WO2015153541A1 - Outils de verrouillage de suspension de tubage - Google Patents

Outils de verrouillage de suspension de tubage Download PDF

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Publication number
WO2015153541A1
WO2015153541A1 PCT/US2015/023471 US2015023471W WO2015153541A1 WO 2015153541 A1 WO2015153541 A1 WO 2015153541A1 US 2015023471 W US2015023471 W US 2015023471W WO 2015153541 A1 WO2015153541 A1 WO 2015153541A1
Authority
WO
WIPO (PCT)
Prior art keywords
casing hanger
inner body
tool
lockdown tool
wellhead housing
Prior art date
Application number
PCT/US2015/023471
Other languages
English (en)
Inventor
Edward T. Thornburrow
Edward J. THORNTON
Original Assignee
Cameron International Corporation
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
Priority claimed from US14/244,583 external-priority patent/US9598928B2/en
Application filed by Cameron International Corporation filed Critical Cameron International Corporation
Priority to CA2948325A priority Critical patent/CA2948325C/fr
Priority to GB1618263.6A priority patent/GB2540091B/en
Priority to US15/300,935 priority patent/US10392883B2/en
Publication of WO2015153541A1 publication Critical patent/WO2015153541A1/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
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • 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
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • E21B23/03—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for setting the tools into, or removing the tools from, laterally offset landing nipples or pockets
    • 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
    • E21B17/18—Pipes provided with plural fluid passages
    • 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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E21B33/04—Casing heads; Suspending casings or tubings in well heads
    • 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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
    • E21B33/14—Methods or devices for cementing, for plugging holes, crevices or the like for cementing casings into boreholes
    • 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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E21B33/04—Casing heads; Suspending casings or tubings in well heads
    • E21B33/0415—Casing heads; Suspending casings or tubings in well heads rotating or floating support for tubing or casing hanger
    • 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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E21B33/04—Casing heads; Suspending casings or tubings in well heads
    • E21B33/0422—Casing heads; Suspending casings or tubings in well heads a suspended tubing or casing being gripped by a slip or an internally serrated member

Definitions

  • tubular strings can be run into wells through wellhead assemblies.
  • wells are often lined with casing that generally serves to stabilize the well and to isolate fluids within the wellbore from certain formations penetrated by the well (e.g., to prevent contamination of freshwater reservoirs).
  • casing is frequently hung in a well from a hanger in the wellhead assembly and cemented into place within the well.
  • cement can be pumped down a casing string in a well, out the bottom of the casing string, and then up the annular space surrounding the casing string. The cement is then allowed to set in the annular space.
  • Embodiments of the present disclosure generally relate to tools for selectively locking down hangers within wellheads.
  • a lockdown tool can also function as a running tool and a cementing tool. That is, the tool can be used to run the wellhead hanger (e.g., a casing hanger) into a wellhead, to secure the wellhead hanger and restrain its movement within the wellhead by locking the tool in place with a locking mechanism, and to then facilitate cementing of a tubular string (e.g., a casing string) within the well.
  • the lockdown tool includes a collapsible retaining ring that can be released to engage a wellhead housing and lock the tool in place.
  • the retaining ring can also be collapsed to unlock the tool and allow it to be removed from the wellhead housing.
  • an outer body of the lockdown tool can be rotated in one direction with respect to an inner body of the tool to release the retaining ring and lock the tool in place.
  • the outer body can later be rotated in the opposite direction to collapse the retaining ring, unlocking the tool from the wellhead housing. Further rotation of the outer body in the opposite direction can also cause the inner body of the tool to rotate and unthread from the casing hanger, allowing the tool to then be removed from the wellhead housing.
  • FIG. 1 generally depicts various components, including one or more tubular strings and associated hangers, that can be installed at a well in accordance with one embodiment of the present disclosure
  • FIG. 2 is an elevational view of a tool for installing a casing hanger in a wellhead housing and locking the casing hanger in place within the wellhead housing in accordance with one embodiment
  • FIG. 3 is a section view of the tool of FIG. 2 positioned within a wellhead housing and depicts a retaining ring in an unlocked position in accordance with one embodiment
  • FIG. 4 is a detail view depicting a hold pin and set screw disposed in a hole of the tool of FIG. 2 to engage a neck of the casing hanger in accordance with one embodiment
  • FIG. 5 is a section view of the tool of FIG. 2 and depicts the retaining ring in a locked position after rotating an outer body of the tool to release the retaining ring in accordance with one embodiment
  • FIG. 6 is a section view of the tool of FIG. 2 after rotating the outer body of the tool to return the retaining ring to the unlocked position in accordance with one embodiment
  • FIG. 7 is a section view of the tool of FIG. 2 after continuing to rotate the outer body of the tool following the return of the retaining ring to the unlocked position to disconnect an inner body of the tool from the casing hanger in accordance with one embodiment
  • FIG. 8 is a section view of a tool for locking a casing hanger in place within the wellhead housing in accordance with one embodiment.
  • FIGS. 9—12 are section views of another tool for locking a casing hanger in place within the wellhead housing in accordance with certain embodiments.
  • FIG. 1 a system 10 is illustrated in FIG. 1 in accordance with one embodiment.
  • the system 10 is a production system that facilitates extraction of a resource, such as oil, from a reservoir 12 through a well 14.
  • Wellhead equipment 16 is installed on the well 14.
  • the wellhead equipment 16 includes at least one casing head 18 and tubing head 20, as well as wellhead hangers 22.
  • the components of the wellhead equipment 16 can differ between applications, and could include a variety of casing heads, tubing heads, spools, hangers, sealing assemblies, stuffing boxes, pumping tees, and pressure gauges, to name only a few possibilities.
  • the wellhead hangers 22 can be positioned on landing shoulders 24 within hollow wellhead bodies (e.g., within the tubing and casing heads). These landing shoulders 24 can be integral parts of tubing and casing heads or can be provided by other components, such as sealing assemblies (e.g., packoffs) or landing rings disposed in the tubing and casing heads.
  • Each of the hangers 22 can be connected to a tubular string, such as a tubing string 26 or a casing string 28, to suspend the string within the well 14.
  • the well 14 can include a single casing string 28 or include multiple casing strings 28 of different diameters. Any suitable devices or machines may be used to run tubular strings into wells through wellheads and install hangers attached to the tubular strings in the wellheads. For example, a top drive can be used to run a casing string into a well and a casing hanger into a wellhead.
  • Casing strings 28 are often cemented in place within the well.
  • cement is pumped down a casing string 28 and into an annular space around the casing string 28.
  • a plug can then be pumped down the casing string 28 with a displacement fluid (e.g., drilling mud) to generally push additional cement in the casing string out the bottom and into the annular space.
  • a displacement fluid e.g., drilling mud
  • drilling mud e.g., drilling mud
  • Various embodiments of the present disclosure relate to lockdown tools for locking casing hangers in place within wellheads to prevent unwanted lifting of the casing hangers off their landing shoulders, such as during cementing of casing strings connected to the hangers.
  • Some lockdown tools can also serve as running tools and cementing tools, allowing a single tool to be used to run a casing hanger into a wellhead housing, to lock the casing hanger in place within the wellhead housing (e.g., by locking the tool in place above the wellhead housing), and to allow fluids displaced during cementing to flow up the well through flow-by passages provided in the tool.
  • lockdown tools are described below in connection with locking down a casing hanger, it will be appreciated that lockdown tools could also be used to secure other components within a wellhead housing.
  • FIG. 2 one example of a lockdown tool 32 for locking a casing hanger 34 in place within a wellhead housing is depicted in FIG. 2.
  • the lockdown tool 32 also serves as a running tool and cementing tool, as described in greater detail below.
  • the lockdown tool 32 is coupled at its lower end to the casing hanger 34 and at its upper end to a landing string 36, such as a pup joint.
  • the landing string 36 can be connected to a top drive or any other suitable machine for lowering and raising the lockdown tool 32, the casing hanger 34, and an attached casing string with respect to the well 14 and wellhead equipment 16.
  • the lockdown tool 32 includes an inner body 40 coupled to an outer body 42.
  • a locking mechanism is provided as an outwardly biased, collapsible retaining ring 44 (e.g., a C-ring) carried by the inner body 40.
  • the retaining ring 44 can be selectively engaged by moving (e.g., rotating) the outer body 42 with respect to the inner body 40 to allow the retaining ring 44 to expand and secure the lockdown tool to the wellhead housing. This serves to also lock the casing hanger 34 in place and inhibits axial movement of the casing hanger 34 off its landing shoulder 24 within the wellhead housing.
  • locking mechanisms in the form of retaining rings
  • any other suitable locking mechanisms could be used to lock the tool 32 and the casing hanger 34 in place within a wellhead housing.
  • the locking mechanisms could instead be provided as pins or lockscrews.
  • the lockdown tool 32 includes various flow-by or flow-through passages to facilitate cementing of a casing string attached to the casing hanger 34 while the casing hanger 34 is locked in place by the tool 32.
  • the inner body 40 includes flow slots 48 in its exterior surface and the outer body 42 includes flow ports 50. Cement can be pumped down through central bores of the landing string 36, the outer body 42, the inner body 40, the casing hanger 34, and an attached casing string.
  • the slots 48 and ports 50 are separate from the central bores of the inner and outer tool bodies 40 and 42, allowing drilling mud displaced by the cement to flow up the well and through the lockdown tool 32 via the slots 48 and ports 50 even while cement or other fluids are pumped down through the central bores.
  • the lockdown tool 32 also includes holes 54 and 56.
  • the holes 54 include screws for engaging an internal stop ring and the holes 56 include pins for engaging the casing hanger 34.
  • FIG. 3 A section view of the lockdown tool 32 and the casing hanger 34 within a wellhead housing 60 is provided in FIG. 3.
  • the wellhead housing 60 can be a casing head 18 or some other component.
  • the inner body 40 and the outer body 42 are threaded to one another via mating threaded surfaces 62 and 64, and the outer body 42 is threaded down onto the inner body 40 to restrain the retaining ring 44 within a circumferential groove 66 of the inner body 40.
  • a stop ring 68 is positioned within an outer groove 70 of the inner body 40 and an inner groove 72 of the outer body 42. The stop ring 68 limits the extent to which the outer body 42 can move along the inner body 40 when rotating the outer body 42 along the threads of the surfaces 62 and 64.
  • the stop ring 68 (e.g., a C-ring) is outwardly biased and pushed into the outer groove 70 of the inner body 40 by screws 74 threaded into the holes 54.
  • the outwardly biased stop ring 68 is positioned entirely within the inner groove 72 of the outer body 42, allowing the outer body 42 to be threaded onto the inner body 40 and to collapse the retaining ring 44 into the groove 66.
  • the screws 74 can then be used to push the stop ring 68 partially into the outer groove 70.
  • a shear screw 78 can also be installed through the outer body 42 and into the inner body 40 at a location that does not have a flow slot 48 (and is consequently depicted in the present figures within a cutaway area).
  • the shear screw 78 facilitates running of the lockdown tool 32 and the casing hanger 34 into the wellhead housing 60 by preventing inadvertent rotation of the outer body 42 with respect to the inner body 40 and premature release of the retaining ring 44 from the groove 66.
  • the inner body 40 and the casing hanger 34 are also threaded to one another with mating threaded surfaces 82 and 84 in FIG. 3. These two components can be threaded together before running the tool 32 and the casing hanger 34 into the wellhead housing 60. Seals 86 engage seal neck 88 of the casing hanger 34 to inhibit leakage. In at least some embodiments, holding pins are used to prevent inadvertent rotation of the inner body 40 with respect to the casing hanger 34.
  • the seal neck 88 includes a recessed portion 90 that is engaged by a holding pin 92 positioned within a hole 56. A screw 94 is inserted into the hole 56 and shares a threaded interface 96 with the inner body 40.
  • the screw 94 can be threaded into the hole 56 to push the holding pin 92 into engagement with the recessed portion 90 of the seal neck 88. While only one arrangement of a pin 92 and a screw 94 in a hole 56 is depicted in FIG. 4, it is noted that such pins 92 and screws 94 could be provided in multiple holes 56 about the inner body 40 for resisting rotation of the inner body 40 with respect to the casing hanger 34. The screws 94 could be tightened to a specified torque to force the pins 92 against the seal neck 88.
  • the lockdown tool 32 and the casing hanger 34 can be coupled to the landing string 36 with a threaded surface 102 of the outer body 42 and then run into the wellhead housing 60 to land the casing hanger 34 on its landing shoulder 24 (not shown in FIG. 3).
  • the retaining ring 44 is aligned with a groove 108 in the wellhead housing 60.
  • the retaining ring 44 can then be released by rotating the outer body 42 along the inner body 40 and allowing the retaining ring 44 to expand into and engage the groove 108, as shown in FIG. 5.
  • the retaining ring 44 secures the lockdown tool 32 to the wellhead housing 60 and inhibits axial movement of the lockdown tool 32 and the casing hanger 34 within the wellhead housing 60.
  • the groove 108 is also used for installation of a seal assembly over the casing hanger 34 once cementing is complete and the tool 32 has been removed.
  • the tool 32 In addition to locking the casing hanger 34 in place, the tool 32 also helps ensure that the casing hanger 34 has been correctly landed. Particularly, the tool 32, the casing hanger 34, and the wellhead housing 60 are arranged such that the retaining ring 44 is aligned with the groove 108 only when the casing hanger is fully landed within the wellhead housing 60. If the casing hanger 34 is positioned off its landing shoulder, the retaining ring 44 would not align with the groove 108 and would not lock the tool 32 and the casing hanger 34 in place.
  • Cement can be pumped down through the lockdown tool 32, the casing hanger 34, and an attached casing string 28 to cement the casing string while the tool 32 locks the casing hanger 34 in place within the wellhead housing 60 and limits axial movement of the casing hanger 34 off its landing shoulder.
  • Drilling mud returns i.e., drilling mud displaced by the flowing cement
  • the lockdown tool 32 can then be disconnected from the casing hanger 34 (e.g., after the cement in the annular space outside the casing string is confirmed to be hard).
  • the threaded surfaces 62 and 64 have threads provided in one direction and the threaded surfaces 82 and 84 have threads provided in an opposite direction.
  • the threaded surfaces 62 and 64 have right-handed threads and the threaded surfaces 82 and 84 have left-handed threads in at least one embodiment.
  • the landing string 36 is rotated counter-clockwise to turn the outer body 42 counterclockwise about the inner body 40.
  • the outer body 42 As the outer body 42 turns in this manner, it translates up the inner body 40 and allows the collapsed retaining ring 44 to expand into the groove 108 and lock the tool 32 and the casing hanger 34 within the wellhead housing 60 (as shown in FIG. 5). Further counter-clockwise rotation of the outer body 42 is limited by engagement of the stop ring 68 with the upper shoulder of the groove 70 of the inner body 40.
  • the landing string 36 can be rotated clockwise to thread the outer body 42 back down the inner body 40 and collapse the retaining ring 44 out of the groove 108. Axial movement of the outer body 42 down along the inner body 40 is again limited by engagement of the stop ring 68, this time with the lower shoulder of the groove 70. Continued clockwise rotation of the landing string 36 then causes both the outer body 42 and the inner body 40 to rotate together (after overcoming friction of the pins 92 on the seal neck 88) and backs the inner body 40 off of the casing hanger 34 until the tool 32 disconnects, as shown in FIG. 7. The tool 32 can then be removed from the wellhead housing 60 and a seal assembly (e.g., a packoff) can be installed over the casing hanger 34. In some embodiments, the groove 108 can also be used during installation of the seal assembly.
  • a seal assembly e.g., a packoff
  • FIG. 8 An additional lockdown tool 112 is depicted in FIG. 8 in accordance with another embodiment.
  • the lockdown tool 112 includes an inner body 114 coupled to an outer body 116 via mating threaded surfaces 122 and 124.
  • the lockdown tool 112 also includes a collapsible retaining ring 118 that functions similarly to the retaining ring 44 described above. That is, the outer body 116 can be rotated (e.g., by a landing string 36 coupled to the outer body 116) to translate along the inner body 114 and selectively release the retaining ring 118.
  • the lockdown tool 112 and the casing hanger 34 can be locked in place by releasing the retaining ring 118 to extend out of groove 126 of the inner body 114 and into the groove 108, and then unlocked by collapsing the retaining ring 118, using the outer body 116.
  • the inner body 114 and the outer body 116 include flow slots 128 and flow ports 130, which at least function similarly to slots 48 and ports 50 described above in that they allow drilling mud returns to flow through the tool 112.
  • One or more stop pins 134 in the outer body 116 extend into a groove 136 and function similarly to the stop ring 68 to limit axial movement of the outer body 116 with respect to the inner body 114. Indeed, the stop pins 134 could be replaced by the stop ring 68 in other embodiments.
  • the tool 112 depicted in FIG. 8 is configured as a lockdown and cementing tool, it is not configured as a running tool. Rather, the casing hanger 34 is installed in the wellhead housing 60 on a landing shoulder with a separate running tool. The tool 112 can then be run into the wellhead housing 60 to lock the installed casing hanger 34 in place during cementing.
  • the inner body 114 includes one or more spring- loaded, anti-rotation pins 140 that prevent rotation of the inner body 114 with respect to the casing hanger 34. The springs allow the pins 140 to retract into the inner body 114 when the tool 112 is landed onto the casing hanger 34 with the pins 140 out of alignment with mating recesses in the casing hanger 34.
  • the tool 112 can then be turned on the casing hanger 34.
  • the biasing force of the springs pushes the pins 140 into the recesses.
  • the mating engagement of the pins 140 with the recesses allows the inner body 114 to remain stationary while the outer body 116 is rotated to release and collapse the retaining ring 118.
  • FIG. 9 Another lockdown tool 146 is depicted in FIG. 9 in accordance with one embodiment.
  • the lockdown tool 146 includes an inner body 148, an outer body 150, and a collapsible retaining ring 152.
  • the inner body 148 is coupled to a casing hanger 34 via mating threaded surfaces 84 and 154, and to the outer body 150 via mating threaded surfaces 156 and 158.
  • the retaining ring 152 is similar or identical to the retaining rings 44 and 118, and can be selectively collapsed or released by rotating the outer body 150 about the inner body 148.
  • the wellhead housing 60 can have multiple grooves 108 capable of receiving a retaining ring 44, 118, or 152. In FIG.
  • the depicted portion of the wellhead housing 60 has two grooves and the retaining ring 44 of the lockdown tool 32 is received in the lower groove 108.
  • the retaining ring 152 is shown in FIG. 9 as extending from a groove 160 of the tool 146 and into an upper groove 108 (e.g., a tubing hanger locking groove) of the wellhead housing 60; this locks the tool 146 and the casing hanger 34 in place within the housing 60.
  • the lockdown tool 146 includes flow ports 162 through the inner body 148 and flow ports 164 through the outer body 150. Similar to the flow slots 48 and flow ports 50 described above, these flow ports 162 and 164 can be spaced circumferentially about the lockdown tool 146 and allow fluid (e.g., drilling mud returns) to flow through the tool 146, as generally represented by the arrows in FIG. 9.
  • the flow ports 162 are positioned through the inner body 148 apart from the retaining ring 152, and this separation can reduce contamination of the groove 160 during cementing in some instances (e.g., in the event of over-cementing the casing).
  • the lockdown tool 146 also includes a stop ring 168 (e.g., a C-ring) that limits axial travel of the inner body 148 with respect to the outer body 150.
  • the stop ring 168 is inwardly biased and extends between a groove 170 of the inner body 148 and a groove 172 of the outer body 150.
  • screws can be inserted through holes 174 in the outer body 150 and threaded into tapped holes of the stop ring 168 to expand and hold the stop ring 168 in the groove 172 so that the stop ring 168 does not interfere with receipt of the inner body 148 in the outer body 150.
  • Alignment of the screw holes 174 through the outer body 150 and the tapped holes in the stop ring 168 can be maintained with a locating peg. Once the grooves 170 and 172 are aligned, the assembly screws can be removed to allow the inward bias of the stop ring 168 to cause the stop ring 168 to contract and extend into the groove 170 of the inner body 148 from the groove 172.
  • the lockdown tool 146 can include various features to inhibit rotation of components relative to one another during assembly and running into a wellhead. For instance, like the shear screw 78 of the lockdown tool 32, a shear screw 178 can be installed through the outer body 150 and into the inner body 148 to prevent inadvertent rotation of the outer body 150 with respect to the inner body 148 during running of the casing hanger 34 and the lockdown tool 146 into the wellhead housing 60 (e.g., via a landing string 36 threaded to the upper end of the tool 146). Although not shown in FIG. 9, the lockdown tool 146 could also use holding pins, such as pins 92 described above with respect to FIG. 4, inserted through the inner body 148 into contact with the seal neck 88 of the casing hanger 34 to avoid unintentional rotation of the inner body 148 with respect to the casing hanger 34.
  • holding pins such as pins 92 described above with respect to FIG. 4
  • Seals 182 of the tool 146 inhibit leaking between the inner body 148 and the outer body 150.
  • the tool 146 includes a single seal 182 provided between an inner surface of the inner body 148 and an adjacent surface of the outer body 150, such as shown in FIG. 9.
  • the lockdown tool 146 includes a pressure-testable seal arrangement with a first pair of seals 182 in contact with the inner surface of the inner body 148 and an adjacent surface of the outer body 150, and a second pair of seals 182 at the exterior of the inner body 148 (i.e., in contact with the outer surface of the inner body 148 and an adjacent surface of the outer body 150). The lockdown tool 146 is shown in FIG.
  • the fluid conduit 186 is provided between two flow ports 162 of the inner body 148 and connects the sealed regions between the inboard seals 182 and the outboard seals 182 so that both of these sealed regions and the conduit 186 are in fluid communication with the test port 184. This enables pressure testing of the seals 182 via the port 184 to verify proper sealing.
  • the casing hanger 34 and the lockdown tool 146 can be assembled and pressure-tested at a remote facility before being shipped to a wellsite for installation in a wellhead housing 60.
  • the stop ring 168 can be positioned in an intermediate position between the upper and lower ends of the groove 170, as shown in FIG. 10.
  • the outer body 150 can be rotated with respect to the inner body 148 (e.g., via the landing string 36) to break the shear screw 178 and then release the retaining ring 152 and lock the tool 146 in place, as shown in FIG. 9.
  • the surfaces 156 and 158 are threaded with left-handed threads and the outer body 150 is rotated clockwise to cause the outer body 150 to travel upward along the inner body 148.
  • the stop ring 168 travels with the outer body 150 toward the upper end of the groove 170.
  • the outer body 150 is rotated (counterclockwise in the case of left-handed threaded surfaces 156 and 158) to move the outer body 150 down along the inner body 148 and retract the retaining ring 152 from the groove 108.
  • the outer body 150 can then continue to be rotated down the inner body 148 until the stop ring 168 retracts inwardly into a recessed portion 190 at the lower end of the groove 170, as shown in FIG. 11.
  • the outer body 150 can then be rotated in the opposite direction (e.g., clockwise in the case of left-handed threaded surfaces 156 and 158).
  • the stop ring 168 in the recessed portion 190 causes the inner body 148 to rotate synchronously with the outer body 150, allowing the rotation to unthread the inner body 148 from the casing hanger 34.
  • the disconnected lockdown tool 146 can then be pulled out of the wellhead housing 60.
  • a lockdown tool can include an outer body assembled from multiple components.
  • the outer body 150 of the lockdown tool 146 is formed from two components coupled together via a threaded interface 192.
  • Set screws 194 can be used to prevent inadvertent unthreading of the two components.
  • a multi-piece outer body can be used for ease of manufacturing.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Catching Or Destruction (AREA)

Abstract

L'invention concerne divers outils pour le verrouillage d'éléments en place à l'intérieur d'une enveloppe de tête de puits. Dans un mode de réalisation, un système comprend un outil de verrouillage (32) ayant un corps interne (40), un corps externe (42) couplé au corps interne, et un mécanisme de verrouillage (44) porté par le corps interne. Le mécanisme de verrouillage peut être mis en prise de façon sélective en déplaçant le corps externe par rapport au corps interne pour fixer l'outil de verrouillage à l'enveloppe de tête de puits (60). L'invention concerne en outre des systèmes, des dispositifs et des procédés supplémentaires.
PCT/US2015/023471 2014-04-03 2015-03-31 Outils de verrouillage de suspension de tubage WO2015153541A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA2948325A CA2948325C (fr) 2014-04-03 2015-03-31 Outils de verrouillage de suspension de tubage
GB1618263.6A GB2540091B (en) 2014-04-03 2015-03-31 Casing hanger lockdown tools
US15/300,935 US10392883B2 (en) 2014-04-03 2015-03-31 Casing hanger lockdown tools

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US14/244,583 US9598928B2 (en) 2014-04-03 2014-04-03 Casing hanger lockdown tools
US14/244,583 2014-04-03
US201562134459P 2015-03-17 2015-03-17
US62/134,459 2015-03-17

Publications (1)

Publication Number Publication Date
WO2015153541A1 true WO2015153541A1 (fr) 2015-10-08

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PCT/US2015/023471 WO2015153541A1 (fr) 2014-04-03 2015-03-31 Outils de verrouillage de suspension de tubage

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CA (1) CA2948325C (fr)
GB (1) GB2540091B (fr)
WO (1) WO2015153541A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018204542A1 (fr) * 2017-05-03 2018-11-08 Baker Hughes, A Ge Company, Llc Ensemble de suspension avec pénétrateurs

Citations (6)

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US4951988A (en) * 1988-12-16 1990-08-28 Vetco Gray Inc. Casing hanger packoff retrieving tool
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018204542A1 (fr) * 2017-05-03 2018-11-08 Baker Hughes, A Ge Company, Llc Ensemble de suspension avec pénétrateurs
US10731434B2 (en) 2017-05-03 2020-08-04 Baker Hughes, A Ge Company, Llc Hanger assembly with penetrators

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GB2540091B (en) 2018-10-03
GB201618263D0 (en) 2016-12-14
CA2948325A1 (fr) 2015-10-08
CA2948325C (fr) 2022-07-19
GB2540091A (en) 2017-01-04

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