portion of the dog or catch member and bears against the bottom of the slot 53 opposite the lateral opening to pivot the upper outer stop portion 54 of the dog outwardly of the slot through a lateral aperture or window 61 formed in the upper portion of the upper tubular housing section 42. The lower portion of the dog carrier 52 is provided with an axial counterbore 58 and an aperture 59 communicates said counterbore 58 with the slot 53 in the upper portion of the carrier whereby the fluids may freely flow therebetween. Also, if desired, a longitudinal slot 60 may be provided in the periphery of the cylindrical carrier member 52 extending from end to end diametrically opposite the laterally open position of the slot 53 to provide additional an bypass passage between the opposite end of the carrier member within the bore of the upper housing section. The inner portion 540 of the guide dog member 50 is cut away to provide relief to permit the dog to swing fully inwardly into the slot 53, as will be hereinafter more fully described.

The helical coil spring 62 is confined between the lower end of the guide dog carrier 52 and an upwardly facing shoulder 63 formed in the lower portion of the bore of the upper housing section 42, and this spring biases the carrier upwardly within the upper section 42 of the tubular housing 41 until the upper end of the carrier engages the lower end of the connector sub 40 at the upper end of said housing.

An elongate lock member 65 is disposed within the bore of the central housing section 43, and the upper end of said lock member extends upwardly into the counterbore 58 in the lower end of the guide lug carrier 52 and is secured to said carrier by means of a shear pin 66 extending diametrically through the upper end of the lock member 65 and the lower end of the guide lug carrier 52 to prevent longitudinal movement between said members. The lower end of the lock member 65 has a substantially semicylindrical downward extension or depending leg 67 at its lower end formed with a foot or stop boss 68 projecting laterally thereof as shown in FIG. 3-C.

The reduced lower end portion 42b of the upper housing section 42 is externally threaded as at 420 and is provided with a bore 42c in which the lower portion of the kick-over lock member 65 is slidable and the lower end portion of the reduced portion 42b of the upper housing section 42 is slotted or bifurcated at 42d and receives the upper projecting lug end section 70 of a kick-over mandrel 71, which is formed with parallel flats on opposite sides to provide a substantially rectangular section engageable within the bifurcated opening 424' at the lower end of the upper housing section. This projecting lug end portion 70 is hinged by means ofa hinge pin 72 between the legs at the bifurcated lower end opening 42d of the upper housing section. so that the mandrel 71 is swingably supported by the hinge pin. The upper projecting lug portion 70 of the mandrel 71 has a laterally offset longitudinally upwardly extending finger 73 through which a threaded stop screw pin 75 is adjustably secured. The inner reduced end 76 of the stop screw pin engages the projecting boss 68 at the lower end of the lock member 65 and, by adjusting the position of the screw 75, the mandrel 71 may be disposed in longitudinal axial alignment with the lock member 65 and within the bore 43b of the central housing section 43. The upper portion of central housing section is cut away through substantially half its width to provide a semicircular elongate open section 78 within which the mandrel 71 of the kick-over tool is swingable into and out of such section. The lower portion of the cutaway opening 78 extends downwardly below the lowermost position at which the well tool F is disposed when the well tool is connected to the setting tool D'which is connected by a screw threaded pin 81 to a threaded box 82 formed in the lower end of a pivot or knuckle member 83 connected by a hinge pin 84 to the bifurcated lower end 78 ot' the mandrel 71. The knuckle member 83 is maintained in longitudinal axial alignment with the kick-over mandrel 71 and the lock member 65 by means of a shear pin 85 which extends through aligned apertures in the reduced flattened upper end or lug portion of the knuckle member 83 and legs of the bifurcated lower end 78 of the kick-over mandrel 71. The setting tool D has an elongate body provided with a bore 91 into which the upper end of the lock mandrel of the flow control device F is inserted and held in place therein by means of shear pins 92 in the usual manner.

The lower portion of the central housing section 43 and the entire lower section 44 of the housing are disposed to engage the bore wall of the landing nipple Nl at its lower end. or to engage the bore wall of the tubing Tl therebelow, to hold the housing of the kick-over tool in axial alignment with the tubing and to permit the operation of the kicltover tool to set the flow control device F in the manner which will now be described. The housing may also engage the inner external surface of the tubular side pocket receptacle 8] as shown in FIG. 3-D. The cutaway open portion 78 of the central section 43 of the housing 4! is oriented with respect to the guide lug member 50 by turning the central housing section on the threads 4241 at the lower end of the upper housing section 42 to dispose the cutaway portion diametrically opposite but longitudinally spaced from the laterally projecting portion 54 of the lug member, and a locking collar 43b threaded on the lower end of the upper section just above the upper end of the central section is turned on such threads to engage the upper end of such central housing section to lock the same in such oriented position.

The side pocket mandrel or receptacle S1 is in the form of a housing having a bore 111 with a central enlargement l 12 which communicates with the aperture section A formed by the plurality of ports 113 formed in the wall of the receptacle and the landing nipple to provide fluid access from exteriorly of the landing nipple to the bore of the receptacle. Above the cylindrical housing portion of the receptacle, the landing nipple N1 is formed with a semicircular inwardly projecting lock shoulder 115 which is adapted to be engaged by the locking ring 121 of the flow control device F. The locking ring 12! is slidable on the upper end of the mandrel 100 of the flow control device and is biased downwardly on the mandrel between a reduced upper portion 122a and a lower enlarged locking portion 122. Above the lock portion 122 of the mandrel 100. the reduced diameter upper portion 122a permits the lock ring 121 to move laterally when the ring is moved upwardly on the mandrel by its engagement with the lock shoulder 115. The spring 123 biases the lock ring downwardly over the enlarged lock portion 122 to move the lock ring into position to engage the shoulder 115 to prevent displacement of the well flow control device F from the bore 111 of the side pocket receptacle. Seal means 124 and 125 are provided on the flow control mandrel 100 to seal with the wall of the bore 111 of the receptacle above and below the ports [13 and direct fluids flowing inwardly through the ports into the flow control device for control thereby.

The kick-over mandrel 71 is provided with a plurality of diametrical apertures 85 within each of which is disposed in plunger 86 pressed by springs 87 to project outwardly through apertures 85 to engage the inner wall 43b of the central housing section 43 to bias the kick-over mandrel 71 outwardly, pivoting the mandrel about the pin 72 to swing the flow control device F laterally of the landing nipple N1 to substantial alignment with the open upper end of the bore 111 of the side pocket receptacle 8!. The plungers 86 have rounded noses on their outer ends and annular flanges 860 on their inner ends which are slidable in the enlarged bore 85a of the apertures. Helical springs 87 are confined between the flanged ends of the plungers and a cover member 88 which is disposed in a recess 89 in the kick-over mandrel 71 covering the ends of the enlarged bores 85a of the apertures and holding the springs 87 in place in such bores to bias the plungers outwardly. The cover is secured in place on the mandrel by screws 88a which extend through openings 88c in the cover plates and into threaded openings 88b in the mandrel.

ln use, when the running tool assembly R has been moved into the mandrel N] by means of the piston locomotive P to position the guide lug below the orienting cam mule shoe M, the laterally outwardly biased upper lateral projecting portion 54 of the guide lug G is moved out to engage the wall of the bore of mandrel and the stop shoulder 55 at the upper end of the guide lug is disposed to engage the downwardly facing upwardly extending arcuate cammed surface 130 on the lower end of the cylindrical mule shoe guide member 131 secured by welds 132 in the upper portion of the bore of the landing nipple NI. As shown in FIG. 9, the camming guide surface 130 of the mule shoe cam member l3l has a pointed lower end 133 from which the camming surfaces 130 extend divergently upwardly to a longitudinal orienting slot 134 which is positioned diametrically opposite and longitudinally spaced from the side pocket receptacle SI. whereby when the locating orienting guide lug G enters the orienting slot 134 and moves upwardly therein the kick-over mandrel 71 is disposed in position for the plungers 86 to bias the lower end of the kick-over mandrel, the setting tool D and the flow control device F carried thereby outwardly laterally toward the upper end of the receptacle SI. When the stop shoulder 55 at the upper end of the guide lug 50 engages the upper end 135 of the orienting slot I34, further upward movement of the guide lug is stopped. Continued upward movement of the piston locomotive P will pull the connector sub 40 and the tubular housing 41 upwardly therethrough and compress the helical coil spring 62 to permit the reduced projecting end 76 of the stop pin 75 at the upper end of the upwardly extending arm 73 of the kick-over mandrel 71 to move upwardly above the boss 68 on the lower end of the lock member 65 with which said stop pin 75 is engaged. The stop pin may then swing laterally toward the downwardly extending leg 67 of the lock member about the pivot pin 72, the plungers 86 forcing the mandrel 71 to swing as a result of the biasing force of the springs 87.

The kick-over mandrel 71 and the flow control device F will thus be swung to the position shown in FIGS. 4H and 4-C, and the piston locomotive P may then be moved downwardly by fluid pressure to move the flow control device F into the open upper end of the bore 111 of the offset side pocket receptacle S], the pointed lower end 126 of the flow control device guiding the flow control device into such bore. As the flow control device enters the bore 111 of the side pocket receptacle it will tend to assume a position in axial alignment with the bore and will shear the shear pin 85 to permit the knuckle member 83 to swing about the hinge pin 84 to position the flow control device in axial alignment with the bore of the side pocket receptacle, whereupon further downward movement of the running tool assembly R will move the flow control device into the bore of the nipple and engage the locking ring I21 beneath the lock shoulder ll5. When the lock ring is engaged beneath the shoulder, upward movement of the running tool assembly R will shear the pins 92 to disconnect the setting tool D from the flow control device F for withdrawal of the running tool assembly from within the tubing string Tl.

Continued upward movement of the tubular housing 41 and the guide lug G will again bring the stop shoulder 55 at the upper end of the guide lug into engagement with the shoulder at the upper end 135 of the orienting slot 134 in the mule shoe guide member 131. Such engagement will stop upward movement of the carrier member 52, whereupon further upward movement of the locomotive and the housing 41 will shear the shear pin 66 and permit the housing 41 to move upwardly until the camming shoulder 610 at the lower end of the slot 61 in the upper housing section 42 engages the inclined downwardly facing camming surface 54b on the lug member 50 of the guide lug G to swing the guide lug about the hinge pin 51 and move the stop shoulder 55 at the upper end of the guide lug out of engagement with the shoulder at the upper end of the orienting slot 135, whereupon the string of running tools with the kick-over tool and the setting tool may be moved further upwardly in the tubing string Tl. When the guide lug G engages the guide orienting mule shoe M of the upper landing nipple N2, the same camming action takes place with respect to the guide lug G, and the entire string of tools may be flowed or removed from the tubing string in the usual manner.

In use of the running tool assembly R with the pumpdown tool locomotive P, large forces are developed and applied to the running tool assemblies. In such event, even though the stop shoulder 55 at the upper end of the guide lug 50 is engaged with the downwardly facing stop shoulder I35 at the upper end of the orienting alot 134 of the orienting mule shoe M, a sufficient force may be applied to the housing 41 of the kick-over tool to shear the shear pin 66 and permit the guide lug G to be cammed inwardly out of such stopping engagement with the shoulder of the orienting mule shoe and the string of tools to be withdrawn from the landing nipple N1, and, as a result prevent further oriented kick-over setting operation of the running tool assembly.

It is to preclude the undesired shearing of the shear pin 66 by means of the fluid operated locomotive P that the locator holddown device H of this invention is provided in the string of running tools R.

When the guide lug G is engaged with the shoulder 135 of the orienting slot 134, the holddown lugs 37 of the holddown locator device L are disposed a distance below an internal annular shoulder flange provided in the upper end of the bore of the locator nipple threaded at its lower end 146 into the threaded upper end of the bore of the landing nipple N1. The flange 140 provides a beveled stop shoulder 141 which is engaged by the beveled upper outer ends of the holddown lugs 37 to prevent upward movement of the holddown device L and of the housing 41 of the kick-over tool when so engaged. The spacing of the holddown lugs 37 from the shoulder 14] is substantially equal to the distance the housing 4] will travel upwardly to move the reduced end of the locking pin 75 out of engagement with the boss 68 on the lock member 65 to permit the kick-over mandrel 71 to be swung laterally to position the flow control device for entry into the offset side pocket receptacle S1. The distance between the upper beveled ends of the holddown lugs 37 and the stop shoulder 141 at the lower end of the flange 140 and the nipple 145 should be only slightly greater than the distance required for the freeing of the kickover mandrel 7] for swinging movement about the pivot pin 72 and should be less than the distance which the tubular housing 41 must move to shear the shear pins 66 and move the cam surfaces 614 at the lower end of the slot 61 in the upper housing section 42 into camming engagement with the cam surface 54b of the guide lug, so that the guide lug will remain in holding engagement with the stop shoulder 135 at the upper end of the orienting slot 134 and will not be cammed out of such engagement until alter the holddown lugs 37 have engaged the downwardly facing shoulder 141. This prevents accidental and unintentional and undesired releasing movement of the guide lug G from engagement with the stop shoulder 135 in the orienting slot until the kick-over tool has been actuated to swing the flow control device in the position for insertion in the side pocket receptacle 8!.

After the flow control device has been disposed in the side pocket mandrel and it is desired to remove the string of running tools R from the well the tubing string T1, the pumpdown locomotive or piston P is moved upwardly to shear the pin 66 and move the holddown lugs 37 into engagement with the shoulder l4l as shown in FIG. S-A. Further upward movement of the locomotive piston will move the mandrel 30 of the holddown device L upwardly with respect to the carrier sleeve 33 and cause the shear pin 35 to be sheared and the stop ring 34 to be moved downwardly on the mandrel 30 to engage the upwardly facing shoulder at the upper end of the external annular flange 32 on the mandrel. In this position, the holddown lugs 37 are registered with the lower relief groove 30b and may be cammed inwardly of said relief groove to retracted position to permit the lugs to pass the flange 140 and the tools to be withdrawn from the well.

It will be seen, therefore, that a holddown device has been illustrated and described which is arranged to coact with the kiclt-over running tool assembly of a string of pumpdown running tools for nmning a flow control device into a landing nipple having a laterally offset side pocket receptacle S1 therein. The holddown device prevents accidental and undesired releasing of the guide lug from the stop shoulder of the camming mule shoe until it has been determined that the flow control device has been properly seated in the side pocket receptacle The shear pin 35 of the holddown device is of substantially greater shear strength than the shear pin 66 of the kick-over and, therefore, a substantially larger force may be applied to the string of tools without camming the guide lug G out of holding engagement with the stop shoulder 135 in the orienting slot, This permits use of the running too] assembly with pumpdown locomotive type tools for running the same into and out of pumpdown type well installation, and provides means for assuring that the kick-over tool is operated without the necessity of withdrawing the string of running tools from the well, redressing the tools with shear pins and the like and rerunning the string into the well to locate the flow control device in the side pocket receptacle. This not only saves time but considerable money since the cost of running the tools into and out of the well is quite large, particularly in remote locations such as under water or submarine type wells where the surface portion of the flow string is located at a great distance from the subsurface well bore.

The foregoing description of the invention is explanatory only, and changes in the details of the constructions illustrated may be made by those skilled in the art, within the scope of the appended claims, without departing from the spirit of the invention.

What is claimed and desired to be secured by Letters Patent I. A well tool for use in connection with a housing adapted to be connected in a well flow conductor and having a flow passage therethrough in substantial axial alignment with the flow passage of said well flow conductor and a laterally ofi'set landing nipple for a flow control device, and a running tool assembly for installing or removing a flow control device in said laterally offset landing nipple including a kick-over tool, and wherein coengageable orienting means is provided in said housing and on said running tool assembly cooperable to orient said kick-over tool to direct said well flow control device into or to retrieve it out of said laterally offset landing nipple by means of said running tool assembly, said well tool including: a locator sub having means for connecting it to said housing and having internal stop shoulder means disposed in predetennined spaced relation with respect to said orienting means of said housing; positioning tool means connected with said running tool assembly and having stop means thereon engageable with said stop shoulder means in said locator sub for retaining said running tool assembly in position in said housing; and means for releasing said stop means upon application of a predetermined force thereto for movement of said stop means past said stop shoulder to permit said running too] assembly to be moved out of said housing.

2. A well tool for use in a well having a flow conductor therein forming one of at least a pair of flow conducting passages in said well connected in flow communication at a subsurface point in said well and wherein at least one housing is connected in said flow conductor at a location intermediate the surface and the point of flow communication between the flow conductor and the other of said flow conducting passages, said housing having a flow passage in substantial axial alignment with the flow passage of said flow conductor, a laterally ofl'set landing nipple for a flow control device, orienting means and stop shoulder means, said well tool including: a running tool assembly for installing or removing a flow control device in said laterally offset landing nipple in said housing; means on said running tool assembly engageable with said orienting means of said housing for directing said flow control device into or out of said laterally offset landing nipple; fluid pressure operated locomotive means connected with said running tool assembly for moving the same through the flow passage of said flow conductor; stop means on said running tool assembly coengageable with said stop shoulder means of said housing for retaining said running tool assembly in position in said housing; and means for releasing said stop means of said running tool assembly upon application of a predetermined force thereto for movement of said stop means past said stop shoulder means to permit withdrawal of said running too] assembly from said housing.

3. A well too] for use in a well having a first tubing string and a second tubing string disposed in side-by-side parallel relation in said well, and a crossflow passage connecting said first and second tubing strings below the surface of the well communicating the lower portions of said first and second tubing strings to provide a U-tube flow path in said well; said first tubing string having at least one housing connecwd therein between the surface and said crossflow passage, said housing having a longitudinal flow passage therethrough in substantial axial alignment with the flow passage of said first tubing string, a laterally offset landing nipple pocket for a flow control device, orienting means disposed in predetermined circumferential position with respect to said laterally offset landing nipple pocket, and stop shoulder means disposed in predetermined longitudinally spaced relation with respect to said orienting means; said well tool including: a running tool assembly for running and retrieving a flow control device in said housing including a kick-over tool for moving said flow control device laterally of said housing; means on said running tool assembly engageable with said orienting means of said housing for orienting said kick-over tool and said flow control device for movement of said flow control device into and out of said laterally offset landing nipple pocket, fluid pressure operated locomotive means connected with said running tool assembly for moving the same through said first tubing string; stop means on said running tool assembly coengageable with said stop shoulder means of said housing for retaining said running tool assembly in position in said housing; and means for releasing said stop means of said running tool assembly upon application of a predetermined force thereto for movement of said stop means past said stop shoulder means to permit withdrawal of said running tool assembly from said housing.

4. A locator sub and running tool assembly for use in a well having a pair of flow conductors therein having flow commu nication near the lower ends to provide a U-tube flow path in said well, one of said flow conductors having an elongate housing connected therein above the point of flow communication with the other of said flow conductors and provided with a flow passage therethrough in substantial axial alignment with the passage of said one flow conductor and a laterally ofiset landing nipple pocket for a flow control device, and orienting means disposed in predetermined circumferential and iongitudinal spaced relation with respect to said laterally offset landing nipple pocket, including: a locator sub having means for connecting it to said elongate housing and having stop shoulder means thereon disposed in predetermined spaced relation with respect to said orienting means in said housing; and a running tool assembly for installing and removing a flow control device in said laterally offset landing nipple including a kick-over tool; means on said running tool assembly engageable with said orienting means of said housing to orient said kick-over tool to direct a flow control device into or out of said laterally offset landing nipple; stop means on said running tool assembly engageable with said stop shoulder means of said locator sub for retaining said running tool assembly in position in said elongate housing; and means for releasing said stop means for movement past said stop shoulder means to permit withdrawal of said running tool assembly from said elongate housing.

5. The membly set forth in claim 4 wherein the running tool assembly includes fluid operated locomotive means for moving the same into and out of the well through said one tubing string by the force of fluids circulated through said U-tube flow path in said well 6. A running and removing tool assembly for use in connection with a housing adapted to be connected in a well flow conductor and having a flow passage therethrough in substantial axial alignment with the flow passage of said well flow conductor, a laterally offset landing nipple for a flow control device, orienting means disposed in predetermined radial and longitudinal spaced relation with respect to said laterally offset landing nipple, and stop shoulder means disposed in predetermined longitudinally spaced relation with respect to said orienting means, including: a kick-over tool for positioning a flow control device to be directed into or retrieved from said laterally offset landing nipple; means on said running tool assembly engageable with said orienting means of said housing to orient said kick-over tool to direct said flow control device into and out of said laterally offset landing nipple; stop means on said running tool assembly engageable with said stop shoulder means of said housing to retain said running tool assembly in said housing in position for operation; and means for releasing said stop means for movement past said stop shoulder means to permit said running tool assembly to be withdrawn from said housing.

7. A landing nipple for use in a well flow conductor for receiving and supporting a flow control device therein, including: an elongate housing having a longitudinal flow passage therethrough and means for connecting said housing to a flow conductor with said fiow passage in longitudinal axial alignment with the flow conductor; a laterally offset landing nipple pocket in said housing disposed laterally out of said flow passage of said housing and having a bore for receiving a flow control device therein; means providing a flow inlet into said laterally offset landing nipple pocket for admitting fluids thereinto; orienting means disposed in said longitudinal bore of said housing and having stop means thereon in predetermined circumferential and longitudinal spaced relation with respect to said laterally offset landing nipple pocket; and tubular locator means separate from said orienting means carried by said housing and having second stop shoulder means thereon disposed in predetermined longitudinal spaced relation with respect to said first stop means of said orienting means in said housing.

8. A running too] assembly for use with a flow conductor housing of the character set forth in claim 7 and including: a setting tool; a kick-over tool connected with said setting tool; orienting means connected with said kick-over tool and having an orienting and stop member thereon engageable with said orienting means and first stop means of said housing for orienting said kick-over tool with respect to the laterally offset landing nipple pocket; and holddown means connected to said kick-over tool and having holddown stop means thereon separate and spaced longitudinally from said orienting and first stop means and engageable with said second stop shoulder means of said tubular locator means for preventing premature displacement of said running tool assembly from said landing nipple.

9. A running tool assembly of the character set forth in claim 8 wherein said holddown means comprises an elongate mandrel having means at its opposite ends for connecting it in said running tool assembly; a sleeve slidable longitudinally on said mandrel and having a plurality of radial apertures formed therein spaced circumferentially around the medial portion thereof; a plurality of stop dogs disposed in said radially extending circumferentially s aced apertures of said sleeve and movab e radially therein; 0g expander means on said mandrel intermediate the ends thereof engageable with the stop dogs carried by said sleeve for holding the same in projecting stopping position; said stop dogs and expander means providing said holddown stop means engageable with said second stop shoulder means of said housing; relief means on longitudinally opposite sides of said expander means each providing a recess for receiving said dogs to permit said dogs to be moved to retracted position; supporting means on said mandrel supporting said sleeve in position with said dogs registered with said lock surface on said mandrel; resilient means biasing said sleeve to engagement with said supporting means on said mandrel; and releasable means holding said supporting means disposed on said mandrel for holding said sleeve in position registering said dogs with said locking surface. said releasable means being releasable by a predetermined force applied to said dogs and the sleeve longitudinally of said holddown means while said dogs are engaged with said stop shoulder means of said housing to move said supporting means to a position permitting said dogs to register with one of said relief means to permit said dogs to be removed to retracted position.

10. A running tool assembly of the character set forth in claim 8 including: means on said setting tool engaging said kick-over tool initially holding said kick-over tool in inoperative position and releasable by a longitudinal force applied to said setting tool while said orienting and stop member is engaged with said first stop means of said housing to free said kick-over tool for movement disposing a well tool in position to be disposed in said ofi'set landing nipple pocket.

ll. A landing nipple for use in a well flow conductor for receiving and supporting a flow control device therein. including: an elongate housing having means for connecting it at its opposite ends in a well flow conductor and having a longitudinal flow passage therethrough in substantial axial alignment with said flow conductor; a laterally ofiset landing nipple pocket for a flow control device in said housing spaced laterally from said longitudinal flow passage; orienting and first stop means in said housing disposed in predetermined circumferential and longitudinally spaced position with respect to said laterally offset landing nipple pocket; and tubular locator and holddown means separate from said orienting and first stop means and having second stop shoulder means disposed in predetermined longitudinally spaced relation from said orienting and first stop means on the longitudinal side thereof opposite said offset landing nipple pocket.

12. A housing of the character set forth in claim ll including: a lateral flow passage in said housing in flow communication with said laterally offset landing nipple pocket; and sealing and locking surfaces in said offset landing nipple pocket for receiving and holding a well tool in locked sealed position therein in communication with said lateral flow passage and with said longitudinal flow passage of said housing.

Claims

1. A well tool for use in connection with a housing adapted to be connected in a well flow conductor and having a flow passage therethrough in substantial axial alignment with the flow passage of said well flow conductor and a laterally offset landing nipple for a flow control device, and a running tool assembly for installing or removing a flow control device in said laterally offset landing nipple including a kick-over tool, and wherein coengageable orienting means is provided in said housing and on said running tool assembly cooperable to orient said kick-over tool to direct said well flow control device into or to retrieve it out of said laterally offset landing nipple by means of said running tool assembly, said well tool including: a locator sub having means for connecting it to said housing and having internal stop shoulder means disposed in predetermined spaced relation with respect to said orienting means of said housing; positioning tool means connected with said running tool assembly and having stop means thereon engageable with said stop shoulder means in said locator sub for retaining said running tool assembly in position in said housing; and means for releasing said stop means upon application of a predetermined force thereto for movement of said stop means past said stop shoulder to permit said running tool assembly to be moved out of said housing.

2. A well tool for use in a well having a flow conductor therein forming one of at least a pair of flow conducting passages in said well connecteD in flow communication at a subsurface point in said well and wherein at least one housing is connected in said flow conductor at a location intermediate the surface and the point of flow communication between the flow conductor and the other of said flow conducting passages, said housing having a flow passage in substantial axial alignment with the flow passage of said flow conductor, a laterally offset landing nipple for a flow control device, orienting means and stop shoulder means, said well tool including: a running tool assembly for installing or removing a flow control device in said laterally offset landing nipple in said housing; means on said running tool assembly engageable with said orienting means of said housing for directing said flow control device into or out of said laterally offset landing nipple; fluid pressure operated locomotive means connected with said running tool assembly for moving the same through the flow passage of said flow conductor; stop means on said running tool assembly coengageable with said stop shoulder means of said housing for retaining said running tool assembly in position in said housing; and means for releasing said stop means of said running tool assembly upon application of a predetermined force thereto for movement of said stop means past said stop shoulder means to permit withdrawal of said running tool assembly from said housing.

3. A well tool for use in a well having a first tubing string and a second tubing string disposed in side-by-side parallel relation in said well, and a crossflow passage connecting said first and second tubing strings below the surface of the well communicating the lower portions of said first and second tubing strings to provide a U-tube flow path in said well; said first tubing string having at least one housing connected therein between the surface and said crossflow passage, said housing having a longitudinal flow passage therethrough in substantial axial alignment with the flow passage of said first tubing string, a laterally offset landing nipple pocket for a flow control device, orienting means disposed in predetermined circumferential position with respect to said laterally offset landing nipple pocket, and stop shoulder means disposed in predetermined longitudinally spaced relation with respect to said orienting means; said well tool including: a running tool assembly for running and retrieving a flow control device in said housing including a kick-over tool for moving said flow control device laterally of said housing; means on said running tool assembly engageable with said orienting means of said housing for orienting said kick-over tool and said flow control device for movement of said flow control device into and out of said laterally offset landing nipple pocket; fluid pressure operated locomotive means connected with said running tool assembly for moving the same through said first tubing string; stop means on said running tool assembly coengageable with said stop shoulder means of said housing for retaining said running tool assembly in position in said housing; and means for releasing said stop means of said running tool assembly upon application of a predetermined force thereto for movement of said stop means past said stop shoulder means to permit withdrawal of said running tool assembly from said housing.

4. A locator sub and running tool assembly for use in a well having a pair of flow conductors therein having flow communication near the lower ends to provide a U-tube flow path in said well, one of said flow conductors having an elongate housing connected therein above the point of flow communication with the other of said flow conductors and provided with a flow passage therethrough in substantial axial alignment with the passage of said one flow conductor and a laterally offset landing nipple pocket for a flow control device, and orienting means disposed in predetermined circumferential and longitudinal spaced relation with respect to said laterally offset lAnding nipple pocket, including: a locator sub having means for connecting it to said elongate housing and having stop shoulder means thereon disposed in predetermined spaced relation with respect to said orienting means in said housing; and a running tool assembly for installing and removing a flow control device in said laterally offset landing nipple including a kick-over tool; means on said running tool assembly engageable with said orienting means of said housing to orient said kick-over tool to direct a flow control device into or out of said laterally offset landing nipple; stop means on said running tool assembly engageable with said stop shoulder means of said locator sub for retaining said running tool assembly in position in said elongate housing; and means for releasing said stop means for movement past said stop shoulder means to permit withdrawal of said running tool assembly from said elongate housing.

5. The assembly set forth in claim 4 wherein the running tool assembly includes fluid operated locomotive means for moving the same into and out of the well through said one tubing string by the force of fluids circulated through said U-tube flow path in said well.

6. A running and removing tool assembly for use in connection with a housing adapted to be connected in a well flow conductor and having a flow passage therethrough in substantial axial alignment with the flow passage of said well flow conductor, a laterally offset landing nipple for a flow control device, orienting means disposed in predetermined radial and longitudinal spaced relation with respect to said laterally offset landing nipple, and stop shoulder means disposed in predetermined longitudinally spaced relation with respect to said orienting means, including: a kick-over tool for positioning a flow control device to be directed into or retrieved from said laterally offset landing nipple; means on said running tool assembly engageable with said orienting means of said housing to orient said kick-over tool to direct said flow control device into and out of said laterally offset landing nipple; stop means on said running tool assembly engageable with said stop shoulder means of said housing to retain said running tool assembly in said housing in position for operation; and means for releasing said stop means for movement past said stop shoulder means to permit said running tool assembly to be withdrawn from said housing.

7. A landing nipple for use in a well flow conductor for receiving and supporting a flow control device therein, including: an elongate housing having a longitudinal flow passage therethrough and means for connecting said housing to a flow conductor with said flow passage in longitudinal axial alignment with the flow conductor; a laterally offset landing nipple pocket in said housing disposed laterally out of said flow passage of said housing and having a bore for receiving a flow control device therein; means providing a flow inlet into said laterally offset landing nipple pocket for admitting fluids thereinto; orienting means disposed in said longitudinal bore of said housing and having stop means thereon in predetermined circumferential and longitudinal spaced relation with respect to said laterally offset landing nipple pocket; and tubular locator means separate from said orienting means carried by said housing and having second stop shoulder means thereon disposed in predetermined longitudinal spaced relation with respect to said first stop means of said orienting means in said housing.

8. A running tool assembly for use with a flow conductor housing of the character set forth in claim 7 and including: a setting tool; a kick-over tool connected with said setting tool; orienting means connected with said kick-over tool and having an orienting and stop member thereon engageable with said orienting means and first stop means of said housing for orienting said kick-over tool with respect to the laterally offset landing nipple pocket; and holddown meaNs connected to said kick-over tool and having holddown stop means thereon separate and spaced longitudinally from said orienting and first stop means and engageable with said second stop shoulder means of said tubular locator means for preventing premature displacement of said running tool assembly from said landing nipple.

9. A running tool assembly of the character set forth in claim 8 wherein said holddown means comprises an elongate mandrel having means at its opposite ends for connecting it in said running tool assembly; a sleeve slidable longitudinally on said mandrel and having a plurality of radial apertures formed therein spaced circumferentially around the medial portion thereof; a plurality of stop dogs disposed in said radially extending circumferentially spaced apertures of said sleeve and movable radially therein; dog expander means on said mandrel intermediate the ends thereof engageable with the stop dogs carried by said sleeve for holding the same in projecting stopping position; said stop dogs and expander means providing said holddown stop means engageable with said second stop shoulder means of said housing; relief means on longitudinally opposite sides of said expander means each providing a recess for receiving said dogs to permit said dogs to be moved to retracted position; supporting means on said mandrel supporting said sleeve in position with said dogs registered with said lock surface on said mandrel; resilient means biasing said sleeve to engagement with said supporting means on said mandrel; and releasable means holding said supporting means disposed on said mandrel for holding said sleeve in position registering said dogs with said locking surface, said releasable means being releasable by a predetermined force applied to said dogs and the sleeve longitudinally of said holddown means while said dogs are engaged with said stop shoulder means of said housing to move said supporting means to a position permitting said dogs to register with one of said relief means to permit said dogs to be removed to retracted position.

10. A running tool assembly of the character set forth in claim 8 including: means on said setting tool engaging said kick-over tool initially holding said kick-over tool in inoperative position and releasable by a longitudinal force applied to said setting tool while said orienting and stop member is engaged with said first stop means of said housing to free said kick-over tool for movement disposing a well tool in position to be disposed in said offset landing nipple pocket.

11. A landing nipple for use in a well flow conductor for receiving and supporting a flow control device therein, including: an elongate housing having means for connecting it at its opposite ends in a well flow conductor and having a longitudinal flow passage therethrough in substantial axial alignment with said flow conductor; a laterally offset landing nipple pocket for a flow control device in said housing spaced laterally from said longitudinal flow passage; orienting and first stop means in said housing disposed in predetermined circumferential and longitudinally spaced position with respect to said laterally offset landing nipple pocket; and tubular locator and holddown means separate from said orienting and first stop means and having second stop shoulder means disposed in predetermined longitudinally spaced relation from said orienting and first stop means on the longitudinal side thereof opposite said offset landing nipple pocket.

12. A housing of the character set forth in claim 11 including: a lateral flow passage in said housing in flow communication with said laterally offset landing nipple pocket; and sealing and locking surfaces in said offset landing nipple pocket for receiving and holding a well tool in locked sealed position therein in communication with said lateral flow passage and with said longitudinal flow passage of said housing.