WO2010127128A2 - Centreur à faible frottement - Google Patents

Centreur à faible frottement Download PDF

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Publication number
WO2010127128A2
WO2010127128A2 PCT/US2010/032987 US2010032987W WO2010127128A2 WO 2010127128 A2 WO2010127128 A2 WO 2010127128A2 US 2010032987 W US2010032987 W US 2010032987W WO 2010127128 A2 WO2010127128 A2 WO 2010127128A2
Authority
WO
WIPO (PCT)
Prior art keywords
centralizer
ball
tubular
balls
retainer plate
Prior art date
Application number
PCT/US2010/032987
Other languages
English (en)
Other versions
WO2010127128A3 (fr
Inventor
Robert H. Wittman
Gregory Keller
Original Assignee
Flotek Industries, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Flotek Industries, Inc. filed Critical Flotek Industries, Inc.
Priority to MX2011011364A priority Critical patent/MX2011011364A/es
Priority to CA2760670A priority patent/CA2760670A1/fr
Publication of WO2010127128A2 publication Critical patent/WO2010127128A2/fr
Publication of WO2010127128A3 publication Critical patent/WO2010127128A3/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK 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
    • E21B17/1057—Centralising devices with rollers or with a relatively rotating sleeve

Definitions

  • the disclosure relates to centralizers for downhole tubulars, such as casing strings. More particularly, the disclosure relates to a centralizer having roller balls that facilitate movement of the centralizer and a casing string coupled thereto relative to a surrounding formation or another casing string.
  • Centralizers are commonly used during completions operations in a wellbore, such as to cement a casing string within the wellbore.
  • a centralizer Prior to installation of the casing string within the wellbore, a centralizer is positioned within or about the casing string. The casing string with the centralizer coupled thereto is then lowered into the wellbore. As the casing string is lowered, the centralizer contacts the surrounding formation. Contact between the centralizer and formation impedes movement of the casing string and thus its installation. After the casing string is positioned within the wellbore, the centralizers maintain the casing string at the wellbore center, allowing cement to be uniformly distributed throughout an annulus formed by the casing string and surrounding formation.
  • the centralizer typically has structural features that facilitate relative movement • between the centralizer and formation. For instance, some conventional centralizers have raised vanes that enable sliding contact between the centralizer and formation over a limited area. Even so, slidingly engagement between the vanes and formation can generate significant friction loads. Other conventional centralizers have cylindrical rollers that rotatably engage the formation, resulting in comparatively lower frictional loads. However, movement of the centralizer is facilitated only in a single direction dependent upon the orientation of the rotational axis of the roller relative to the axial centerline of the centralizer. Movement of the centralizer in another direction causes the roller to slide against the formation, increasing frictional loads therebetween.
  • a centralizer for a downhole system including but not limited to a casing system, is disclosed.
  • the centralizer has a tubular body and a plurality of roller ball assemblies circumferentially spaced about the tubular body.
  • Each roller ball assembly includes a plurality of rotatable balls adapted to engage a surface radially offset from the centralizer and rotate relative to the surface in any direction.
  • the system includes a tubular positioned in a wellbore and a centralizer supported by the tubular.
  • the centralizer has a roller ball assembly with a plurality of balls engaging a surface radially offset from the centralizer and rotatable over the surface in any direction.
  • the system includes two concentric tubulars positioned in a wellbore, the two concentric tubulars comprising an inner tubular and an outer tubular, and a centralizer disposed therebetween.
  • the centralizer includes a plurality of balls engaging the tubulars and rotatable in any direction. Rotation of the balls enables relative movement of the tubulars.
  • FIG. 1 is schematic representation a low friction centralizer in accordance with the principles disclosed herein positioned in a casing string suspended in a wellbore;
  • FIG. 2 is a perspective view of the centralizer of FIG. 1 ;
  • FIGS. 3A and 3B are axial and radial cross-sectional views, respectively, of the tubular body of FIG. 2;
  • FIGS. 4A and 4B are axial cross-sectional and top views, respectively, of the retainer plate of FIG. 2;
  • FIG. 5 is schematic representation of another embodiment of a low friction centralizer in accordance with the principles disclosed herein disposed about a casing string suspended in a wellbore;
  • FIG. 6 is a perspective view of the centralizer of FIG. 5;
  • FIG. 7 is a perspective view of the tubular body of FIG. 6;
  • FIG. 8 is a perspective view of the centralizer of FIG. 6 in partial cross-section
  • FIGS. 9A and 9B are axial and radial cross-sectional views, respectively, of the ball socket block of FIG. 6;
  • FIGS. 1OA and 1OB are axial and radial cross-sectional views, respectively, of the retainer plate of FIG. 6;
  • FIG. 11 is schematic representation of yet another embodiment of a low friction centralizer in accordance with the principles disclosed herein rotatably disposed between two concentric casing strings;
  • FIG. 12 is a perspective view of the centralizer of FIG. 11 ;
  • FIG. 13 is a perspective view of the tubular body of FIG. 12;
  • FIG. 14 is a perspective view of the centralizer of FIG. 12 in partial cross-section
  • FIGS. 15A and 15B are axial and radial cross-sectional views, respectively, of the ball socket block of FIG. 12;
  • FIGS. 16A and 16B are axial and radial cross-sectional views, respectively, of the retainer plate of FIG. 12.
  • Couple or “couples” is intended to mean either an indirect or direct connection. Thus, if a first device couples to a second device, that connection may be through a direct connection, or through an indirect connection via other devices and connections.
  • axial and axially generally mean along or parallel to a central or longitudinal axis, while the terms “radial” and “radially” generally mean perpendicular to the central or longitudinal axis.
  • Casing system 100 further includes an outer casing 110 installed within a wellbore 115 and an inner casing 120 suspended therein. As illustrated, outer casing 110 is secured in position by cement 130 disposed in an annulus 135 between outer casing 110 and a formation 140 surrounding wellbore 115.
  • Inner casing 120 includes two casing pipe segments, or joints, 125 with centralizer 105 coupled therebetween.
  • Centralizer 105 maintains inner casing 120 in a central position within outer casing 110 and enables movement of inner casing 120 relative to outer casing string 110, as will be described.
  • Centralizer 105 includes a tubular body 155 having a first end 160, a second end 165, and a flowbore 170 extending therethrough. At first end 160, centralizer 105 has external threads 175 that enable centralizer 105 to be threaded into a joint 125 (FIG. 1) of inner casing 120. At second end 165, centralizer 105 has internal threads 180 (FIG. 3A) that enable another joint 125 (FIG. 1) to be threaded into centralizer 105. When centralizer 105 is coupled between joints 125, as shown in FIG. 1, flowbore 170 enables conveyance of cement through centralizer 105 during cementing operations.
  • Centralizer 105 further includes a plurality of raised vanes 185 disposed circumferentially about tubular body 155.
  • Each vane 185 has a length extending substantially in the longitudinal or axial direction and a height extending radially from the outer surface 190 of tubular body 155, thereby creating a valley 195 disposed between adjacent vanes 185.
  • FIGS. 3A and 3B depict axial and radial cross-sectional views, respectively, of tubular body 155, each vane 185 has a recess 200 therein. Recess 200 is bounded by radially extending surfaces 205 and an axially extending surface 210 therebetween. As best viewed in FIG.
  • centralizer 105 further includes a roller ball assembly 230 coupled within recess 200 of each raised vane 185.
  • Each roller ball assembly 230 includes a plurality of spherical balls 235, a plurality of fasteners 240, and a retainer plate 245.
  • Each ball 235 is disposed within a ball receptacle 215 (FIG. 3A) of vane 185. Further, ball 235 is rotatable within ball receptacle 215 relative to vane 185 and thus tubular body 155 of centralizer 105 in all directions.
  • Retainer plate 245 includes a plurality of fastener throughbores 250 and a plurality of ball receptacles 255.
  • Each fastener throughbore 250 is configured to receive a fastener 240 (FIG. 2) therethrough.
  • Each ball receptacles 255 is bounded by a surface 260 configured to receive a ball 235 (FIG. 2).
  • Surface 260 extends between a circular opening 265 in the inner surface 270 of retainer plate 245 and a circular opening 275 in the outer surface 280 of retainer plate 245. Opening 275 is defined by a diameter that is smaller than a diameter of each ball 235 (FIG. 2), whereas opening 265 is defined by a diameter that is at least that of the ball diameter.
  • a ball 235 is disposed within each ball receptacle 215 of vane 185.
  • Retainer plate 245 is then positioned over recess 200 of vane 185 such that ball receptacles 255 of retainer plate 245 align with and receive balls 235.
  • Fasteners 240 are inserted through fastener throughbores 250 of retainer plate 245 and secured within fastener bores 220 of vane 185.
  • a lubricant is injected within ball receptacles 215 of vanes 185 and/or ball receptacles 255 of retainer plate 245 prior to coupling of retainer plate 245 to vane 185 to promote rotation of balls 235 relative to vanes 185 and retainer plate 245 for extended periods of time.
  • retainer plate 245 When retainer plate 245 is coupled to vane 185, as described, balls 235 are retained by retainer plate 245 within recess 200 because openings 275 have diameters smaller than those of balls 235.
  • the height of recess 200 and the depths of ball receptacles 215, 255, each dimension measured in the radial direction, are selected such that a portion of each ball 235 extends radially through its respective opening 275 in retainer plate 245 and beyond outer surface 280 of retainer plate 245. As such, balls 235 engage outer casing 110 (FIG. 1).
  • centralizer 105 is coupled between joints 125 of inner casing 120, and thus is integral to inner casing 120.
  • the low friction centralizers are not integral to a casing but are instead "slipped on" and coupled to its exterior surface.
  • FIGS. 5-8 illustrate an embodiment of a low friction, slip-on centralizer.
  • FIG. 5 a schematic representation of a casing system 300, including a low friction centralizer 305 in accordance with the principles disclosed herein, is shown.
  • Casing system 300 further includes an outer casing 310 installed within a wellbore 315 and an inner casing 320 suspended therein.
  • Outer casing 310 is secured in position by cement 330 disposed in an annulus 335 between outer casing 310 and a formation 340 surrounding wellbore 315.
  • Inner casing 320 includes two casing pipe segments, or joints, 325 threaded end-to-end.
  • Centralizer 305 is installed about inner casing 320 to maintain inner casing 320 in a central position within outer casing 310 and to enable movement of inner casing 320 relative to outer casing string 310, as will be described.
  • Centralizer 305 includes a tubular body 325 and a plurality of roller ball assemblies 330 disposed circumferentially thereabout.
  • Tubular body 325 has a first end 335, a second end 340, a throughbore 345 extending therethrough, and a plurality of circumferentially spaced bores 355 proximal ends 335, 340.
  • Throughbore 345 enables centralizer 305 to be positioned about, or "slipped on,” inner casing 320, as illustrated in FIG. 5.
  • Each bore 355 is configured to receive a fastener 360 to enable coupling of centralizer 305 about inner casing 320.
  • Tubular body 325 further includes a plurality of circumferentially spaced cutouts 350, best viewed in FIG. 7. Each cutout 350 is configured to receive a roller ball assembly 330 therein, as will be described.
  • roller ball assembly 330 depicted in cross-section, is positioned within a cutout 350 of tubular body 325.
  • Roller ball assembly 330 includes a ball socket block 365, a retainer plate 370, and a plurality of spherical balls 375 and fasteners 380 extending therebetween.
  • Ball socket block 365 has an outer surface 385 with a plurality of ball receptacles 390 and fastener bores 395 disposed therein. Each fastener bore 395 is configured to receive a fastener 380 (FIG. 8) to enable coupling of retainer plate 370 thereto. Each ball receptacle 390 is defined by a spherical surface 400 configured to receive a ball 375 (FIG. 8). As such, ball socket block 365 effectively performs the same function as vanes 185 of centralizer 105, previously described.
  • FIGS. 1OA and 1OB are similar views of retainer plate 370.
  • retainer plate 370 includes a plurality of fastener throughbores 400 and a plurality of ball receptacles 405.
  • Each fastener throughbore 400 is configured to receive a fastener 380 (FIG. 8) therethrough.
  • Each ball receptacle 405 is bounded by a surface 410 extending between a circular opening 415 in the inner surface 420 of retainer plate 370 and a circular opening 425 in the outer surface 430 of retainer plate 370.
  • Opening 425 is defined by a diameter that is smaller than a diameter of each ball 375 (FIG. 8), whereas opening 415 is defined by a diameter that is at least that of the ball diameter.
  • ball socket block 365 is disposed within cutout 350 of tubular body 325, as shown in FIG. 8, and welded, or otherwise secured, to tubular body 325.
  • a ball 375 is disposed within each ball receptacle 390 of ball socket block 365.
  • Ball 375 is freely rotatable within ball receptacle 390 relative to ball socket block 365 in all directions.
  • Retainer plate 370 is then positioned over ball socket block 365 such that ball receptacles 405 in retainer plate 370 align with and receive balls 375.
  • fasteners 380 are inserted through fastener throughbores 400 of retainer plate 370 and secured within aligned fastener bores 395 in ball socket block 365.
  • a lubricant is injected within ball receptacles 390 of ball socket block 365 and/or ball receptacles 405 of retainer plate 370 prior to coupling of retainer plate 370 to ball socket block 365 to promote rotation of balls 375 relative to ball socket block 365 and retainer plate 370 for extended periods of time.
  • retainer plate 370 When retainer plate 370 is coupled to ball socket block 365, as described, balls 375 are retained therebetween because openings 425 of retainer plate 370 have diameters smaller than those of balls 375.
  • the depths of ball receptacles 390, 405, each dimension measured in the radial direction, are selected such a portion of each ball 375 extends radially through its respective opening 425 in retainer plate 370 and beyond outer surface 430 of retainer plate 370. As such, balls 375 engage outer casing 310 (FIG. 5).
  • FIGS. 11-16 illustrate an embodiment of a low friction, slip-on centralizer that permits such movement.
  • Casing system 600 further includes an outer casing 610 installed within a wellbore 615 and an inner casing 620 suspended therein.
  • Outer casing 610 is secured in position by cement 630 disposed in an annulus 635 between outer casing 610 and a formation 640 surrounding wellbore 615.
  • Inner casing 620 includes two casing pipe segments, or joints, 625 threaded end-to-end.
  • Centralizer 605 is installed about inner casing 620 to maintain inner casing 620 in a central position within outer casing 610. Further, centralizer 605 is moveable relative to outer casing 610 and to inner casing 620. To maintain the axial position of centralizer 605 relative to inner casing 620, casing system 600 further includes two locking collars 645 coupled to inner casing 620 above and below centralizer 605. Locking collars 645 do not move relative to inner casing 620 and thereby limit movement of centralizer 605 in the axial direction relative to inner casing 620.
  • Centralizer 605 includes a tubular body 610 and a plurality of roller ball assemblies 615 disposed circumferentially thereabout.
  • Tubular body 610 has a first end 620, a second end 625, and a throughbore 630 extending therethrough. Throughbore 630 enables centralizer 605 to be positioned about, or "slipped on,” inner casing 620, as illustrated in FIG. 11.
  • tubular body 610 is not fastened to inner casing 620, but rather is enabled by roller ball assemblies 615 to move relative to inner casing 620.
  • tubular body 610 does not include fastening means, such as fastener bores proximal ends 620, 625. Because centralizer 605 is moveable relative inner casing 620 but restricted by locking collars 645 (FIG. 11) from moving appreciably in the axial direction relative to inner casing 620, centralizer 605 may be referred to as a "rotatable, slip-on centralizer.”
  • Tubular body 610 further includes a plurality of circumferentially spaced cutouts 635, best viewed in FIG. 13. Each cutout 635 is configured to receive a roller ball assembly 615 therein, as will be described. [0049] Referring now to FIG.
  • roller ball assembly 615 depicted in cross-section, is positioned within a cutout 635 of tubular body 610.
  • Roller ball assembly 615 includes a ball socket block 640, a retainer plate 645, and a plurality of spherical balls 650 and fasteners 655 extending therebetween.
  • retainer plate 370 of centralizer 305 retainer plate 645 is disposed radially inward of ball socket block 640 and coupled thereto by fasteners 655 extending from the interior of centralizer 605.
  • inner casing 620 FIG. 11
  • Ball socket block 640 has an inner surface 660 with a plurality of ball receptacles 665 and fastener bores 670 disposed therein. Each fastener bore 670 is configured to receive a fastener 655 (FIG. 14) therein. Each ball receptacle 665 is defined by a spherical surface 675 configured to receive a ball 650 (FIG. 14). Surface 675 extends between a circular opening 680 in inner surface 660 and a circular opening 685 in the outer surface 690 of ball socket block 640.
  • FIGS. 16A and 16B are similar views of retainer plate 645.
  • retainer plate 645 includes a plurality of fastener throughbores 695 and a plurality of ball receptacles 700.
  • Each fastener throughbore 695 is configured to receive a fastener 655 (FIG. 8) therethrough.
  • Each ball receptacle 700 is defined by a spherical surface 705 configured to receive a ball 650 (FIG. 14).
  • Surface 705 extends between a circular opening 710 in the inner surface 715 of retainer plate 645 and a circular opening 720 in the outer surface 725 of retainer plate 645. Opening 710 is defined by a diameter that is smaller than a diameter of each ball 650 (FIG. 14), whereas opening 720 is defined by a diameter that is at least that of the ball diameter.
  • a ball 650 is disposed within each ball receptacle 665 of ball socket block 640.
  • Retainer plate 645 is then positioned over ball socket block 640 such that ball receptacles 700 of retainer plate 645 align with and receive balls 650.
  • Fasteners 655 are inserted through fastener throughbores 695 of retainer plate 645 and secured within aligned fastener bores 670 in ball socket block 640.
  • a lubricant is injected within ball receptacles 665 and/or ball receptacles 700 prior to coupling of retainer plate 645 to ball socket block 640 to promote rotation of balls 650 relative to ball socket block 640 and retainer plate 645 for extended periods of time.
  • roller ball assembly 615 is disposed within cutout 635 of tubular body 610, as shown in FIG. 14, and secured in position, such as by welding ball socket block 640 to tubular body 610.
  • balls 650 are retained therebetween because openings 710 of retainer plate 640 and openings 685 of ball socket block 640 have diameters smaller than those of balls 650.
  • balls 665 are freely rotatable within ball receptacles 665, 700 relative to ball socket block 640 and retainer plate 645 in all directions.
  • the thickness of ball socket block 640 between surfaces 660, 690 and the thickness of retainer plate 640 between surfaces 715, 725 are selected such that a portion of each ball 650 extends radially through ball receptacle 700 in retainer plate 645 and beyond inner surface 715 of retainer plate 645.
  • each ball 650 extends radially through ball receptacle 665 in ball socket block 640 and beyond outer surface 690 of ball socket block 640. As such, balls 650 engage inner casing 620 and outer casing 610 (FIG. 11).
  • balls 650 facilitate low friction movement of centralizer 605 relative to inner casing 620 in any direction. This may be particularly useful in other embodiments wherein outer casing 610 is not fixed, but is moveable like inner casing 620. hi the illustrated embodiment, however, locking collars 645 (FIG. 11) limit axial movement of centralizer 605 relative to inner casing 620.
  • centralizer 305 has a tubular body 325 with a plurality of cutouts 350, each cutout 350 receiving a ball socket block 365, which is coupled to tubular body 325, such as by welding.
  • centralizer 605 has a tubular body 610 with a plurality of cutouts 635, each cutout 635 receiving a ball socket block 640, which is coupled to tubular body 610, such as by welding.
  • tubular body 325, 610 and ball socket block 365, 640 may be formed integrally as a single component, rather than as separate components subsequently joined in some manner.
  • tubular body 325 and ball socket block 365 may be formed as a single component through casting or forging.
  • balls 375 would then be seated in ball receptacles 390 of the integral tubular body and ball socket block and retainer plate 370 coupled thereto.
  • tubular body 610 and ball socket block 640 may be formed as a single component through casting or forging.
  • balls 650 would then be seated in ball receptacles 665 of the integral tubular body and ball socket block and retainer plate 645 coupled thereto.
  • a centralizer in accordance with the principles disclosed herein, including the embodiments described above, enables low friction movement of the centralizer relative to a downhole tubular, such as a casing string, or a surrounding formation. Movement of the centralizer relative to the casing string, or surrounding formation, is facilitated by a plurality of balls which engage the casing string, or formation, and rotate freely in any direction. Thus, the centralizer is moveable in any direction relative to the casing string or formation.
  • the friction forces associated with such movement are no greater in one direction than any other, in contrast to many conventional centralizers. Moreover, the friction forces are significantly less than those associated with many conventional centralizers, in particular those which enable sliding engagement, as previously described.
  • centralizers 105, 305, 605 are depicted and described as facilitating movement of an inner casing 120, 320, 620 within a fixed outer casing 110, 310, 610, respectively.
  • Centralizers 105, 305, 605 would function identically as described were they to instead engage a surrounding formation 140, 340, 640 in the absence of outer casing 110, 310, 610.
  • the embodiments of the low friction centralizers disclosed herein are described in the context of being integral with or coupled to a casing string for the purpose of centralizing the casing string and facilitating movement of the casing string relative to another casing string.
  • the low friction centralizers are equally applicable to other types of tubulars or tubular strings, such as but not limited to drill strings, which require centralization and/or movement relative to a formation or another tubular string. Accordingly, the scope of protection is not limited by the description set out above, but is only limited by the claims which follow, that scope including all equivalents of the subject matter of the claims.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Supports For Pipes And Cables (AREA)

Abstract

L'invention porte sur un centreur pour un système de fond de trou tel que, mais sans y être limité, un système de tubage. Dans certains modes de réalisation, le centreur présente un corps tubulaire et une pluralité d'ensembles de boules roulantes espacées de manière circonférentielle autour du corps tubulaire. Chaque ensemble de boules roulantes comprend une pluralité de boules rotatives aptes à venir en contact avec une surface radialement décalée du centreur et à tourner dans n'importe quelle direction par rapport à la surface.
PCT/US2010/032987 2009-05-01 2010-04-29 Centreur à faible frottement WO2010127128A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
MX2011011364A MX2011011364A (es) 2009-05-01 2010-04-29 Un centralizador de baja friccion.
CA2760670A CA2760670A1 (fr) 2009-05-01 2010-04-29 Centreur a faible frottement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US17461709P 2009-05-01 2009-05-01
US61/174,617 2009-05-01

Publications (2)

Publication Number Publication Date
WO2010127128A2 true WO2010127128A2 (fr) 2010-11-04
WO2010127128A3 WO2010127128A3 (fr) 2011-03-03

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PCT/US2010/032987 WO2010127128A2 (fr) 2009-05-01 2010-04-29 Centreur à faible frottement

Country Status (4)

Country Link
US (1) US20100276138A1 (fr)
CA (1) CA2760670A1 (fr)
MX (1) MX2011011364A (fr)
WO (1) WO2010127128A2 (fr)

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EA034114B1 (ru) * 2018-02-15 2019-12-27 Общество С Ограниченной Ответственностью "Научная Компания "Луч" Устройство для перемещения оборудования в эксплуатационной колонне

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US8082987B2 (en) * 2009-07-01 2011-12-27 Smith International, Inc. Hydraulically locking stabilizer
WO2014018040A1 (fr) * 2012-07-26 2014-01-30 Halliburton Energy Services, Inc. Appareil, systèmes et procédés de maintien d'axe
US20140311756A1 (en) 2013-04-22 2014-10-23 Rock Dicke Incorporated Pipe Centralizer Having Low-Friction Coating
CA2919202C (fr) 2013-07-24 2021-04-13 Impact Selector International, Llc Element d'espacement de rouleaux de cable metallique
WO2015088559A1 (fr) * 2013-12-13 2015-06-18 Halliburton Energy Services, Inc. Outils de forage de fond de trou incluant des patins d'écartement à faible frottement munis de billes rotatives positionnées à l'intérieur de ceux-ci
US10287829B2 (en) 2014-12-22 2019-05-14 Colorado School Of Mines Method and apparatus to rotate subsurface wellbore casing
US10364619B2 (en) 2016-05-20 2019-07-30 Alaskan Energy Resources, Inc. Integral electrically isolated centralizer and swell packer system
US10053925B1 (en) * 2016-05-20 2018-08-21 Alaskan Energy Resources, Inc. Centralizer system
US10920502B2 (en) 2018-02-05 2021-02-16 Saudi Arabian Oil Company Casing friction reduction methods and tool
US11448016B2 (en) 2018-02-05 2022-09-20 Saudi Arabian Oil Company Casing friction reduction methods and tool
CA3110488A1 (fr) * 2018-08-29 2020-03-05 Impact Selector International, Llc Appareil et procede pour effectuer des operations de tubage dans un puits de forage
CN109025848A (zh) * 2018-10-12 2018-12-18 中煤地质集团有限公司北京分公司 一种开孔扶正器
US10895117B2 (en) 2018-12-28 2021-01-19 Saudi Arabian Oil Company Systems and methods for improved centralization and friction reduction using casing rods
WO2022155383A1 (fr) * 2021-01-14 2022-07-21 Saudi Arabian Oil Company Procédés et outil de réduction de frottement de colonne de tubage

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US20030159834A1 (en) * 2000-06-20 2003-08-28 Kirk Ian Alastair Centralizer

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US5778976A (en) * 1994-02-14 1998-07-14 Austoil Technology Limited Casing installation equipment
US20020020526A1 (en) * 2000-05-31 2002-02-21 Male Alan Leslie Friction reduction means
US20030159834A1 (en) * 2000-06-20 2003-08-28 Kirk Ian Alastair Centralizer

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Publication number Priority date Publication date Assignee Title
EA034114B1 (ru) * 2018-02-15 2019-12-27 Общество С Ограниченной Ответственностью "Научная Компания "Луч" Устройство для перемещения оборудования в эксплуатационной колонне

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WO2010127128A3 (fr) 2011-03-03
CA2760670A1 (fr) 2010-11-04
US20100276138A1 (en) 2010-11-04
MX2011011364A (es) 2012-02-08

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