EP4112874A1 - Ringförmige barriere - Google Patents

Ringförmige barriere Download PDF

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Publication number
EP4112874A1
EP4112874A1 EP21182651.6A EP21182651A EP4112874A1 EP 4112874 A1 EP4112874 A1 EP 4112874A1 EP 21182651 A EP21182651 A EP 21182651A EP 4112874 A1 EP4112874 A1 EP 4112874A1
Authority
EP
European Patent Office
Prior art keywords
anchoring part
anchoring
annular barrier
tubular metal
outer face
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.)
Withdrawn
Application number
EP21182651.6A
Other languages
English (en)
French (fr)
Inventor
Ricardo Vasques
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.)
Welltec Oilfield Solutions AG
Original Assignee
Welltec Oilfield Solutions AG
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 Welltec Oilfield Solutions AG filed Critical Welltec Oilfield Solutions AG
Priority to EP21182651.6A priority Critical patent/EP4112874A1/de
Priority to US17/854,362 priority patent/US20230003097A1/en
Priority to PCT/EP2022/068118 priority patent/WO2023275277A1/en
Priority to EP22736274.6A priority patent/EP4363692A1/de
Priority to AU2022301470A priority patent/AU2022301470A1/en
Priority to BR112023026688A priority patent/BR112023026688A2/pt
Publication of EP4112874A1 publication Critical patent/EP4112874A1/de
Withdrawn legal-status Critical Current

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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
    • 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
    • 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
    • E21B33/124—Units with longitudinally-spaced plugs for isolating the intermediate space
    • E21B33/1243—Units with longitudinally-spaced plugs for isolating the intermediate space with inflatable sleeves
    • 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
    • E21B33/124—Units with longitudinally-spaced plugs for isolating the intermediate space
    • E21B33/1243—Units with longitudinally-spaced plugs for isolating the intermediate space with inflatable sleeves
    • E21B33/1246—Units with longitudinally-spaced plugs for isolating the intermediate space with inflatable sleeves inflated by down-hole pumping means operated by a pipe string
    • 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
    • E21B33/127—Packers; Plugs with inflatable sleeve
    • E21B33/1277—Packers; Plugs with inflatable sleeve characterised by the construction or fixation of the sleeve

Definitions

  • the present invention relates to an annular barrier for providing zonal isolation in an annulus downhole between a well tubular metal structure and another well tubular metal structure or a wall of a borehole. Moreover, the present invention relates to a downhole completion system.
  • Annular barriers are used downhole for providing isolation of one zone from another in an annulus in a borehole of a well between a well tubular metal structure and the borehole wall or another well tubular metal structure.
  • the temperature may vary.
  • the well tubular metal structure with annular barriers will increase in length if the temperature increases and likewise the length of the well tubular metal structure will decrease if the temperature decreases, e.g. the temperature will decrease during fracturing with sea water.
  • the axial load on the expandable metal sleeve will vary and tests have shown that the annular barriers cannot withstand high axial load when the differential pressure across the expandable metal sleeve is low, i.e. when the pressure inside the annular barrier is low compared to the pressure in the annulus.
  • annular barrier for providing zonal isolation in an annulus downhole between a well tubular metal structure and another well tubular metal structure or a wall of a borehole, comprising:
  • the anchoring element may be a circumferential anchoring element.
  • the inner face of the first anchoring part and the outer face of the second anchoring part may be inclined in relation to the axial extension.
  • first anchoring part and the second anchoring part may be one monolithic whole.
  • first anchoring part and the second anchoring part may be one monolithic whole, the first anchoring part and the second anchoring part forming a key ring where the first anchoring part is one end of key ring and the second anchoring part is the other end of the key ring.
  • first anchoring part may form one monolithic whole, the second anchoring part forming a second monolithic whole.
  • first anchoring part may be shaped as a first slit ring, the second anchoring part being shaped as a second slit ring.
  • first anchoring part may further comprise an outer face, the second anchoring part comprising an inner face, and the outer face of the first anchoring part comprising friction enhancing means and faces the another well tubular metal structure or the wall of the borehole.
  • the friction enhancing means may be spikes or grooves.
  • the outer face of the first anchoring part may have at least one groove in which a spring element is arranged.
  • the inner face of the second anchoring part may have at least one groove in which a spring element is arranged.
  • the inner face of the first anchoring part and the outer face of the second anchoring part may have a lower friction between them than between the inner face of the of the second anchoring part and the circumferential groove.
  • the inner face of the second anchoring part may have at least one groove in which a spring element is arranged.
  • the anchoring element may comprise a third anchoring part having an outer face abutting a second inner face of the first anchoring part, so that the first anchoring part is arranged intermediate the third anchoring part and the second anchoring part, and the inner face of the third anchoring part and the inner face of the second anchoring part face and abut the circumferential groove.
  • outer face of the third anchoring part may be inclined in an opposite direction than that of the outer face of the second anchoring part.
  • the second inner face of the first anchoring part may be inclined corresponding to the inclined outer face of the third anchoring part.
  • the annular barrier may further comprise a second anchoring element comprising a first anchoring part at least partly overlapping a second anchoring part in a radially direction perpendicular to the axial extension so that an inner face of the first anchoring part at least partly abuts an outer face of the second anchoring part, the inner face of the first anchoring part and the outer face of the second anchoring part being inclined in relation to the axial extension in an opposite direction than that of the first anchoring element.
  • a second anchoring element comprising a first anchoring part at least partly overlapping a second anchoring part in a radially direction perpendicular to the axial extension so that an inner face of the first anchoring part at least partly abuts an outer face of the second anchoring part, the inner face of the first anchoring part and the outer face of the second anchoring part being inclined in relation to the axial extension in an opposite direction than that of the first anchoring element.
  • the inner face of the first anchoring part of the first anchoring element may be inclined facing upwards towards the top of the well, the inner face of the first anchoring part of the second anchoring element being inclined facing downwards away from the top of the well.
  • the expandable metal sleeve may have a second circumferential groove in which a sealing unit is arranged.
  • sealing unit may comprise of sealing element e.g. of elastomer.
  • the sealing unit may further comprise a back-up ring shaped element and a key ring element.
  • the expandable metal sleeve may comprise at least two sealing units and the anchoring element is arranged between two sealing units.
  • the present invention also relates to a downhole completion system comprising an annular barrier and a well tubular metal structure.
  • Fig. 1 shows a cross-sectional view of an annular barrier 1 in an unexpanded condition for providing zonal isolation in an annulus 2 downhole between a well tubular metal structure 3 and another well tubular metal structure 3b, as shown in Fig. 2 , or a wall 5 of a borehole 4, as shown in Fig. 1 .
  • the annular barrier comprises a tubular metal part 7 mounted as part of the well tubular metal structure 3.
  • the tubular metal part has an outer face 8, an opening 6 and an axial extension L along the well tubular metal structure.
  • the annular barrier 1 comprises an expandable metal sleeve 9 surrounding the tubular metal part 7, where the first expandable metal sleeve has a circumferential groove 10, a first end 11 and a second end 12, and each end of the expandable metal sleeve are connected with the outer face of the tubular metal part.
  • the annular barrier 1 further comprises an anchoring element 14 arranged in the circumferential groove, and the anchoring element comprises a first anchoring part 15 at least partly overlapping a second anchoring part 16 in a radially direction perpendicular to the axial extension L so that an inner face 17 of the first anchoring part 15 at least partly abuts an outer face 18 of the second anchoring part 16.
  • the anchoring element 14 is a circumferential anchoring element extending all the way around the expandable metal sleeve 9, and the anchoring element 14 may be slit so that the anchoring element can be mounted in the groove.
  • the inner face 17 of the first anchoring part 15 and the outer face 18 of the second anchoring part 16 are inclined in relation to the axial extension.
  • the first anchoring part moves in an opposite direction along the inclined outer face of the second anchoring part, as indicated with arrow B in Fig. 3 , and the first anchoring part is then forced radially outwards, as indicated with dashed lines in Fig. 3 , anchoring the expandable metal sleeve even further to the another well tubular metal structure or the wall of the borehole.
  • the first anchoring part 15 forms one monolithic whole and the second anchoring part 16 forms a second monolithic whole.
  • the first anchoring part is shaped as a first slit ring
  • the second anchoring part is shaped as a second slit ring in order to be able to widen and thus to be mounted in the groove.
  • the second anchoring part 16 is widened and moved along the outer face of the expandable metal sleeve 9 and into the circumferential groove 10, and then the first anchoring part 15 is widened and moved along the outer face of the expandable metal sleeve 9 until reaching the circumferential groove 10 and being arranged circumferenting the second anchoring part, so that the inclined inner face of the first anchoring part and the inclined outer face of the second anchoring part abut.
  • the first anchoring part further comprises an outer face 19 facing the another well tubular metal structure 3b, as shown in Fig. 2 , or the wall 5 of the borehole 4, as shown in Fig. 1 , and the second anchoring part 16 comprises an inner face 20 facing and abutting the circumferential groove 10.
  • the outer face 19 of the first anchoring part 15 comprises friction enhancing means 21, such as spikes 21a, as shown in Fig. 1 , or provided by grooves 21b, as shown in Fig. 2 .
  • the annular barrier 1 further comprises a second anchoring element 14b comprising a first anchoring part 15b at least partly overlapping a second anchoring part 16b in a radially direction perpendicular to the axial extension L so that an inner face 17b of the first anchoring part at least partly abuts an outer face 18b of the second anchoring part.
  • the inner face 17b of the first anchoring part 15b and the outer face 18b of the second anchoring part 16b are inclined in relation to the axial extension L in an opposite direction than that of the first anchoring element.
  • the first anchoring element 14 has inclined faces which when mirrored around line R correspond to the inclined faces of the second anchoring element 14b.
  • first anchoring elements 14 with inclined faces in one direction and second anchoring elements with inclined faces in an opposite direction as shown in Fig. 1
  • the annular barrier 1 can withstand axial loads in both directions along the axial extension L as the first anchoring elements 14 are activated when the axial load is in one direction, and the second anchoring elements 14b are activated when the axial load pulls in the opposite direction.
  • the expandable metal sleeve 9 of the annular barrier 1 has a second circumferential groove 10b in which a sealing unit 24 is arranged.
  • the sealing unit comprises a sealing element 25 e.g. of elastomer or polymer, a back-up ring shaped element 26 on each side of the sealing element and a key ring element 27 surrounding part of the back-up ring.
  • the expandable metal sleeve comprises several sealing units, and each anchoring element is arranged between two sealing units.
  • the first anchoring part 15 and the second anchoring part 16 are one monolithic whole.
  • the first anchoring part 15 and the second anchoring part 16 forms a key ring 34 where the first anchoring part is one end of key ring and the second anchoring part is the other end of the key ring 34.
  • the key ring unwinds as the expandable metal sleeve 9 is expanding, and when expanded, the first anchoring part will not fully overlap the second anchoring part along the whole circumference of the expandable metal sleeve.
  • the expandable metal sleeve 9 has several grooves 10, 10b, and between these grooves, other "empty" grooves are arranged so that the anchoring element and the sealing units 24 are arranged with the same distance along the axial extension L.
  • the annular barrier 1 further comprises a valve assembly 33 fluidly connected with the opening 6 and the expandable space 28 so as to fluidly connect the opening and the expandable space during expansion of the expandable metal sleeve 9 and close the fluid connection after the expandable metal sleeve has been properly expanded.
  • the valve assembly 33 may in the second position open for a fluid connection between the annulus and the expandable space 28 in order to equalise the pressure therebetween.
  • the outer face 19 of the first anchoring part 15 has two grooves 23 in which a spring element 22 is arranged, as shown in Fig. 4 .
  • the spring elements 22 are compressed and after the expansion is finalised, the spring elements 22 will slightly decompress due to the small "spring-back-effect" after expansion of metal.
  • the spring elements 22 are thus always in contact with the wall of the borehole, and when the axial load starts, the spring elements will ensure that the first anchoring part will move along the inclined outer face of the second anchoring part 16, and thus the first anchoring part 15 will be forced radially outwards as illustrated by the dotted lines in Fig. 3 .
  • Another way is shown in Fig.
  • the inner face 20 of the second anchoring part 16 has two grooves 23 in which a spring element 22 is arranged.
  • the spring elements 22 force both the second anchoring part 16 and the first anchoring part 15 outwards so the first anchoring part is in contact/engagement with the wall of the borehole or another well tubular metal structu re.
  • the inner face 17, 17b of the first anchoring part 15, 15b and the outer face 18, 18b of the second anchoring part 16, 16b have a low friction between them so that no substantial force is lost in order for the anchoring parts to slide in relation to each other.
  • the inner face of the first anchoring part and the outer face of the second anchoring part have a lower friction between them than between the inner face of the second anchoring part and the circumferential groove.
  • the circumferential groove 10 has inclined end faces 35 and in Figs. 6-8 , the end faces are perpendicular to the axial extension L.
  • the second anchoring part 16 is more restricted than in Figs. 3-5 .
  • the inclined outer face of the second anchoring part ends at the top of the groove so that the first anchoring part is not restricted by the end faces of the groove and is thus not prevented from sliding further past the end of the outer face of the second anchoring part if needed.
  • the anchoring element 14, 14b of the annular barrier 1 comprises a third anchoring part 31 having an outer face 32 abutting a second inner face 17a of the first anchoring part, so that the first anchoring part is arranged intermediate the third anchoring part and the second anchoring part, and the inner face of the third anchoring part and the inner face of the second anchoring part face and abut the circumferential groove.
  • the outer face 19 of the first anchoring part 15 comprises two grooves 23 in which a spring element 22 is arranged and both the inner face 20 of the second anchoring part 16 and an inner face 36 of the third anchoring part 31 comprise two grooves 23 in which a spring element 22 is arranged.
  • Fig. 1 further discloses a downhole completion system 100 comprising the aforementioned annular barrier 1 and a well tubular metal structure 3.
  • fluid or "well fluid” is meant any kind of fluid that may be present in oil or gas wells downhole, such as natural gas, oil, oil mud, crude oil, water, etc.
  • gas is meant any kind of gas composition present in a well, completion or open hole, and by “oil” is meant any kind of oil composition, such as crude oil, an oil-containing fluid, etc.
  • Oil and water fluids may thus all comprise other elements or substances than gas, oil and/or water, respectively.
  • casing or “well tubular metal structure” is meant any kind of pipe, tubing, tubular, liner, string, etc., used downhole in relation to oil or natural gas production.

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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)
EP21182651.6A 2021-06-30 2021-06-30 Ringförmige barriere Withdrawn EP4112874A1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP21182651.6A EP4112874A1 (de) 2021-06-30 2021-06-30 Ringförmige barriere
US17/854,362 US20230003097A1 (en) 2021-06-30 2022-06-30 Annular barrier
PCT/EP2022/068118 WO2023275277A1 (en) 2021-06-30 2022-06-30 Annular barrier
EP22736274.6A EP4363692A1 (de) 2021-06-30 2022-06-30 Ringförmige barriere
AU2022301470A AU2022301470A1 (en) 2021-06-30 2022-06-30 Annular barrier
BR112023026688A BR112023026688A2 (pt) 2021-06-30 2022-06-30 Barreira anular

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21182651.6A EP4112874A1 (de) 2021-06-30 2021-06-30 Ringförmige barriere

Publications (1)

Publication Number Publication Date
EP4112874A1 true EP4112874A1 (de) 2023-01-04

Family

ID=76730299

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21182651.6A Withdrawn EP4112874A1 (de) 2021-06-30 2021-06-30 Ringförmige barriere

Country Status (1)

Country Link
EP (1) EP4112874A1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4942925A (en) * 1989-08-21 1990-07-24 Dresser Industries, Inc. Liner isolation and well completion system
EP2586963A1 (de) * 2011-10-28 2013-05-01 Welltec A/S Dichtungsmaterial für ringförmige Sperren
WO2018029456A1 (en) * 2016-08-09 2018-02-15 Morphpackers Ltd Packer
US10125567B2 (en) * 2014-10-08 2018-11-13 Schlumberger Technology Corporation Packer
US20190383114A1 (en) * 2018-06-19 2019-12-19 Welltec Oilfield Solutions Ag Annular barrier
US20200165892A1 (en) * 2018-11-23 2020-05-28 Welltec Oilfield Solutions Ag Annular barrier

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4942925A (en) * 1989-08-21 1990-07-24 Dresser Industries, Inc. Liner isolation and well completion system
EP2586963A1 (de) * 2011-10-28 2013-05-01 Welltec A/S Dichtungsmaterial für ringförmige Sperren
US10125567B2 (en) * 2014-10-08 2018-11-13 Schlumberger Technology Corporation Packer
WO2018029456A1 (en) * 2016-08-09 2018-02-15 Morphpackers Ltd Packer
US20190383114A1 (en) * 2018-06-19 2019-12-19 Welltec Oilfield Solutions Ag Annular barrier
US20200165892A1 (en) * 2018-11-23 2020-05-28 Welltec Oilfield Solutions Ag Annular barrier

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