US2067885A - Setting tools for packers and the like - Google Patents

Description

Jan. 19, 1937. c. c. BROWN SETTING. TOOLVFOR PACKERS AND THE LIKE 2 SheetS Sheet 1 Filed May 3, 1934 CCBr nW Jan. 19, 1937. c. c. BROWN 2,067,885

SETTING TOOL FOR PACKERS AND THE LIKE Filed May 3, 1954 v 2 Sheets-Sheet 2 Patented Jan. 19, v191 57 SETTING TOOLS FOR. PACKERS 'AND.THE L KE Cicero C. Brown, Houston, Tex, Application May 3, 1934," Serial N; 723,73,

Claims, 01. 166-10 i My invention relates to setting 'tools employed in setting packers and the like in deep w'ells.I-1

It is an object of my invention to provide a setting tool which will maintain a rigid hold upon,

the packenpreventing its release and setting until the properpoint is reached where it is desired that the packer be expanded'fi 7 It is a difliculty with most setting tools now employed in'handling packers that the tool is liable to release the packer so that it maybe "expanded and set in the hole before the proper position in the well has been reached. Q If an obstruction is encountered in the hole whilethe packer is being lowered andtit becomes neces- 1 sary to draw thepacker upwardly away from, the p obstruction temporarily and 'then again to'lower; it in the hole, it is frequently found that-during this operation the setting toollhasjbecomejdisconnected in such way that. thejpacker'is'ex-j panded at the wrong point and the problem of getting the packer out of the hole againhas to be solved.

I desire to overcome this difliculty by forming a rigid connection between the setting tooland the packer barrel which can only released, when the partshave been unscrewed by, positive rotation of the setting tool.

It is another object of the invention to provide means to prevent release of the packer after it has been once set in position in the hole.

My invention lies particularly in the construcftion and arrangement of the-parts. making up the setting tool which will be morespecifically hereinafter described:

Referring to the drawings herewith, Fig.-1 is a central longitudinal section through a well casing showing the" packer and setting tool partly in elevation and partly in-central vertical section. Fig 2 is a transverse section on the plane 2-2 ofFig.1.

Fig. 3 is a similar transverse section on the plane 3-3 of Fig. 1. a

Fig. 4 is a section similar to. that shown in Fig. l but with the parts in different position.

'Fig. 5 is an assembly view partly in section and 1 partly in elevation illustrating the position of the parts while the packer is being expanded. v

I have shown my invention as used within a well employing an outer casing i, the lower end having the usual casing shoe 2 thereon.

In setting a strainer and packer, as will be understood from Fig- 5, the strainer 3 at the lower end of the liner 4 is shown as projecting below the liner into the producing stratum. A packer 5 is ordinarily set to seal oif the passage and they packer in position.

The packer here shown is one of ordinary .con-

struction' in which there is a packer barrel 6 whichis in fact a section'of the liner. Upon the outer'surf'ace of this barrel is a sleeve 1 slidable thereon. j l The lower end ofethis' sleeve is reduced .indiameterand corrugated ,tor attachment thereto or the{upper end 8' of,;th'e packing member '9.' This isan'ordinary'canvas packer, the lower endj'ofgwhich-is similarly attached by wrappin'gs of" wire. at" mgw a coupling member 'll' secured tothe linefQQ-Jit theupper end ofthe sleeve I isffa setting sleeve 12, which extends upwardlyalsuita b instance in the casing and I; has its upper end bev'el'edat llfor. contact with the setting tool.

The upper end off the i packer barrel .6 is

threadedfor connection at H. with a nipple l5. 'Said'nippld'has-its upper end increased in outer diametei jatlfi the-lowerside thereof is beveled at. :I If to. form an; expanding member con- ,t'actingwith the upperpflari l end ll of a slip w or dog-lltoothed on its outer surface to engage thesetting sleeve I2: and'prevent relative downward movement of the nipple l5 relative to thesetting sleeve. I Below .the slip I9 is a oollar 20, which limits thedownward movement of the slip upon the nipple, allowing a slight play in both upward and downward directions. The upper end of the nipple i5 is beveled inwardly-and downwardly at 4 0 and isslotteddownwardly at}! at opposite points'to receive downwardly extending arms upon an upper latching collar 23. I .The latching collar 23 is slotted for aportion of its length at24, said slots extending upwardly .from the lower end to provide, between said slots, the arms 25, whichmay bemoved resiliently inwardly under pressure, Adjacent the lower ends of these arms the said arms are increased in thickness outwardly and beveled at 26 on theupper and lower sides thereof; thus providing a projection 25a adapted to engage within an annular recess 21in the inner wall of the packer barrel. Above the latching ribs thus provided the latching-sleeve is reduced in diameter and its upper end has an inwardly extending flange threaded .upwardly oizfluid from the well between the v liner and easing. "My. invention isgconnected with the setting tool employed in setting the strainer at 28 with a coarse thread to engage with the threaded area 29 uponthe setting mandrel 30.

The setting mandrel 30 is a tubular member, the lower end of which is provided with a ring 3|, the

upper end of which is beveled on its outer sideat 32 for contact with the inner beveled surface 33 upon the latching sleeve 23. It is held in position in a shallow recess in the mandrel by a clamping collar 34 on the lower end of the mandrel. The upper end of the mandrel is connected on its outer face to a setting head 35. Said head is of material thickness so as to fit loosely within the setting sleeve l2. It has a shoulder 36 overhanging the upper end of the setting sleeve by means of which a blow may be struck upon the setting sleeve.

While the device is being lowered into the well the parts are assembled as shown in Fig. l. The upper end of the latching sleeve 23 is screwed upon the threaded area 28 of the mandrel 30 and when in this position the upper-end of the ring 3| engages against the inner surface of the latching collar and forces the rib 25 thereon into the inner recess 21 in the setting sleeve. This holds the mandrel from longitudinal movement relative to the setting sleeve so that the parts cannot be accidently separated while the device is being manipulated in the casing. The slip ring is is split at one side, as shown at 31; to interilt with a lug or ridge 38 on the outer surface of the nipple 15, thus preventing relative rotation of the parts. The parts thus locked together may be moved as a unit in either upward or downward direction without any danger of becoming unlatched. When the proper position in the well has been reached where the packer is to be expanded, the setting t001 is rotated within the latching sleeve'to screw the setting mandrel downwardly and release'thesame therefrom; When this threaded connection has been released the mandrel may drop downwardly from beneath the latching arms 25 so that the connection between the mandrel and the setting. sleeve has been released. The lowering of the mandrel relative to the packer will bring the shoulder 36 on the set- -ting head 35 against the upper end of the setting sleeve l2 and force the same downwardly along the packer barrel and thus compressing the packing memberlongitudinally and expanding the same out against the casing as shown in Fig. 4.

When the setting mandrel is being lowered the packer barrel with the latching sleeve and latching arms above it remains stationary and the parts will finally assume the position shown in Fig. 4 with the slip l9 engaging the inner surface of the setting sleeve and thus preventing the upward movement of the setting'barrel relative to the packer barrel. It will then be possible to withdraw the setting tool upwardly from the well, the

' threads 29 engaging the latching collar and with-- drawing it upwardly from the well.

are capable of being latched securely in position I .so that they may be manipulated in the well without danger of becoming released until the proper point in the well has been reached. This is of material value and leads tosafety in operation and prevents the accidental setting of the packer at the wrong position in the well.

What I claim as new is:

1. A setting tool for well packers having a packer barrel, a packing'member thereon and a packer setting sleeve secured to the upper end of' said packing'member and slidable on said packer barrel, including a mandrel, a setting collar thereon adapted to engage upon said setting sleeve, a latching collar having a threaded connectionwith said mandrel, a projection on said latching collar adapted for engagement within a groove in said setting sleeve, means on said mandrel engaging beneath said latching collar to retain said projection fixed in said groove, and a nipple on said packer barrel interengaging with said latching collar, said latching collar being releasable both from said mandrel and said setting sleeve upon downward screwing of said mandrel relative to said latching collar.

2. A setting tool for well packers having a packer barrel, a packing member thereon and a packer setting sleeve secured to the upper end of said packing member and slidable on said packer barrel, including a mandrel, a setting collar thereon adapted to engage upon said setting sleeve, a latching collar having a threaded connection with said mandrel, a projection on said latching collar adapted for engagement within a groove in said setting sleeve, means on said mandrel engaging beneath said latching collar to retain said projection fixed in said groove, and a nipple on said packer barrel 'interengaging with said latching collar, said latching collar being releasable both from said mandrel and said setting sleeve upon downward screwing of said mandrel relative to said latching collar, and means on said nipple engaging the interior of said setting sleeve to prevent relative upward movementof said sleeve.

.3. vA setting tool for well packers having a packer barrel,a packing member thereon and a packer setting sleeve secured. to the upper end of said packing, member and slidable on said packer barrel, including a mandrel, a setting collar thereon adapted to engage upon said setting sleeve, a latching collar having a threaded connection with said mandrel, a projection on said latching collar adapted for engagement within a groove in said settingsleeve, means on said mandrel engaging beneath said latching collar to retainsaid projection fixed in said groove, and a nipple on said packer barrel interengaging with said latching collar, said latching collar being releasable both from said mandrel and said setting sleeve upon downward screwing of said mandrel relative to said latching collar, a slip ring on said nipple, means on said nipple for expanding said ring on relative upward movement of said ring, and downwardy inclined teeth on said ring to engage said setting sleeve.

4. A barrel, a packing member thereon, a packer setting sleeve telescoping over said barrel and fixed to the upper end of said packing member, a setting mandrel, a setting'head thereon to engage the end of said sleeve, a latching] collar releasably connected with said mandrel, means on said. collar engaging within a recess in said setv ting sleeve, means on said mandrel to hold said engaging means in engagement within said recess -whereby said mandrel is fixed against longitudinal movement relative to said sleeve, said latching collar and said mandrel being disconnectable from each other and from said sleeve by a downward screwing of said mandrel whereby said head may engage said setting sleeve.

5 A barrel, a packing member thereon, a packer setting sleeve telescoping over said barrel and fixed to the upper end of said packing member, a setting mandrel, a setting head thereon to engage the end of said sleeve, a latching collar releasably connected with said mandrel, means on said collar engaging said setting sleeve to hold said mandrel against longitudinal movement in either direction relative to said sleeve, said latching collar and said mandrel being discon- V nectable from each other and from said sleeve by a downward screwing of said mandrel whereby said head may engage said setting sleeve.

6. A barrel, a packing member thereon, a packer setting sleeve telescoping over said barrel and fixed to the upper end of said packing member, a setting mandrel, a setting head thereon to engage the end of said sleeve, a latching collar releasably connected with said mandrel, means on said collar adapted to engage within a recess in said setting sleeve, means on said mandrel holding said engaging means in engagement within said recess whereby said mandrel is fixed against longitudinal movement relative to said sleeve, said latching collar and said mandrel being disconnectable from each other and from said sleeve by a downward screwing of said mandrel whereby said head may engage said setting sleeve and move the same downwardly to compress said packing member longitudinally, and means on said packer barrel engaging said sleeve to prevent upward movement of said sleeve relative to said barrel.

7. A barrel, a packing member thereon, a setting sleeve telescoping over said barrel and secured to said packing member, a setting mandrel, a setting head on said mandrel to engage said sleeve to force the same downwardly, means releasably connected with said mandrel to engage with said setting sleeve and prevent longitudinal movement of said mandrel relative to said sleeve in either direction, said means being releasable on rotation of said mandrel to allow said mandrel to be moved downwardly to engage said head with said sleeve.

8. A barrel, a packing member thereon, a sleeve telescoping over said barrel and secured to said packing member, a nipple on said barrel, a setting mandrel, a setting head on said mandrel to engage said sleeve to force the same downwardly, latching-means releasably connected with said mandrel to engage with said setting sleeve and prevent longitudinal movement of said mandrel relative to said sleeve in either direction, said means being releasable on rotation of said mandrel to allow said mandrel to be moved downwardly to engage said head with said sleeve, and interengaging means on said latching means and said nipple to prevent relative rotation when said latching means is engaged with said sleeve.

9. A barrel, a packing member thereon, a sleeve telescoping over said barrel and secured to said packing member, a nipple on said barrel, a

downwardly and inwardly inclined bevel on the outer surface of said nipple, a slip on said beveled surface, downwardly inclined teeth thereon to engage the inner surface of said sleeve upon relative upward movement of said slip on said nipple, a setting mandrel, a setting head on said mandrel to engage said sleeve to force the same downwardly, means releasably connected with said mandrel to engage with said setting sleeve and prevent longitudinal movement of said mandrel relative to said sleeve in either direction, said means being releasable on rotation of said mandrel to allow said mandrel to be moved downwardly to engage said head with said sleeve.

10. A barrel, a packing member thereon, a sleeve telescoping over said barrel and secured tosaid packing member, a setting mandrel, a setting head on said mandrel adapted on downward movement to engage said sleeve to force the same downwardly, a latching collar threaded on saidmandrel, means on said collar interfitting within a recess on said sleeve to latch said collar and sleeve, means on said mandrel to hold said interfitting means in engagement with said sleeve, said latching collar being released from said mandrel and said sleeve on downward screwing of said mandrel.

CICERO C. BROWN.

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