WO2015130419A1 - Coin grippeur de forage facile d'utilisation, doté de matières dégradables - Google Patents

Coin grippeur de forage facile d'utilisation, doté de matières dégradables Download PDF

Info

Publication number
WO2015130419A1
WO2015130419A1 PCT/US2015/012847 US2015012847W WO2015130419A1 WO 2015130419 A1 WO2015130419 A1 WO 2015130419A1 US 2015012847 W US2015012847 W US 2015012847W WO 2015130419 A1 WO2015130419 A1 WO 2015130419A1
Authority
WO
WIPO (PCT)
Prior art keywords
inner body
body portion
downhole tool
outer contact
slip element
Prior art date
Application number
PCT/US2015/012847
Other languages
English (en)
Inventor
Richard Yingqing Xu
Zhiyue Xu
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
Priority claimed from US14/189,214 external-priority patent/US9518442B2/en
Application filed by Baker Hughes Incorporated filed Critical Baker Hughes Incorporated
Priority to AU2015223489A priority Critical patent/AU2015223489B2/en
Priority to CA2938955A priority patent/CA2938955A1/fr
Publication of WO2015130419A1 publication Critical patent/WO2015130419A1/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
    • E21B33/10—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

Definitions

  • the invention relates generally to the design of slip elements that are used in gripping systems for downhole tools.
  • Numerous downhole tools incorporate gripping systems that use one or more slips.
  • the slips are moved radially outwardly against a surrounding tubular member in order to resist axial or torsional forces, or both.
  • slips are set to securely anchor a downhole tool in place within a surrounding tubular member.
  • a slip may be set to merely resist axial or torsional movement.
  • Downhole tools that incorporate gripping systems that use slips include, but are not limited to, packers, anchors, plugs, setting tools, bridge plugs, locks and fishing tools.
  • Plugs for example, have a plug body with slip elements that can be selectively moved radially outwardly to bitingly engage a surrounding tubular member.
  • One type of plug is described in U.S. Patent No. 6,167,963 issued to McMahan et al. That patent is owned by the assignee of the present application and is incorporated herein by reference.
  • the present invention provides a design for a downhole tool wherein the slip elements of the gripping system include an inner body portion that is substantially formed of a material that is degradable by dissolution in response to a dissolving fluid and a hardened, resilient, radially outer contact portion.
  • the outer contact portion is substantially formed of a hardened material, such as cast iron, that is shaped to provide for biting into a surrounding tubular member.
  • the outer contact portion extends from the upper end of the slip element to the lower end of the slip element.
  • the outer contact portion includes a plurality of openings that function as stress risers.
  • the inner body portion is substantially formed of a material that is dissolvable in response to a dissolving agent.
  • the dissolvable material forming the inner body portion comprises magnesium-based composite powder compact.
  • the dissolving agent may be potassium chloride (kcl).
  • the outer contact portion is formed of a material that either does not dissolve away in response to the dissolving agent or which dissolves at a significantly slower dissolution rate than that of the inner body portions.
  • the slip inserts are cast within a surrounding molding to create a slip ring which can then be disposed onto the setting cone of the downhole tool.
  • the molding is a phenolic material which provides a laminate covering for the slip elements that protects the dissolvable material against premature dissolution.
  • the downhole tool is disposed into a flowbore and then set.
  • a dissolving agent is used to dissolve away the inner body portions of the slip elements, thereby destroying the integrity of the gripping system of the tool.
  • a milling device is used to expose the dissolvable inner body portions to the dissolving agent.
  • the molding of the slip ring is ruptured by the mill, which exposes the dissolvable material forming the inner body portions to wellbore fluid which contains the dissolving agent.
  • the dissolving agent dissolves away the inner body portions, leaving the outer contact portions of the slip elements.
  • the presence of openings disposed through the outer contact portions assists in disintegration of the outer contact portions into smaller component parts via operation of the milling device.
  • the outer contact portions, or portions thereof, and other components of the downhole tool may be circulated out of the wellbore via fluid returns.
  • removal of a slip member, including the outer contact portion and the inner body portions is done through degradation and dissolution when the slip member comes into contact with a dissolving agent.
  • a dissolving agent is introduced into the wellbore and is brought into contact with the inner body portions.
  • the inner body portions are either not covered by a laminate or have openings disposed through the laminate that permits the dissolving agent to contact the inner body portions.
  • Figure 1 is an isometric view of an exemplary downhole tool constructed in accordance with the present invention.
  • Figure 2 is an isometric view of an exemplary slip element which is used with the tool shown in Figure 1.
  • Figure 3 is an isometric view of the exemplary outer contact portion of the slip element of Figure 2.
  • Figure 4 is an isometric view of the exemplary inner body portion of the slip element of Figure 2.
  • Figure 5 is an isometric view of an exemplary alternative outer contact portion of the slip element in accordance with the present invention.
  • Figure 6 is an isometric view of an exemplary slip ring which incorporates slip elements constructed in accordance with the present invention.
  • Figure 7 is a one-quarter side cross-sectional view depicting an exemplary downhole tool in accordance with the present invention secured within a surrounding tubular.
  • Figure 8 is a one-quarter side cross-sectional view depicting removal by milling of an exemplary downhole tool from the surrounding tubular in accordance with the present invention.
  • Figure 9 is a chart illustrating exemplary dissolution rates of different compounds.
  • Figure 10 is cross-sectional schematic depiction of an integrally-formed slip element in accordance with the present invention.
  • Figure 11 is a side, cross-sectional view of an alternative exemplary slip element constructed in accordance with the present invention.
  • FIG. 1 depicts an exemplary downhole tool 10 constructed in accordance with the present invention.
  • the tool 10 can be any of a class of devices that use radially moveable slip elements within a gripping system that resists axial or torsional forces.
  • the downhole tools may include packers, anchors, plugs, setting tools, bridge plugs, locks and fishing tools.
  • the downhole tool 10 includes a setting cone 12 which is generally cylindrical.
  • the outer radial surface 14 of the setting cone 12 includes a plurality of angled ramps 16 which are separated by guides 18.
  • a slip element 20, constructed in accordance with the present invention, is located upon each of the ramps 16.
  • the slip elements 20 are cast within a surrounding molding 21, which is best seen in Figure 6.
  • the molding 21 is formed of a phenolic resin and is cast in an annular ring shape having sheaths 23.
  • the sheaths 23 each encase one of the slip elements 20.
  • the molding 21 forms a slip ring which, as Figure 1 illustrates, is disposed onto the setting cone 12.
  • the slip elements 20 are moveable upon the ramps 16 of the setting cone 12 between the retracted, unset position shown in Figure 1 and a set position, wherein the slip elements 20 are moved upon the ramps 16, in a manner known in the art, radially outwardly with respect to the setting cone 12. In the set position, the slip elements 20 of the downhole tool 10 are brought into engagement with a surrounding tubular member.
  • the slip element 20 has a slip body which includes a radially inner body portion 22 and an outer contact portion 24.
  • the inner body portion 22 is formed of a material that is substantially dissolvable in response to a dissolving agent.
  • the inner body portion 22 is formed of magnesium-based composite powder compact.
  • the inner body portion 22 is formed of an aluminum-based or iron-based composite material.
  • the magnesium, aluminum and iron-based composite materials may be a powder compact, a casting, a forging, an extruded component, or a laser additive 3D printed structure.
  • Figure 4 illustrates the inner body portion 22 apart from other components.
  • the inner body portion 22 is generally wedge shaped.
  • the inner body portion 22 may be formed by high-pressure compression at high temperatures. Thereafter, the part is shaped by known mechanical processes.
  • the dissolving agent may comprise various brines or acids often used in an oil or gas well.
  • the brines include, but are not limited to, potassium chloride (kcl), sodium chloride (NaCl) and calcium chloride/calcium bromine (Ca2Cl/CaBr2).
  • the acids include, but are not limited to, hydrogen chloride, acetic acid and formic acid.
  • the dissolving agent is a solution that includes from about 2% to about 5% potassium chloride. In a particularly preferred embodiment, the dissolving agent is a solution that includes about 3% potassium chloride.
  • the inner body portions 22 are entirely covered by the phenolic material forming the molding 21.
  • the contact surfaces 26 of the outer contact portions 24 may extend radially outside of the sheaths 23. This material acts as a laminate that separates the dissolvable material forming the inner body portion 22 from surrounding fluids which might contain one of more agents capable of dissolving the body portion 22.
  • Figure 3 depicts the outer contact portion 24 apart from the body portion 22.
  • the contact surface 26 of the contact portion preferably includes stepped wickers 28 formed thereupon to create a biting engagement with a surrounding tubular member.
  • the outer contact portion 24 is preferably formed of a hardened material that is suitable for creating a biting engagement into a surrounding tubular or proximate metallic surface.
  • the outer contact portion 24 is formed of cast iron.
  • the outer contact portion 24 is substantially non-dissolvable by the dissolving agent that is used to dissolve the inner body portions 22.
  • the outer contact portion 24 has a dissolution rate that is slower than that of the dissolvable material making up the inner body portion 22.
  • the outer contact portion 24 has a dissolution rate that is significantly slower than that of the inner body portion 22.
  • a significantly slower rate of dissolution, as defined herein, is a dissolution rate that is more than ten times slower.
  • Figure 9 illustrates the dissolution of coupons of various materials over time in response to a dissolving agent.
  • Disintegration (dissolution) of the coupon (in inches) is plotted against time in hours.
  • Line 31 is representative of the dissolution rate of an aluminum-magnesium alloy.
  • Line 33 is representative of the dissolution rate of a magnesium-tungsten alloy.
  • Line 35 is representative of the dissolution rate of a magnesium-iron alloy.
  • Line 37 represents the dissolution rate of magnesium-nickel alloy.
  • an aluminum- magnesium alloy has a faster dissolution rate than that of magnesium-tungsten, magnesium- iron or magnesium-nickel.
  • the outer contact portion 24 can be formed of a material that has a slower dissolution rate than that of the material making up the inner body portion 22. Therefore, the inner body portion 22 might be made up of, for example, magnesium-iron alloy if the outer body portion 24 is made up of magnesium-nickel alloy.
  • openings 30 are preferably formed through the outer contact portion 24.
  • the openings 30 introduce points of weakness in the structure of the portion 24. Thus, they serve as stress risers which assist the outer contact portion 24 in disintegration during removal of the downhole tool 10 by drilling.
  • Figure 6 depicts an alternative embodiment for an outer contact portion 24' which has a similar construction to the outer contact portion 24. However, the openings 30' are in the form of elongated slots.
  • the contact portion 24 (or 24') preferably extends from the upper end 32 to the lower end 34 of the slip element 20.
  • the outer contact portion 24 (or 24') is preferably affixed to the body portion 22 using a suitable adhesive.
  • FIG. 10 is a schematic cross- section of an exemplary slip element 20" that is made up of an inner body portion 22" and an outer contact portion 24". Because the slip element 20" is integrally formed, the inner body portion 22" and the outer contact portion 24" are interconnected by a transition gradient zone 23. Layers 25a, 25b, 25c, 25d and 25e are overlayed upon each other. Collectively, the layers 25a, 25b, 25c, 25d and 25e make up a transition gradient zone 27 that interconnects the inner body portion 22" and the outer contact portion 24".
  • the slip element 20" may be manufactured by use of 3-D laser printing systems of a type known in the art.
  • multiple layers of material are deposited onto a substrate that corresponds to the outer contact portion 24".
  • the layers 25a, 25b, 25c, 25d and 25e contain various proportions of the materials making up the outer body portion and the inner body portion.
  • Figure 10 shows a layer 25a having a composition that is about 75% of the material used to form the outer contact portion 24" and about 25% of the material used to form the inner body portion 22".
  • Layer 25b has a composition that is about 60% of the material forming the outer contact portion 24" and about 40% of the material forming the inner body portion 22".
  • Layer 25c has a composition that is about 50% of outer contact portion material and about 50% of inner body portion material.
  • Layer 25d is made up of about 60% of inner body portion material and about 40% of outer contact portion material.
  • Layer 25e is made up of about 75% inner body portion material and about 25% of outer contact portion material.
  • the transition gradient zone 27 serves to transition the material of the slip member 20" from one to the other in a graded manner.
  • Figure 10 is not to scale or in proportion as it is for illustrative purposes only. According to particular embodiments, the transition gradient zone 27 may have an actual thickness that is from about 10 microns to about 1000 microns.
  • the tool 10 is run into a flowbore and then moved from its unset position to a set position, in a manner known in the art.
  • the outer contact portions 24 (or 24') of the slip elements 20 engagingly contact the surrounding tubular member.
  • a drilling or milling device When it is desired to remove the tool 10 from the flowbore, a drilling or milling device, of a type known in the art, contacts the tool 10 and begins to destroy it by grinding action.
  • Figure 7 illustrates the tool 10 having been set within a surrounding tubular member 36 such that the wickers 28 of the slip elements 20 (one shown) are set into the interior surface 38 of the tubular member 36 in an engaging contact.
  • a milling device 40 is disposed within the tubular member 36 and moved in the direction of arrow 42 through flowbore 44 toward engagement with the upper end 46 of plug 10. As Figure 8 shows, the milling device 40 then engages and begins to mill away or remove the upper end 46 of the downhole tool 10.
  • the setting cone 12 is abraded away.
  • the phenolic material forming the slip ring molding 21 is milled through, as depicted, thereby exposing the inner body portions 22 to fluid within the flowbore 44.
  • Dissolving agent is present in the fluid within the flowbore 44 and acts to dissolve the inner body portions 22 within the wellbore fluid. It is noted that potassium chloride in solution is typically present in conventional drilling fluids.
  • the milling tool 40 will mill away the outer contact portions 24, and rupture the outer contact portions 24 into smaller component pieces due to the pattern of openings 30 which are disposed through the outer contact portions 24.
  • the design of the slip inserts 20 will permit the downhole tool 10 to be rapidly removed from the flowbore 44. In addition, a number of the components of the tool 10 can be more easily circulated out of the flowbore 44.
  • An alternative embodiment of the invention features a slip element (50 in Figure 11) which does not require milling or physical abrasion of the slip element in order to destroy the slip element.
  • Figure 11 illustrates the slip element 50 in a set position within tubular member 36. Except where indicated to the contrary, the slip element 50 is constructed and operates in the same manner as the slip element 20 described earlier. Openings 52 are disposed through the molding 21 and allow for fluids in the flowbore 44 to be in fluid communication with the inner body portion 22 of the slip member 50. In alternative embodiments, some or all of the molding 21 is removed from surrounding the inner body portion 22.
  • a dissolving agent is circulated into the flowbore 44 proximate the slip element 50 and will dissolve away the inner body portion 22. This will destroy the integrity of the slip element 50 and permit a downhole tool incorporating the slip element 50 to be released from engagement from the surrounding tubular 36.

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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)
  • Drilling Tools (AREA)
  • Fishing Rods (AREA)

Abstract

Éléments formant coins grippeurs pour outil de fond, comprenant une partie formant corps interne qui est sensiblement constituée d'un matériau dégradable par dissolution en réaction à un fluide de dissolution, et une partie de contact radialement extérieure trempée et résiliente. La partie formant corps interne peut être constituée de magnésium, d'aluminium ou de poudre à base de fer.
PCT/US2015/012847 2014-02-25 2015-01-26 Coin grippeur de forage facile d'utilisation, doté de matières dégradables WO2015130419A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2015223489A AU2015223489B2 (en) 2014-02-25 2015-01-26 Easy drill slip with degradable materials
CA2938955A CA2938955A1 (fr) 2014-02-25 2015-01-26 Coin grippeur de forage facile d'utilisation, dote de matieres degradables

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14/189,214 2014-02-25
US14/189,214 US9518442B2 (en) 2011-05-19 2014-02-25 Easy drill slip with degradable materials

Publications (1)

Publication Number Publication Date
WO2015130419A1 true WO2015130419A1 (fr) 2015-09-03

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ID=54009503

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2015/012847 WO2015130419A1 (fr) 2014-02-25 2015-01-26 Coin grippeur de forage facile d'utilisation, doté de matières dégradables

Country Status (4)

Country Link
AR (1) AR099401A1 (fr)
AU (1) AU2015223489B2 (fr)
CA (1) CA2938955A1 (fr)
WO (1) WO2015130419A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022046866A1 (fr) * 2020-08-25 2022-03-03 Saudi Arabian Oil Company Ensemble composite de synthèse à dissolution contrôlable
US20220251914A1 (en) * 2021-02-08 2022-08-11 Halliburton Energy Services, Inc. High-Expansion Anchor Slip Assembly For Well Tool
US20220251915A1 (en) * 2021-02-09 2022-08-11 Halliburton Energy Services, Inc. Anchor Slip Assembly With Independently Deployable Wedges
US11867012B2 (en) 2021-12-06 2024-01-09 Saudi Arabian Oil Company Gauge cutter and sampler apparatus

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070181224A1 (en) * 2006-02-09 2007-08-09 Schlumberger Technology Corporation Degradable Compositions, Apparatus Comprising Same, and Method of Use
US20100132960A1 (en) * 2004-02-27 2010-06-03 Smith International, Inc. Drillable bridge plug for high pressure and high temperature environments
US20110132621A1 (en) * 2009-12-08 2011-06-09 Baker Hughes Incorporated Multi-Component Disappearing Tripping Ball and Method for Making the Same
US20120292053A1 (en) * 2011-05-19 2012-11-22 Baker Hughes Incorporated Easy Drill Slip with Degradable Materials
WO2013184185A1 (fr) * 2012-06-08 2013-12-12 Halliburton Energy Services, Inc. Procédés de dépose d'un dispositif d'isolation de forage en utilisant une corrosion galvanique

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100132960A1 (en) * 2004-02-27 2010-06-03 Smith International, Inc. Drillable bridge plug for high pressure and high temperature environments
US20070181224A1 (en) * 2006-02-09 2007-08-09 Schlumberger Technology Corporation Degradable Compositions, Apparatus Comprising Same, and Method of Use
US20110132621A1 (en) * 2009-12-08 2011-06-09 Baker Hughes Incorporated Multi-Component Disappearing Tripping Ball and Method for Making the Same
US20120292053A1 (en) * 2011-05-19 2012-11-22 Baker Hughes Incorporated Easy Drill Slip with Degradable Materials
WO2013184185A1 (fr) * 2012-06-08 2013-12-12 Halliburton Energy Services, Inc. Procédés de dépose d'un dispositif d'isolation de forage en utilisant une corrosion galvanique

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022046866A1 (fr) * 2020-08-25 2022-03-03 Saudi Arabian Oil Company Ensemble composite de synthèse à dissolution contrôlable
US11454082B2 (en) 2020-08-25 2022-09-27 Saudi Arabian Oil Company Engineered composite assembly with controllable dissolution
US20220251914A1 (en) * 2021-02-08 2022-08-11 Halliburton Energy Services, Inc. High-Expansion Anchor Slip Assembly For Well Tool
US11428060B1 (en) * 2021-02-08 2022-08-30 Halliburton Energy Services, Inc. High-expansion anchor slip assembly for well tool
US20220251915A1 (en) * 2021-02-09 2022-08-11 Halliburton Energy Services, Inc. Anchor Slip Assembly With Independently Deployable Wedges
US11434711B2 (en) * 2021-02-09 2022-09-06 Halliburton Energy Services, Inc. Anchor slip assembly with independently deployable wedges
US11867012B2 (en) 2021-12-06 2024-01-09 Saudi Arabian Oil Company Gauge cutter and sampler apparatus

Also Published As

Publication number Publication date
AU2015223489A1 (en) 2016-08-25
AU2015223489B2 (en) 2017-10-19
AR099401A1 (es) 2016-07-20
CA2938955A1 (fr) 2015-09-03

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