US2718266A - Stop devices for well conduits - Google Patents

Stop devices for well conduits Download PDF

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US2718266A
US2718266A US261656A US26165651A US2718266A US 2718266 A US2718266 A US 2718266A US 261656 A US261656 A US 261656A US 26165651 A US26165651 A US 26165651A US 2718266 A US2718266 A US 2718266A
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string
running
casing
sections
slips
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US261656A
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John R Berry
Ralph N Fost
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Baker Hughes Oilfield Operations LLC
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Baker Oil Tools Inc
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/1014—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well
    • E21B17/1021—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well with articulated arms or arcuate springs
    • E21B17/1028—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well with articulated arms or arcuate springs with arcuate springs only, e.g. baskets with outwardly bowed strips for cementing operations

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  • the present invention relates to subsurface well equipment, and more particularly to devices capable of being mounted on well casing, liner, tubing, and similar conduit strings, for moving apparatus on said strings longitudinally through the well bore.
  • Apparatus such as centralizers, wall scratchers and cement baskets are mounted on casing or similar conduit strings, being moved longitudinally through the well bore with the casing string because of their engagement with one or more stop devices secured to the casing string.
  • An object of the present invention is to provide a comparatively simple stop device of the character indicated which is easily mounted upon and secured to the conduit string.
  • Another object of the invention is to provide a stop device that is readily and securely mountable on the conduit string without the necessity for welding it to the latter.
  • a further object of the invention is to provide a stop device that can be securely assembled to the conduit string and which tends to more firmly tighten itself on the conduit string as a result of its engagement with other apparatus disposed on the conduit string.
  • Figure 1 is a side elevation of the apparatus as mounted on a casing section disposed in a well bore;
  • Fig. 2 is a side elevation, partly in longitudinal section, of the stop device illustrated in Fig. 1, disclosed in position on a casing section;
  • Fig. 3 is a cross-section taken along the line 33 on Fig. 2;
  • Fig. 4 is an isometric projection of the outer sectional lock ring or sleeve, with one portion thereof in open position.
  • the device A illustrative of the invention is shown in the drawings in connection with a casing centralizer B mounted on a string of well casing C, or running-in string, positionable in a well bore D. It is to be understood, however, that the device is also useful in other relationships, being adapted for engagement with wall scratchers, cementing baskets, and other apparatus, mounted on a casing, or similar conduit, string, and to be moved longitudinally through the well bore with such conduit string, as Well as being supported on the latter.
  • a casing centralizer B is mounted on a casing secton C disposed in a well bore D.
  • the centralizer includes upper and lower longitudinally spaced collars 10, 11 slidable on the casing section C, which are interconnected by circumferentia'lly spaced outwardly bowed leaf spring members 12 attached to the upper and lower collars in any suitable manner, as by use of welding material 13.
  • the springs 12 engage the wall of the well bore D, and tend to center the well casing C therewithin.
  • the centralizer or centering apparatus B is movable longitudinally through the well bore D upon longitudinal movement of the casing C.
  • a stop device A is secured to the casing section between the upper and lower casing collars 10, 11, this stop device being engageable with the inner edges 14 of the collars to pull the centralizer apparatus B through the well bore.
  • the stop device A will engage the upper edge 14 of the lower collar 11 when the casing C is moving downwardly in the well bore, to pull the apparatus B and its outwardly bowed springs 12 through the well bore and past any restrictions that might be encountered therein. If the casing string is moved in an upward direction, the stop device A will engage the lower edge 14 of the upper collar 10 and pull the centering device B in an upward direction with the casing string.
  • the stop device A is easily mounted upon the casing section C between the centralizer collars 10, 11.
  • the device includes an outer sectional or split lock ring .or sleeve 15, which, as disclosed in the drawings, consists of two parts 16, 17 that can be moved transversely of the casing C toward each other.
  • One end or section 16 of the ring 15 has one or more tongues or dovetails 18 adapted to be received in one or more companion sockets 19 in the adjoining end of the other sleeve section 17.
  • a pair of longitudinally separated tongues 18 on one section 16 are receivable within a pair of longitudinally separated companion sockets 19 in an adjacent section 17, the tongues and sockets forming a dovetailed type of of joint in which the oppositely directed wing portions 20, 20 of each tongue 18 provide hooks engageable with companion hooks 21, 21 defining the outer portion of each socket 19.
  • the shank .22 of each tongue is receivable within a slot or groove 23 in the adjoining section extending from the socket 19 to the longitudinal edge 24 of the section.
  • the segmental ring 15, which is illustrated as being formed of two like sections 16, 17, is disposed transversely of the casing section C between the centralizer collars 10, 11, and the tongues 18 on one section 16 or 17 disposed in the adjoining slots 23 and sockets 19 of the other section 17 or 16, thus latching or locking the sections 16, 17 together to form a circumferentially continuous sleeve or ring 15.
  • This sleeve or ring has an inside diameter that is greater than the outside diameter of the casing section C, to provide an annular clearance space 25 therebetween in which a pair of opposed segmental gripping elements 26, 27 may be disposed.
  • An upper segmental annular gripping element 26 is composed of a pair or a plurality of slips having inwardly directed wickers or teeth 28 adapted to dig into or grip the casing section.
  • the periphery 29 of the slips 26 is tapered in a downward and inward direction, this tapered surface cooperating with the upper edge 36 of the lock ring 15, to be wedged inwardly by the latter into firm gripping engagement with the casing section C.
  • the lower pair or plurality of segmental slips 27 have inner wickers or teeth 31 adapted to grip the casing section and also a tapered peripheral surface 32 which is inclined in an upward and inward direction for cooperation with .the lower edge 33 of the lock ring or sleeve 15, being urged inwardly by the latter to place its wickers 31 in firm gripping engagement with the casing section.
  • one set of slips as the upper slips 26, may be disposed around the casing and inserted within the lock ring 15, being driven downwardly within the latter so that the slip segments are wedged against the casing section.
  • the other set of slips such as the lower slips 27, is then disposed upon the casing section and moved upwardly into the annular space 25 between the lock ring 15 and the casing C, being driven upwardly within the ring so that its tapered surface 32 wedges the slip segments into firm gripping engagement with the casing.
  • the segments 26 of the upper slips have their upper edges 34 in alignment with each other, forming a substantially circumferentially continuous edge engageable with the lower end 14 of the upper collar 10.
  • the segments 27 of the lower slips have their lower edge 35 in transverse alignment with each other, to provide a substantially circumferentially continuous lower end engageable with the upper edge 14 of the lower collar 11.
  • the lower slips 27 engage the lower collar 11, to force the centralizer device through the well bore.
  • the force necessary to perform this function is imposed upon the lower slips 27 and tends to shift them relatively upward into the lock ring or sleeve 15 to a further extent, causing the lower slips 27 to be wedged still more firmly between the lock ring 15 and the casing section C, because of the tapered external surface 32 on the slips.
  • the stop de vice From a consideration of the structure of the stop de vice, it is evident that it is comparatively simple, and readily mountable on the casing section C between the upper and lower centralizer collars 10, 11. Once mounted on the casing section, it is permanently secured to the latter, since the force transmitted to the stop device A tends to tighten it more securely against the casing.
  • a split annular member adapted to be moved transversely into position around the running-in string; means for latching the adjoining end portions of the member together; and oppositely directed segmental slips extending partly into said member to be wedged by said member into gripping engagement with the running-in string.
  • a split annular member adapted to be moved transversely into position around the running-in string; means for latching the adjoining end portions of the member together; and oppositely directed upper and lower segmental slips extending partly into said member and having internal teeth to grip the running-in string, said upper slips having an external surface engageable with said member and tapering downwardly and inwardly, said lower slips having an external surface engageable with said member and tapering upwardly and inwardly.
  • annular member composed of separate sections to be placed around the running-in string; means for latching the adjoining end portions of said sections to each other to form a composite, substantially circumferentially continuous annular member; and oppositely directed upper and lower segmental slips extending partly into said sections and having internal teeth to grip the running-in string, said upper slips having an external surface engageable with said sections and tapering downwardly and inwardly, said lower slips having an external surface engageable with said sections and tapering upwardly and inwardly.
  • annular member composed of separate sections to be placed around the running-in string; interlocking tongues and grooves at the adjoining end portions of said sections for securing said sections to each other to provide a composite, substantially circumferentially continuous annular member; and oppositely directed upper and lower annular slips extending partly into said sections and having internal teeth to grip the running-in string, said upper slips having an external surface engageable with said sections and tapering downwardly and inwardly, said lower slips having an external surface engageable with said sections and tapering upwardly and inwardly.
  • an annular member composed of separate sections to be placed around the running-in string; means for latching the adjoining end portions of said sections to each other, comprising a dovetailed tongue on one section disposed within a companion dovetailed socket in the adjoining sec tion; and oppositely directed upper and lower annular slips extending partly into said sections and having internal teeth to grip the running-in string, said upper slips having an external surface engageable with said sections and tapering downwardly and inwardly, said lower slips having an external surface engageable with said sections and tapering upwardly and inwardly.
  • a running-in string to be lowered in a well bore; an apparatus on said running-in string and movable longitudinally with respect thereto; a split annular member adapted to be moved transversely into position around the running-in string; means for latching the adjoining end portions of the member together around the running-in string; and gripping means engaging the member and running-in string to secure the member to the running-in string, said gripping means extending longitudinally beyond the member and engageable by the apparatus, whereby to be urged by the apparatus longitudinally of the member and inwardly by the member to be more firmly engaged between and with the running-in string and member.
  • a running-in string to be lowered in a well bore; an apparatus on said running-in string and movable longitudinally with respect thereto; an annular member composed of separate sections to be placed around the running-in string; means for latching the adjoining end portions of said sections to each other to form a composite, substantially circumferentially continuous annular member; and gripping means engaging the sectionsiof the member and the running-in string to secure the member to the running-in string, said gripping means extending longitudinally beyond the sections and engageable by the apparatus, whereby to be urged by the apparatus longitudinally of the sections and inwardly by the sections to be more firmly engaged between and with the running-in string and sections.
  • a running-in string to be lowered in a well bore; an apparatus on said running-in string and movable longitudinally with respect thereto; a split annular member adapted to be moved transversely into position around the running-in string; interlocking tongues and grooves in the adjoining end portions of the member for securing such end portions to each other; and gripping means engaging the member and running-in string to secure the member to the running-in string, said gripping means extending longitudinally beyond the member and engageable by the apparatus, whereby to be urged by the apparatus longitudinally of the member and inwardly by the member to be more firmly engaged between and with the running-in string and member.
  • a running-in string to be lowered in a well bore; an apparatus on said running-in string and movable longitudinally with respect thereto; an annular member composed of separate sections to be moved transversely into position around the running-in string; interlocking tongues and grooves in the adjoining end portions of the sections for securing such end portions to each other to provide a composite, substantially circumferentially continuous annular member; and gripping means engaging the sections of the member and running-in string to secure the member to the running-in string, said gripping means extending longitudinally beyond the member and engageable by the apparatus, whereby to be urged by the apparatus longitudinally of the sections and inwardly by the sections to be more firmly engaged between and with the running-in string and sections.
  • a running-in string to be lowered in a well bore; an apparatus on said running-in string and movable longitudinally with respect thereto; a split annular member adapted to be moved transversely into position around the running-in string; means for latching the adjoining end portions of the member together around the running-in string; and slip means disposed within and engaging the member and having internal teeth engaging the running-in string to secure the member to the runningin string, said slip means extending longitudinally beyond the member and adapted to engage the apparatus to be moved by the apparatus longitudinally of the member and inwardly by the member into gripping engagement with the running-in string.
  • a running-in string to be lowered in a well bore; an apparatus on said running-in string and movable longitudinally with respect thereto; a split annular member adapted to be moved transversely into position around the running-in string; interlocking tongues and grooves in the adjoining end portions of the member for securing such end portions to each other; and slip means disposed within and engaging the member and having teeth engaging the running-in string to secure the member to the running-in string, said slip means extending longitudinally beyond the member and adapted to engage the apparatus to be urged by the apparatus longitudinally of the member and inwardly by the member into gripping engagement with the running-in string.
  • a running-in string to be lowered in a well bore; an apparatus on said running-in string and movable longitudinally with respect thereto; a split annular member adapted to be moved transversely into position around the running-in string; means for latching the adjoining end portions of the member together around the running-in string; and a coupling member engaging said annular member and running-in string to secure said annular member to said running-in string; one of said members being engageable by the apparatus, whereby to be urged by the apparatus longitudinally of said other member to be more firmly engaged between and with the running-in string and annular member.
  • a running-in string to be lowered in a well bore; an apparatus on said running-in string and movable logitudinally with respect thereto; a split annular member adapted to be moved transversely into position around the running-in string; means for latching the adjoining end portions of the member together around the running-in string; a slip member disposed within and engaging said annular member and having teeth engaging said running-in string to secure said annular-member to said running-in string, one of said members being engageable with the apparatus to be moved by the apparatus longitudinally of said other member to urge said slip member inwardly into gripping engagement with the running-in string.

Description

Sept. 20, 1955 J. R. BER-RY ETAL STOP DEVICES FOR WELL CONDUITS Filed Dec. 14, 1951 INVENTORS. foH/v B. BEQQK B RALPH M Isr,
ATTOENEYS United States Patent STOP DEVICES FOR WELL coNnUrrs John R. Berry, Huntington Park, and Ralph N. Fost, Norwalk, Califl, assignors to Baker Oil Tools, Inc., Los Angeles, Calif., a corporation of California Application December 14, 1951, Serial No. 261,656
13 Claims. (Cl. 166243) The present invention relates to subsurface well equipment, and more particularly to devices capable of being mounted on well casing, liner, tubing, and similar conduit strings, for moving apparatus on said strings longitudinally through the well bore.
Apparatus, such as centralizers, wall scratchers and cement baskets are mounted on casing or similar conduit strings, being moved longitudinally through the well bore with the casing string because of their engagement with one or more stop devices secured to the casing string.
An object of the present invention is to provide a comparatively simple stop device of the character indicated which is easily mounted upon and secured to the conduit string.
Another object of the invention is to provide a stop device that is readily and securely mountable on the conduit string without the necessity for welding it to the latter.
A further object of the invention is to provide a stop device that can be securely assembled to the conduit string and which tends to more firmly tighten itself on the conduit string as a result of its engagement with other apparatus disposed on the conduit string.
This invention possesses many other advantages, and has other objects which may be made more clearly apparent from a consideration of a form in which it may be embodied. This form is shown in the drawings accompanying and forming part of the present specification. It will now be described in detail, for the purpose of illustrating the general principles of the invention; but it is to be understood that such detailed description is not to be taken in a limiting sense, since the scope of the invention is best defined by the appended claims.
Referring to the drawings:
Figure 1 is a side elevation of the apparatus as mounted on a casing section disposed in a well bore;
Fig. 2 is a side elevation, partly in longitudinal section, of the stop device illustrated in Fig. 1, disclosed in position on a casing section;
Fig. 3 is a cross-section taken along the line 33 on Fig. 2;
Fig. 4 is an isometric projection of the outer sectional lock ring or sleeve, with one portion thereof in open position.
The device A illustrative of the invention is shown in the drawings in connection with a casing centralizer B mounted on a string of well casing C, or running-in string, positionable in a well bore D. It is to be understood, however, that the device is also useful in other relationships, being adapted for engagement with wall scratchers, cementing baskets, and other apparatus, mounted on a casing, or similar conduit, string, and to be moved longitudinally through the well bore with such conduit string, as Well as being supported on the latter.
As shown in the drawings, a casing centralizer B is mounted on a casing secton C disposed in a well bore D. The centralizer includes upper and lower longitudinally spaced collars 10, 11 slidable on the casing section C, which are interconnected by circumferentia'lly spaced outwardly bowed leaf spring members 12 attached to the upper and lower collars in any suitable manner, as by use of welding material 13. The springs 12 engage the wall of the well bore D, and tend to center the well casing C therewithin.
The centralizer or centering apparatus B is movable longitudinally through the well bore D upon longitudinal movement of the casing C. Thus, a stop device A is secured to the casing section between the upper and lower casing collars 10, 11, this stop device being engageable with the inner edges 14 of the collars to pull the centralizer apparatus B through the well bore. Thus, the stop device A will engage the upper edge 14 of the lower collar 11 when the casing C is moving downwardly in the well bore, to pull the apparatus B and its outwardly bowed springs 12 through the well bore and past any restrictions that might be encountered therein. If the casing string is moved in an upward direction, the stop device A will engage the lower edge 14 of the upper collar 10 and pull the centering device B in an upward direction with the casing string.
The stop device A is easily mounted upon the casing section C between the centralizer collars 10, 11. Thus, the device includes an outer sectional or split lock ring .or sleeve 15, which, as disclosed in the drawings, consists of two parts 16, 17 that can be moved transversely of the casing C toward each other. One end or section 16 of the ring 15 has one or more tongues or dovetails 18 adapted to be received in one or more companion sockets 19 in the adjoining end of the other sleeve section 17. As illustrated, a pair of longitudinally separated tongues 18 on one section 16 are receivable Within a pair of longitudinally separated companion sockets 19 in an adjacent section 17, the tongues and sockets forming a dovetailed type of of joint in which the oppositely directed wing portions 20, 20 of each tongue 18 provide hooks engageable with companion hooks 21, 21 defining the outer portion of each socket 19. The shank .22 of each tongue is receivable within a slot or groove 23 in the adjoining section extending from the socket 19 to the longitudinal edge 24 of the section.
The segmental ring 15, which is illustrated as being formed of two like sections 16, 17, is disposed transversely of the casing section C between the centralizer collars 10, 11, and the tongues 18 on one section 16 or 17 disposed in the adjoining slots 23 and sockets 19 of the other section 17 or 16, thus latching or locking the sections 16, 17 together to form a circumferentially continuous sleeve or ring 15. This sleeve or ring has an inside diameter that is greater than the outside diameter of the casing section C, to provide an annular clearance space 25 therebetween in which a pair of opposed segmental gripping elements 26, 27 may be disposed. An upper segmental annular gripping element 26 is composed of a pair or a plurality of slips having inwardly directed wickers or teeth 28 adapted to dig into or grip the casing section. The periphery 29 of the slips 26 is tapered in a downward and inward direction, this tapered surface cooperating with the upper edge 36 of the lock ring 15, to be wedged inwardly by the latter into firm gripping engagement with the casing section C. Similarly, the lower pair or plurality of segmental slips 27 have inner wickers or teeth 31 adapted to grip the casing section and also a tapered peripheral surface 32 which is inclined in an upward and inward direction for cooperation with .the lower edge 33 of the lock ring or sleeve 15, being urged inwardly by the latter to place its wickers 31 in firm gripping engagement with the casing section.
After the latch or lock ring sections 16, 17 have been disposed around the casing C between the centralizer collars 10, 11, with the tongues 18 of one section 16 or 17 disposed in the companion sockets 19 and slots 23 of the other section 17 or 16, one set of slips, as the upper slips 26, may be disposed around the casing and inserted within the lock ring 15, being driven downwardly within the latter so that the slip segments are wedged against the casing section. The other set of slips, such as the lower slips 27, is then disposed upon the casing section and moved upwardly into the annular space 25 between the lock ring 15 and the casing C, being driven upwardly within the ring so that its tapered surface 32 wedges the slip segments into firm gripping engagement with the casing. The segments 26 of the upper slips have their upper edges 34 in alignment with each other, forming a substantially circumferentially continuous edge engageable with the lower end 14 of the upper collar 10. Similarly, the segments 27 of the lower slips have their lower edge 35 in transverse alignment with each other, to provide a substantially circumferentially continuous lower end engageable with the upper edge 14 of the lower collar 11. The wedging of the slips 26, 27 within the ring 15 holds the latter outwardly of the casing section and substantially coaxial thereof, the dovetailed joints 18, 19 being pulled laterally outward but being prevented from inadvertent disconnection because of the interengagement between the interlocking wings or hooks 20, 21 on the ring sections 16, 17.
Assuming that the casing string C is being moved downwardly in the well bore, the lower slips 27 engage the lower collar 11, to force the centralizer device through the well bore. The force necessary to perform this function is imposed upon the lower slips 27 and tends to shift them relatively upward into the lock ring or sleeve 15 to a further extent, causing the lower slips 27 to be wedged still more firmly between the lock ring 15 and the casing section C, because of the tapered external surface 32 on the slips. Similarly, in the event that the casing section C is moved upwardly, the upper slips 26 will engage the upper collar 10 of the centralizer, the force of such engagement necessary to move the centralizer in an upward direction within the well bore tending to move the upper slips 26 relatively downward within the lock ring 15, wedging the slips 26 more firmly in the latter and against the casing section C, because of the direction of taper of the outer surface 29 of the slips. It is, accordingly, apparent that the force transmitted between the casing C and a centering device B tends to secure the stop device A more firmly to the casing section, offering assurance that the stop device will be maintained in appropriate assembled relation and permanently fixed to the casing section C.
From a consideration of the structure of the stop de vice, it is evident that it is comparatively simple, and readily mountable on the casing section C between the upper and lower centralizer collars 10, 11. Once mounted on the casing section, it is permanently secured to the latter, since the force transmitted to the stop device A tends to tighten it more securely against the casing.
The inventors claim:
1. In a stop device adapted to be mounted on a running-in string to be lowered in a well bore: a split annular member adapted to be moved transversely into position around the running-in string; means for latching the adjoining end portions of the member together; and oppositely directed segmental slips extending partly into said member to be wedged by said member into gripping engagement with the running-in string.
2. In a stop device adapted to be mounted on a running-in string to be lowered in a Well bore: a split annular member adapted to be moved transversely into position around the running-in string; means for latching the adjoining end portions of the member together; and oppositely directed upper and lower segmental slips extending partly into said member and having internal teeth to grip the running-in string, said upper slips having an external surface engageable with said member and tapering downwardly and inwardly, said lower slips having an external surface engageable with said member and tapering upwardly and inwardly.
3. In a stop device adapted to be mounted on a running-in string to be lowered in a well bore: an annular member composed of separate sections to be placed around the running-in string; means for latching the adjoining end portions of said sections to each other to form a composite, substantially circumferentially continuous annular member; and oppositely directed upper and lower segmental slips extending partly into said sections and having internal teeth to grip the running-in string, said upper slips having an external surface engageable with said sections and tapering downwardly and inwardly, said lower slips having an external surface engageable with said sections and tapering upwardly and inwardly.
4. In a stop device adapted to be mounted on a running-in string to be lowered in a well bore: an annular member composed of separate sections to be placed around the running-in string; interlocking tongues and grooves at the adjoining end portions of said sections for securing said sections to each other to provide a composite, substantially circumferentially continuous annular member; and oppositely directed upper and lower annular slips extending partly into said sections and having internal teeth to grip the running-in string, said upper slips having an external surface engageable with said sections and tapering downwardly and inwardly, said lower slips having an external surface engageable with said sections and tapering upwardly and inwardly.
5. In a stop device adapted to be mounted on a running-in string to be lowered in a well bore: an annular member composed of separate sections to be placed around the running-in string; means for latching the adjoining end portions of said sections to each other, comprising a dovetailed tongue on one section disposed within a companion dovetailed socket in the adjoining sec tion; and oppositely directed upper and lower annular slips extending partly into said sections and having internal teeth to grip the running-in string, said upper slips having an external surface engageable with said sections and tapering downwardly and inwardly, said lower slips having an external surface engageable with said sections and tapering upwardly and inwardly.
6. In combination: a running-in string to be lowered in a well bore; an apparatus on said running-in string and movable longitudinally with respect thereto; a split annular member adapted to be moved transversely into position around the running-in string; means for latching the adjoining end portions of the member together around the running-in string; and gripping means engaging the member and running-in string to secure the member to the running-in string, said gripping means extending longitudinally beyond the member and engageable by the apparatus, whereby to be urged by the apparatus longitudinally of the member and inwardly by the member to be more firmly engaged between and with the running-in string and member.
7. In combination: a running-in string to be lowered in a well bore; an apparatus on said running-in string and movable longitudinally with respect thereto; an annular member composed of separate sections to be placed around the running-in string; means for latching the adjoining end portions of said sections to each other to form a composite, substantially circumferentially continuous annular member; and gripping means engaging the sectionsiof the member and the running-in string to secure the member to the running-in string, said gripping means extending longitudinally beyond the sections and engageable by the apparatus, whereby to be urged by the apparatus longitudinally of the sections and inwardly by the sections to be more firmly engaged between and with the running-in string and sections.
8. In combination: a running-in string to be lowered in a well bore; an apparatus on said running-in string and movable longitudinally with respect thereto; a split annular member adapted to be moved transversely into position around the running-in string; interlocking tongues and grooves in the adjoining end portions of the member for securing such end portions to each other; and gripping means engaging the member and running-in string to secure the member to the running-in string, said gripping means extending longitudinally beyond the member and engageable by the apparatus, whereby to be urged by the apparatus longitudinally of the member and inwardly by the member to be more firmly engaged between and with the running-in string and member.
9. In combination: a running-in string to be lowered in a well bore; an apparatus on said running-in string and movable longitudinally with respect thereto; an annular member composed of separate sections to be moved transversely into position around the running-in string; interlocking tongues and grooves in the adjoining end portions of the sections for securing such end portions to each other to provide a composite, substantially circumferentially continuous annular member; and gripping means engaging the sections of the member and running-in string to secure the member to the running-in string, said gripping means extending longitudinally beyond the member and engageable by the apparatus, whereby to be urged by the apparatus longitudinally of the sections and inwardly by the sections to be more firmly engaged between and with the running-in string and sections.
10. In combination: a running-in string to be lowered in a well bore; an apparatus on said running-in string and movable longitudinally with respect thereto; a split annular member adapted to be moved transversely into position around the running-in string; means for latching the adjoining end portions of the member together around the running-in string; and slip means disposed within and engaging the member and having internal teeth engaging the running-in string to secure the member to the runningin string, said slip means extending longitudinally beyond the member and adapted to engage the apparatus to be moved by the apparatus longitudinally of the member and inwardly by the member into gripping engagement with the running-in string.
11. In combination: a running-in string to be lowered in a well bore; an apparatus on said running-in string and movable longitudinally with respect thereto; a split annular member adapted to be moved transversely into position around the running-in string; interlocking tongues and grooves in the adjoining end portions of the member for securing such end portions to each other; and slip means disposed within and engaging the member and having teeth engaging the running-in string to secure the member to the running-in string, said slip means extending longitudinally beyond the member and adapted to engage the apparatus to be urged by the apparatus longitudinally of the member and inwardly by the member into gripping engagement with the running-in string.
12. In combination: a running-in string to be lowered in a well bore; an apparatus on said running-in string and movable longitudinally with respect thereto; a split annular member adapted to be moved transversely into position around the running-in string; means for latching the adjoining end portions of the member together around the running-in string; and a coupling member engaging said annular member and running-in string to secure said annular member to said running-in string; one of said members being engageable by the apparatus, whereby to be urged by the apparatus longitudinally of said other member to be more firmly engaged between and with the running-in string and annular member.
13. In combination: a running-in string to be lowered in a well bore; an apparatus on said running-in string and movable logitudinally with respect thereto; a split annular member adapted to be moved transversely into position around the running-in string; means for latching the adjoining end portions of the member together around the running-in string; a slip member disposed within and engaging said annular member and having teeth engaging said running-in string to secure said annular-member to said running-in string, one of said members being engageable with the apparatus to be moved by the apparatus longitudinally of said other member to urge said slip member inwardly into gripping engagement with the running-in string.
References Cited in the file of this patent UNITED STATES PATENTS Baker July 8, 1952
US261656A 1951-12-14 1951-12-14 Stop devices for well conduits Expired - Lifetime US2718266A (en)

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Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2828824A (en) * 1955-01-20 1958-04-01 Baker Oil Tools Inc Stop devices for well conduits
US2860013A (en) * 1956-02-29 1958-11-11 James F Medearis Tool joint protector
US2872226A (en) * 1955-12-02 1959-02-03 B And W Inc Stop collar for a well pipe
US3023036A (en) * 1958-10-10 1962-02-27 Borg Warner Stop collar
US3028182A (en) * 1961-03-20 1962-04-03 Weatherford Oil Tool Company I Stop collar
US3040405A (en) * 1958-10-13 1962-06-26 B & W Inc Compression type stop collar
US3209836A (en) * 1963-02-01 1965-10-05 Trojan Inc Strong bow centralizer
US3484141A (en) * 1967-06-19 1969-12-16 Charles H Collett Oil well protector
US4021083A (en) * 1976-03-18 1977-05-03 Halliburton Company Snap-lock end ring
US4915535A (en) * 1987-12-02 1990-04-10 Willetts Charles A Connector
US5692563A (en) * 1995-09-27 1997-12-02 Western Well Tool, Inc. Tubing friction reducer
US6533034B1 (en) * 2000-05-15 2003-03-18 Flotek Industries, Inc. Centralized stop collar for floating centralizer
US20030070803A1 (en) * 2000-09-06 2003-04-17 Casetech International, Inc. Dual diameter and rotating centralizer/sub and method
US20040112592A1 (en) * 2000-09-06 2004-06-17 Casetech International, Inc. Dual diameter and rotating centralizer/sub
US20040226714A1 (en) * 2003-05-14 2004-11-18 Rogers Henry E. Limit clamp for use with casing attachments
US20080283253A1 (en) * 2007-05-16 2008-11-20 Frank's International, Inc. Expandable Centralizer For Expandable Pipe String
WO2008144249A2 (en) * 2007-05-16 2008-11-27 Frank's International, Inc. Expandable centralizer for expandable pipe string
US20090025929A1 (en) * 2007-07-26 2009-01-29 Frank's International, Inc. Apparatus for and Method of Deploying a Centralizer Installed on an Expandable Casing String
US20090307871A1 (en) * 2008-06-11 2009-12-17 Protorsion Hinge Co., Ltd. Hinge structure having a knuckle with anti-unfolding property
US20090308615A1 (en) * 2008-06-11 2009-12-17 Frank's International, Inc. Modular Low-Clearance Centralizer and Method of Making Modular Low-Clearance Centralizer
US20100078173A1 (en) * 2008-09-29 2010-04-01 Frank's International, Inc. Downhole device actuator and method
US7845061B2 (en) 2007-05-16 2010-12-07 Frank's International, Inc. Low clearance centralizer and method of making centralizer
US20110042102A1 (en) * 2009-08-18 2011-02-24 Frank's International, Inc. Method of and kit for installing a centralizer on a pipe segment
US20120227959A1 (en) * 2007-05-16 2012-09-13 Frank's International, Inc. Expandable centralizer for expandable pipe string
US9759023B2 (en) 2007-05-16 2017-09-12 Antelope Oil Tool & Mfg. Co. Apparatus for securing a centralizer to a tubular
US9771763B2 (en) 2007-05-16 2017-09-26 Antelope Oil Tool & Mfg. Co. Low-clearance centralizer

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1613039A (en) * 1923-06-19 1927-01-04 Mclaren Automobile Signal Comp Drill-collar protector
US1889059A (en) * 1930-03-29 1932-11-29 Harry E Dennie Well casing protector
US2174085A (en) * 1938-02-09 1939-09-26 Hartman William Walter Centering device
US2602512A (en) * 1949-02-12 1952-07-08 Baker Oil Tools Inc Casing centering device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1613039A (en) * 1923-06-19 1927-01-04 Mclaren Automobile Signal Comp Drill-collar protector
US1889059A (en) * 1930-03-29 1932-11-29 Harry E Dennie Well casing protector
US2174085A (en) * 1938-02-09 1939-09-26 Hartman William Walter Centering device
US2602512A (en) * 1949-02-12 1952-07-08 Baker Oil Tools Inc Casing centering device

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2828824A (en) * 1955-01-20 1958-04-01 Baker Oil Tools Inc Stop devices for well conduits
US2872226A (en) * 1955-12-02 1959-02-03 B And W Inc Stop collar for a well pipe
US2860013A (en) * 1956-02-29 1958-11-11 James F Medearis Tool joint protector
US3023036A (en) * 1958-10-10 1962-02-27 Borg Warner Stop collar
US3040405A (en) * 1958-10-13 1962-06-26 B & W Inc Compression type stop collar
US3028182A (en) * 1961-03-20 1962-04-03 Weatherford Oil Tool Company I Stop collar
US3209836A (en) * 1963-02-01 1965-10-05 Trojan Inc Strong bow centralizer
US3484141A (en) * 1967-06-19 1969-12-16 Charles H Collett Oil well protector
US4021083A (en) * 1976-03-18 1977-05-03 Halliburton Company Snap-lock end ring
US4915535A (en) * 1987-12-02 1990-04-10 Willetts Charles A Connector
US5692563A (en) * 1995-09-27 1997-12-02 Western Well Tool, Inc. Tubing friction reducer
US6533034B1 (en) * 2000-05-15 2003-03-18 Flotek Industries, Inc. Centralized stop collar for floating centralizer
US7156171B2 (en) 2000-09-06 2007-01-02 Casetech International, Inc. Dual diameter and rotating centralizer/sub
US20040112592A1 (en) * 2000-09-06 2004-06-17 Casetech International, Inc. Dual diameter and rotating centralizer/sub
US20050241822A1 (en) * 2000-09-06 2005-11-03 Casetech International, Inc. Dual diameter and rotating centralizer/sub and method
US7140432B2 (en) 2000-09-06 2006-11-28 Casetech International, Inc. Dual diameter and rotating centralizer/sub and method
US20030070803A1 (en) * 2000-09-06 2003-04-17 Casetech International, Inc. Dual diameter and rotating centralizer/sub and method
US7182131B2 (en) 2000-09-06 2007-02-27 Casetech International, Inc. Dual diameter and rotating centralizer/sub and method
US20040226714A1 (en) * 2003-05-14 2004-11-18 Rogers Henry E. Limit clamp for use with casing attachments
US6957704B2 (en) 2003-05-14 2005-10-25 Halliburton Energy Services Inc. Limit clamp for use with casing attachments
US20120227959A1 (en) * 2007-05-16 2012-09-13 Frank's International, Inc. Expandable centralizer for expandable pipe string
US7845061B2 (en) 2007-05-16 2010-12-07 Frank's International, Inc. Low clearance centralizer and method of making centralizer
WO2008144249A3 (en) * 2007-05-16 2009-01-15 Frank S Inr Inc Expandable centralizer for expandable pipe string
US8662166B2 (en) 2007-05-16 2014-03-04 Antelope Oil Tool & Mfg. Co., Llc Low clearance centralizer
US9771763B2 (en) 2007-05-16 2017-09-26 Antelope Oil Tool & Mfg. Co. Low-clearance centralizer
WO2008144249A2 (en) * 2007-05-16 2008-11-27 Frank's International, Inc. Expandable centralizer for expandable pipe string
US9759023B2 (en) 2007-05-16 2017-09-12 Antelope Oil Tool & Mfg. Co. Apparatus for securing a centralizer to a tubular
US8770280B2 (en) * 2007-05-16 2014-07-08 Antelope Oil Tool & Mfg. Co., Llc Expandable centralizer for expandable pipe string
US7878241B2 (en) 2007-05-16 2011-02-01 Frank's International, Inc. Expandable centralizer for expandable pipe string
EP2578796A3 (en) * 2007-05-16 2014-08-27 Frank's International, Inc. Expandable centralizer for expandable pipe string
US20110146971A1 (en) * 2007-05-16 2011-06-23 Frank's International, Inc. Low Clearance Centralizer and Method of Making Centralizer
US20080283253A1 (en) * 2007-05-16 2008-11-20 Frank's International, Inc. Expandable Centralizer For Expandable Pipe String
US8701783B2 (en) 2007-07-26 2014-04-22 Antelope Oil Tool & Mfg. Co., Llc Apparatus for and method of deploying a centralizer installed on an expandable casing string
US20090025929A1 (en) * 2007-07-26 2009-01-29 Frank's International, Inc. Apparatus for and Method of Deploying a Centralizer Installed on an Expandable Casing String
US20090308615A1 (en) * 2008-06-11 2009-12-17 Frank's International, Inc. Modular Low-Clearance Centralizer and Method of Making Modular Low-Clearance Centralizer
US20090307871A1 (en) * 2008-06-11 2009-12-17 Protorsion Hinge Co., Ltd. Hinge structure having a knuckle with anti-unfolding property
US8360161B2 (en) 2008-09-29 2013-01-29 Frank's International, Inc. Downhole device actuator and method
US20100078173A1 (en) * 2008-09-29 2010-04-01 Frank's International, Inc. Downhole device actuator and method
US20110042102A1 (en) * 2009-08-18 2011-02-24 Frank's International, Inc. Method of and kit for installing a centralizer on a pipe segment

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