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Publication numberUS2800186 A
Publication typeGrant
Publication dateJul 23, 1957
Filing dateMar 7, 1956
Priority dateMar 7, 1956
Publication numberUS 2800186 A, US 2800186A, US-A-2800186, US2800186 A, US2800186A
InventorsTausch Gilbert H
Original AssigneeExxon Research Engineering Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Supporting assembly
US 2800186 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

July 23, 1957 GHMUS H 2,800,186

h SUPPORTING ASSEMBLY Filed March '7, 1956 2 Sheets-Sheet 1 F/G. v I FIG. .3. FIG. 4.

2 FIG. 2. 34

' INVENTOR. 2 Gilbert H. Tausch,

A TTQR/VEX.

July 23, 1957 Q G. H. TAUSCH I 2,800,186

SUPPORTING ASSEMBLY Filed llarph 7, 1956 2 Sheets-Sheet 2 FIG. 5. FIG. Z

' INVENTOR. Gilbert H. Tausch A T TOR/VE United SUPPORTING ASSEMBLY Application March 7, 1956, Serial No. 569,994 7 Claims. (Cl. 166121) This invention relates to a tubing tool supporting assembly adapted to be positionedin a string of tubing. More particularly, the present invention is directed to a tubing tool supporting assembly mountable in a string of tubing for use in suspending tubing tools in the said tubing. a

It is conventional practice to insert a tubing in a casing traversing a well bore, the tubing being useful for a wide variety of purposes, such as in permanent well completions; gravel packing operations, sand washing operations, dual production operations, etc. In conducting operations of the aforesaid nature it is frequently necessary to mount suitable tools in the tubing and, particularly,'adjacent the lower end of the tubing. Such tools are normally positionedby means of a wire line assembly and with drawn by means of such wire line assembly when the desired operations have been completed. While various devices for supporting such tools have been proposed in the past, the results have not been entirely satisfactory. Accordingly, an object of the present invention is the provision of a tubing tool supporting assembly.

Another object is the provision of a tubing tool supporting assembly which may be positively fixed in a string of tubing in a casing traversing a well bore.

A still further object is the provision of a tubing tool supporting assembly which may be lowered into the tubing and retrieved therefrom by means of a wire line.

These and other objects are attained, in general, through the provision of a tubing tool supporting assembly comprising a tubular body member having an exterior shoulder at the lower end thereof, a tubular mandrel having an interior recess and a port communicating with said recess, said mandrel being telescopically releasably mounted on said body portion with said exterior shoulder of said body portion normally positioned in said recess below said port, first deformable packing means expandable on the application of an upwardly directed pressure fixed to said mandrel above said port, a collar lock bar pivotally mounted on said mandrel below said port, second deformable packing means expandable upon the application of a downwardly directed pressure movably mounted on said mandrel below said collar lock bar, and means engageablewith said collar lock bar for forcing said collar lock bar into supporting engagement with said tubing on movement of said second means relative to said mandrel.

The present invention will be further illustrated in conjunction with the accompanying drawings wherein: I

Fig. 1 is an elevational view, partly in section, showing a tubing tool supporting assembly of the present inven tion in a string of tubing; such string of tubing being mounted in a casing traversing a Well bore;

Fig. 2 is a fragmentary elevational view, partly in sec-- tion, taken along the lines 22 of Fig. 1;

Fig. 3 is an elevational view, partly in section, of the tubing tool supporting assembly of Fig. 1 showing such assembly in locked position;

'--- Fig.4 is a fragmentary. elevational view, partlyin sec- Patent ice tion, of the tubing tool supporting assembly of Fig. 1 in position to be released;

/Fig. 5 is an elevational view of another embodiment of a tubing tool supporting assembly of the present invention;

Fig. 6 is a fragmentary elevational view, partly in section, taken along the lines 6--6 of Fig. 5; and Fig. 7 is a side elevational view, showing the supporting assembly of Fig. 5 in locked postion.

Turning now to Fig. 1 there is shown a string of easing comprising a plurality of casing sections 10 interconnected by suitable collars 12; such string of casing traversing a well bore (not shown). A string of tubing comprising a plurality of tubing sections 14 interconnected by means of suitable collars 16 is positioned in the string of casing and spaced therefrom whereby an annular space 18 between the casing sections 10 and the tubing sections 14 is provided. It will be noted that a collar recess 20 is formed intermediate adjacent tubing lengths. 14. A tubing tool supporting assembly of the present invention, designated generally by the numeral is shown in the string of tubing. ."With reference to Figs. 1 and 2, it will be seen that the assembly 30 comprises a tubular body member, designated generally by the numeral 32 having a fishing neck 34 at the upper end thereof and suitable means such as a port 36 permitting the flow of fluids into and through the interior of said 'body'. member 32. With reference. to Fig. 2 it will be noticed that the body member 32 is provided with an exterior shoulder 38 adjacent the lower end thereof for a purpose to be described. l

' There is also provided a suitable mandrel designated generally by the numeral 40. The mandrel 40 comprises an elongate lower tubular section 42 which preferably is of the same diameter as the body member 32 and is provided at the upper end thereof with an enlarged upper tubular section 44 telescopically mountable on the body member 32. It will be noted from Fig. 2 that the enlarged section 44 is provided with an interior recess 46 having at least a port 48 formed in the side thereof.

The exterior shoulder 38 of the body member 32 is positioned in the recess 46 of the mandrel 40 and, normally, is positioned below the port 48 in order to close the same against the transmission of well fluids therethrough.

Suitable first packing means 50, deformable upon the application of an upwardly directed pressure, are fixed to the mandrel 40. In accordance with a preferred embodiment of the present invention the first packing means comprises a downwardly facing cup member 52 carrying a plurality of serrated slip members 54 engageable with the wall of a tubing section 14. The mandrel 40 is releasably secured to the body member 32 by any suitable means such as through the provision of a shear pin 56.

At least one, and preferably a plurality of, collar lock bars 58 are pivotally mounted on the lower section 42 of the mandrel 40 by means of pivot pins 60. With reference to Fig. 2, it is seen that the mandrel 40 is preferably threaded at the lower end thereof in order to permit a suitable tubing tool to be attached thereto. In Figs. 1 and 2 of the drawings, for purposes of illustration, an extension hanger 62 is shown attached to the mandrel 40. It will be understood that any other suitable tubing tool may be attached to the mandrel 40 if desired.

Second deformable packing means 64, expandable upon the application of a downwardly directed pressure, are mounted onthe reduced section 42 of the mandrel 40 below the collar lock dogs .58. In Figs. 1 and 2 the second means 64 are shown to be releasably fixed t the lower section 42 by means of suitable shear pins 65. However, it is not necessary that this be done and, if desired, the second packing means 64 may be permitted to rest on the top .of the tubing tool, such as the extension hanger 62, mounted on the lower'section .42 of the mandrel 40.

It will be noted that the second packing means 64 is similar to the first packing means 50, comprising an upwardly facing cup member 66 formed of a suitable deformable material and having integrally associated therewith a plurality of slip members 67 engageablewith the wall of a tubing section 14. The second packing means 64 is also provided with an upwardly extending collar portion 68 having a sloping surface 70defining. a cam.

Operation In operation, a suitable tubing. toolsuch as an extension hanger 62 is fixed to the lower end of the'gmandrel 40 and the tubing tool supporting assembly 30 and the associated tool such as the tool 62 is then lowered into a string of tubing and supported therein by a suitable wire line assembly (not shown). After the desired depth has been reached, downward flow through the tubing is established in order to, provide a pressure differential for expanding the second packingmeans 64. As. aresult, the serrated slip members 67 are brought into positive engagement with the wall of the tubing section 14.

When the secondxpacking means 64 is attached to the lower section 42 of the mandrel 40 by means of a shear pin 65,.upward tension is applied to the. tubing assembly by means of the Wire line in order to shear the pin 65. If the second packing means 64 is slidably mounted on the lower section 42 of the mandrel 40, this step may be omitted.

After the second packing means 64 has been secured in position due to expansion of the same, and after the. second packing means 64 is slidable relative to the mandrel 40, the remainder of the tubing tool supporting assembly 30 is lowered relative to the said second packing means 64 by slacking off on the wire line, for example. As a consequence, the collar lock bars 58 are directed outwardly by the cam surface 70 into engagement with the surface of a desired section of the tubing 14.

With the collar lock bars against the tubing wall, downwardly directed pressure. is discontinued in order to release the second packing means 64 and the assembly is lowered on the wire line until the collar lock bars 58 have expanded into a collar recess 20 as shown'in Fig. 3. Thereafter, the weight of the tubing tool supportingassembly 30 hearing against the collar lock bars 58 will retain the same in position whereby the assembly 30 may be supported solely by the lock bars 58'.

Thereafter, the wire line assembly may be disconnected from thetubing tool supporting assembly 30 and with-- drawn from the tubing. Operations necessary for the treatment of the well may be performed while the tubing tool, such as the extension hanger 62, is supported by the tubing tool supporting assembly 30; the assembly 30, as indicated, being supported in a suitable collar recess 20 by means of the collar lock bars 58. During well treating operations, downwardly directed circulation or upwardly directed reverse circulation of fluids in the well may be necessary. When a downwardly directed pressure. is applied, the second packing means 64 will be expanded into seating engagement with the wall of a section 14 of the tubing to provide auxiliary support means. When there is reverse upwardly directed circu lation, the second packing means 64 will be released but the first packing means 50 will be expanded in order to. force the slip segments 54 into engagement with the wall. of a section 14 of the tubing to again provide a secondary support.-

When treating operations have. been. completed. and. it

is desired to remove the tubing tool 62 and the supporting assembly 30 from the well, a suitable wire line assembly (not shown) is again lowered through the tubing and latched to the fishing neck 34 of the body member 32. Reverse upwardly directed circulation is established in the tubing 14, thereby causing first packing means 50 to be expanded into engagement with the wall of a section 14 of the tubing, as shown more clearly in Fig. 4. Upwardly directed tension is then applied to the body member 32 to shear the pin 56 whereby the body member 32 may be moved relative to the mandrel 40. Upward movement of the body member 32 will cause the shoulder 38 on the bottom thereof to seat against the upper surface of the recess 46whereby the port 48 will be opened. Thereafter, reverse circulation is discontinued and the tubing tool supporting assembly 30 and a tubing 'tool connected therewith may be withdrawn from the well without difiiculty in that the by-passing of the Well fluids by the port 48 will prevent the creation of a pressure differential sufficient to set the second packing means 64.

Modified form of the invention With reference to Figs. 5 and 6 it will be seen that the modified tubing'tool supporting assembly 30' comprises a body member 32', a mandrel 40', first packing means 50 and second packing means 64', all being, for example, of a construction and arrangement as that shown in Figs. ,1 and 2. In this modification, however, collar 80 is provided on the second packing means 64' which is of a modified construction; the collar 80 be ing provided with an upwardly extending latching section 82 for a purpose to be described. Aplurality of collar lock bars 84 are pivotally mounted to the mandrel 40' each by means of a pivot pin 86. In addition, a pin 88 is provided which is secured to the body member 32' for extension through a port 48' in the mandrel 40'. Latching means of any suitable construction are also provided comprising, for example, a latch link 91 which is pivotally mounted at one end thereof to the latch bar 84 by means of pivot pin 90. The latching link 91' is provided with a keyway 92 adapted to receive the pin 88. In addition, suitable upwardly directed biasing means 94, such as spring 94 is provided, the spring 94 being fixed at one end to the mandrel 40 and at the other end to the lower end of the lock bar 84.

Prior to inserting the modified assembly in a string of tubing the latch bar 84 is cocked so that the spring 94 is extended but prevented from setting the latch bar 84 because of the engagement of the latch bar 84 with the projection 82 on the collar of the second packing means 64'.

In operation, the modified tubing tool' supporting assembly 30' is lowered through a string of tubing in the manner described with respect to the assembly 30 and the second packing means 64' is set in the described manner. Upwardly directed tension is then applied to the assembly 30 by means of a suitable wire line (not shown). As a result, the pin 65' will'first be sheared in order to permit movement of the mandrel 40' relative to the second sealing means 64' and upon movement of the mandrel 40' relative to the second sealing means 64', the latch bar 84 will be moved from engagement with the projection 82 on the collar 80 of the second sealing means 64'- When this happens, the spring member 94 will positively force the latch bar 84 into engagement with the wall of the tubing. Thereafter, the second packing means 64 may be released in the indicated manner and the assembly 30 lowered until the lock bar 84 is posasodis' 91 holds the latch bars 84 in place as shown in Fig. 1 to prevent any downward movement of the assembly 30'. When the modified assembly 30 has been positively seated in a collar recess in the described manner, the wire line assembly may be withdrawn from the tubing and well treating operations of any desired nature may be performed. I v

In order to remove the assembly 30' from the tubing, a suitable wire line (not shown) is connected therewith and upward tension is applied in order to shear the pin 56'. As a consequence, the body member 32' will move upwardly relative to the mandrel 40' and the pin 88, sliding in the keyway 92 will cause the latch link 91 to positively retract the lock bars 84 against the tension of the spring 94. In addition, the port 48' will be opened so that the assembly 30' can be withdrawn from the tubing without difliculty What is claimed is: is

1. A tubing tool supporting assembly insertable in a length of tubing, said assembly comprising a tubular body member having an exterior shoulder at the lower end thereof, a tubular mandrel telescopically mounted on said body member, said tubular member having an interior recess and a port communicating with said recess intermediate the ends of said recess, means releasably securing said mandrel to said body member with the said exterior shoulder of said body member positioned in the said recess of said mandrel below said port to thereby close said port, first deformable packing means expandable on the application of an upwardly directed pressure fixed to said mandrel above said port, latching means mounted on said mandrel below said port, second deformable packing means expandable upon the application of a downwardly directed pressure slidably mounted on said mandrel below said latching means, and means engageable with said latching means for forcing said latching means into engagement with said tubing on movement of said mandrel relative to said second deformable packing means.

2. A tubing tool supporting assembly insertable in a length of tubing, said assembly comprising a tubular body member having an exterior shoulder at the lower end thereof, a tubular mandrel telescopically mounted on said body member, said tubular member having an interior recess and a port communicating with said recess intermediate the ends of said recess, means releasably securing said mandrel to said body member with the said exterior shoulder of said body member positioned in the said recess of said mandrel below said port to thereby close said port, first deformable packing means expandable on the application of an upwardly directed pressure fixed to said mandrel above said port, a collar lock bar pivotally mounted on said mandrel below said port, second deformable packing means expandable upon the application of a downwardly directed pressure slidably mounted on said mandrel below said collar lock bar for movement relative thereto and means engageable with said collar lock bar for forcing said collar lock bar into engagement with said tubing on movement of said mandrel relative to said second deformable packing means.

3. A tubing tool supporting assembly insertable in a length of tubing, said assembly comprising a tubular body member having an exterior shoulder at the lower end thereof, a tubular mandrel comprising a lower section having substantially the diameter of said body member and an upper enlarged tubular section telescopically mounted on said body member, said upper portion of said mandrel having an interior recess and a port communicating with said recess intermediate the ends of said recess, frangible means releasably securing said mandrel to said body member with the said exterior shoulder of said body member positioned in said recess of said mandrel below said port to thereby close said port, first deformable packing means expandable on the application o fan upwardly, directed pressure 'fixed to said mandrel above said port, a collar lock bar pivotally mounted on said mandrel below said port, second deformable packing means expandable upon the application of a downwardly directed pressure movably mounted on said mandrel below said collar lock bar for movement relative thereto and means engageable with said collar lock bar for forcing said collar lock bar into engagement with said tubing on movement of said mandrel relative to said second deformable packing means.

4. A tubing tool supporting assembly insertable in a length of tubing, said assembly comprising a tubular body member having an exterior shoulder at the lower end thereof,'a tubular mandrel comprising a lower section having substantially the diameter of said body;member and .an upper enlarged tubular section telescopically mounted on said body member, said upper portion of said mandrel having an'interior recess and a port communieating with said recess intermediate the ends of said recess, frangible means releasably securing saidmandrel to said bodymemberwith'. the, said exterior shoulder of said body memberpositioned in said recess of said mandrel below said port to thereby close said port, first deformable packing means expandable on the application of an upwardly directed pressure fixed to said mandrel above said port, a collar lock bar pivotally mounted on said lower portion of said mandrel, second deformable packing means expandable upon the application of a downwardly directed pressure slidingly positioned on said mandrel below said collar lock bar, said second deformable packing means having fixed thereto an upwardly extending collar having an upper sloped surface engageable with the lower end of said collar lock bar, whereby movement of said mandrel relative to said second deformable packing means will force said collar lock bar into engagement with the wall of said tubing.

5. A tubing tool supporting assembly insertable in a length of tubing, said assembly comprising a tubular body member having an exterior shoulder at the lower end thereof, a tubular mandrel comprising a lower section having substantially the diameter of said body memberand an upper enlarged tubular section telescopically mounted on said body member, said upper portion of said mandrel having an interior recess and a port communieating with said recess intermediate the ends of said recess, frangible means releasably securing said mandrel to said body member with the said exterior shoulder of said body member positioned in said recess of said mandrel below said port to thereby close said port, first deformable packing means expandable on the application of an upwardly directed pressure fixed to said mandrel above said port, a collar lock bar pivotally mounted on said lower portion of said mandrel, second deformable packing means expandable upon the application of a down- Wardly directed pressure slidingly positioned on said mandrel below said collar lock bar, said second deformable packing means having fixed thereto an upwardly extending collar having a latching shoulder at the upper end thereof engageable with the lower end of said collar lock bar to normally prevent latching movement of the same, means carried by said mandrel and connected with said collar lock bar for biasing said collar lock bar to a latching position, whereby on upward movement of said mandrel relative to said second deformable packing means said collar lock bar will be released from said latching shoulder and positively urged by said biasing means into engagement with the'wall of said tubing, and means carried by said body member and attached to said collar lock bar for positively retracting said collar lock bar on upward movement of said body member relative to said mandrel.

6. A tubing tool supporting assembly insertable in a length of tubing, said assembly being comprised of a body portion comprising first and second tubular tele- H7 scopically interconnected members, a first of said mem bers having aportin the side thereof closable by the second "of said members, means releasably holding said second member to said first member in a port-closing positiomfirst deformable packing means expandable on the application of a first pressure directed in a first direction relative to. the length of said tubing fixedto said body portion, second, deformable packing means expandable on the application'of pressure directed oppositely'to said first pressure movably mounted .on said body portion and latchingmeans carried by said body portion and engageablewith the Wall of said'length of tubing forsecuring said assembly to said wall of said tubing in'response to movement of said second deformable packing means relative to said body member.

7. A tubing tool supporting assembly insertable in a length'of tubing, said assembly comprising a body memher, a mandrel member telescopically mounted on said body member with at least an exterior portion of one of said members about an interior portion of the other of said members, a first of'said members having a port in the side thereof, means releasably securing said mandrel member to said body member in a port-closing position, first deformable packing means expandable on the appli cation of an upwardly directed pressure fixed to the said exterior portion of saidvone ofsaid members, latching means mounted on said exterior portion of said onejof said members below said port, second deformable packs ing meansexpandable on the application of a downward-j 1y directed pressure movably mounted on the said ex terior portion of said one of said members, and means carried-by said second deformable packing means and engageable with'said latching means for forcing said latching means into engagement with said tubing on movement of said second deformable packing means relative to said exterior portion of said one member.

References Cited in the file of this patent UNITED STATESPATENTS Newlin Sept. 11, 1956

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2231767 *Dec 18, 1939Feb 11, 1941Mason Jr Arthur JOpen-hole support
US2691418 *Jun 23, 1951Oct 12, 1954Connolly John ACombination packing cup and slips
US2762441 *Mar 9, 1953Sep 11, 1956Newlin George EOil well washing device
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2991835 *Jun 27, 1957Jul 11, 1961Otis Eng CoHanger or stop for well tools and means for inserting the same
US2999542 *Jun 24, 1957Sep 12, 1961Baker Oil Tools IncLocator for well casing collar spaces and similar recesses
US3007526 *Jun 4, 1958Nov 7, 1961Jersey Prod Res CoApparatus for performing operations in wells
US3020958 *Jun 23, 1958Feb 13, 1962Jersey Prod Res CoWell tool
US3085627 *Aug 15, 1958Apr 16, 1963Lynes IncInflatable packer or element
US4743033 *Dec 16, 1985May 10, 1988Baker Oil Tools, Inc.Dynamic seal assembly for piston and cylinder operating in subterranean wells
US7647980 *May 29, 2007Jan 19, 2010Schlumberger Technology CorporationDrillstring packer assembly
EP0618343A2 *Mar 29, 1994Oct 5, 1994Ctc International CorporationHorizontal inflatable tool
Classifications
U.S. Classification166/121, 166/202, 166/119, 166/206
International ClassificationE21B23/00, E21B23/02
Cooperative ClassificationE21B23/02
European ClassificationE21B23/02