WO2013128220A1 - Anneau d'extrémité de garniture étanche avec dispositif de préhension pour tuyau de base - Google Patents

Anneau d'extrémité de garniture étanche avec dispositif de préhension pour tuyau de base Download PDF

Info

Publication number
WO2013128220A1
WO2013128220A1 PCT/IB2012/000384 IB2012000384W WO2013128220A1 WO 2013128220 A1 WO2013128220 A1 WO 2013128220A1 IB 2012000384 W IB2012000384 W IB 2012000384W WO 2013128220 A1 WO2013128220 A1 WO 2013128220A1
Authority
WO
WIPO (PCT)
Prior art keywords
gripping device
end ring
packer
base pipe
gripping
Prior art date
Application number
PCT/IB2012/000384
Other languages
English (en)
Inventor
Kristian Andersen
Original Assignee
Halliburton Energy Services, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Halliburton Energy Services, Inc. filed Critical Halliburton Energy Services, Inc.
Priority to PCT/IB2012/000384 priority Critical patent/WO2013128220A1/fr
Priority to US14/371,641 priority patent/US20150027704A1/en
Publication of WO2013128220A1 publication Critical patent/WO2013128220A1/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
    • E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
    • E21B33/1285—Packers; Plugs with a member expanded radially by axial pressure by fluid pressure
    • 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
    • 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
    • E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
    • 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
    • E21B33/1293—Packers; Plugs with mechanical slips for hooking into the casing with means for anchoring against downward and upward movement
    • 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
    • E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
    • E21B2200/01—Sealings characterised by their shape

Definitions

  • This disclosure relates generally to equipment utilized and operations performed in conjunction with a subterranean well and, in one example described below, more particularly provides a packer end ring with a device for gripping a base pipe.
  • Packers are used in wells to seal off annuli formed between tubular strings, or between a tubular string and another surface, such as a wall of a wellbore. It is
  • the packer can comprise an end ring positioned proximate a seal element on a base pipe, and a gripping device which is compressed radially inward by a surface formed in the end ring, the surface encircling the base pipe.
  • the method can include: positioning an end ring on a base pipe proximate a seal element; and radially compressing a gripping device in the end ring, so that the gripping device grips the base pipe.
  • a packer which can comprise an end ring positioned proximate a seal element on a base pipe, and a circular gripping device which encircles the base pipe and is compressed radially inward by a surface formed in the end ring.
  • FIG. 1 is a representative cross-sectional view of a well system and associated method which can embody
  • FIG. 2 is an enlarged scale representative cross- sectional view of a packer which may be used in the system and method of FIG. 1, and which can embody the principles of this disclosure.
  • FIG. 3 is a further enlarged scale representative cross-sectional view of a portion of the packer.
  • FIG. 4 is an end view of an end ring of the packer.
  • FIG. 5 is a cross-sectional view of the end ring, taken along line 5-5 of FIG. 4.
  • FIG. 1 Representatively illustrated in FIG. 1 is a system 10 for use with a subterranean well, and an associated method, which can embody principles of this disclosure.
  • system 10 and method are merely one example of an application of the principles of this disclosure in practice, and a wide variety of other examples are possible. Therefore, the scope of this disclosure
  • a packer 12 is interconnected in a tubular string 14 and positioned in a wellbore 16.
  • the packer 12 includes a seal element 18 which extends radially outward into sealing engagement with the wellbore 16, thereby sealing off an annulus 20 formed radially between the tubular string 14 and the wellbore 16.
  • the wellbore 16 is lined with casing 22 and cement 24.
  • the wellbore 16 could be uncased or open hole, in which case the seal element 18 could sealingly engage a wall 26 of an earth formation 28 penetrated by the wellbore 16.
  • the seal element 18 can comprise a swellable material which swells in response to contact with a particular fluid in the well.
  • the term “swell” (and similar terms, such as, “swellable,” “swelling,” etc.) is used herein to indicate an increase in volume of a material.
  • a seal element can expand outward without swelling (e.g., as in inflatable or
  • seal element material itself increases in volume if the material is to be considered swollen.
  • the swellable material swells when it is contacted with a particular swelling fluid (e.g., oil, gas, other hydrocarbons, water, etc.) in the well.
  • a particular swelling fluid e.g., oil, gas, other hydrocarbons, water, etc.
  • the swelling fluid may already be present in the well, or it may be introduced after installation of the packer 12 in the well, or it may be carried into the well with the packer, etc.
  • the swellable material could instead swell in response to exposure to a particular temperature, or upon passage of a period of time, or in response to another stimulus, etc.
  • End rings 30 longitudinally straddle the seal element
  • differential pressure can be sealed against in the annulus 20.
  • the end rings 30 may directly abut opposite
  • seal element 18 longitudinal ends of the seal element 18 as depicted in FIG. 1.
  • components such as backup rings, etc. may be interposed between the end rings 30 and the seal element 18.
  • seal elements 18 could be straddled by the end rings 30, and an end ring could be positioned between a pair of seal elements.
  • the scope of this disclosure is not limited at all to any of the details of the packer 12, or seal element 18, end rings 30 and base pipe 32, as illustrated in the drawings or described herein.
  • FIG. 2 an enlarged scale cross-sectional view of the packer 12, apart from the remainder of the FIG. 1 system 10, is representatively illustrated.
  • the packer 12 could, however, be used in other systems and methods, in keeping with the scope of this disclosure.
  • the seal element 18 comprises a swellable seal material 34, and encircles the base pipe 32.
  • the base pipe 32 may be provided with end connectors (not shown) for interconnecting the packer 12 in the tubular string 14.
  • the end rings 30 are positioned at opposite ends of the seal element 18.
  • the end rings 30 can serve to protect the seal element 18 as the packer 12 is being conveyed into the wellbore 16, as well as to prevent displacement of the seal element 18 relative to the base pipe 32.
  • a gripping device 36 is
  • the gripping devices 36 secure the end rings 30 against longitudinal displacement relative to the base pipe 32, so that the seal element 18 is also secured against longitudinal displacement relative to the base pipe.
  • FIG. 3 A further enlarged scale cross-sectional view of a portion of the packer 12 is representatively illustrated in FIG. 3. In this view, further details of the end ring 30 and gripping device 36 may be more clearly seen.
  • the end ring 30 has a frusto-conical interior surface 38 formed therein.
  • the surface 38 tapers radially inward in a direction toward the seal element 18.
  • the gripping device 36 also has a frusto-conical surface 40 formed thereon.
  • the surface 40 complementarily engages the surface 38, so that, if the gripping device 36 is displaced longitudinally toward the seal element 18, the gripping device will be compressed radially inward.
  • the surfaces 38, 40 could instead be frusto-conical . They could instead be inclined or curved, etc., in any other manner. Any means of radially compressing the gripping device 36 may be used, in keeping with the scope of this disclosure.
  • At least one of the gripping device and end ring surfaces 40, 38 can be provided with a friction reducing material to thereby reduce a biasing force required to displace the gripping device 36 longitudinally relative to the end ring 30. This will increase the gripping engagement between the gripping device 36 and the base pipe 32.
  • Friction-reducing materials such as PTFE, ceramic coatings, etc., may be used, if desired.
  • a gripping surface 42 in the gripping device engages and grips an external surface 44 on the base pipe 32.
  • the gripping surface 42 can have a coating, gripping particles, teeth, or any other treatment to enhance the gripping engagement between the surfaces 42, 44.
  • the gripping device 36 When the gripping device 36 engages the external surface 44 on the base pipe 32, the gripping device also closes off a radial gap between the end ring 30 and the base pipe. This can prevent extrusion of the seal element 18 through the gap, which can increase a differential pressure resisting capability of the packer 12.
  • end ring 30 and gripping device 36 are representatively illustrated, apart from the packer 12.
  • the end ring 30 and gripping device 36 may be used with packers other than the packer 12, in keeping with the scope of this disclosure.
  • threaded members 46 are threaded into the end ring 30, in order to displace the gripping device 36 longitudinally relative to the end ring, thereby compressing the gripping device radially inward.
  • the threaded members 46 are illustrated as comprising externally-threaded socket head set screws. However, any other type of threaded member (s) may be used, as desired, and it is not necessary in keeping with principles of this disclosure, for the threaded members to be used at all.
  • the gripping device 36 could be biased relative to the end ring 30 by a biasing device (such as a spring, a swellable material, etc.).
  • the gripping device 36 is annular shaped, so that it can encircle the base pipe 32, but the gripping device has at least one longitudinal split 48 therein, allowing the gripping device to be compressed radially inward.
  • the gripping device 36 may comprise a single circular segment which is resilient, so that it exerts an initial "bite" into the base pipe 32 when it is installed thereon.
  • the gripping device 36 may comprise multiple circular segments which can readily conform to a misshaped (e.g., non-cylindrical, elliptical, rough, etc.) external surface 44 on the base pipe 32.
  • the end rings 30 and gripping devices 36 can effectively contain the seal element 18 on the base pipe 32, while being economical to manufacture and convenient to install.
  • the above disclosure provides to the art an improved packer 12.
  • the packer 12 can comprise an end ring 30 positioned proximate a seal element 18 on a base pipe 32, and a gripping device 36 which is compressed radially inward by a surface 38 formed in the end ring 30. The surface 38 encircles the base pipe 32.
  • the surface 38 may be a frusto-conical surface.
  • the gripping device 36 may grip the base pipe 32 in response to longitudinal displacement of the gripping device 36 relative to the surface 38.
  • the seal element 18 can include a swellable material 34 which swells in response to contact with a fluid.
  • the gripping device 36 may close off a gap formed radially between the base pipe 32 and the end ring 30.
  • the gripping device 36 can comprise a circular segment having a split 48 therein which permits radial compression of the circular segment.
  • the gripping device 36 can comprise multiple circular segments.
  • a gripping surface 42 may be formed on the gripping device 36. At least one member 46 may thread into the end ring 30 and thereby radially compress the gripping device 36.
  • the gripping device 36 may include a surface 40 which cooperatively engages the end ring surface 38, and at least one of the gripping device and end ring surfaces 40, 38 can be provided with a friction reducing material.
  • a method of constructing a packer 12 is also described above.
  • the method can include: positioning an end ring 30 on a base pipe 32 proximate a seal element 18, and radially compressing a gripping device 36 in the end ring 30, so that the gripping device 36 grips the base pipe 32. Radial compression of the gripping device 36 results from longitudinal displacement of the gripping device 36 relative to the end ring 30.
  • a packer 12 example described above can comprise an end ring 30 positioned proximate a seal element 18 on a base pipe 32, and a circular gripping device 36 which encircles the base pipe 32 and is compressed radially inward by a surface 38 formed in the end ring 30.
  • structures disclosed as being separately formed can, in other examples, be integrally formed and vice versa.

Landscapes

  • 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)
  • Pipe Accessories (AREA)
  • Earth Drilling (AREA)

Abstract

L'invention concerne une garniture étanche comprenant un anneau d'extrémité positionné à proximité d'un joint d'étanchéité sur un tuyau de base et un dispositif de préhension comprimé radialement vers l'intérieur par une surface formée dans l'anneau d'extrémité, la surface encerclant le tuyau de base. Un procédé de construction d'une garniture étanche peut inclure le positionnement d'un anneau d'extrémité sur un tuyau de base à proximité d'un joint d'étanchéité et la compression radiale d'un dispositif de préhension dans l'anneau d'extrémité, de sorte que le dispositif de préhension soit accroché au tuyau de base, la compression radiale du dispositif de préhension résultant du déplacement longitudinal du dispositif de préhension par rapport à l'anneau d'extrémité.
PCT/IB2012/000384 2012-03-01 2012-03-01 Anneau d'extrémité de garniture étanche avec dispositif de préhension pour tuyau de base WO2013128220A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/IB2012/000384 WO2013128220A1 (fr) 2012-03-01 2012-03-01 Anneau d'extrémité de garniture étanche avec dispositif de préhension pour tuyau de base
US14/371,641 US20150027704A1 (en) 2012-03-01 2012-03-01 Packer end ring with device for gripping base pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2012/000384 WO2013128220A1 (fr) 2012-03-01 2012-03-01 Anneau d'extrémité de garniture étanche avec dispositif de préhension pour tuyau de base

Publications (1)

Publication Number Publication Date
WO2013128220A1 true WO2013128220A1 (fr) 2013-09-06

Family

ID=49081702

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2012/000384 WO2013128220A1 (fr) 2012-03-01 2012-03-01 Anneau d'extrémité de garniture étanche avec dispositif de préhension pour tuyau de base

Country Status (2)

Country Link
US (1) US20150027704A1 (fr)
WO (1) WO2013128220A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9739112B2 (en) * 2014-10-27 2017-08-22 Tier 1 Energy Solutions Inc. Downhole packer
US20160177660A1 (en) * 2014-12-19 2016-06-23 Isolation Technologies LLC Packer
KR102340892B1 (ko) 2021-02-26 2021-12-17 엔스펙트라 주식회사 전하를 띄는 양자점 마이크로캡슐 잉크 및 이의 제조 방법

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818987A (en) * 1972-11-17 1974-06-25 Dresser Ind Well packer and retriever
US4407514A (en) * 1982-12-27 1983-10-04 Acf Industries, Incorporated Wellhead casing packing support
WO2011110819A2 (fr) * 2010-03-11 2011-09-15 Tendeka B.V. Ensemble joint d'étanchéité et procédé de formation d'un ensemble joint d'étanchéité

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818987A (en) * 1972-11-17 1974-06-25 Dresser Ind Well packer and retriever
US4407514A (en) * 1982-12-27 1983-10-04 Acf Industries, Incorporated Wellhead casing packing support
WO2011110819A2 (fr) * 2010-03-11 2011-09-15 Tendeka B.V. Ensemble joint d'étanchéité et procédé de formation d'un ensemble joint d'étanchéité

Also Published As

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US20150027704A1 (en) 2015-01-29

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