US1447965A - Tubing stabilizer - Google Patents

Description

Maf. 13, 1923.

'E. V. CROWELL.

TUBiNG STABILIZER. ummm FILED nsc.18,1919.

1f: Iron/'uffa Patented lli/lar. i3, i923.

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EBD. V. GRDWIELL, 0F TULSA, OKLAHOMA.

TUBING srezemznn.

Application inea necember 1e, 191e, serial no. ceases. Renewed rau-Chis, 1922.

To @ZZ whom it may concern.' Be it knownthat l, Een. V. CnownLL, a citizen of theUnited States, and a resident of Tulsa, 'i n the'county of Tulsa and State of klahoinmha've invented `certain new and useful improvements in Tubing Stabilizers, of which the following isa specification.

My invention relatesto a supporting or stabilizing apparatus 'for pumping equipmentV in oil wells, the purpose of m-y invention being the provision of .a stabilizer' for the pipe which conducts the oil from the bottom of the well to the surface, commonly known as tubing whereby, the great longitudinal stress which is necessarily imposed on the tubingfin its ordinary method of ap. plication, and the .lateral vibration occa-- sioned by thel movement of the pumping valves within the tubing, are eliminated..

My invention contemplates the following advantages:

Relieves the tubing ofa part or allof the tensile strain.. I

'Frovides a potential protection against fthe tubing dropping should the tensile strain be exceeded. "a v Prevents the lateral vibration of the tubing which not only adds to its tensile strain but agitates the fluid which causes sand to be carried in suspensin and resulting in the rapid wearing out of the pumping cylinder and the valves.

Prevents the pumping cylinder from longitudinalmmovement occasioned by a. similar movement of the valves in the pumping cylinder, thus increasing the capacity of the pump.

ll will describe one form of stabilizer embodying my invention, and will then point out the novel features thereof in..

claims.

In the accompanying drawingsz Figure 1 is a View, showing in side ele vation one form of stabilizer embodying my invention in applied position within a wel casing;

Figure 2 is a vertical sectional view of the stabilizer shown in; Figure 1;

Figure 3 is a transverse sectional view, taken on the line 3 3 of Figure 2; and

i Figure e. is a perspective view of one of the bolts shown in Figure 2. 1

Similar reference characters refer to similar parts in each of the several views.

Referring specifically to the drawings, and particularly to Figure l, W designates -tween the threaded a well casing which inthe present instance comprises .an'upper sect1on 15 and a lower lsection 1 6 which are connected together at their confronting ends by a coupling mem-l Serial No. 544,039.

ber K so as to occupy a perpendicular position within the shafting of the well.

As illustrated to advantage in Figure 2,

the coupling member K is in the form of a 4 sleeve and is interiorly provided with an upper screw threaded portion 17 and a lower screw threaded portion 18, suchportions being adapted to'threadedly engage the outer surfaces of the sections l5 andl', respecas` clearly shown in Figure 1. Be-

portions 17 and 18 the coupling membe ,la is interiorly formed with an annular, channel 19, the upper edge tively,

wall of whichy l'snclined inwardly, as at 19, while its lowerfedge-wall is projected inwardly at right 'ingles to provide an annular 'shoulder 19", with its. lower edge inclined inwardly as at 319?.

The couplinginember K has the same outside diameter as that of a casing coupling, and the same inside diameter 'as that of the casing on which thedevice is installed. Thus a wall thickness is provided suilicient to allow for'the annular channel 19- without infringing on the diameter of the casing.

member K is a cage C Awhich is bored longitudinally, as at 20, to 'slidably receive 4the well tubing` T. The well tubing T is formed orf'pipe sections connected by a conventional form of pipe coupling F.. IThe lower ondv of the well tubing supports a. conventional form of working barrel B in which con' tained the pump for forcing the oil upwardly through the well tubing, as will be understood. As shown in Figure 2, the opposite ends of the cage C are tapered. for the purpose of facilitating the insertion of the cage into the coupling member. Between the taper-ed lportions the cage is formed l on its outer surface with an annular groovel 2l designed for the reception of a pair of locking members L and L which are adapted to lock the cage' against downward movement within the coupling` member, as will be more fully described hereinafter.

AAs shown in Figure 3, each locking member L and L is of substantially semi-circular formation and provided with flattened portions Q2 adjacent the opposite ends thereof 'to allow the free passage of gas upwardly through the well casing W. The sides of Adapted to be inserted within the coupling cage ican beireadily withdrawn upwardly l the case C nia 1 alsobe flattened for a similar'- purpose.v is shown in Figure 2, each locking member L or L is recessed intermediate its ends, and onits inner faces to provide a pair of snperposed sockets 23 which are move the members L and L outwardly from the cage to ei'iect the desired locking iunction. 'llhe movement of the members L and L under the action oi the spring 2li is restricted by a pair of bolts 25 whichA slidably fit within pockets 26 formed in the outer faces et the members. The inner walls of the pockets 26 are 'formed with suitable openings through which the bolts 25 extend and tney have their inner threaded ends secured at diametrically 'oppositevpoints within the wall of the cage C. As clearly shown in Figure i, each bolt 25 is formed with a shoulder 25l which is a.da} t ed to abut the cage C to thereby limit the inward movement ot the bolt so that itis automatically positioned within the pocket 26 to effect a proper controlling ot' the locking member L or L.

As previously stated, the bore 2O of the cage C slidably receives the tubing T, and in its application to the well casing "W, 1t isapplied to the tubing at a point above the working; barrel B so that when vit Vis engaged with the couplingr member la, the working barrel E .will be properly posi tioned, as to elevation in the same, and the coupling l) will rest on the cage C to prevent downward movement of the tubing. As the tubing T ismoved downwardly to its inal position within the well casing, the locking members L and L slide over the inner surface of the upper section 15. As the cage is moved into the coupling member l, the lower edge of the'locking members L and L abut .the flange 19b and thus prevent further.

, downward movement oi' the cage so that the Same 1s locked within the coupling member,v

as shown in Figures l and 2. From this arrangemen't,-it will be understood that' the tubing T is supported against downward movement as well as lateral movement so that the longitudinal and lateral stresses land vibrations A'to which the tubing is usually subjected, are absorbed by the cage withthe result ot' reducing the'liability of the tubing` being broken.` Should the tubing be broken at a point above the cage7 or should any of the appliances at the top of the well become brolren so as 'to release the tubing, it is manifest that because the coupling l? engage the cage C, the dropping of the tube into the well is prevented.v lt will be umlerstoody that the trom the lcouplingl the locking members L and L are moved inwardly against the tension of the springs 24 when engaging the inclined surfaces 19iL oi`- the coupling inember, thus permitting the -free upward move-` ment of the cage through the coupling niember and outwardly or the upper section 15.

In operation, the amount of tubing weight allowed to rest on the cage C may be' gauged by the amount-of tension to which the tub ing isV subjected at the top et thewell. When installing the tubing with, the stabilizer7 the tubing first rests with itull weight, en the cage C, when the tubing will, of course.j lean over and bend in long curves in the easing. ln order to straighten the tubing in the well so that it will hans; true lto center.) should be one inch "of tension taken ein` the tubingl for each hundred feet ot t above .the cage C7 thus just enough n of tubing is allowed to rest on t e s izcr to prevent the longitudinal movemen' of the tubing.

Although l'. have herein shown and described only one form of stabilizer embody ing my invention, it is to be understood that various changes and modifications ma"7 be 4 made herein without departing from the spirit ofA the invention and the spirit and sco e oi the appended claims.`

' raving thus described my invention, l claim: l

1. A. stabilizer' tor wells comprisinga tube receiving cage, a plurality of locking members surrounding the cage and adapted for engaging a portion et the well casing, springs urging the locking members to3 op# erative positions, and holding bolts connected to said cage and slidably supporting said locking members.

2. A stabilizer for wells comprising' 'a tube receiving` cage, .a plurality or locking' members surrounding the cage and adapted for engaging a portion o'i the well casing'7 springs urging the locking members to op? erative positions, and holdingbolts connected to said cage and slidably supporting said locking members, said holding bolts being formed with heads arranged in the path` oiE travel of and limiting the radial movement of the locking members.

A. stabilizer for wells comprising' a tube receiving cage, a plurality locking members surroundingthe cage and adapted for engaging a portion ot the well casing', springs urging thev locking; members to operative positions, and holdingr bolts connected to said cage andslidably supporting said' locking` members, said holding bolts being formed with heads arranged in the path oi' travel oi' and limiting the radial movement ille of the locking members, tlie'ends ot the cage being tapered.

A stabilizer forl well tubing compri ner sides formed with sockets, springsfarmeans for restricting the action of'said bias-.25

ranged in said sockets and contacting with the inner walls of said grooves for urging the sections outwardly, and holding members slidably connecting said section to said cage and limiting the outward movement of the sections.

A stabilizer for well tubing comprising a tube receiving cage having an annular groove, a plurality of arcuate sections received 4within said groove, having their inner sides Jformed with sockets, springs arranged in said sockets and contacting with the inner walls of said grooves i'oll` urging the sections outwardly, and holding members slidably connecting said sections to said cage and limiting the outward movement of the sections, the end portions of said cage being tapered. .i x 1 6. A tubingstabilizer comprising a cage bored l'n iitudinally and formed with groove on its outer face, locking members slidable -in said groove, means Jfor biasing said members radially of said cage, and

ing means.

7. A tubing stabilizer comprising a cage bored longitudinally and` provided eXteriorly with an annular groove, semi-circular lock,-

ing members disposed within said groove,

springs interposed between said cage and members for biasing the latter outwardly from the cage, and bolts mounted `in said cage and slidably associated with said mem` bers for limiting the outward movement of said members, v Y

8. In combination, a well casing, a projection formed interiorly of the casing, and a stabilizer insertable within'the casing and comprising a cage, said cage being' bored longitudinally and provided eXteriorly thereof with a groove, locking .members within said groove and movable radially of said cage and adapted to engage'said projection, means for biasing said members out- Wdrdly-trom the cage, and means for limiting the action of said biasing means..

' ERD. V. CROVVELL.

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