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Publication numberUS1597212 A
Publication typeGrant
Publication dateAug 24, 1926
Filing dateOct 13, 1924
Priority dateOct 13, 1924
Publication numberUS 1597212 A, US 1597212A, US-A-1597212, US1597212 A, US1597212A
InventorsSpengler Arthur F
Original AssigneeSpengler Arthur F
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Casing roller
US 1597212 A
Images(1)
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Description  (OCR text may contain errors)

ug.24,`192e. y '1,597,212 y A. F. SPENGLER CASING ROLLER Filed oct. i3, 1924 wl #L WK@ v nucfnoo ARTHUR F. SPENGLER.

Patented Aug. V24, 1925.

UNITED STATES 1,597,212 Partnrl OFFICE.

ARTHUR F. SIEENGLER, F LOS ANGELES, CALIFORNIA.

CASING ROLLER.

Application. filed October 13, 3.824.' Serial No. 743,312.

This invention relates to a device termed a casing roller, adapted for use in the con-` struction and operation of Wells such as oil Wells7 for rolling out and straightening casing collapsed therein. y

l In the construction and operation of Wells such as oil Wells, the casing of the Well is frequently Vat least partially collapsed and 0 provide a casing roller which can be more readily rotated into a collapsed casing located in an oil Well for rolling out the casing to its original diameter and may also be readily removed from Within the casing in case the tool or casing roller becomes stuck or cut in the casing'to be rolled.

Another object of the present invention is to provide a casing roller which can be. employed for straightening out collapsed casing and will more effectively restore the same to its original condition.

`Various other objects and advantages of the present invention will apear from a description of a preferred example of a casing roller embodying the invention. For this purpose reference ismade to the accompanying drawings in which a preferred example of the casing roller embodying the invention is illustrated.

Inthe drawings Figure l is an elevation; p

Fig. `2 is a transverse section on the line 2 2 of Fig. l. q

Fig. 3 is a section on'the line 3-3 of Fig. l.

Fig. 4 is a section on the line 4-4 of Fig. l; and

Fig'. 5 is an enlarged View disclosing the means for retaining certain of the balls Within the roller.

Referring to the drawings, the casing roller therein illustrated comprises a body 2 provided with means 3 at the top by which it may be attached to a rotary string and actuated during' operations, such means 3 being indicated as atapered and threaded pin. 4 indicates a flushing passage extending axially through the body 2 of the casing roller which in turn is employed for forcing flushing `fluid in advance of the casing roller in order to facilitate the tool passing through mud or other dbris which may be lodged Within the Well casing. The body 2 of the casing roller is preferably circular in cross section. rlhe portion of 'the body 2 employed for rolling is enlarged near the center 5` and tapers or curves to contract downwardly from the center and also tapers or contracts `upwardly somewhat from the center in order to facilitate both the insertion and removal ofthetool from the collapsed casing." i

The body 2 of thetool that is employed to support a plurality of rolling members, preferably the rolling members 6 at the lower end of the tool being ofball form and the other i`oller1nembers 7 being of substantially cylindrical shape.

The balls 6 of the casingroller are inserted in spherical sockets 8 adjacent the lower end of the tool andere held therein in any preferred' manner; such as crimping the edges of the body adjacent the sockets 8 partially over the balls as indicated at 9. The balls 6 of the casing roller constitute more a means for facilitatingthe insertion of the casing roller into the collapsed casing than as a means for rolling out `such casing to its original diameter, thisaction being accomplished chiefly by the substantially cylindrical rollers 7. These rollers 7 are disposed in `a plurality of series or rows and the different rollers in adjacent series are staggered with relation to each other as clearly shown in Fig. 1 of the drawings, each of these series being twisted slightly to bring the lower rollers slightlyin advance of thelupper rollers of the series. This further positions the rollers of the series at a progressively increasing angle relative to the angle of taper or curvature of the body that is at an angle with any plane through theaxis of the body 2, thus disposing the lower rollers into position whereby such rollers will tend to be rotated upon axial movement of the casing `roller into the collapsed casing,` as well as in position to rotate about their axis when the casing tool, as `a Whole, is rotated. The rollers 7 are preferably also provided With the proper tapered surfaces at theirends to facilitate the insertion and removal of the casing roller from the collapsed casing; thus thev lower rollers, such as 10, 4l1 and 12, and other corresponding rollers hidden from View in Fig. 1, are provided with tapered surfaces 13, whereas the rollers 14, 15, 16,

17, 18 and 19, and similarly disposed rollers hidden from view in Fig. 1, are provided with tapered surfaces 20, at both their ends,

the taper of such surfaces being preferably isomewhat smaller than the surfaces 13 of A'lower-rollers and is greater than that of the It willV surfaces 2O of the central rollers. also Abe observed that the lower rollers have Vtheir main rolling surfaces disposed aslant .downwardly and inwardly while the upper rollers have their ymain rolling surfaces aslant upwardly and inwardly.

Each of the rollers is positioned within semi-cylindrical recesses 25 and are mounted V.uponaxles 26 extending from both ends of the rollers and fitted into reduced recesses where the axles are held to the body by any preferred means such as crimping the edges of the body over the axles as indicated at 28, in Fig. 3. The surfaces of each of the rollers 7 project somewhat from such recesses 25 to provide independently revolvable rolling surfaces on the casing roller. The term rollers as employed in the appended claims is not intended to include balls, but refers to members mounted to revolve upon one axis only.

In operation the casing roller is attached tov a rotary string and lowered to roll out the collapsed casing. The balls 6 facilitate guiding and wedging of the casing roller into the collapsed casing and position the lower rollers of the tool which permits the same torotate and assist the wedging of the tool into -the casing. The position of the lower rollers being brought somewhat in advance of the upper rollers of each series, disposes such rollers in position to better resist the strain of the rolling operation and the rollers being disposed in staggered relation insures all parts of the casing being rolled out to the original diameter. The body 2 f the casing roller being contracted both above and below the middle, and the upper rollers thus having their projecting rolling Vsurfaces aslant upwardly and inwardly while the lower rollers have their projecting Vrolling surfaces aslant downwardly and inwardly, permits the casing roller to wedge in and straighten out the collapsed casing, and in case the casing roller should become stuck therein permits the same to be readily backed out of the casing. Thek flushing passage 4: permits the use of flushing fluid to clear out mud or the like in the way of the casing roller.

While the casing roller herein described is-well suited for accomplishing the purposes of this invention, it is understood that various modifications may be made in the details of construction without departing from the spirit of the invention.

rIlhe invention is therefore not limited to the specific construction described, but is of the scope set forth in the appended claims.

I claim 1- Y 1. A casing roller comprising a body having means at its upper-end for connecting the body to a rotary string, and a plurality of rollers mounted for independent rotation thereon, said rollers projectingbeyond the periphery of the bodygY said rollers providingrolling surfaces disposedY aslant downwardly and inwardly in relation to the longitudinal axis of the body and rolling surfaces disposed aslant upwardly and inwardly in relation to the longitudinal axis of the body.

2. A casing roller comprising a body having means at its upper end for connecting the body with a rotarystring, and a plurality of rollers mounted for independent rotation thereon. said rollers projecting beyond the periphery of the body, said rollers providing downwardly and inwardly aslant rolling surfaces at the lower part of the body and upwardly and inwardly aslant rolling surfaces at upper portion Vof the body, the lower rolling surfaces being additionally angled to position their lower ends slightly in advance ofthe upper ends.

3. In a device adapted to straighten collapsed casing in a well hole, the combination of a body having means at its upper end for connecting with a rotary string, and a plurality of independently revolvable rollers mounted thereon and providing .rolling surfaces projecting beyond the periphery of the body, said rollers providingrolling surfaces at the lower portion of the body disposed aslant downwardly and inwardly and the lower rolling surfaces being additionally angled to position their lower ends slightly in advance of the upper ends.

4. In a device of the class described, the combination of a body having means at its upper end for attachment to a rotary string. and a plurality of independently revolvable rollers mounted on the body andr providing rolling surfaces projecging beyond the periphery of the body, certain of said rollers being mounted'on axis disposed angled so as to position the lower ends of the rollers in advance of their upper ends.

5. In a casing` roller operative for use in oil wells to straighten collapsed casing, the combination of a body having means at its upper end for attachment with a rotary Vacs st-ring, .and a plurality of independently ree volvable rollers mounted on the body and providing rolling surfaces proj ectingbeyond the periphery of the body, certain of said rollers being disposed in vertically extending rows, the `rows being twisted slightly to position the lower rollers ot' the rows in advance of the upper rollers.

6. ln a casing roller operative for use in straightening collapsed casing in a well, the combination of a body having means at its upper end tor attachment with a rotary string, and a plurality of rollers independently revolvably mounted `on the body and providing rolling surfaces projecting `beyond the periphery of the body, certain of said rollers being disposed in vertically extending rows twisted somewhat their lower ends to position the lower rollers in advance ot the upper rollers, the rollers of adjacent series being staggered.

7. In a device for the purpose specified, the combination ot a body expanded at its center and having means at its upper end for attachment with a rotary string, and a plurality of rollers mounted to revolve independently on the body and providing rolling surfaces projecting beyond the periphery of the body, certain of said rollers being disposed in vertically extending rows twisted slightly to position the lower rollers in advance of the upper rollers and at an angle with vertical planes through the axis of the body, the upper rollers of the rows having their rolling surfaces aslant upwardly and inwardly and the lower rollers of the rows having their rolling surfaces aslant downwardly and inwardly.

8. In a casing roller for the purpose specied, the combination of a body expanded at its center and having means at its upper end for attachment with a rotary string and provided with a flushing passage extending therethrough, and a plurality of 'rollers mounted to revolve independently on the body and providing rolling surfaces pro jecting beyond the periphery of the body, certain of said rollers being disposed in vertically extending rows twisted somewhat to position the lower rollers in advance of the upper rollers and at an angle with vertical planes through the axis of the body, the upper rollers of the rows having their rolling surfaces aslant upwardly and inwardly and the lower rollers ot the rows having their rolling surfaces aslant downwardly and inwardly, the rollers of adjacent series being staggered. 9. In a device for the purpose specified, the combination of a body expanded at its center and having means at its upper end tor attachment with a rotary string, anda plurality of roller-s mounted to revolve independently on the body providing a rolling surface projecting beyond the periphery of the body, certain of said rollers being' disposed in vertically extending rows twisted somewhat to` position the lower rollers in `aslant downwardly and inwardly, the adjacent rows being staggered,

l0.` ln a casing roller for the purpose specilied, the combination of a body expanded at its center having means at its upper end for attachment with a rotary string, and provided. with a iiushing passage extending therethrough, a plurality of rollers mounted to revolve independently of the body and providing rolling surfaces projecting beyond the periphery of the body, certain of said rollers being disposed in vertically extending rows twisted slightly to position the lower rollers in advance of the upper rollers and angled relative to vertical planes through the axis of the body, the upper rollers oi the rows having their rolling surfaces aslant upwardly and inwardly and the lower rollers ot the series having their rolling surfaces aslant downwardly and inwardly, the rollers ot adjacent series being staggered, the

`rollers being mounted upon axles, and the body being crimped over the ends of the axles to secure the same rigidly thereto, the body further having sockets below the lower rollers and balls mounted in said sockets.

11. A casing roller for the purpose specified, comprising a combination of a body expanded at its center and having means at its upper end for attachment with a rotary string, the body being provided with a flushing passage extending therethrough, a plurality of rollers revolvably mounted on axles independently secured to the body, the body being crimped over the ends of the axles, the body having recesses housing the major portion olif the rollers, such rollers providing rolling surfaces projecting beyond the periphery of the body, certain of said rollers being disposed in vertical rows, the lower rollers or' the rows being positioned slightly in advance of the upper rollers and angled relative to vertical planes through the axis of the body, the upper rollers in the rows having their rolling surfaces aslant upwardly and inwardly, and the lower rollers of the series having their rolling surfaces aslant downwardly and inwardly, the rollers of ad" jacent series being staggered, the lower rollers having downwardly tapering ends, the upper rollers having upwardly tape-ring ends, the body being provided with a plurality of sockets below the lower rollers and a plurality olf balls revolvably mounted within said sockets and projecting therefrom.

12. In a d-eyice for the purpose specified, the combination of a body having means at its upper end for attachment to a rotary string, a plurality of rollers mounted for independent rotation thereon, said rollers projecting. beyond the periphery of the body, said rollers providing rolling surfaces disposed aslant downwardly and inwardly and rolling surfaces disposed aslant upwardly and inwardly, the body being provided with sockets below the lower rollers, and a plurality of balls revolvably mounted within said sockets `and projecting beyond the periphery of the body.

13. A casing roller comprising a body having means at its upper end for connecting the body to a rotary string, a plurality of rollers mounted upon axles independently secured to the body, the body being crimped over the ends of the axles, said rollers lying in recesses in the body and projecting beyond the periphery of the body to provide rolling surfaces, certain of which are disposed aslant downwardly and inwardly, and certain of which are disposed aslant upwardly and inwardly.

14. A casing roller comprising a body having means at its upper end for attachment to a rotary string, a plurality of rollers mounted in recesses in the body upon axles, the edges of the reces-s being crimped over the axles of the rollers, said rollers providing projecting rolling surfaces, and a flushing passage extending through the body.

Signed at Los Angeles, California, this G day of October, 1924.

ARTHUR. r. SPENGLER.

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Classifications
U.S. Classification72/75, 72/112
International ClassificationB21D39/10, B21D39/08
Cooperative ClassificationB21D39/10, E21B43/105
European ClassificationB21D39/10, E21B43/10F1