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WO2015023925A1 - Anneau de verrouillage avec évidements coniques - Google Patents

Anneau de verrouillage avec évidements coniques Download PDF

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Publication number
WO2015023925A1
WO2015023925A1 PCT/US2014/051225 US2014051225W WO2015023925A1 WO 2015023925 A1 WO2015023925 A1 WO 2015023925A1 US 2014051225 W US2014051225 W US 2014051225W WO 2015023925 A1 WO2015023925 A1 WO 2015023925A1
Authority
WO
WIPO (PCT)
Prior art keywords
axial
locking ring
component
recess
downhole tool
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/US2014/051225
Other languages
English (en)
Inventor
Hans Seehuus
Are Funderud
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Smith International Inc
Original Assignee
Smith International 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 Smith International Inc filed Critical Smith International Inc
Publication of WO2015023925A1 publication Critical patent/WO2015023925A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/042—Threaded
    • E21B17/043—Threaded with locking means
    • 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
    • E21B10/00—Drill bits
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
    • F16B2200/69—Redundant disconnection blocking means
    • F16B2200/73—Cam locks or thread locks

Definitions

  • two components that have a similar composition may be connected by the fusing or addition of material.
  • two components made of steel may be connected to one another through welding and/or brazing.
  • the two components may be positioned near or adjacent one another and heated metal or additional steel may be applied to an interface between the two components to bind the two components together.
  • the application additional material may result in a poor connection between components made of or including dissimilar compositions.
  • connection pin may be used to couple a bit to a drill string.
  • the connection pin has threads formed on the outer surface thereof, and the bit has corresponding threads formed on the inner surface thereof.
  • the threaded engagement by itself, may not be sufficient to hold the connection pin and the bit together downhole due to high loads and/or vibration while drilling. Further, it may be difficult to weld the connection pin and the bit together to fortify the engagement if they are made from different materials with different melting points.
  • the connection pin may be made of steel, and the bit may be made of tungsten carbide matrix.
  • a steel locking ring may be positioned between the connection pin and the bit.
  • One axial surface of the locking ring is welded to the connection pin.
  • the other axial surface of the locking ring has several circumferentially-offset pockets or recesses that are adapted to receive corresponding circumferentially-offset axial protrusions or "castellations" formed on an axial surface of the drill bit.
  • the pockets interlock with the castellations to fortify the engagement between the locking ring and the bit.
  • a locking ring includes a body.
  • the body may have first and second opposing axial surfaces and a bore formed axially therethrough.
  • a recess may be formed into the second axial surface.
  • the recess may at least partially be defined first and second opposing circumferentially offset surfaces. At least a portion of the first circumferentially offset surface may be oriented at an angle between 20° and 85° with respect to a plane that is perpendicular to a longitudinal centerline through the body.
  • the downhole tool includes first and second components that are made of different materials.
  • the first component may have a first engagement feature formed on an outer surface thereof.
  • the second component may have a second engagement feature formed on an inner surface thereof.
  • the second component may include an axial protrusion extending therefrom.
  • a locking ring may be positioned between the first and second components.
  • the locking ring may include an annular body having first and second opposing axial surfaces and a bore formed axially therethrough. A recess may be formed into the second axial surface for receiving the axial protrusion.
  • the recess may at least partially be defined by an outer radial surface, first and second opposing circumferentially offset surfaces, and an inner axial surface disposed between the first and second axial surfaces. At least a portion of the first circumferentially offset surface may be oriented at an angle between 20° and 85° with respect to a plane that is perpendicular to a longitudinal centerline through the body.
  • a downhole tool may include a non-weldable component.
  • the non-weldable component may have an axial protrusion and/or a locking ring.
  • the locking ring may include an annular body having first and second opposing axial surfaces.
  • An axial recess may be formed into the second axial surface.
  • the axial recess may be configured to receive the axial protrusion.
  • the axial recess may at least be partially defined by an outer radial surface and opposing first and second circumferentially offset surfaces. At least a portion of the first and second circumferentially offset surfaces may be oriented at an angle between 30° and 45° with respect to a plane that is perpendicular to a longitudinal centerline through the body.
  • An inner axial surface may be disposed between the first and second axial surfaces.
  • An embodiment of a method of assembling a downhole tool may include inserting a shaft of a first component through a bore formed axially through a locking ring.
  • the locking ring may include an annular body having first and second opposing axial surfaces.
  • An axial protrusion extending from a second component may be aligned in a recess formed in the second axial surface of the locking ring.
  • Threads formed on an outer surface of the shaft may be engaged with threads formed on an inner surface of the second component. The engagement of the threads may apply a force to a circumferentially offset surface of the axial recess to compress the circumferentially offset surface.
  • FIG. 1 illustrates a perspective view of an embodiment of a downhole tool utilizing a locking ring, according to the present disclosure
  • FIG. 2 illustrates an exploded perspective view of the embodiment of a downhole tool utilizing a locking ring depicted in FIG. 1 ;
  • FIG. 3 illustrates another exploded perspective view of the embodiment of a downhole tool utilizing a locking ring depicted in FIG. 1;
  • FIG. 4 illustrates a cross-sectional view of an embodiment of a downhole tool, according to the present disclosure
  • FIG. 5 illustrates an enlarged cross-sectional view of an embodiment of a downhole tool to illustrate an axial protrusion of the second component disposed within a recess in the locking ring, according to the present disclosure
  • FIG. 6 illustrates an enlarged cross-sectional view of an embodiment of a downhole tool having an inner radial surface of a locking ring, according to the present disclosure
  • FIG. 7 illustrates a perspective view of an embodiment of a downhole tool showing a locking ring removed (for clarity), according to the present disclosure
  • FIG. 8 illustrates a cross-sectional perspective view of the embodiment of a downhole tool shown in FIG. 7;
  • FIG. 9 illustrates an enlarged cross-sectional view of an embodiment of an axial protrusion of a second component disposed within a recess in the locking ring, according to the present disclosure
  • FIG. 10 illustrates a perspective view of an embodiment of a locking ring, according to the present disclosure
  • FIG. 11 illustrates a top view of a second axial surface of an embodiment of a locking ring, according to the present disclosure.
  • FIG. 12 illustrates an embodiment of a method of assembly for a downhole tool according to the present disclosure.
  • FIG. 1 illustrates a perspective view of an embodiment of a downhole tool 100 utilizing a locking ring 200 and FIGS. 2 and 3 show exploded perspective views of the downhole tool 100.
  • the downhole tool 100 may include a first component 110, a second component 130, and a locking ring 200 disposed therebetween.
  • the first and second components 110, 130 may be made of or include the same or different materials.
  • the components 110, 130 may be made of or include one or more metals or metal alloys.
  • suitable metals may include steel, including carbon steel (e.g., AISI 10XX, AISI 11XX, AISI 12XX, or AISI 15XX), manganese steel (e.g., AISI 13XX), nickel steel (e.g., AISI 23XX, or AISI 25XX), nickel- chromium steel (e.g., AISI 31XX, AISI 32XX, AISI 33XX, or AISI 34XX), molybdenum steel (e.g., AISI 40XX, or AISI 44XX), chromium-molybdenum steel (e.g., AISI 41XX), nickel-chromium-molybdenum steel (e.g., AISI 43X
  • the first component 110 and/or the second component 130 may also be made of or include one or more composite metal alloys and/or metal alloy matrices.
  • the first component 110 and/or the second component 130 may be or include a carbide, such as tungsten carbide, titanium carbide, calcium carbide, silicon carbide, aluminum carbide, chromium carbide, molybdenum carbide, combinations thereof, and the like.
  • the first component 110 may be made of a weldable material, and the second component 130 may be made of a non-weldable material.
  • the first component 110 may be made of steel (e.g., AISI 4340 steel), and the second component 130 may be made of a tungsten carbide matrix material.
  • the first component 110 is shown as a connection pin that may be configured to couple to a drill string (not shown). It may be appreciated, however, that although the first component 110 is shown as a connection pin, other components are also contemplated.
  • the first component 110 may be or include a drill pipe, a drill string, a coiled tubing, a wireline, a drill collar, a stabilizer sleeve, an internal in a larger tool, similar downhole tool components, or combinations thereof.
  • a locking ring 200 may be configured to mechanically rotationally lock to the second component 130 and to connect to the first component 110 with a weld 170, or braze, or other fixation material. In some embodiments, the weld 170 may not be necessary.
  • the locking ring 200 may have a body 211 sized to have similar dimensions to dimensions of the first component and/or second component. For example, an outer diameter of the body 211 may be substantially similar to an outer diameter of the first component 110. In another example, the body 211 may be an annular body.
  • FIG. 2 illustrates an exploded perspective view of the embodiment of a downhole tool 100 of FIG. 1.
  • the downhole tool 100 may include a first component 110 connected to a locking ring 200 with, for example, a weld 170.
  • the locking ring 200 may be mechanically rotationally locked to a second component 130.
  • the first component 110 may include a head 114 having a shaft 116 extending therefrom.
  • the shaft 116 may include threads 120 about a circumference.
  • the head 114 has a greater cross- sectional length (e.g., diameter) than the shaft 116.
  • a bore 112 may extend through the head 114 and/or the shaft 116.
  • the diameter of the bore 112 may vary along the length of the first component 110.
  • the inner surface of the head 114 that defines the bore 112 may include a plurality of threads formed thereon for connecting to another component, such as a drill string or other downhole tool.
  • the head 114 may have one or more grooves (two are shown 118-1, 118-2) formed in the outer surface thereof. At least one groove 118-1, 118-2 may be formed around a portion of the circumference of the head 114. In another embodiment, a single groove may be formed around the entire circumference of the head 114. The (radial) depth of the grooves 118-1, 118-2 may vary along the circumference of the head 114. In some embodiments, the grooves 118-1, 118-2 may facilitate mating of the downhole tool 100 to a drill string, other downhole tool, or other tubular.
  • the second component 130 is shown as a drill bit (e.g., a polycrystalline diamond compact drill bit) that may be used to drill a wellbore into a subterranean formation. It may be appreciated, however, that although the second component 130 is shown as a drill bit, other components are also contemplated.
  • the second component 130 may be or include other types of bits, such as a roller-cone bit; an underreamer; a stabilizer (e.g., a stabilizer sleeve); a logging-while-drilling ("LWD”) tool; a measuring-while-drilling ("MWD”) tool; a concentric hole opener; a housing on a motor; or the like.
  • the second component 130 may have a bore 133 formed at least partially (or completely) therethrough.
  • the inner surface adjacent the bore 133 of the second component 130 has a plurality of threads 134 formed thereon that are adapted to engage corresponding threads 120 formed on the outer surface of the shaft 116 of the first component 110.
  • the threaded shaft 116 may provide an axial preload or tension in the connection with the second component 130.
  • configurations other than threads may be used on the shaft 116 and/or inner surface adjacent the bore 133 of the second component 130 to, for instance, provide a similar preload.
  • a quick lock configuration may be used.
  • the second component 130 may have one or more radial protrusions (e.g., blades and/or gage pads) 136 formed on the outer (radial) surface thereof. Although 5 radial protrusions 136 are shown, it may be appreciated that the number of radial protrusions 136 may be within a range having lower and upper values of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, or more.
  • the radial protrusions 136 may be circumferentially-offset from one another and extend radially-outward from the outer (radial) surface of the second component 130. For example, each of the radial protrusions 136, as shown, is circumferentially offset from an adjacent radial protrusion 136 by 72 degrees. In another example, the radial protrusions 136 may not all be equally spaced.
  • the second component 130 may also have one or more axial protrusions or "castellations" 140 formed on an outer (axial) surface thereof. Although 10 axial protrusions 140 are shown, it may be appreciated that the number of axial protrusions 140 may be within a range having lower and upper values of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, or more.
  • the number of axial protrusions 140 may be correlated with the number of radial protrusions 136.
  • the number of axial protrusions 140 as shown are twice as many as the number of radial protrusions (e.g. ten axial protrusions 140 to five radial protrusions 136).
  • the number of axial protrusions 140 may not be correlated with the number of radial protrusions 136.
  • the axial protrusions 140 may be positioned in a variety of patterns on the second component 130. As shown, the axial protrusions 140 are circumferentially-offset from one another and extend axially-outward from the outer axial surface 115 of the second component 130. In at least one embodiment, if an even number of axial protrusions 140 are employed, each axial protrusion 140 can be directly across from another corresponding axial protrusion 140. In some embodiments, the axial protrusions 140 may be distributed equally about the circumference of the axial surface of the second component 130. In other embodiments, the axial protrusions 140 may be distributed at non-equal intervals about the circumference of the axial surface of the second component 130.
  • the axial protrusions 140 may axially extend equidistantly from the outer axial surface 115 of the second component 130. In other embodiments, the axial protrusions 140 may axially extend in non-uniform distances from the outer axial surface 115 of the second component 130.
  • the locking ring 200 may be disposed between the first and second components 110, 130. In at least one embodiment, the locking ring 200 may be or serve as a stabilizer.
  • the locking ring 200 may have a body 211 that may be annular.
  • the body 211 may have a cross-sectional dimension (e.g. a diameter) within a range having lower and upper values of 50 mm, 60 mm, 75 mm, 100 mm, 150 mm, 200 mm, 300 mm, 400 mm, 500 mm, 600 mm, more than 600 mm, or any value therebetween.
  • the diameter of the body 211 may be between 60 mm and 600 mm, between 60 mm and 200 mm, between 60 mm and 150 mm, or between 60 mm and 100 mm.
  • the body 211 may have an axial bore 212 formed therethrough.
  • the bore 212 may be arranged and designed to have the shaft 116 of the first component 110 extend therethrough.
  • the bore 212 may have a cross-sectional dimension (e.g. diameter) within a range having lower and upper values of 40 mm, 50 mm, 60 mm, 70 mm, 80 mm, 90 mm, 100 mm, 150 mm, 200 mm, 300 mm, 400 mm, more than 400 mm, or any value therebetween.
  • the diameter of the bore 212 may be between 40 mm and 400 mm, between 40 mm and 150 mm, or between 40 mm and 100 mm.
  • the locking ring 200 may be made of the same material as the first component 110 and/or the second component 130, or the locking ring 200 may include a different material.
  • the locking ring 200 may include steel or another weldable material.
  • the locking ring 200 may be made from a nickel- chromium-molybdenum alloy steel such as AISI 43XX steel (e.g., 4340 steel).
  • a first axial surface 221 of the locking ring 200 may be substantially planar, flat, smooth, or combinations thereof.
  • the first axial surface 221 may be positioned adjacent to and abut an axial surface of the first component 110 (e.g., the steel connection pin) when the downhole tool 100 is assembled, as shown in FIG. 1.
  • a second, opposing axial surface 231 of the locking ring 200 may have one or more indentations or axial recesses 232 formed into the annular body 211, as shown in FIG. 3. At least one axial recess 232 may be arranged and designed to receive a corresponding axial protrusion 140 of the second component 130 therein.
  • each axial recess 232 is arranged and designed to receive its corresponding axial protrusion 140.
  • the axial recesses 232 may be circumferentially-offset from one another around the second axial surface 231 of the locking ring 200.
  • the second axial surface 231 of the locking ring 200 may have the one or more axial protrusions extending therefrom, and the outer axial surface 115 of the second component 130 may have one or more corresponding indentations or recesses formed therein.
  • the configuration of the axial protrusions and the recesses may be reversed and/or the second axial surface 231 of the locking ring and the outer axial surface 115 of the second component 130 may each have both axial protrusions and axial recesses.
  • 10 axial recesses 232 are shown, it may be appreciated that the number of axial recesses 232 may be within a range having lower and upper values of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, or more depending, for example, at least in part, on the number of axial protrusions 140 on the second component 130.
  • the second axial surface 231 of the locking ring 200 may be placed in contact with the outer axial surface 115 of the second component 130. More particularly, the axial protrusions 140 (whether on the outer axial surface 115 of the second component 130, on the second axial surface 231 of the locking ring 200, or both) are aligned with and inserted into the corresponding axial recesses 232 (whether in the second axial surface 231 of the locking ring 200, on the outer axial surface 115 of the second component 130, or both). The contact between the angled surfaces of the axial protrusions 140 and the angled surfaces of the axial recesses 232 may prevent or limit circumferential movement between the locking ring 200 and the second component 130 as will be described in more detail in FIGS 5 through 8.
  • the locking ring 200 and the first component 110 may be welded, brazed, or otherwise affixed together.
  • the locking ring 200 and the first component 110 may be welded together via electronic welding with CASTOLIN® 6868 HD weld material. It may be appreciated that the order of assembly described above is merely illustrative, and the first component, the second component 130, and the locking ring 200 may be assembled in a different order.
  • FIG. 4 illustrates a cross-sectional view of an embodiment of a downhole tool 300, according to the present disclosure.
  • the first component 310 and the locking ring 400 may be welded, brazed, or otherwise affixed together to provide a more secure connection between the first component 310 and locking ring 400.
  • the first component 310 and the locking ring 400 may be welded together via electronic welding with CASTOLIN® 6868 HD weld material.
  • the weld 370 may form an annular ring around the first component 310 and the locking ring 400 to secure them together.
  • the weld 370 that assists in securing the locking ring 400 to the first component 310 also, in effect, secures the second component 330 to the first component 310 as the locking ring 400 and second component 330 are mechanically rotationally locked relative to one another.
  • the mechanical lock between the locking ring 400 and second component 330 may be released by moving the locking ring 400 axially relative to the second component 330.
  • the locking ring 400 may be moved axially relative to the second component 330 by rotating the first component 310 relative to the second component 330 on the second engagement features 320 (e.g. threads) on the outer surface of the shaft 316 that engage (e.g. threadably) with the second engagement feature 334 (e.g.
  • connection e.g. weld 370 limits or prevents the rotation of the first component 310 relative to the second component 330 and, hence, the locking ring 400.
  • FIG. 5 illustrates an enlarged cross-sectional view of an embodiment of a downhole tool to illustrate an axial protrusion 340 of a second component 330 disposed within an axial recess 432 in a locking ring 400.
  • the outer radial surface 344 of each axial protrusion 140 may be oriented at an angle a with respect to a plane 362 that is perpendicular to the longitudinal axis or centerline 360 (an example of which is shown in FIG. 4) through the second component 330 and/or the locking ring 400.
  • the angle a may be within a range having lower and upper values of 20°, 30°, 40°, 60°, 70°, 80°, 85°, 89°, more than 89°, or any value therebetween.
  • the angle a may be between 30° and 60°, between 40° and 70°, between 50° and 80°, or between 30° and 85°. More particularly, the angle a may be between 20° and 80°, between 25° and 60°, between 30° and 50°, between 30° and 45°, or between 30° and 40°.
  • the angle a may have a single value within the aforementioned ranges.
  • the angle a may be 20°, 30°, 40°, 60°, 70°, or 80°. In at least one example, the angle a may be 45°. In at least another example, the angle a may be 30°.
  • the axial recesses 432 may be tapered to receive the axial protrusions 340. More particularly, the outer radial surface 444 defining each axial recess 432 may be arranged and designed to mate with the outer radial surface 344 of the corresponding axial protrusion 340. As such, the outer radial surface 444 of each axial recess 432 may be oriented at an angle ⁇ with respect to the plane 362 that is perpendicular to the longitudinal centerline 360 through the locking ring 400 and/or the second component 330.
  • the angle ⁇ may be within a range having lower and upper values of 20°, 30°, 40°, 50°, 60°, 70°, 80°, 85°, 89°, or more than 89°, or any value therebetween.
  • the angle ⁇ may be between 30° and 60°, between 40° and 70°, between 50° and 80°, or between 30° and 85°.
  • the angle ⁇ may be between 20° and 80°, between 25° and 60°, between 30° and 50°, between 30° and 45°, or between 30° and 40°.
  • the angle ⁇ may have a single value within the aforementioned ranges.
  • the angle ⁇ may be 20°, 30°, 40°, 60°, 70°, or 80°.
  • each axial protrusion 340 may be substantially parallel to the plane 362 that is perpendicular to the longitudinal centerline 360 (an example of which is shown in FIG. 4) through the second component 330.
  • substantially parallel means within 10° of parallel
  • substantially perpendicular means within 10° of perpendicular.
  • the outer axial surface 350 and inner axial surface 450 may abut one another or may be spaced apart from one another.
  • a space between the outer axial surface 350 and inner axial surface 450 may allow for compression of the material surrounding the axial protrusion 340 and/or the axial recess 432. Compression of the material surrounding the axial protrusion 340 and/or the axial recess 432 may provide tighter seal between the axial protrusion 340 and the axial recess 432 in the event of slight differences in sizing. Compression of the material surrounding the axial protrusion 340 and/or the axial recess 432 may provide an axial preload upon the first and second engagement features (examples of which are labeled as 320, 334 in FIG. 4) of the downhole tool 300.
  • a tip portion 352 may be formed on each outer axial surface 350 and extend axially therefrom.
  • a tip recess 453 may be formed on each inner axial surface 450.
  • the tip recess 453 may be configured to accommodate the tip portion 352.
  • the tip portion 352 may include a cylindrical base portion 354 and a conical or frustoconical portion 356.
  • the tip portion 352 may be or include remains from the material used to make the second component 330 (or first component). For example, the tip portion 352 may be remaining material from a casting process.
  • the tip recess 453 may be shaped to compliment the tip portion 352.
  • the tip recess 453 may include a cylindrical base portion 455 and a conical and/or frustoconical portion 457.
  • the tip portion 352 may be omitted, and the outer axial surface 350 of each axial protrusion 340 may be substantially flat, such as shown in FIG. 6.
  • the tip recess 453 may be omitted.
  • the tip portion 352 may be ground down such that it is substantially parallel with or within the same plane as (e.g. removed from) the outer axial surface 350.
  • An outer radial surface 344 may be a planar surface oriented at the angle a with respect to the plane 362, as depicted in FIG. 5.
  • an outer radial surface 544 may be a curved or otherwise non-planar surface that includes at least a portion of the outer radial surface 544 oriented at an angle a with respect to a plane 562.
  • a tangent line (not shown) through the outer radial surface 544 may be oriented at an angle a.
  • the outer radial surface 544 may be a curved surface that includes a portion having a tangent line (not shown) through the outer radial surface 544 at an angle a with the plane 562.
  • the outer radial surface 544 may include a portion of the outer radial surface 544, whether planar or curved, that is oriented at an angle a and another portion, whether planar or curved, that is angled at a second angle that may be greater than or less than the angle a.
  • a first portion of the outer radial surface 544 may be planar and have an angle a or may be curved such that a tangent line (not shown) through the outer radial surface 544 is angled at an angle a and a second portion of the outer radial surface 544 may be planar and have a second angle or may be curved such that a tangent line (not shown) through the outer radial surface 544 is angled at a second angle.
  • the outer radial surface 544 may include more or fewer portions that are oriented at varying angles and/or the same angles (whether all portions include planar surfaces and/or or a tangent lines of curved surfaces) with respect to each other.
  • the outer radial surface 644 of the axial recess 640 may be configured to mate complimentarily with substantially all of the outer radial surface 544 of the axial protrusion 540.
  • the outer radial surface 644 of the axial recess 640 may be configured such that a portion of the outer radial surface 644 mates complimentarily with the outer radial surface 544 of the axial protrusion 540.
  • the outer radial surface 544 depicted in FIG. 6 includes a portion at an angle a that mates complimentarily with the outer radial surface 644 of the axial recess 640.
  • Other portions of the outer radial surface 544 of the axial protrusion 540 may not complimentarily mate with the outer radial surface 644.
  • FIG. 6 depicts an embodiment of downhole tool 500 including a locking ring 600 that may have one or more axial recesses 632 partially defined by an inner radial surface 642.
  • the inner radial surface 642 defining each recess 632 is arranged and designed to mate with an inner radial surface 542 of a corresponding axial protrusion 540 on a second component 530.
  • the inner radial surface 642 defining each recess 632 may be generally perpendicular to plane 562 through the locking ring 600 and/or the second component 530.
  • the inner radial surface 642 defining each recess 632 may be oriented at an angle ⁇ with respect to the plane 562 that is perpendicular to the longitudinal centerline through the locking ring 600 and/or the second component 530.
  • the angle ⁇ may be within a range having lower and upper values of 20°, 30°, 40°, 50°, 60°, 70°, 80°, 85°, 89°, more than 89°, or any value therebetween.
  • the angle ⁇ may be between 20° and 70°.
  • the angle ⁇ may be between 30° and 50°.
  • a downhole tool 700 may include a first component 710 and a second component 730.
  • the first component 710 and second component 730 may be held relative to one another by a locking ring with axial recesses connected to the first component 710 with a weld 770. While visible in FIG. 8, the locking ring 800 is not depicted in FIG. 7 in order to show axial protrusions 740 and axial surfaces 750 thereof.
  • the axial protrusions 740 on the second component 730 each may include opposing inner and outer radial surfaces 742, 744, opposing circumferentially offset surfaces 746, 748, and an outer axial surface 750.
  • the radial length of each axial protrusion 140 may be greater than, less than, or equal to the circumferential length of the axial protrusion 140.
  • the axial protrusions 740 of the second component 730 may include interfaces 758 between the outer radial surface 744 and the opposing circumferentially offset surfaces 746, 748 of the axial protrusions 740 may be sharp (e.g., about 90°) or curved.
  • the interfaces 758 may have a radius of curvature between the outer radial surface 744 and the opposing circumferentially offset surfaces 746, 748 within a range having lower and upper values of 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 12 mm, 15 mm, 20 mm, 25 mm, 30 mm, more than 30 mm, or any value therebetween.
  • the radius of curvature may be between 1 mm and 5 mm, between 3 mm and 7 mm, between 5 mm and 10 mm, between 8 mm and 12 mm, between 10 mm and 15 mm, or between 15 mm and 25 mm.
  • FIG. 8 depicts a tangential cross-sectional perspective view of the downhole tool 700 including a first component 710 that may be connected to a locking ring 800 ring by a weld 770.
  • the locking ring 800 may be mechanically rotationally locked to a second component 730.
  • An axial protrusion 740 may be received by an axial recess 832 in the locking ring 800.
  • FIG. 9 illustrates an enlarged view of a cross-sectional view similar to that in FIG. 8 to illustrate an embodiment of an axial protrusion (e.g. of the second component) disposed within a recess (e.g. in the locking ring), according to the present disclosure.
  • the opposing circumferentially offset surfaces 946, 948 of each axial protrusion 940 may be oriented at angles ⁇ , ⁇ , respectively, with respect to a plane 962 (which may be similar to plane 362 depicted in FIG. 5 that is perpendicular to the longitudinal centerline 360) through the second component 930.
  • angles ⁇ and/or ⁇ may be individually selected within a range having lower and upper values of 20°, 30°, 40°, 50°, 60°, 70°, 80°, 85°, 89°, more than 89°, or any value therebetween.
  • the angles ⁇ and/or ⁇ may be between 30° and 60°, between 40° and 70°, between 50° and 80°, or between 30° and 85°. More particularly, the angles ⁇ and/or ⁇ may be between 30° and 40°, between 35° and 45°, between 40° and 50°, between 45° and 55°, between 50° and 60°, between 55° and 65°, between 60° and 70°, between 65° and 75°, between 70° and 80°, or between 75° and 85°.
  • angles ⁇ and ⁇ are shown as being the same in FIG. 9, it may be appreciated that in other embodiments, the angles ⁇ and ⁇ may be different. In at least one embodiment, lower values for the angles ⁇ and/or ⁇ may increase the ability of the opposing circumferentially offset surfaces 946, 948 to engage with circumferentially offset surfaces 1046, 1048 of an axial recess 1032 in a locking ring 1000.
  • higher values for the angles the angles ⁇ and/or ⁇ may increase the ability of the opposing circumferentially offset surfaces 946, 948 to apply a rotational force to the circumferentially offset surfaces 1046, 1048 of the axial recess 1032 without the second component 930 slipping rotationally relative to the locking ring 1000.
  • the opposing circumferentially offset surfaces 1046, 1048 defining each axial recess 1032 may be arranged and designed to mate with the opposing circumferentially offset surfaces 946, 948 of the corresponding axial protrusion 940.
  • the opposing circumferentially offset surfaces 1046, 1048 may be oriented at angles E, Z, respectively, with respect to the plane 962.
  • the angles E and/or Z may be individually selected within a range having lower and upper values of 20°, 30°, 40°, 50°, 60°, 70°, 80°, 85°, 89°, more than 89°, or any value therebetween.
  • angles E and/or Z may be between 30° and 60°, between 40° and 70°, between 50° and 80°, or between 30° and 85°. More particularly, the angles E and/or Z may be between 30° and 40°, between 35° and 45°, between 40° and 50°, between 45° and 55°, between 50° and 60°, between 55° and 65°, between 60° and 70°, between 65° and 75°, between 70° and 80°, or between 75° and 85°.
  • the angles E and Z are shown as being the same in FIG. 9, it may be appreciated that in other embodiments, the angles E and Z may be different. In at least one embodiment, the angles ⁇ and E may be the same, and the angles ⁇ and Z may be the same.
  • the inner axial surface 1050 defining each axial recess 1032 is arranged and designed to mate with the outer axial surface 950 of the corresponding axial protrusion 940. As such, the inner axial surface 1050 of each axial recess 1032 may be substantially parallel to the plane 962.
  • the opposing circumferentially offset surfaces 946, 948 may be a planar surface oriented at the angles ⁇ and ⁇ with respect to the plane 962, such as the circumferentially offset surface 948 depicted in FIG. 9. As depicted by the opposing circumferentially offset surface 946, one or more of the circumferentially offset surfaces 946, 948 may be a curved or otherwise non-planar surface that includes at least a portion of the circumferentially offset surface 946 oriented at an angle ⁇ or ⁇ with respect to a plane 962.
  • one or more of the circumferentially offset surfaces 946, 948 may be a curved surface that includes a portion having an angle ⁇ or ⁇ with respect to a plane 962. In other embodiments, one or more of the circumferentially offset surfaces 946, 948 may include a portion of the outer radial surface that is oriented at an angle ⁇ or ⁇ and another portion that is angled at a second angle that may be greater than or less than the angle ⁇ or ⁇ . One or more of the circumferentially offset surfaces 1046, 1048 may be configured to mate complimentarily with substantially all of one or more of the circumferentially offset surfaces 946, 948 of the axial protrusion 940.
  • One or more of the circumferentially offset surfaces 1046, 1048 may be configured such that a portion of one or more of the circumferentially offset surfaces 1046, 1048 may mate complimentarily with one or more of the circumferentially offset surfaces 946, 948 of the axial protrusion 940.
  • the circumferentially offset surface 946 depicted in FIG. 9 includes a portion at an angle ⁇ that mates complimentarily with a portion of the circumferentially offset surface 1046 at an angle Z.
  • Other portions of one or more of the circumferentially offset surfaces 1046, 1048 may not complimentarily mate with one or more of the circumferentially offset surfaces 946, 948.
  • interfaces 1258 between an outer radial surface 1244 and opposing circumferentially offset surfaces 1246, 1248 of a locking ring 1200 may be sharp (e.g., about 90°) or curved, in some embodiments.
  • the radius of curvature may be between about 1 mm and about 5 mm, between about 3 mm and about 7 mm, between about 5 mm and about 10 mm, between about 8 mm and about 12 mm.
  • FIG. 10 depicts a perspective view of an embodiment of a locking ring 1200
  • FIG. 11 depicts a top view of the second axial surface 1231 of the locking ring 1200 shown in FIG. 10, according to the present disclosure.
  • Each axial recess 1232 formed in the second axial surface 1231 of the locking ring 1200 may be arranged and designed to receive a corresponding axial protrusion of a second component.
  • the present disclosure generally describes the axial protrusions on the second component and recesses on the first component, as described above.
  • the second axial surface of the locking ring may have one or more axial protrusions extending therefrom
  • the outer axial surface of the second component may have one or more corresponding indentations or recesses formed therein.
  • the configuration of the axial protrusions and the recesses may be reversed and/or the second axial surface of the locking ring and the outer axial surface of the second component may each have both axial protrusions and axial recesses.
  • the method 1300 may include inserting 1372 a shaft of a first component through a bore formed axially through a locking ring.
  • the locking ring may include a body having first and second opposing axial surfaces.
  • An axial protrusion extending from a second component may be aligned 1374 in an axial recess formed in the second axial surface of the locking ring.
  • One or more engagement features (e.g. threads) formed on an outer surface of the shaft may be engaged 1376 with one or more engagement features (e.g. threads) formed on an inner surface of the second component.
  • a force may be applied 1378 to a circumferentially offset surface of the axial recess to compress the circumferentially offset surface.
  • the method 1300 may also include welding 1380 the locking ring to the first component.
  • the terms “inner” and “outer”; “up” and “down”; “upper” and “lower”; and other like terms as used herein refer to relative positions to one another and are not intended to denote a particular direction or spatial orientation.
  • the terms “couple,” “coupled,” “connect,” “connection,” “connected,” “in connection with,” and “connecting” refer to "in direct connection with” or “in connection with via another element or member.”

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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)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Connection Of Plates (AREA)

Abstract

La présente invention concerne un anneau de verrouillage positionné entre des premier et deuxième composants. L'anneau de verrouillage comprend un corps ayant des premières et deuxième surfaces axiales opposées et un alésage formé axialement à travers celui-ci. Un évidement est formé dans la deuxième surface axiale. L'évidement est défini par une surface radiale externe, des première et deuxième surfaces opposées, décalées de façon circonférentielle, et une surface axiale interne disposée entre les première et deuxième surfaces axiales. Au moins une partie de la première surface décalée de façon circonférentielle est orientée à un angle compris entre 30° et 85° par rapport à un plan qui est perpendiculaire à une ligne centrale longitudinale à travers le corps.
PCT/US2014/051225 2013-08-15 2014-08-15 Anneau de verrouillage avec évidements coniques Ceased WO2015023925A1 (fr)

Applications Claiming Priority (4)

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US201361866365P 2013-08-15 2013-08-15
US61/866,365 2013-08-15
US14/459,936 US20150050076A1 (en) 2013-08-15 2014-08-14 Locking ring with tapered recesses
US14/459,936 2014-08-14

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WO2015023925A1 true WO2015023925A1 (fr) 2015-02-19

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