WO2017189568A1 - Pied d'ancrage pour sifflet déviateur hydraulique - Google Patents

Pied d'ancrage pour sifflet déviateur hydraulique Download PDF

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Publication number
WO2017189568A1
WO2017189568A1 PCT/US2017/029405 US2017029405W WO2017189568A1 WO 2017189568 A1 WO2017189568 A1 WO 2017189568A1 US 2017029405 W US2017029405 W US 2017029405W WO 2017189568 A1 WO2017189568 A1 WO 2017189568A1
Authority
WO
WIPO (PCT)
Prior art keywords
slips
slip
assembly
piston
housing
Prior art date
Application number
PCT/US2017/029405
Other languages
English (en)
Inventor
Gregory L. Hern
William A. HERED
Jason L. CULLUM
Original Assignee
Baker Hughes Incorporated
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 Baker Hughes Incorporated filed Critical Baker Hughes Incorporated
Publication of WO2017189568A1 publication Critical patent/WO2017189568A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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 the boreholes or wells
    • E21B23/01—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells for anchoring the tools or the like
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B29/00—Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
    • E21B29/06—Cutting windows, e.g. directional window cutters for whipstock operations
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • E21B7/06—Deflecting the direction of boreholes
    • E21B7/061—Deflecting the direction of boreholes the tool shaft advancing relative to a guide, e.g. a curved tube or a whipstock
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells

Definitions

  • the field of the invention is hydraulic anchor assemblies for whipstocks in borehole use and more particularly anchors that release in a variety of ways, or cock the whipstock or that can be modularly built to optionally add setting capability with setting down weight or be reconfigured to add a hydraulically actuated sealing functionality to the anchor.
  • Whipstocks are long tapered ramps that are secured in a tubular string to guide a mill assembly laterally to make an exit through the tubular wall for the start of a lateral bore.
  • the taper angle is gradual, in the order of about 1-3 degrees.
  • the ramp is typically oriented with a bottom hole assembly so that the ramp faces the direction of the desired lateral.
  • Anchors that hydraulically extend from one side of a whipstock lower end to skew the whipstock are described in US 6843314.
  • a design that uses a nonparallel slip face to the surrounding tubular for skewing the whipstock is described in US 8505651.
  • a non-releasing anchor that sets hydraulically and has the set position locked with a body lock ring is shown in US 5154231.
  • a mechanically actuated whipstock anchor using relative movement of opposed inclined surfaces is shown in US 6360821.
  • a hydraulic whipstock anchor that holds the set and can be released in a variety of ways.
  • One way is to vent trapped hydraulic pressure that holds the slips out and one way that is done is to pull tension and fail a component that lets the hydraulic pressure relieve so that the slips can retract.
  • Another way to slip release is to remotely close a circuit that allows electrical current to heat and break a wire to release a piston whose movement opens a vent port.
  • release of the piston can allow fluids to pass through a port that undermine a mechanical lock ring that holds the slips extended.
  • the slips can be wedged out radially with axial movement of a cone or by radial piston movement with the slips on the piston ends.
  • the anchor design can be modular so that removal of an end cap allows alternative slip setting by setting down weight or the ability to add a packer component to the housing end that is actuated hydraulically with the slips.
  • Cocking of the whipstock top end to an upper part of a horizontal run for a downward casing exit can be accomplished with ramps sloped at different angles that induce a turning moment on the slips to rotate the whipstock body.
  • the slips will be offset along the axis of the whipstock to further increase the turning moment to rotate the whipstock body.
  • the slip assembly can be mounted on an axis that skews with respect to the whipstock body to impart a turning moment to the whipstock body for desired positioning of the top end of the whipstock.
  • a whipstock anchor is hydraulically set and locked in the set position. Release occurs with a pull induced component failure that relieves hydraulic pressure that allows the slips to retract. Release can occur with a remotely actuated circuit that burns a retainer for a piston whose movement opens a vent or initiates a chemical reaction to undermine a lock ring. Movement of a single cone or opposed cones extends the slips. The cone angles being different adds a skew to the slips and positions the top of the whipstock against the tubular top in a horizontal run. A bottom cap is removable to convert to setting by set down weight or to attach a hydraulically operated packer below the slips. Slips can be extended with radial movement of pistons. BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a section view of a locking anchor design with a tensile release
  • FIG. 1 a is the view along line 1 a- 1 a of FIG. 1
  • FIG. lb is an enlarged view of the slips in FIG. 1 showing the taper angle difference
  • FIG. 2 is a section view of an alternative embodiment showing a skew in the anchor body with respect to the whipstock axis;
  • FIG. 2a is the view along line 2a-2a of FIG. 2
  • FIG. 3 is a section view of an embodiment showing opposed cone movement for slip extension
  • FIG. 3 a is the view along line 3a-3a of FIG. 3;
  • FIG. 3b is an outside view of the slip retainer of FIG. 3;
  • FIG. 3c is a detailed section view of the slips in FIG. 3 showing differing opposed taper angles
  • FIG. 4 is a section view of an embodiment that releases with a remote signal that allows a piston to move to release hydraulic pressure
  • FIG. 4a is the view along line 4a-4a of FIG. 4;
  • FIG. 5 is a section view of an embodiment that moves a slip radially with a radially oriented piston and releases with a remote signal that vents hydraulic pressure;
  • FIG. 5a is an outside view of the slips showing a retainer for the moving slips
  • FIG. 6 illustrates a modular hydraulically operated packer that can be mounted to the slip assembly
  • FIG. 7 is a section view of an anchor that is releases with a remote signal that allows a piston to move to release an agent to undermine a body lock ring for anchor release;
  • FIG. 7a is a view along line 7a-7a of FIG. 7.
  • a whipstock 10 has a ramp 12 and an associated hydraulic line 14 that typically is run behind the ramp 12 to protect the line 14 from the advancing window mill that is not shown.
  • a check valve 16 in line 14 allows flow one way into passage 18 to chamber 20 defined by cap 22 secured at thread 24 to housing 26.
  • Cone 32 is sealed with seals 28 and 30 so that built up pressure in chamber 20 moves cone 32 in the direction of arrow 34 toward the housing 26.
  • Two slips 36 are shown at 180 degree spacing although different spacing and number of slips is contemplated.
  • the slips 36 have external carbide or hardened inserts 38 to dig into the surrounding tubular that is not shown to support the whipstock 10.
  • a biasing spring 40 pushes between a respective slip 36 and a retainer 42 that limits the outward travel of each slip 36.
  • a lock ring 44 is moved along ratchet profile 46 as cone 32 moves in the direction of arrow 34 to prevent reverse movement of the cone 32.
  • the lock ring 44 in effect maintains the set of the slips 36 against the surrounding tubular that is not shown.
  • ramp surfaces 48, 50, 140 and 142 have the same slope.
  • Slip surface 144 has a slightly smaller slope than ramp surfaces 48, 50, 140 and 142, and slip surface 146 has a slightly greater slope than ramp surfaces 48, 50, 140 and 142 to put whipstock axis 152 into a cocked position with respect to horizontal axis 52 as schematically illustrates in FIG. lb.
  • the angle difference on opposed slip surfaces 144 and 146 is a degree but larger or even smaller differences are contemplated to skew the slip orientation in opposed directions as between slips with 180 degree spacing.
  • the desired result is a skew is imparted to the whipstock 10 to keep its upper end (not shown) against the inside diameter (ID) of a horizontal pipe for making a downwardly oriented window exit.
  • the slips hardened inserts 38 are parallel to each other but both are skewed with the whipstock axis 152 to impart a rotational moment to whipstock 10 as indicated by arrows 54 and 56.
  • ramps surfaces 48 and 50 will be closer to the top of the whipstock than ramps surfaces 140 and 142 to provide a fulcrum effect to create a greater force to keep the top of the whipstock pushed tighter against the ID of the horizontal pipe.
  • the sloping surfaces 144 and 146 on the slips 36 are parallel to their respective opposing ramp surfaces 48, 140, 50, and 142 on cone 32 and housing 26 however, some angular difference is also contemplated as an option.
  • Hardened inserts 38 are imbedded into slips 36 on either side of retainer 42. Width 148 on one side of slip 36 is greater than width 150 on the other side of slip 36.
  • the tensile force on mandrel 58 increases until a tensile failure occurs at necked down portion 60.
  • the pressure in chamber 20 dissipates and the housing 26 has the ability to move up and away from the set slips 36 so they are no longer wedged against the surrounding tubular.
  • the cone 32 is retained by cap 22 after the tensile failure at 60. It should be noted if the hydraulic system is filled with incompressible fluid the check valve 16 can hold the pressure against the set slips 36 using cone 32, however, the body lock ring 44 insures that the slips 36 cannot back away from the surrounding tubular after the set.
  • FIG. 2 is somewhat different than FIG. 1 in that a single radially moving slip 36 is used and is opposed by segment 62 with hardened or carbide inserts 64.
  • Cone 32 is modified to have a taper only under the single slip 36 whose extension brings the inserts 64 to the surrounding tubular wall.
  • the hardened inserts 38 in slip 36 are parallel to hardened inserts 64 in segment 62, but are at a small angle with respect to whipstock axis 152of the whipstock 10 such that extension of slip 36 until inserts 64 reach the surrounding tubular 180 degrees away will wind up pushing the top end of the whipstock against the surrounding pipe to keep it out of the way of the advancing window mill.
  • Housing 26 is conically shaped below arrows 66 to provide clearance when the bottom of the whipstock 10 is rotated toward the tubing wall.
  • the skew in FIG. 2 can be further enhanced with the orienting of the one slip 36 akin to the manner previously described in the discussion of FIG. lb.
  • FIG. 3 is the same as FIG. 1 with the exception that there are opposed pistons that move on opposite sides of the slips 36.
  • Mandrel 58 that was threaded to housing 26 in FIG. 1 is now slidably mounted after breaking shear pin 68.
  • a lock ring 70 only allows mandrel 58 to move in the direction of arrow 72 with its final position locked in with lock ring 70.
  • cone 32 moves in an opposite direction toward slips 36 and its set position is locked with lock ring 44.
  • Pin 74 extends from housing 26 into slot 76 in mandrel 58 to prevent relative rotation between the two.
  • release occurs with a tensile failure at decked down portion 60 in response to a tensile force on whipstock 10.
  • FIG. 4 the arrangement of the gripping is the same as FIG. 2 in that there is a slip 36 located 180 degrees opposite a segment 62 with hardened or carbide inserts 64.
  • pressure in line 14 goes through check valve 16 and against piston 80 that has a peripheral seal 82.
  • Spring 84 pushes piston 80 away from slip 36 until the spring force is overcome with pressure in line 14.
  • Piston 80 has a through bore 78 blocked by plug 86 that has a seal 88.
  • a battery and signal receiver 90 gets a remote signal to close a circuit which then heats a wire 92 operatively connected to retainer 94 to defeat it which constitutes the trigger so that plug 86 can move and take seal 88 past vent passage 96 to relieve the pressure above piston 80 which in essence allows spring 84 to push piston 80 away from slip 36 to allow removal of the whipstock 10 without well intervention which means avoiding sticking tools in the borehole to accomplish the task.
  • the hardened inserts 38 in slip 36 are parallel to hardened inserts 64 in segment 62, but are at a small angle with respect to whipstock axis 152 of the whipstock 10 such that extension of slip 36 until inserts 64 reach the surrounding tubular 180 degrees away will wind up pushing the top end of the whipstock against the surrounding pipe to keep it out of the way of the advancing window mill.
  • Surface 98 is stationary as the slip 36 is guided at end 100 by a rail or dovetail. In this design the line 14 pressure held by check valve 16 holds the set position of the slip 36.
  • the signal can be sent without well intervention in a variety of known ways such as acoustic, electromagnetic, mud pulse or vibration.
  • a fixed lug retrieval tool that engages the whipstock for whipstock retrieval could mechanically close a circuit that would initiate opening of the trigger.
  • the fixed lug retrieval tool could include a magnet that activates a sensor in the whipstock.
  • Using the fixed lug retrieval tool to initiate pressure release could include running a wire from the whipstock to the battery. That is, a sensor is optional in the anchor. Closing the circuit to active the pressure release could be controlled from the whipstock instead of at the anchor.
  • FIG. 5 uses line 14 and check valve 16 to feed pressure to radially extend pistons 110 that each have hardened or carbide inserts 112. Located 180 degrees opposite are fixed inserts 114, that are parallel to hardened inserts 1 12, but at an angle with respect to whipstock axis 152. There are return springs 116 on each piston 110.
  • the release system in FIG. 5 works the same way as in FIG. 4 in response to a remote signal to vent pressure and allow return springs 116 to retract the pistons 110.
  • the applied line 14 pressure trapped by the check valve 16 holds the set position. Any different amount of pistons 110 can be used and some can be articulated in a 180 degree opposed orientation. As before a retainer 42 limits the extension of the pistons when there is no surrounding tubular present.
  • FIG. 6 is intended to show that cap 22 of FIG. 1 can be removed at thread 24.
  • cone 32 can be converted to set down weight operation against hole bottom.
  • a packer module 120 can be attached at thread 24 to in essence recreate chamber 20 for operation of cone 32 as in FIG. 1 but to also extend a passage for hydraulic pressure to port 122 to drive piston 124 against seal assembly 126 and against fixed surface 128 so that slips 36 can be extended as well as a seal assembly 126.
  • a lock ring 130 holds the set of the seal assembly 126.
  • a tensile force on the whipstock 10 creates a tensile failure at necked down portion 60 to allow release of at least the slips 36.
  • FIG. 7 has a slightly different release system that acts to undermine the lock ring 44.
  • the layout is similar to FIG. 4 with the difference being that actuation of plug 86 by system 90 based on a remote signal moves seal 88 past passage 96 to allow fluid in chamber 130 to reach lock ring 44 and undermine it with chemical attack or an equivalent way.
  • a whipstock anchor that can be hydraulically set and can hold the set position with a check valve on the hydraulic line.
  • a lock ring can hold the set position and release occurs when a tensile force results in tensile failure of a mandrel to release the hydraulic pressure.
  • a release of hydraulic pressure can be remotely actuated with release of a retained plug whose movement vents hydraulic pressure or disables or undermines a lock ring chemically.
  • a single piston can extend a slip with movement against a fixed surface or two pistons can be pushed in opposed directions.
  • Movable slips can be oriented in opposition to each other or a movable slip can be opposite a fixed slip with inserts.
  • Cocking of the whipstock can be accomplished by skewing the housing for the slips with respect to a whipstock axis or skewing the slip axis relative to an aligned whipstock and anchor housing axis.
  • the designs feature simplicity in a hydraulically set anchor for a packer with a resultant economy in manufacturing.
  • a removable cap can be used for hydraulic operation of a piston and with the cap removed for operating the piston with set down weight.
  • a seal module can be secured in place of the end cap to allow setting a packer with the anchor and to release the anchor and the seal assembly when necked down portion 60 is broken.

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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)
  • Earth Drilling (AREA)

Abstract

L'invention concerne un pied d'ancrage pour sifflet déviateur qui est configuré et verrouillé hydrauliquement dans la position configurée. La libération a lieu avec une défaillance d'un élément induite par traction qui soulage la pression hydraulique qui permet aux coins de retenue de se rétracter. La libération peut se produire avec un circuit actionné à distance qui brûle un dispositif de retenue pour un piston dont le mouvement ouvre un évent ou lance une réaction chimique pour sous-caver un anneau de verrouillage. Le mouvement d'un seul cône ou de cônes opposés étend les coins de retenue. Le fait que les angles de cône soient différents (les angles de cône ne doivent pas être forcément différents, il est préférable d'avoir des angles de coins différents) ajoute un désalignement aux coins de retenue et positionne la partie supérieure du sifflet déviateur contre la partie supérieure tubulaire dans un tronçon horizontal. Un capuchon inférieur peut être retiré pour passer à la configuration sous l'effet d'un poids déposé ou pour fixer un packer actionné hydrauliquement au-dessous des coins de retenue. Des coins de retenue peuvent être étendus avec un mouvement radial des pistons.
PCT/US2017/029405 2016-04-26 2017-04-25 Pied d'ancrage pour sifflet déviateur hydraulique WO2017189568A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15/138,816 2016-04-26
US15/138,816 US20170306711A1 (en) 2016-04-26 2016-04-26 Hydraulic Whipstock Anchor

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WO2017189568A1 true WO2017189568A1 (fr) 2017-11-02

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021195031A1 (fr) * 2020-03-25 2021-09-30 Baker Hughes Oilfield Operations Llc Ancrage de sortie de boîtier à système d'activation redondant

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA3153255C (fr) 2014-06-17 2024-01-02 Petrojet Canada Inc. Systemes et methodes de forage hydraulique
CN109899015B (zh) * 2019-02-28 2021-06-15 宝鸡石油机械有限责任公司 集成有内置闸板阀及驱动结构的水下油管悬挂器
US11702888B2 (en) 2020-03-25 2023-07-18 Baker Hughes Oilfield Operations Llc Window mill and whipstock connector for a resource exploration and recovery system
US11162314B2 (en) 2020-03-25 2021-11-02 Baker Hughes Oilfield Operations Llc Casing exit anchor with redundant activation system
US11414943B2 (en) 2020-03-25 2022-08-16 Baker Hughes Oilfield Operations Llc On-demand hydrostatic/hydraulic trigger system
US11421496B1 (en) 2020-03-25 2022-08-23 Baker Hughes Oilfield Operations Llc Mill to whipstock connection system
US11131159B1 (en) * 2020-03-25 2021-09-28 Baker Hughes Oilfield Operations Llc Casing exit anchor with redundant setting system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4530398A (en) * 1982-08-02 1985-07-23 Arrow Oil Tools, Inc. Retrievable well bore packer
US5427179A (en) * 1992-11-19 1995-06-27 Smith International, Inc. Retrievable whipstock
US20030183388A1 (en) * 2002-03-28 2003-10-02 Toulouse Jeffrey E. One trip through tubing window milling apparatus and method
US20070175629A1 (en) * 2006-02-01 2007-08-02 Harris Robert D Downhole/openhole anchor
US20130299160A1 (en) * 2012-05-14 2013-11-14 Charles Lott Wellbore anchoring system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4530398A (en) * 1982-08-02 1985-07-23 Arrow Oil Tools, Inc. Retrievable well bore packer
US5427179A (en) * 1992-11-19 1995-06-27 Smith International, Inc. Retrievable whipstock
US20030183388A1 (en) * 2002-03-28 2003-10-02 Toulouse Jeffrey E. One trip through tubing window milling apparatus and method
US20070175629A1 (en) * 2006-02-01 2007-08-02 Harris Robert D Downhole/openhole anchor
US20130299160A1 (en) * 2012-05-14 2013-11-14 Charles Lott Wellbore anchoring system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021195031A1 (fr) * 2020-03-25 2021-09-30 Baker Hughes Oilfield Operations Llc Ancrage de sortie de boîtier à système d'activation redondant
GB2609138A (en) * 2020-03-25 2023-01-25 Baker Hughes Oilfield Operations Llc Casing exit anchor with redundant activation system
GB2609138B (en) * 2020-03-25 2024-03-27 Baker Hughes Oilfield Operations Llc Casing exit anchor with redundant activation system

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