WO2022031509A1 - Garniture d'étanchéité de piston hydraulique à diamètre variable et obturateur anti-éruption à piston hydraulique l'utilisant - Google Patents

Garniture d'étanchéité de piston hydraulique à diamètre variable et obturateur anti-éruption à piston hydraulique l'utilisant Download PDF

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Publication number
WO2022031509A1
WO2022031509A1 PCT/US2021/043654 US2021043654W WO2022031509A1 WO 2022031509 A1 WO2022031509 A1 WO 2022031509A1 US 2021043654 W US2021043654 W US 2021043654W WO 2022031509 A1 WO2022031509 A1 WO 2022031509A1
Authority
WO
WIPO (PCT)
Prior art keywords
ram
packer
shutter assembly
blowout preventer
rigid
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.)
Ceased
Application number
PCT/US2021/043654
Other languages
English (en)
Inventor
Simon Oman
Laslo Olah
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.)
Texas Institute of Science Inc
Original Assignee
Texas Institute of Science 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 Texas Institute of Science Inc filed Critical Texas Institute of Science Inc
Publication of WO2022031509A1 publication Critical patent/WO2022031509A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
    • E21B33/061—Ram-type blow-out preventers, e.g. with pivoting rams

Definitions

  • This invention relates, in general, to pressure control systems in downhole oil and gas drilling operations and, in particular, to a variable bore ram packer for a ram-type blowout preventer and a ram-type blowout preventer using the same.
  • Ram-type blowout preventers are part of pressure control systems utilized in oil and gas drilling operations to control unexpected wellbore pressure increases or spikes known as “kicks.”
  • Typical ram-type blowout preventers use ram packers having inserts of hard rubber as a sealing element which allows only limited extension in order to conform to different pipe diameters.
  • Such ram packers having inserts of hard rubber sealing elements may become damaged and, as a result, appropriate seals are not maintained against different pipe diameters. Accordingly, there is a need for improved ram packers for ram-type blowout preventers that have the benefit of maintaining seals across a range of pipe diameters over the life of the hydrocarbon producing well.
  • variable bore ram packer in a ram-type blowout preventer and a ram-type blowout preventer using the same that would improve upon existing limitations in functionality. It would also be desirable to enable a mechanical-based solution that would provide enhanced operational efficiency and sealing across a range of pipe diameters over the life of the hydrocarbon producing well.
  • a variable bore ram packer for a ram-type blowout preventer and a ram-type blowout preventer using the same are disclosed.
  • some embodiments of the variable bore ram packer include an upper shutter assembly that is vertically spaced from a lower shutter assembly with a packer member vertically interposed therebetween.
  • Each of the upper shutter assembly and the lower shutter assembly opening and closing as a mechanical iris diaphragm having a central partial aperture sized to fit closely about a tubular member upon close of the ram-type blowout preventer.
  • the packer member is an elastomeric material having a central semi-elliptical opening sized to fit between the upper shutter assembly and the lower shutter assembly while fitting closely about the tubular member upon close of the ram-type blowout preventer.
  • some embodiments of the ram-type blowout preventer include a body with a pair of opposing ram blocks positioned within the body.
  • Each of the ram blocks have a variable bore ram packer held in a plurality of recesses.
  • each of the variable bore ram packers include an upper shutter assembly that is vertically spaced from a lower shutter assembly with a packer member vertically interposed therebetween.
  • Each of the upper shutter assembly and the lower shutter assembly opening and closing as a mechanical iris diaphragm having a central partial aperture sized to fit closely about a tubular member upon close of the ram-type blowout preventer.
  • the packer member is an elastomeric material having a central semi-elliptical opening sized to fit between the upper shutter assembly and the lower shutter assembly while fitting closely about the tubular member upon close of the ram-type blowout preventer.
  • Figure 1 is a perspective view depicting one embodiment of a ram-type blowout preventer utilizing a variable bore ram packer, according to the teachings presented herein;
  • Figure 2 is a top plan view of an upper shutter assembly depicted in figure 1;
  • Figure 3 is a top plan view of the ram-type blowout preventer utilizing a variable bore ram packer depicted in figure 1 in an initial position of deployment;
  • Figure 4 is a top plan view of the ram-type blowout preventer utilizing a variable bore ram packer depicted in figure 1 in a first phase of deployment;
  • Figure 5 is a top plan view of the ram-type blowout preventer utilizing a variable bore ram packer depicted in figure 1 in a second phase of deployment;
  • Figure 6 is a top plan view of the ram-type blowout preventer utilizing a variable bore ram packer depicted in figure 1 in a third phase of deployment.
  • a body 12 includes a ram block 14 positioned within the body 12.
  • the body 12 includes a pair of opposing ram blocks.
  • the ram block 14 includes recesses 16.
  • a variable bore ram packer 18 is held in the recesses 16 of the ram block 14.
  • the variable bore ram packer 18 includes an upper shutter assembly 20, a lower shutter assembly 22, and a packer member 24.
  • the upper shutter assembly 20 is vertically spaced from the lower shutter assembly 22 with the packer member 24 interposed between the upper shutter assembly 20 and the lower shutter assembly 22.
  • the upper shutter assembly 20 includes a rigid base plate 40 having rigid inserts 42, including, for example, rigid inserts 44, 46, coupled thereto by an iris shutter subassembly 48.
  • the rigid inserts 44 have a central partial aperture 50 sized to fit closely about a tubular member upon close of the ram-type blowout preventer 10.
  • the lower shutter assembly 22 has a similar structure and function. That is, the lower shutter assembly 22 includes a rigid base plate having rigid inserts coupled thereto by an iris shutter subassembly.
  • the rigid inserts may have a central partial aperture sized to fit closely about a tubular member upon close of the ram-type blowout preventer 10.
  • each of the upper shutter assembly 20 and the lower shutter assembly 22 may cause the rigid inserts 44 to open and close via the respective iris shutter subassembly 48 as a mechanical iris diaphragm 116.
  • the iris shutter subassembly 48 includes a driver member 60 biasedly coupled by a coiled spring 62 to the ram block 14 of the ram-type blowout preventer 10.
  • the driver member 60 has slots 64, 66 therein.
  • a linkage member 68 is housed within the rigid base plate 40.
  • the linkage member 68 includes an outer connection surface 70 and an inner connection surface such that the outer connection surface 70 is moveably secured within the slot 64.
  • the inner connection surface may be coupled to the rigid insert 44.
  • a linkage member 72 is housed within the rigid base plate 40 and, similar to the linkage member 68, the linkage member 72 has an outer connection surface 74 and an inner connection surface.
  • the outer connection surface 74 may be moveably secured within the slot 66 and the inner connection surface may be coupled to the rigid insert 46.
  • the rigid base plate 40 may comprise a high strength steel.
  • the rigid inserts 42 may also comprise a high strength steel.
  • the linkage member 68 and the linkage member 72 are radially separated such that the rigid insert 44 and the rigid insert 46 move inward in forming the central partial aperture 50.
  • the linkage member 68 and the linkage member 72 are radially gathered closer together such that the rigid insert 44 and the rigid insert 46 move outward in forming the central partial aperture 50.
  • the packer member 24 may be an elastomeric material 80 having a central semielliptical opening 82 sized to fit between the upper shutter assembly 20 and the lower shutter assembly 22 while fitting closely about the tubular member upon close of the ram-type blowout preventer 10.
  • the packer member 24 may include a high strength steel embedded with the elastomeric material.
  • the ram-type blowout preventer 10 includes the body 12 having the ram block 14 positioned within the body 12 as well as a ram block 102.
  • the ram block 102 is part of the body 12 of the ram-type blowout preventer 10 and the ram block 102 is positioned in an opposing relationship to the ram block 14.
  • the ram block 14 includes the variable bore ram packer 18 and similarly, the ram block 102 includes a variable bore ram packer 104.
  • a first exemplary phase of operation which begins with figure 3 and ends at figure 4, hydraulic cylinders are actuated in the ram-type blowout preventer 10 and the ram blocks 14, 102 move toward each other such that the base plate 40 of the variable bore ram packer 18 contacts a base plate 106 of the variable bore ram packer 104.
  • the packer member 24 of the variable bore ram packer 18 and a packer member 108 of the variable bore ram packer 104 are spatially separated and not in contact.
  • a second exemplary phase of operation which begins with figure 4 and ends with figure 5, once contact is made between the base plates 40, 106, the base plates no longer advance; rather, as the ram blocks 14, 102 continue to move forward, the base plates 40, 106 are pushed inside the ram blocks 14, 102 and the coiled spring 62 and a coiled spring 110 compress.
  • the drive members including drive member 60, of the iris shutter subassembly 48 of the variable bore ram packer 18 and drive members 112 of ins shutter subassembly 114 of the variable bore ram packer 104 each begin closing as a mechanical iris diaphragm 116.
  • the packer member 24 of the variable bore ram packer 18 and the packer member 108 of the variable bore ram packer 104 are in contact.
  • a third exemplary phase of operation which begins with figure 5 and ends with figure 6, once contact is made between the packer member 24 of the variable bore ram packer 18 and the packer member 108 of the variable bore ram packer 104, the ram blocks 14, 102 continue to move forward causing the iris shutter subassemblies 48, 114 to continue to operate as the mechanical iris diaphragm 116.
  • the rigid inserts 42 of the upper and lower shutter assemblies 20, 22 of the ram block 14 and rigid inserts belonging to the upper and lower shutter assemblies of the ram block 102 begin moving together to form the central partial aperture 50 sized to fit closely about the tubular member.
  • the packer member 24 of the variable bore ram packer 18 and the packer member 108 of the variable bore ram packer 104 flow toward the tubular member behind the respective rigid inserts 44, 116.
  • the ram blocks 14, 102 continue to move forward and the packer members 24, 108 fit closely about the tubular member to close any gaps.
  • the pressure inside the packer members 24, 108 increases and stops the movement of the ram blocks 14, 102.
  • the sealing process is then complete and the packer members 24, 108 provide the elastic sealing insert necessary to achieve constant pressure across the contact surface of the ram-type blowout preventer 10 and the tubular member.

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)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)

Abstract

Sont divulgués ici une garniture d'étanchéité de piston hydraulique à diamètre variable (18) et un obturateur anti-éruption à piston hydraulique (10) l'utilisant. Dans un mode de réalisation de la garniture d'étanchéité de piston hydraulique à diamètre variable (18), un ensemble volet supérieur (20) est verticalement espacé d'un ensemble volet inférieur (22), un élément de garniture d'étanchéité (24) étant intercalé verticalement entre eux. L'ensemble volet supérieur (20) et l'ensemble volet inférieur (22) s'ouvrent et se ferment en tant que diaphragme-iris mécanique (116) comportant une ouverture partielle centrale (50) dimensionnée pour s'adapter étroitement autour d'un élément tubulaire lors de la fermeture de l'obturateur anti-éruption à piston hydraulique (10). L'élément de garniture d'étanchéité (24) est un matériau élastomère (80) présentant une ouverture centrale semi-elliptique (82) dimensionnée pour s'adapter entre l'ensemble volet supérieur (20) et l'ensemble volet inférieur (22) tout en s'adaptant étroitement autour de l'élément tubulaire lors de la fermeture de l'obturateur anti-éruption à piston hydraulique (10).
PCT/US2021/043654 2020-08-04 2021-07-29 Garniture d'étanchéité de piston hydraulique à diamètre variable et obturateur anti-éruption à piston hydraulique l'utilisant Ceased WO2022031509A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202063061149P 2020-08-04 2020-08-04
US63/061,149 2020-08-04

Publications (1)

Publication Number Publication Date
WO2022031509A1 true WO2022031509A1 (fr) 2022-02-10

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PCT/US2021/043654 Ceased WO2022031509A1 (fr) 2020-08-04 2021-07-29 Garniture d'étanchéité de piston hydraulique à diamètre variable et obturateur anti-éruption à piston hydraulique l'utilisant

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WO (1) WO2022031509A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114893143A (zh) * 2022-07-14 2022-08-12 威海海洋职业学院 一种海洋油井井口装置
CN115199235A (zh) * 2022-07-15 2022-10-18 山东省煤田地质局第一勘探队 一种钻进设备用常封式防喷器及防喷方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040079909A1 (en) * 2002-10-23 2004-04-29 Cooper Cameron Corporation Side retainer plate for variable bore ram packer for a ram type blowout preventer
US20040164494A1 (en) * 2003-02-20 2004-08-26 Raul Araujo BOP assembly with metal inserts
US20050006087A1 (en) * 2003-07-11 2005-01-13 Melancon Jeffrey T. Variable bore ram
US20120227987A1 (en) * 2011-03-09 2012-09-13 National Oilwell Varco, L.P. Method and apparatus for sealing a wellbore
WO2019226155A2 (fr) * 2018-05-22 2019-11-28 Kinetic Pressure Control, Ltd. Dispositif et procédé de commande de pression annulaire de puits de type à valve d'iris

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040079909A1 (en) * 2002-10-23 2004-04-29 Cooper Cameron Corporation Side retainer plate for variable bore ram packer for a ram type blowout preventer
US20040164494A1 (en) * 2003-02-20 2004-08-26 Raul Araujo BOP assembly with metal inserts
US20050006087A1 (en) * 2003-07-11 2005-01-13 Melancon Jeffrey T. Variable bore ram
US20120227987A1 (en) * 2011-03-09 2012-09-13 National Oilwell Varco, L.P. Method and apparatus for sealing a wellbore
WO2019226155A2 (fr) * 2018-05-22 2019-11-28 Kinetic Pressure Control, Ltd. Dispositif et procédé de commande de pression annulaire de puits de type à valve d'iris

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114893143A (zh) * 2022-07-14 2022-08-12 威海海洋职业学院 一种海洋油井井口装置
CN114893143B (zh) * 2022-07-14 2022-09-09 威海海洋职业学院 一种海洋油井井口装置
CN115199235A (zh) * 2022-07-15 2022-10-18 山东省煤田地质局第一勘探队 一种钻进设备用常封式防喷器及防喷方法
CN115199235B (zh) * 2022-07-15 2023-09-29 山东省煤田地质局第一勘探队 一种钻进设备用常封式防喷器及防喷方法

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