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WO2015187132A1 - Ancre de fond de puits à plusieurs étages - Google Patents

Ancre de fond de puits à plusieurs étages Download PDF

Info

Publication number
WO2015187132A1
WO2015187132A1 PCT/US2014/040717 US2014040717W WO2015187132A1 WO 2015187132 A1 WO2015187132 A1 WO 2015187132A1 US 2014040717 W US2014040717 W US 2014040717W WO 2015187132 A1 WO2015187132 A1 WO 2015187132A1
Authority
WO
WIPO (PCT)
Prior art keywords
actuator
slip
wedge surface
downhole
wedge
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/US2014/040717
Other languages
English (en)
Inventor
Adan Hernandez Herrera
Nikhil M. KARTHA
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.)
Halliburton Energy Services Inc
Original Assignee
Halliburton Energy Services 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 Halliburton Energy Services Inc filed Critical Halliburton Energy Services Inc
Priority to US15/308,798 priority Critical patent/US20170183927A1/en
Priority to PCT/US2014/040717 priority patent/WO2015187132A1/fr
Publication of WO2015187132A1 publication Critical patent/WO2015187132A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
    • 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
    • E21B33/12—Packers; Plugs
    • E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
    • E21B33/1291—Packers; Plugs with mechanical slips for hooking into the casing anchor set by wedge or cam in combination with frictional effect, using so-called drag-blocks

Definitions

  • the embodiments disclosed herein relate generally to downhole tools for oil and gas wells, and, in particular to devices and methods for anchoring the tools in a wellbore casing section.
  • Downhole tools are often used to provide operations in oil and gas wells.
  • Wirelines or slicklines are used to position downhole tools at a desired location in the wellbore.
  • the desired location in the wellbore may be either cased or uncased, depending on the nature of the operation to be performed by the tool.
  • many wireline or slickline tools must be anchored in the wellbore to hold them in the correction wellbore location. This means the anchor must be able to resist not only unwanted movement of the tool in the axial direction, but also rotational movement caused by torque on the tool during the operation.
  • FIG. 1 is a diagram illustrating a downhole anchoring system according to an embodiment
  • FIG. 2 is a diagram illustrating a downhole anchor according to an embodiment with the slip retracted
  • FIG. 3 is a diagram illustrating a downhole anchor according to an embodiment with the slip actuated by a first actuator
  • FIG. 4 is a diagram illustrating a downhole anchor according to an embodiment with the slip actuated by a second actuator.
  • FIG. 1 shows an anchoring system 100 according to an embodiment of the disclosure.
  • Wellbore 102 of an oil and gas well is lined with casing 104.
  • a wireline truck 106 may be used to deploy activation tool 108 at a desired location within wellbore 102 from wireline 110.
  • An anchor according to an embodiment may also be deployed by a slickline or other method to position the anchor at a desired location in the wellbore.
  • An activation tool can be any type of downhole tool that is activated downhole to perform a desired operation.
  • actuation tools include any number of well intervention tools, such, as tools for setting packers, washing tools, milling tools, data gathering or sampling tools, and so forth.
  • any downhole tool that requires anchoring may be used in embodiments of the system.
  • one or more anchors may be provided as necessary to maintain the activation tool in place.
  • more than one activation tool may be included in the work string.
  • a single anchor 112 is provided to hold activation tool 108 in place.
  • Anchor 1 12 includes radially extending slips 1 14 to engage the inner surface of wellbore casing 104 with sufficient force to hold activation tool 108 in place.
  • FIG. 2 is a diagram showing an anchor according to an embodiment of the disclosure.
  • the anchor 112 includes a tool body or spine 1 16, a slip 1 14, and an actuator assembly 118 including a first actuator 120, and a second actuator 122.
  • the slip 1 14 and actuator assembly 1 18 may be mounted, directly or indirectly, on tool body 116 and may move relative to it.
  • the second actuator 122 is housed inside the first actuator 120.
  • the tool body 116 allows relative movement between the slip 1 14 and the first actuator 120 in an axial direction along the centerhne 124 of the tool.
  • An anchor 1 12 according to an implementation of the disclosure may include multiple slips and actuators arranged circumferentially around the tool body 116.
  • the slips and actuators may also be arranged uniformly around the tool body 1 16 so that the anchor 112 self-centers when deployed in the wellbore.
  • the tool body 116 including the slips and actuators, may also be housed in a housing that presents a smooth surface suitable for running down the wellbore without hanging or snagging.
  • the slip 114 may be connected to the tool body 1 16 by slip holding linkage 126, which comprises a spring, such as a bow spring, to hold the slip 1 14 in position when not deployed.
  • FIG. 2 depicts an implementation of the anchor 1 12 in the run-in-hole (RIH) arrangement, referred to as position 0 in the figure.
  • the slip 1 14 and actuator assembly 1 18 components are contained within a downhole tool housing, not shown.
  • the slip holding linkage 126 allows the slip 114 to move radially outward from the centerhne 124 when the anchor 112 is deployed. This linkage system also allows the slip 1 14 to move back to position 0 when the well operator decides to release the anchor 112 and re-position or remove it from the wellbore.
  • the bow springs may assist in disengaging the slip 114 from the wellbore casing after deployment and moving back to position 0.
  • the slips may be connected to the slip holding linkage 126 by a hinge to allow the casing engagement surface 128 to remain parallel to the centerhne 124 as it is deployed and released.
  • the slip casing engagement surface 128 is suitable to engage the anchor 1 12 with the wellbore casing, and may have a textured surface, such as grooves or teeth, to help hold the anchor 1 12 in place without slipping when deployed. Securely holding the anchor 1 12 allows well operators to perform operations that require, for example, pushing against the anchor 112 for mechanical interventions in the wellbore.
  • the first actuator 120 may have a wedge profile, such as that shown in FIG. 2.
  • the first actuator 120 includes a first wedge surface 130.
  • the first wedge surface 130 is arranged at an angle less than ninety degrees relative to a normal to the centerhne 124 of the tool. The amount of angle may be selected to determine the desired setting force required to deploy the anchor 112 in the wellbore. This allows multiple output forces within the same system.
  • the first wedge surface 130 corresponds to a similar slip wedge surface 134 provided on the side of the slip 114.
  • To deploy the anchor the first actuator 120 moves axially relative to the slip 114 in the direction of movement 132 shown in FIG. 2.
  • the slip 1 14 has moved a first radial distance Rl, which is the furthest expansion obtainable by the relative movement between the slip 1 14 and the first actuator 120.
  • the slip 1 14 may press against the slip support surface 136 of the first actuator 120.
  • the second actuator 122 is now actuated.
  • the second actuator 122 is extended out from the first actuator 120 by, for example, internal wedges, linkages, or cams actin in tandem with the tool body 116 or housing.
  • the second actuator 122 is rotated out of the first actuator 120 on a hinge, though other actuation mechanisms may be used.
  • the second actuator 122 also may have a wedge profile and include a second wedge surface 138 that corresponds to the slip wedge surface 134. Additional relative movement between the actuator assembly 1 18 and the slip in the indicated direction of movement 132 causes the wedge surface 134 of the slip 1 14 to mate with the second wedge surface 138 and, subsequently, push the slip 114 outward from the first radial distance Rl .
  • This allows an anchor according to an embodiment of the disclosure to obtain a higher expansion ratio while maintaining the tool envelope than it would have with only the first actuator 120.
  • Embodiments of the disclosure also allow the wedge angles of the slip and actuators to vary to determine the setting force and to allow a single setting movement. In other embodiments, the mating surfaces of the second wedge to slip could be made to have the same, or different, setting forces depending on the application.
  • FIG. 4 is a diagram showing an anchor 1 12 according to an embodiment at position 2, in which the second actuator 122 is fully actuated, and the slip has reached its maximum expansion radius R2.
  • the slip 114 rests against second slip support surface 140 on the outer portion of the second actuator 122.
  • the anchor would be fully deployed in the wellbore at its highest expansion ratio.
  • This allows a multistage slip engagement, which may provide a wider range of setting than mechanisms having fixed expansion ratios, which may be limited by the actuator height and slope of the wedge surface. It may also allow embodiments of the anchor to latch onto a wide range of wellbore casing sizes while maintaining the envelope of the outer diameter (OD) of the tool and providing a larger engagement envelope.
  • the anchor 1 12 may be unlatched from the wellbore casing by moving the actuator assembly 118 axially away from the slip in the opposite of the direction of movement shown in the FIGS. 2 - 4.
  • the bow springs, or similar mechanisms cause the slip to retract radially toward the downhole tool centerline 124 until it reaches position 0, shown in FIG. 2.
  • the anchor 1 12 may be repositioned or removed from the wellbore.
  • a method is provided to anchor a downhole tool in a wellbore.
  • the method may begin by providing an anchor having at least one slip and a multistage an actuator assembly, including a first and a second actuator contained in the first actuator, within a housing.
  • the downhole tool may be initially arranged as shown in, for example, FIG. 2.
  • the downhole tool may be then positioned in the wellbore at a desired location and the first actuator actuated by the relative axial movement of the slip with respect to the actuator assembly.
  • the slip may be moved radially outward from the tool centerline by mating the wedge profiles of the slip and the first actuator until the slip reaches a first radial distance, such as shown in the example embodiment in FIG. 3.
  • the relative motion of the slip toward the actuator assembly may also actuate the second actuator by causing the second actuator to move radially outward from the first actuator and present a second wedge surface to the slip.
  • the slip may then be moved radially to a second radial distance by the relative movement of the slip and the actuator assembly, as shown in FIG. 4.
  • the slip When the anchor is to be detached from the wellbore casing, the slip may be moved away from the actuator assembly in the axial direction, reversing the steps above, until the anchor again reaches position 0, shown in FIG. 2. It may then be removed or repositioned in the wellbore.
  • a downhole anchoring apparatus includes a slip having a wedge surface, a linkage connecting the slip to a first section of a tool body, a first actuator having a wedge surface corresponding to the slip wedge surface, and a second actuator having a wedge surface corresponding to the wedge surface of the slip.
  • the downhole anchoring apparatus may further comprise any one of the following features individually or any two or more of these features in combination: (a) a slip support surface located at a first radial distance from a centerline of the downhole anchoring apparatus, (b) a slip support surface located at a second radial distance from the centerline of the downhole anchoring apparatus, the second radial distance being less than or equal to the first radial distance when the second actuator is not actuated or engaged and being greater than the first radial distance when the second actuator is engaged, (c) a wedge angle that is different than a wedge angle of the second actuator wedge surface, (d) wherein the second actuator is positioned inside the first actuator when the second actuator is not engaged, (e) wherein the linkage comprises a spring, and (f) wherein the second actuator is engaged by the relative movement between the slip and the second actuator.
  • a method for anchoring downhole comprises the steps of positioning a downhole tool in a wellbore, the downhole tool including a slip and a first actuator, and moving the slip along a centerline of the downhole tool toward the first actuator until a wedge surface of the slip mates with a wedge surface of the first actuator. Once the wedge surface of the slip is in contact with the wedge surface of the first actuator, moving the slip further along the centerline so that the wedge surface of the slip slides against the wedge surface of the first actuator, causing the slip to move radially outward from the centerline to a first expansion radius.
  • the method may include actuating a second actuator having a wedge surface corresponding to the wedge surface of the slip, moving the slip further along the centerline and toward the second actuator until the wedge surface of the second actuator mates with the wedge surface of the slip. Once the wedge surface of the slip is in contact with the wedge surface of the second actuator, moving the slip further along the centerline, so that the wedge surface of the slip slides against the wedge surface of the second actuator, causing the slip to move radially outward from the centerline to a second expansion radius.
  • the method may further comprise any one of the following features individually or any two or more of these features in combination: (a) wherein moving the slip further along the centerline and toward the second actuator until the wedge surface of the second actuator mates with the wedge surface of the slip further comprises moving the slip along a slip supporting surface of the first actuator, (b) wherein a wedge angle of the first actuator is different from a wedge angle of the second actuator to determine force control for setting the slip against a wellbore casing, (c) wherein actuating a second actuator further comprises moving the second actuator out of a location within the first actuator, and (e) wherein actuating a second actuator further comprises locking the second actuator in place once actuated.
  • a system for anchoring downhole tools in a wellbore may include a tool body that fits within a wellbore casing, a slip having a wedge surface, a linkage connecting the slip to the tool body, a first actuator having a wedge surface corresponding to the slip wedge surface, and a second actuator having a wedge surface corresponding to the wedge surface of the slip.
  • the system may further comprise any one of the following features individually or any two or more of these features in combination: (a) wherein the first actuator comprises a slip support surface located at a first radial distance from a centerline of the downhole anchoring apparatus, (b) wherein the second actuator comprises a slip support surface located at a second radial distance from the centerline of the downhole anchoring apparatus, the second radial distance being less than or equal to the first radial distance when the second actuator is not engaged and being greater than the first radial distance when the second actuator is engaged, (c) wherein the wedge surface of the first actuator comprises a wedge angle that is different than a wedge angle of the second actuator wedge surface, (d) wherein the second actuator is positioned inside the first actuator when the second actuator is not engaged, (e) wherein the linkage comprises a spring, (f) wherein the second actuator is engaged by the relative movement between the slip and the second actuator, and (g) wherein the first actuator comprises a slip support surface located at a first radial distance from a center

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  • 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)
  • Piles And Underground Anchors (AREA)

Abstract

L'invention concerne un appareil d'ancrage de fond de trou destiné à être utilisé dans un outil de fond de trou. Selon un mode de réalisation donné à titre d'exemple, l'invention concerne un système permettant d'ancrer des outils de fond de trou dans un puits de forage. Le système peut comprendre un corps d'outil qui s'adapte dans un tubage de puits de forage, un coin de retenue ayant une surface cunéiforme, une liaison reliant le coin de retenue au corps d'outil, et un ensemble actionneur. L'ensemble actionneur peut comprendre un premier actionneur comportant une surface cunéiforme correspondant à la surface cunéiforme du coin de retenue et un second actionneur comportant une surface cunéiforme correspondant à la surface cunéiforme du coin de retenue.
PCT/US2014/040717 2014-06-03 2014-06-03 Ancre de fond de puits à plusieurs étages Ceased WO2015187132A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US15/308,798 US20170183927A1 (en) 2014-06-03 2014-06-03 Multistage downhole anchor
PCT/US2014/040717 WO2015187132A1 (fr) 2014-06-03 2014-06-03 Ancre de fond de puits à plusieurs étages

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2014/040717 WO2015187132A1 (fr) 2014-06-03 2014-06-03 Ancre de fond de puits à plusieurs étages

Publications (1)

Publication Number Publication Date
WO2015187132A1 true WO2015187132A1 (fr) 2015-12-10

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Family Applications (1)

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PCT/US2014/040717 Ceased WO2015187132A1 (fr) 2014-06-03 2014-06-03 Ancre de fond de puits à plusieurs étages

Country Status (2)

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US (1) US20170183927A1 (fr)
WO (1) WO2015187132A1 (fr)

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WO2015094317A1 (fr) * 2013-12-20 2015-06-25 Halliburton Energy Services, Inc. Outil d'ancrage à haute expansion radiale
US12305461B2 (en) * 2022-11-17 2025-05-20 Weatherford Technology Holdings, Llc Linkage slip assembly for higher expansion on downhole tool

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Also Published As

Publication number Publication date
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