WO2017119868A1 - Suspension de colonne perdue avec charge radiale équilibrée - Google Patents

Suspension de colonne perdue avec charge radiale équilibrée Download PDF

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Publication number
WO2017119868A1
WO2017119868A1 PCT/US2016/012110 US2016012110W WO2017119868A1 WO 2017119868 A1 WO2017119868 A1 WO 2017119868A1 US 2016012110 W US2016012110 W US 2016012110W WO 2017119868 A1 WO2017119868 A1 WO 2017119868A1
Authority
WO
WIPO (PCT)
Prior art keywords
cone
slips
slip
splines
ramps
Prior art date
Application number
PCT/US2016/012110
Other languages
English (en)
Inventor
Aravind KANDASWAMI
Sebastian CALO
Original Assignee
Schlumberger Canada Limited
Services Petroliers Schlumberger
Schlumberger Technology B.V.
Schlumberger Technology 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
Application filed by Schlumberger Canada Limited, Services Petroliers Schlumberger, Schlumberger Technology B.V., Schlumberger Technology Corporation filed Critical Schlumberger Canada Limited
Priority to PCT/US2016/012110 priority Critical patent/WO2017119868A1/fr
Publication of WO2017119868A1 publication Critical patent/WO2017119868A1/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
    • 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

Definitions

  • Liner hangers are used for hanging various types of liners from casing disposed along a wellbore.
  • a liner hanger is secured in the wellbore by slips which may be actuated mechanically and/or hydraulically.
  • the slips are moved radially outward until sufficiently engaged with an interior surface of the casing to support the liner in the wellbore.
  • the radial load applied by the slips to the surrounding casing often is not uniformly distributed over the length of the slips. The radial loading tends to be concentrated at the top of the slips which can lead to plastic deformation or other detrimental effects with respect to components of the liner hanger and/or with respect to the casing.
  • a system and methodology provide a liner hanger constructed to better distribute loading.
  • the liner hanger is constructed with a cone and a plurality of slips slidably mounted with respect to the cone.
  • the cone is constructed with ramps and cone splines arranged to engage the plurality of slips.
  • the slips comprise corresponding slip splines which engage the cone splines.
  • the arrangement of ramps and splines enable radial movement of the slips into engagement with a surrounding surface, e.g. a casing surface, in a manner which more uniformly distributes loading.
  • Figure 1 is a cross-sectional view of an example of a liner hanger positioned in a casing deployed along a wellbore, according to an embodiment of the disclosure
  • Figure 2 is an orthogonal view of the liner hanger illustrated in Figure 1, according to an embodiment of the disclosure
  • Figure 3 is an orthogonal view of a portion of the liner hanger illustrated in Figure 1, according to an embodiment of the disclosure
  • Figure 4 is an orthogonal view of an example of a cone which may be used in the liner hanger, according to an embodiment of the disclosure
  • Figure 5 is an orthogonal view of an example of a slip which may be used in the liner hanger, according to an embodiment of the disclosure
  • Figure 6 is an orthogonal view of a portion of a cone which illustrates an example of cone splines and ramps, according to an embodiment of the disclosure.
  • Figure 7 is an orthogonal view of a portion of a slip which illustrates slip splines of different widths, according to an embodiment of the disclosure.
  • the present disclosure generally relates to a a system and methodology for hanging liners.
  • casing is deployed along a wellbore and a liner is run downhole through the casing and suspended from the casing.
  • a liner hanger may be deployed downhole with the liner and then actuated once positioned at a lower end of the casing to engage the casing and support the liner.
  • embodiments of the present liner hanger are
  • the liner hanger is constructed with a cone and a plurality of slips slidably mounted with respect to the cone.
  • the slips are actuatable in a manner which moves the slips radially outward into engagement with a surrounding surface, e.g. a surrounding inner surface of the casing.
  • the cone is constructed with ramps and cone splines arranged to engage the plurality of slips while in a radially contracted position and also while in an actuated, radially expanded position.
  • the slips comprise corresponding slip splines which engage the cone splines to provide support for the liner once the liner hanger is engaged with the casing.
  • the arrangement of ramps and splines effectively distribute loading along a substantial length of the slips rather than concentrating loading at an upper portion of the slips.
  • FIG. 1 an example of a well system 20 is illustrated as comprising a liner hanger 22.
  • the liner hanger 22 is deployed downhole within a casing 24 disposed along a wellbore 26.
  • the liner hanger 22 is deployed downhole on a well string 28 and then actuated to support a liner 30 suspended below the casing 24.
  • the liner hanger 22 may comprise a mandrel 32 and a cone
  • the liner hanger 22 also comprises a plurality of slips 40 which are operationally engaged with the cone 34 in a manner which allows the plurality of slips 40 to the actuated in a radially outward direction and into engagement with surface 38.
  • the plurality of slips 40 may be selectively shifted to the radially outward position engaging casing 24 by an actuator 42, e.g. a mechanical or hydraulic actuator.
  • actuator 42 may comprise a hydraulic piston 44 which is selectively actuatable to move the plurality of slips 40 in a linear direction until the slips 40 are forced radially outward into engagement with the surrounding casing 24, as explained in greater detail below.
  • the hydraulic piston 44 may be cylindrical and disposed around the exterior of mandrel 32. Hydraulic actuating fluid may be supplied downhole along an interior 46 of mandrel 32 and then to hydraulic piston 44 via a port 48 extending through the wall forming mandrel 32.
  • seal stacks 50 provide a seal between the hydraulic piston 44 and the outer surface of mandrel 32.
  • the seal stacks 50 are positioned to enable the pressure of the hydraulic actuating fluid to shift the piston 44 linearly against the plurality of slips 40 via, for example, a push ring 52.
  • the liner hanger 22 may comprise other components, such as a slip retainer 54 for retaining the slips 40 and a gauge ring 56 mounted below the piston 44.
  • FIG. 1 an embodiment of liner hanger 22 is illustrated in which the plurality of slips 40 is received in a corresponding plurality of openings 58 disposed through a body 60 of cone 34.
  • the openings 58 are sized to allow movement of the corresponding slips 40 within the openings 58.
  • piston 44 may be actuated linearly along mandrel 32 and against extensions 62 of slips 40 to shift the slips 40 linearly along the corresponding openings 58.
  • the linear motion of slips 40 also causes the slips 40 to move radially outward toward interior surface 38 of casing 24.
  • the slips 40 may comprise engagement surfaces having features 64, e.g. teeth, constructed to securely grip surface 38 when the slips 40 are forced radially outward against casing 24.
  • cone 34 also comprises a plurality of pockets 66 which work in cooperation with corresponding openings 58.
  • the pockets 66 may be formed into or through body 60 of cone 34 to help balance the loading between cone body 60 and casing 24. By selecting the length, width and depth of each pocket 66, the amount of loading acting on the casing 24 and/or body 60 can be controlled. If, for example, the casing 24 is relatively thick, the pockets 66 may be constructed to deliver more loading to the casing 24. If the casing 24 is thinner, however, the pockets 66 may be constructed to deliver more loading to body 60 or to equally balance the loading experienced at casing 24 and at cone body 60. [0021] By way of further explanation, deflection of a uniformly loaded beam will be U shaped.
  • each slip 40 is positioned near L/2 the lower the load applied to the casing 24.
  • the pockets 66 can be appropriately configured and used to adjust the positioning of each slip 40 with respect to this L/2 location and thus to control the amount of loading directed to the casing 24 and/or cone body 60.
  • each opening 58 may be defined by a plurality of cone splines 68 spaced in a longitudinal direction along the sides of each opening 58.
  • Each opening 58 also may be defined by a plurality of ramps 70, e.g. two ramps split by a gap 72, located at an end of the opening 58.
  • the use of two ramps 70 split by gap 72 creates an overall ramp which is less stiff and thus able to incur greater loads without causing plastic deformation of either liner hanger components or casing 24.
  • the gap 72 may be formed by an end mill cutter or other suitable cutter.
  • the slot depth of gap 72 also can be varied to achieve a desired stiffness of the ramps 70 corresponding with each slip 40.
  • each pocket 66 may be located adjacent ramps 70 on opposite side of those ramps 70 relative to the corresponding opening 58 bounded by the ramps 70.
  • the ramps 70 in each corresponding opening 58 are disposed at an angle which forces the corresponding slip 40 in a radially outward direction when the slip 40 is moved linearly along opening 58 and against the corresponding ramps 70.
  • slip 40 may have a ramp engagement end 74 with an angled surface 76 formed at an angle corresponding to the angle of ramps 70 so as to force the slip radially outward as the slip 40 is moved linearly via piston 44 against the ramps 70.
  • Cone splines 68 also may be oriented at an angle matching the angle of ramps 70.
  • each slip 40 also comprises a plurality of slip splines 78.
  • the cone splines 68 are disposed along each opening 58 to receive the slip splines 78 of the corresponding slip 40.
  • the plurality of cone splines 68 may be spaced and oriented to slidably receive the plurality of slip splines 78 therebetween.
  • the plurality of slip splines 78 acting against the corresponding plurality of cone splines 68 serves to distribute the loading along a desired length of each slip 40 when the plurality of slips 40 is actuated against the surrounding surface 38 to support the liner 30.
  • the cone 34 may comprise less than eight, e.g. six or seven, cone splines 68 distributed along the longitudinal side of each opening 58.
  • the corresponding slip 40 received in each opening 58 has a complementary six or seven slip splines 78 for slidable receipt in the cone splines 68.
  • six or seven splines tends to maximize the distribution of loading along each slip 40 because additional, sequential splines tend to take little or no loading.
  • the cone 34 is constructed with a different yield strength than that of the slips 40 and mandrel 32.
  • the cone 34 may be constructed so as to have a yield strength less than that of the slips 40 and mandrel 32, e.g. a yield strength 5-50 KSI (thousand pounds per square inch) lower.
  • the slips 40 may have a yield strength of approximately 125 KSI while the cone 34 has a yield strength of approximately 1 10 KSI.
  • the different yield strengths may be obtained by constructing the components from different materials, e.g. different metals having different yield strengths.
  • a dynamic redistribution of load occurs between the splines 68, 78.
  • a relatively equal distribution of loading can be achieved along the plurality of corresponding splines 68, 78 associated with each opening 58.
  • each group of splines 68, 78 contains splines of different thicknesses.
  • each group of slip splines 78 disposed along a side of the corresponding slip 40 may have at least one slip spline 78 with a thickness 80 greater than the thickness 82 of the other sequential slip splines 78.
  • Figure 6 illustrates a portion of cone 34 having cone splines 68 and ramps 70 arranged along opening 58. The cone splines 68 and ramps 70 are positioned and oriented to receive the slip splines 78 with differing thicknesses 80, 82, as illustrated in Figure 7.
  • a first slip spline 78 (the slip spline 78 closest to engagement end 74) of each slip 40 is thicker than the subsequent slip splines 78 sequentially positioned along each side of the slip 40.
  • the first slip spline 78 may be constructed with greater thickness 80 because in a variety of applications the first slip spline takes more loading than the other slip splines 78.
  • the first slip spline 78 may be twice as thick as the subsequent slip splines 78 although other thickness ratios may be selected with respect to the relative thicknesses 80, 82.
  • the cone splines 68 are spaced to slidably receive the slip splines 78 of different thicknesses, however the cone splines 68 may similarly be constructed with different thicknesses to provide the desired support against the loads experienced by liner hanger 22.
  • the well system 20 may have a variety of configurations for use in many types of wellbores, well applications, or other
  • the liner hanger 22 may be constructed in various sizes and configurations to accommodate different types of liners and liner applications.
  • the size, configuration, and material selected for each of the liner hanger components, e.g. cone 34 and slips 40, may be selected according to the parameters of a given application.
  • actuators 42 may be employed to enable selective linear movement of the slips 40 when the liner hanger 22 is set with respect to the surrounding casing 24.
  • various configurations of slip extension 62, slip retainers 54, push rings 52, and/or other liner hanger components may be adjusted according to the specific conditions of a given application and environment.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (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)
  • Holders For Apparel And Elements Relating To Apparel (AREA)

Abstract

La présente invention concerne une technique qui facilite la construction l'utilisation d'une suspension de colonne perdue capable de mieux répartir la charge. La suspension de colonne perdue est assemblée avec un cône et une pluralité de coins de retenue montés de façon coulissante par rapport au cône. Le cône est construit avec des rampes et des cannelures de cône agencées pour mettre en prise la pluralité de coins de retenue. Les coins de retenue sont construits avec des cannelures de coin de retenue agencées pour mettre en prise les cannelures de cône. L'agencement de rampes et de cannelures permet le mouvement radial des coins de retenue en prise avec une surface environnante, par exemple, une surface de tubage, d'une manière qui distribue la charge.
PCT/US2016/012110 2016-01-05 2016-01-05 Suspension de colonne perdue avec charge radiale équilibrée WO2017119868A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2016/012110 WO2017119868A1 (fr) 2016-01-05 2016-01-05 Suspension de colonne perdue avec charge radiale équilibrée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2016/012110 WO2017119868A1 (fr) 2016-01-05 2016-01-05 Suspension de colonne perdue avec charge radiale équilibrée

Publications (1)

Publication Number Publication Date
WO2017119868A1 true WO2017119868A1 (fr) 2017-07-13

Family

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Family Applications (1)

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PCT/US2016/012110 WO2017119868A1 (fr) 2016-01-05 2016-01-05 Suspension de colonne perdue avec charge radiale équilibrée

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022098533A1 (fr) * 2020-11-03 2022-05-12 Schlumberger Technology Corporation Emballage de coins de retenue à réglage initial amélioré

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4762177A (en) * 1987-07-24 1988-08-09 Hughes Tool Company Slip gripping mechanism with floating cone segments
US4848462A (en) * 1988-05-09 1989-07-18 Lindsey Completion Systems, Inc. Rotatable liner hanger
US6241017B1 (en) * 1998-10-19 2001-06-05 Baker Hughes Incorporated Caged slip system and release methods
US6920927B2 (en) * 2003-05-02 2005-07-26 Weatherford/Lamb, Inc. Method and apparatus for anchoring downhole tools in a wellbore
US20140338892A1 (en) * 2013-05-14 2014-11-20 Baker Hughes Incorporated Slip with Altering Load Distribution Feature

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4762177A (en) * 1987-07-24 1988-08-09 Hughes Tool Company Slip gripping mechanism with floating cone segments
US4848462A (en) * 1988-05-09 1989-07-18 Lindsey Completion Systems, Inc. Rotatable liner hanger
US6241017B1 (en) * 1998-10-19 2001-06-05 Baker Hughes Incorporated Caged slip system and release methods
US6920927B2 (en) * 2003-05-02 2005-07-26 Weatherford/Lamb, Inc. Method and apparatus for anchoring downhole tools in a wellbore
US20140338892A1 (en) * 2013-05-14 2014-11-20 Baker Hughes Incorporated Slip with Altering Load Distribution Feature

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022098533A1 (fr) * 2020-11-03 2022-05-12 Schlumberger Technology Corporation Emballage de coins de retenue à réglage initial amélioré

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