EP3480421A1 - Ringförmige barriere für bohrlöcher mit kleinem durchmesser - Google Patents

Ringförmige barriere für bohrlöcher mit kleinem durchmesser Download PDF

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Publication number
EP3480421A1
EP3480421A1 EP17200098.6A EP17200098A EP3480421A1 EP 3480421 A1 EP3480421 A1 EP 3480421A1 EP 17200098 A EP17200098 A EP 17200098A EP 3480421 A1 EP3480421 A1 EP 3480421A1
Authority
EP
European Patent Office
Prior art keywords
metal sleeve
expandable metal
well tubular
annular barrier
metal structure
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Withdrawn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
EP17200098.6A
Other languages
English (en)
French (fr)
Inventor
Ricardo Reves 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 EP17200098.6A priority Critical patent/EP3480421A1/de
Priority to PCT/EP2018/070249 priority patent/WO2019020729A1/en
Priority to BR112020000688-2A priority patent/BR112020000688B1/pt
Priority to CA3069881A priority patent/CA3069881A1/en
Priority to US16/045,805 priority patent/US10731435B2/en
Priority to AU2018308919A priority patent/AU2018308919B2/en
Priority to DK18748883.8T priority patent/DK3658744T3/da
Priority to EP18748883.8A priority patent/EP3658744B1/de
Priority to CN201880046164.4A priority patent/CN110892133A/zh
Priority to RU2020106619A priority patent/RU2765939C2/ru
Publication of EP3480421A1 publication Critical patent/EP3480421A1/de
Priority to SA520411019A priority patent/SA520411019B1/ar
Withdrawn legal-status Critical Current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
    • E21B33/127—Packers; Plugs with inflatable sleeve
    • 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 being mounted as part of a well tubular metal structure for providing zonal isolation in a small diameter borehole downhole for isolating a first zone from a second zone.
  • the present invention also relates to a well tubular metal structure having a plurality of tubular sections and at least one annular barrier according to the present invention, and to a completion method of preparing an annular barrier according to the present invention.
  • Annular barriers for providing a zone isolation e.g. for isolating a hydrocarbon-containing zone from a water producing zone
  • an isolating element such as an expandable metal sleeve surrounding the base pipe, such as the casing or liner
  • an isolating element such as an expandable metal sleeve surrounding the base pipe, such as the casing or liner
  • the swelling of the swellable material is dependent on fluid content and temperature in the well and, most importantly, the deployment time from entering the well and until arrival at the determined position.
  • the casing or well tubular metal structure gets stuck or is just much more difficult to deploy, resulting in the deployment time being much longer than planned, and in these cases, the swelling may occur too early and the barrier is then set too early.
  • the space between the base pipe and the borehole wall is very narrow in order to maximise the inner diameter of the base and thus the production volume.
  • the risk of the casing or well tubular metal structure getting stuck is even higher than in larger wells.
  • annular barrier for being mounted as part of a well tubular metal structure for providing zonal isolation in a small diameter borehole downhole for isolating a first zone from a second zone, comprising:
  • the second end of the first end part may be provided with a female thread connection, and the second end of the second end part may be provided with a male thread connection.
  • first and second end parts may be connected to the first and second ends of the expandable metal sleeve by means of a standard connection, such as a stub acme thread connection.
  • sealing elements may be arranged on the outer face of the expandable metal sleeve.
  • the expandable metal sleeve may have:
  • the expandable metal sleeve may have an outer sleeve diameter in an unexpanded state, the unexpanded outer sleeve diameter being equal to or smaller than an outer diameter of the first and second end parts.
  • sealing elements may be arranged in grooves in the outer face of the expandable metal sleeve.
  • the expandable metal sleeve may be made of a material which is more pliant than the material of the first and second end parts.
  • test standard ASTM D1457 Elongation can be used.
  • the annular barrier as described above may further comprise a split ring-shaped retaining element, the split ring-shaped retaining element forming a back-up for the sealing element.
  • the split ring-shaped retaining element may have more than one winding, so that when the expandable tubular is expanded from the first outer diameter to the second outer diameter, the split ring-shaped retaining element partly unwinds.
  • the split ring-shaped retaining element may be arranged in an abutting manner to the sealing element.
  • first and second end parts may be tubular and may have a maximum wall thickness which is larger than a maximum wall thickness of the expandable metal sleeve.
  • the expandable metal sleeve may be welded to the first and second end parts.
  • the expandable metal sleeve may have a length, and no tubular may be arranged within the expandable metal sleeve along the entire length of the expandable metal sleeve.
  • Said expandable metal sleeves may be expanded by an internal fluid pressure in the well tubular metal structure.
  • At least one of the tubular sections between the expandable metal sleeves may comprise an inflow section, a sensor section or a gas lift valve.
  • the present invention also relates to a well tubular metal structure having a plurality of tubular sections and at least one annular barrier according to the present invention; wherein the first and second end parts and the expandable metal sleeve is mounted in succession with the plurality of tubular sections, so that the first end part and the second end part are arranged between the expandable metal sleeve and the tubular sections along an axial extension of the well tubular metal structure.
  • the well tubular metal structure may have an inner face, and an inner face of the expandable metal sleeve may form part of the inner face of the well tubular metal structure.
  • a second annular barrier according to present invention may be mounted as part of the well tubular metal structure, and a plurality of tubular sections may be mounted between the annular barriers.
  • first end part may create a first distance between the expandable metal sleeve and one of the plurality of tubular sections
  • the second end part may create a second distance between the expandable metal sleeve and another one of the plurality of tubular sections.
  • the expandable metal sleeve does not overlap any of the plurality of tubular sections.
  • the expandable metal sleeve may have an outer sleeve diameter in an unexpanded state, the unexpanded outer sleeve diameter being equal to or smaller than an outer diameter of the tubular sections forming the well tubular metal structure.
  • the well tubular metal structure may be a produciton casing or a velocity string.
  • the present invention also relates to a downhole system comprising the well tubular metal structure according to the present invention and an expansion tool for isolating a part of the well tubular metal structure opposite the expandable metal sleeve for pressurising that part in order to expand the expandable metal sleeve.
  • the present invention relates to a completion method of preparing an annular barrier according to the present invention before being mounted as part of the well tubular metal structure, said completion method comprising:
  • the present invention relates to a completion method comprising:
  • Fig. 1 shows an annular barrier 1 for being mounted as part of a well tubular metal structure 100 for providing zonal isolation in a borehole downhole for isolating a first zone 101, e.g. producing oil or gas, from a second zone 102, e.g. producing water, as seen in Fig. 4 .
  • Tubular sections of the well tubular metal structure are illustrated by dotted lines in Fig. 1 .
  • the annular barrier 1 comprises an expandable metal sleeve 2 having a first end 3 and a second end 4 and an outer face 5 facing the borehole.
  • the expandable metal sleeve 2 is shown in its unexpanded condition, and in order to provide zonal isolation, the expandable metal sleeve is expanded to a larger outer diameter by a hydraulic pressure from within to deform the expandable metal sleeve until the outer face presses towards the wall of the borehole.
  • the annular barrier 1 further comprises a first end part 6 having a first end 7 connected to the first end of the expandable metal sleeve and a second end 8 for being mounted as part of the well tubular structure, and a second end part 9 having a first end 10 connected to the second end of the expandable metal sleeve and a second end 11 for being mounted as part of the well tubular structure.
  • the first end 7 of the first end part 6 is connected “end to end” to the first end 3 of the expandable metal sleeve, and the first end 10 of the second end part 9 is connected “end to end” to the second end 4 of the expandable metal sleeve, so that they form one tubular pipe.
  • the second ends 8, 11 of the end parts are provided with an external thread (male thread connection) 20b or an internal thread (female thread connection) 20b for being mounted to corresponding external or internal threads of the well tubular metal structure.
  • the well tubular metal structure can be made with a substantially smaller outer diameter and fit into small diameter wells than annular barriers with a base pipe and a surrounding sleeve.
  • the expandable metal sleeve has a first section 26 having a first outer diameter OD 1 and a first thickness T 1 , and circumferential projections 27 having a thickness T 2 which is larger than the first thickness T 1 and having a second outer diameter OD 2 which is larger than the first outer diameter, so that when expanding the expandable metal sleeve, the first section bulges more radially outwards than the first section, resulting in the expandable metal sleeve 2 being strengthened in the expanded condition.
  • the expandable metal sleeve does not need to expand as much as in larger diameter wells/boreholes, and therefore it is possible for the expandable metal sleeve of the "base-less" annular barrier to maintain the barrier function without the base pipe.
  • circumferential projections 27 increase the strength of the expanded expandable metal sleeve 2 when the expandable metal sleeve is not expanded more than required in small diameter wells/boreholes, so that the expandable metal sleeve can serve as both the base pipe and the barrier.
  • the second end 8 of the first end part 6 is provided with a female thread connection, i.e. an internal thread
  • the second end 11 of the second end part 9 is provided with a male thread connection, i.e. an external thread.
  • the female thread part i.e. the female thread connection 20a
  • the first and second end parts 6, 9 are connected to the first and second ends 3, 4 of the expandable metal sleeve 2 by means of a standard connection 14, such as a stub acme thread connection as shown.
  • the first and second ends 3, 4 of the expandable metal sleeve 2 are provided with external threads matching internal threads of the first end part and the second end part 9, the internal and external threads forming the stub acme thread connections. Other standard connections within the oil industry can be used.
  • Sealing elements 15 are arranged in grooves 16 on the outer face of the expandable metal sleeve 2 for increasing the sealing ability to the wall of the borehole when expanded downhole.
  • the grooves 16 may be provided by the circumferential projections 27, and when expanding the expandable metal sleeve, the first section between the projections bulges more radially outwards than the projections, forcing the sealing element radially outwards.
  • the expandable metal sleeve 2 has an outer sleeve diameter Od e in an unexpanded state, the unexpanded outer sleeve diameter being equal to or sligthly smaller than an outer diameter OD P of the first and second end parts, so that the end parts protect the sealing elements while run in hole.
  • the well tubular metal structure 100 has a first outer diameter ODwi, and in Fig. 2 the well tubular metal structure 100 has a second outer diameter OD W2 which is smaller than the first outer diameter. If during running the well tubular metal structure in the small diameter borehole, circulation of fluid is poor due to an unexpected narrowing of the borehole, the well tubular metal structure can then be retracted, and part of a plurality of tubular sections of the well tubular metal structure can be dismounted and replaced with tubular sections having a smaller outer diameter OD W2 , as shown in Fig. 2 .
  • the first and second end parts 6, 9 are tubular and have a maximum wall thickness T P1 which is larger than a maximum wall thickness T 2 of the expandable metal sleeve 2.
  • the expandable metal sleeve is made of a material which is more pliant than the material of the first and second end parts. In order to determine if the material of the expandable metal sleeve is more pliant and thus easier to elongate than the material of the first and second end parts, the test standard ASTM D1457 can be used.
  • the annular barrier 1 further comprises a split ring-shaped retaining element 17 forming a back-up for the sealing element 15.
  • the split ring-shaped retaining element 17 has more than one winding, so that when the expandable tubular is expanded from the first outer diameter to the second outer diameter, the split ring-shaped retaining element partly unwinds.
  • the split ring-shaped retaining element 17 may be arranged in an abutting manner to the sealing element, or an intermediate element 31 is arranged between the split ring-shaped retaining element 17 and the sealing element 15.
  • the expandable metal sleeve 2 is connected to the end parts 6, 9 without any welded connections; however, in Fig. 3 the expandable metal sleeve 2 is welded to the first and second end parts 6, 9, and a connection ring 29 is arranged outside and overlapping the end 3, 4 of the expandable metal sleeve and the first end 7, 10 of the end part 6, 9 and is threadingly connected thereto.
  • the well tubular metal structure 100 may have a plurality of tubular sections 40 between two annular barriers 1, and the first and second end parts 6, 9 and the expandable metal sleeve 2 are mounted in succession with the plurality of tubular sections, so that the first end part 6 and the second end part 9 are arranged between the expandable metal sleeve 2 and the tubular sections along an axial extension 30 of the well tubular metal structure 2.
  • the expandable metal sleeve 2, the end parts 6, 9 and the tubular sections 40 form one single walled pipe/tubular.
  • an inner face 22 (shown in Figs. 1-3 ) of the expandable metal sleeve 2 forms part of the inner face 21 (shown in Figs.
  • a flow section 60 is furthermore arranged between two annular barriers in the first zone.
  • the flow section provides primary flow into the well tubular metal structure, when the annular barriers have been expanded, but may also be used for ejecting fluid into the annulus, e.g. for fracking the formation surrounding the well tubular metal structure 100.
  • the first end part creates a first distance di between the expandable metal sleeve and one of the plurality of tubular sections
  • the second end part creates a second distance d 2 between the expandable metal sleeve and another one of the plurality of tubular sections.
  • the expandable metal sleeve does not overlap any of the plurality of tubular sections.
  • the expandable metal sleeves are expanded by an internal fluid pressure in the well tubular metal structure.
  • the entire well tubular metal structure may be pressurised from within, or an expansion tool for isolating a part of the well tubular metal structure opposite the expandable metal sleeve may be introduced in the well tubular metal structure for pressurising that part and expand the expandable metal sleeves one by one.
  • the well tubular metal structure may be submerged by means of a drill pipe, and the annular barriers may be expanded by pressuring the drill pipe and the well tubular metal structure before disconnecting the drill pipe from the well tubular metal structure.
  • At least one of the tubular sections between the annular barrier may comprise an inflow section for letting fluid into the well tubular metal structure also called the production casing.
  • One of the tubular sections may also comprise a sensor section for measuring a condition downhole, e.g. for controlling and optimise the production.
  • One of the tubular sections further up the well may also comprise a gas lift valve for introducing gas to reduce the hydrostatic pressure in the fluid column.
  • the well tubular metal structure may be a production casing installed more permanently in the borehole, or the well tubular metal structure may be a velocity string used for early production. In the event that the early production shows a successful result, the velocity string is then used as the production casing.
  • fluid or well fluid 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
  • oil is meant any kind of oil composition, such as crude oil, an oil-containing fluid, etc.
  • Gas, oil, and water fluids may thus all comprise other elements or substances than gas, oil, and/or water, respectively.
  • a well tubular metal structure or casing any kind of pipe, tubing, tubular, liner, string etc. used downhole in relation to oil or natural gas production.
  • a downhole tractor can be used to push the tool all the way into position in the well.
  • the downhole tractor may have projectable arms having wheels, wherein the wheels contact the inner surface of the casing for propelling the tractor and the tool forward in the casing.
  • a downhole tractor is any kind of driving tool capable of pushing or pulling tools in a well downhole, such as a Well Tractor®.

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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)
EP17200098.6A 2017-07-27 2017-11-06 Ringförmige barriere für bohrlöcher mit kleinem durchmesser Withdrawn EP3480421A1 (de)

Priority Applications (11)

Application Number Priority Date Filing Date Title
EP17200098.6A EP3480421A1 (de) 2017-11-06 2017-11-06 Ringförmige barriere für bohrlöcher mit kleinem durchmesser
AU2018308919A AU2018308919B2 (en) 2017-07-27 2018-07-26 Annular barrier for small diameter wells
BR112020000688-2A BR112020000688B1 (pt) 2017-07-27 2018-07-26 Barreira anular, estrutura metálica tubular de poço e método de completação para preparar uma barreira anular
CA3069881A CA3069881A1 (en) 2017-07-27 2018-07-26 Annular barrier for small diameter wells
US16/045,805 US10731435B2 (en) 2017-07-27 2018-07-26 Annular barrier for small diameter wells
PCT/EP2018/070249 WO2019020729A1 (en) 2017-07-27 2018-07-26 ANNULAR BARRIER FOR SMALL DIAMETER WELL
DK18748883.8T DK3658744T3 (da) 2017-07-27 2018-07-26 Ringformet barriere til brønde med små diametre
EP18748883.8A EP3658744B1 (de) 2017-07-27 2018-07-26 Ringförmige barriere für bohrlöcher mit kleinem durchmesser
CN201880046164.4A CN110892133A (zh) 2017-07-27 2018-07-26 用于小直径井的环状屏障
RU2020106619A RU2765939C2 (ru) 2017-07-27 2018-07-26 Затрубный барьер для скважин малого диаметра
SA520411019A SA520411019B1 (ar) 2017-07-27 2020-01-09 حاجز حلقي للآبار ذات القُطر الصغير

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17200098.6A EP3480421A1 (de) 2017-11-06 2017-11-06 Ringförmige barriere für bohrlöcher mit kleinem durchmesser

Publications (1)

Publication Number Publication Date
EP3480421A1 true EP3480421A1 (de) 2019-05-08

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ID=60262821

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17200098.6A Withdrawn EP3480421A1 (de) 2017-07-27 2017-11-06 Ringförmige barriere für bohrlöcher mit kleinem durchmesser

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EP (1) EP3480421A1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1624152A2 (de) * 2004-08-04 2006-02-08 Read Well Services Limited Hydraulisch aktivierter Casing-Packer
EP2206879A1 (de) * 2009-01-12 2010-07-14 Welltec A/S Ringförmige Sperre und ringförmiges Absperrungssystem
US20100252278A1 (en) * 2009-04-02 2010-10-07 Enhanced Oilfield Technologies. Llc Anchor assembly
EP2789792A1 (de) * 2013-04-12 2014-10-15 Welltec A/S Erweiterbares Bohrlochrohr
US20170218734A1 (en) * 2016-02-01 2017-08-03 Welltec A/S Downhole completion system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1624152A2 (de) * 2004-08-04 2006-02-08 Read Well Services Limited Hydraulisch aktivierter Casing-Packer
EP2206879A1 (de) * 2009-01-12 2010-07-14 Welltec A/S Ringförmige Sperre und ringförmiges Absperrungssystem
US20100252278A1 (en) * 2009-04-02 2010-10-07 Enhanced Oilfield Technologies. Llc Anchor assembly
EP2789792A1 (de) * 2013-04-12 2014-10-15 Welltec A/S Erweiterbares Bohrlochrohr
US20170218734A1 (en) * 2016-02-01 2017-08-03 Welltec A/S Downhole completion system

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