US3591125A - Multiple-section well blowout preventer packer - Google Patents

Multiple-section well blowout preventer packer Download PDF

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Publication number
US3591125A
US3591125A US767193A US3591125DA US3591125A US 3591125 A US3591125 A US 3591125A US 767193 A US767193 A US 767193A US 3591125D A US3591125D A US 3591125DA US 3591125 A US3591125 A US 3591125A
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United States
Prior art keywords
sections
combination
faces
section
force transmission
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Expired - Lifetime
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US767193A
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English (en)
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George E Lewis
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Hydril LLC
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Hydril LLC
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    • 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

Definitions

  • the disclosure concerns a well blowout preventer packer that includes multi E2lb 33/06 ple elastomer body sec- 251/], 212; tions formed to be arranged in side-by-side circular series rela- 84; 277/28, 32, 73, 121 122, 127, 185, tion for coaction to seal offa well in response to simultaneous constriction.
  • This invention relates generally to well blowout prevention, and more particularly concerns improvements in constrictable packers used in such prevention to reduce, or close, well openings.
  • the invention is embodied in a packercomprised of multiple elastomer body sections adapted to be arranged inside-by-side circular series relation to define a central opening, the sections'having outwardly presented faces to receive constricting force transmission, and inwardly presented faces inwardly deformable to reduce the size of the central opening in response to such number of such sections may be individually assembled into a packer ring in a blowout preventer.
  • the resultant ring or annulus will then function in the same manner as an integral annulus as respects sealing .off a well, as described in the above referred to Knox patent.
  • the wedge-shaped body sections are capable of molding with far less involvement of intricacy.
  • each of the above-referred-to body sections at least one rigid anchor member extending therein 'for holding or anchoring the elastomer material during its extreme extrusion during well sealoff. If, for example,.four quadrant-shaped sections are to be provided, then each would contain at least two or three of the anchor members. Typically, the anchor members in adjacent sections will be everywhere spaced apart, whereby the sections will abut one another at their elastomer side faces which transmit loading and extrude during constriction.
  • the shoulders may be defined bytongue-and-groove elements as will be described.
  • the. invention contemplates a method of forming such a packer, including providing the sections as described, arranging'sufficient of the sections in a circular pattern to preventer for reception of constricting force.
  • FIG. 1 is an elevation take in section showing the multiplesection packer of the invention installed. in a blowout preventer;
  • FIG. 2 is a fragmentary planview showing of several preventer sections assembled together inan annular packer
  • FIG. 3 is a section taken on line 3-3 of FIG. 2;
  • FIG. 4 is a section taken on line 4-4 of FIG. 3
  • FIG. 5 is a fragmentary elevation illustrating deformation of a body section of the-invention into sealing engagement with a pipe or other tubular element in a well;
  • FIG. 6 is an enlarged fragmentary elevation illustrating sembly of multiple sections into a packer annulus; 7
  • FIG. 7 and 8 are top and bottom plan views respectively of the body section seen in FIG. 6, and I FIG.'9 illustrates a modified body section.
  • FIG. 1 showing a typical blowout prevention assembly 10 in which the invention is usable.
  • the assembly includes a body or housing member 11, having concentric cylindrical surfaces l2, l3, l4 and 15 of progressively increasingly diameter, and associated with body annular sections 16-18.
  • a cap 19 is releasably held to the outer and upper section 18 as by a split ring 20 overlying the cap shoulder 21 and received in annular groove 22 found in the body.
  • the cap seats against a body shoulder 23 and fasteners 20a hold the ring 20 to the cap.
  • a cylindrical section 24 of the cap forms a bore 25 through which tubular goods such as well casing 26 or pipe is run vertically.
  • the assembly 10 also includes a packer actuator 30, which has a lower piston portion 31 having piston fit between surfaces 13 and'l4, with suitable annular seal rings 32 and 33 c'arried as shown.
  • An actuator sleeveportion 34 pilots or guides against body cylindrical surface 13 as the actuator strokes vertically during constriction and release of the packer assembly to be described.
  • fluid pressure may be applied as from a source 35 and via porting 36 to the underside of the piston portion 31 to raise the actuator 30, the latter being free to drop upon release of such applied pressure.
  • the body 11 is also shown as supported on a stack of equipment which may include an annular member 38 having side outlet-ports 39 through which pressure flow from the well may be diverted upon operation of the blowout preventer to seal off about casing 26 or other pipe, or otherwise to seal ofi the opening through the preventerwhen no such piping is present.
  • a stack of equipment which may include an annular member 38 having side outlet-ports 39 through which pressure flow from the well may be diverted upon operation of the blowout preventer to seal off about casing 26 or other pipe, or otherwise to seal ofi the opening through the preventerwhen no such piping is present.
  • the packer assembly 40 comprises a circular series of wedge-shaped elastomer body sections 41 defining a central opening 42 and having outwardly presented faces 43 to receive constricting force application or transmission, and inwardly presented faces 44 which are inwardly deformable to reduce the size of the opening 42 i response to such force transmissions.
  • Such force transmission by the conical portion 45 of the actuator is better seen in FIG. 5, the actuator having an outer terminal 450 which guides against body surface 15 as the actuator moves upwardly. Note in FIG. 5 that the extreme inner surfaces 44 of the sections are in engagement with the casing 26 to effect the seal. In this regard, and as will appear, the inner surfaces 44a of the sections which are identified in FIG.
  • well pressure may communicate freely between the packer andthe actuator portion 45, as via the openings 46 between the outer extremities of adjacent body sections 41 better seen in FIG. 2.
  • Such pressure exerted downwardly on the actuator cone 45 is counteracted by the pressure from source 35 to move the actuator upwardly.
  • the sections 41 each have opposite side faces 50 and 51 through which compressive force is transmitted (as indicated by arrows 52 and 53 in FlG. 2) between the sections during constricting force transmission by the sections as described.
  • the individual sections then coact to seal off at their interfaces 50 and 51, blocking escape of well pressure fluid; further, such coaction results in extrusion the elastomer including the interfaces and sealing off of the well in a manner similar to that described in US. Pat. No. 2,609,836, where an integral elastomer annulus is utilized.
  • the individual sections 41 may be molded with much simpler equipment, and then cemented together before installing into the assembly 10. For this purpose, rubber cement may be used.
  • the sections 41 are further characterized in their illustrated form, as having side faces 50 and 51 which extend in generally axial radial planes, i.e. with taper toward the central axis 53.
  • the sections 41 may have interfitting shoulders proximate the side faces, which facilitate assembly of the sections into an annular packer for placement into the blowout preventer housing.
  • the shoulders are defined by a cylindrical protrusion or boss 57 at side face 51 of one section, and a recess 58 sunk in side face 50 of the adjacent section, the protrusion received in and fitting the recess.
  • Such interfitting may be carried out outside the housing 1 1, as for example on a dished form 59 as seen in FIG. 6, whereby a complete packer with interfitting sections 41 may be assembled and supported at surface 60. Thereafter, the packer may be lifted into the preventer housing, as by means of fasteners 61 received downwardly into threaded openings 62 in the anchor structure of certain sections 41, as seen in H0. 3.
  • a further feature concerns the provision of rigid anchor members extending in the sections, as for example in the manner to be described, in orderto retain the elastomer material against well pressure induced upward extrusion out of the preventer assembly.
  • the illustrated anchor members 64 in adjacent sections are seen to be everywhere spaced apart, i.e. typically spaced from the planes defined by the interfaces 50 and 51, to allow inward extrusion of the elastomer material proximate those faces.
  • the interfitting of the sections as at bosses 57 and recesses 58 tend to prevent radial slippage of one section relative to another during inward and outward bodily travel of the sections as controlled by the actuator. Also, such interfitting makes proper alignment of the sections for cementing purposes much easier.
  • Each anchor member 64 in the illustrations, includes upper and lower metal plates 65 and 66 which extend generally horizontally, and ribbing 67 interconnecting the plates and ex tending within the section elastomer material 69 in spaced relation to the side faces 50 and 51. Small bosses 68 project from the ribbing 67 and into the elastomer for anchoring the latter to the ribbing during extrusion. Note that the material 69 loops about, and is bonded to, the ribbing, as for example at 70 and 71, so that it remains anchored thereto .under all extrusion conditions. Referring back to FIG. 1, the plates 65 and 66 are respectively confined between the cap underside 72 and the upper terminal 27 of the housing member 16, during inward and outward travel of the sections 41.
  • FIG. 9 it illustrates an elastomer body section 41a of somewhat different configuration, in that the annular dimension betweenside faces 50a and 51a is substantial] greater than characteristic of section 41 as seen in FIG. Fl
  • a circular series of elastomer body sections defining a central opening and having outwardly presented faces to receive constricting force transmission and inwardly presented faces inwardly deformable to reduce the size of said opening in response to said force transmission
  • said sections each having opposite side faces through which compressive force is transmitted between the sections during said constricting force transmission, and there being interfitting shoulder means on adjacent sections for blocking relative displacement of said adjacent sections during inward deformation thereof in response to said constricting force transmission.
  • each anchor member comprises upper and lower plates and ribbing interconnecting the plates and extending within the body section in spaced relation to and approximately midway between the section opposite side faces.
  • blowout preventer means carrying said sections for bodily movement toward and away from said opening.
  • said shoulder means are defined by a protrusion at the side face of one section and a recess sunk in the side face of the adjacent section, said protrusion received in said recess.
  • a well blowout preventer comprising: a. a circular series of elastomer body sections defining a central opening and having outwardly presented faces to receive constricting force transmission and inwardly presented faces inwardly deformable to reduce the size of said opening in response to said force transmission, and b. said sections each having opposite side faces through which compressive force is transmitted between the sections during said constricting force transmission, c. the opposed faces of adjacent sections being bonded together.
  • the combination of claim 9 including interfitting shoulder means on the sections proximate the bonded together opposed faces of adjacent sections for blocking relative displacement of such adjacent sections during inward deformation thereof in response to said constricting force transmission.
  • each anchor member including upper and lower plates and ribbing interconnecting said plates and extending within each said section in spaced relation to said opposite sides thereof.

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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)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Gasket Seals (AREA)
  • Bridges Or Land Bridges (AREA)
US767193A 1968-10-14 1968-10-14 Multiple-section well blowout preventer packer Expired - Lifetime US3591125A (en)

Applications Claiming Priority (1)

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US76719368A 1968-10-14 1968-10-14

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US (1) US3591125A (no)
JP (1) JPS5018842B1 (no)
DE (1) DE1950941A1 (no)
FR (1) FR2020674A1 (no)
GB (1) GB1238275A (no)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3728041A (en) * 1971-10-04 1973-04-17 Gen Electric Fluidic seal for segmented nozzle diaphragm
US4098516A (en) * 1977-08-15 1978-07-04 Hydril Company Blowout preventer packing unit with slanted reinforcing inserts
US4325404A (en) * 1978-08-30 1982-04-20 Larsen Peder M Valve claw to be situated at the end of a pipe to mount a closing valve
US4339107A (en) * 1981-08-17 1982-07-13 Oil Tool Molded Products, Inc. Well blowout preventer packer assembly and packer modules therefor
US4447037A (en) * 1981-06-25 1984-05-08 Hydril Company Well blowout preventer, and packing element
US4452421A (en) * 1981-06-25 1984-06-05 Hydril Company Well blowout preventer, and packing element
US4461448A (en) * 1981-06-25 1984-07-24 Hydril Company Well blowout preventer, and packing element
US4605195A (en) * 1985-05-01 1986-08-12 Hydril Company Annular blowout preventer packing unit
US4657263A (en) * 1983-04-18 1987-04-14 Hydril Company Annular packing unit and insert
US4900067A (en) * 1985-04-26 1990-02-13 Vetco Gray Inc. Retrievable packoff with an embedded flexible, metallic band
US5283957A (en) * 1993-02-25 1994-02-08 Chou Ming Fu Inclinometer for wheeled cycles
US5507465A (en) * 1995-04-07 1996-04-16 Borle; Del Blow-out preventer
US5851013A (en) * 1997-07-03 1998-12-22 Hydril Company Blowout preventer packing element with metallic inserts
US20110179620A1 (en) * 2010-01-22 2011-07-28 GM Global Technology Operations LLC Seal protector assembly
US20160222749A1 (en) * 2013-08-27 2016-08-04 Enovate Systems Limited Improved annular blow out preventer

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US835079A (en) * 1905-01-09 1906-11-06 Firm Of C Medtner And E Seeger Cover or wearing-surface for wheel-tires and other objects exposed to wear.
US1191876A (en) * 1912-12-30 1916-07-18 James Walter Henry Dew Process of manufacturing solid rubber or like tires and treads of pneumatic tires.
US1586923A (en) * 1924-02-18 1926-06-01 Elvin E Townsend Well-drilling equipment
US1942489A (en) * 1932-08-23 1934-01-09 S R Dresser Mfg Co Gasket
US2129531A (en) * 1936-11-20 1938-09-06 Abegg & Reinhold Co Tubing blow-out preventer
US2144831A (en) * 1935-01-14 1939-01-24 Raybestos Manhattan Inc Friction clutch facing
US2278756A (en) * 1940-05-27 1942-04-07 Gen Tire & Rubber Co Method of forming tube or gasket angles
US2609836A (en) * 1946-08-16 1952-09-09 Hydril Corp Control head and blow-out preventer
US2855172A (en) * 1956-04-06 1958-10-07 Cameron Iron Works Inc Blowout preventer and ram therefor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1206889A (fr) * 1958-05-21 1960-02-12 Cameron Iron Works Inc Vanne d'éruption pour puits de forage

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US835079A (en) * 1905-01-09 1906-11-06 Firm Of C Medtner And E Seeger Cover or wearing-surface for wheel-tires and other objects exposed to wear.
US1191876A (en) * 1912-12-30 1916-07-18 James Walter Henry Dew Process of manufacturing solid rubber or like tires and treads of pneumatic tires.
US1586923A (en) * 1924-02-18 1926-06-01 Elvin E Townsend Well-drilling equipment
US1942489A (en) * 1932-08-23 1934-01-09 S R Dresser Mfg Co Gasket
US2144831A (en) * 1935-01-14 1939-01-24 Raybestos Manhattan Inc Friction clutch facing
US2129531A (en) * 1936-11-20 1938-09-06 Abegg & Reinhold Co Tubing blow-out preventer
US2278756A (en) * 1940-05-27 1942-04-07 Gen Tire & Rubber Co Method of forming tube or gasket angles
US2609836A (en) * 1946-08-16 1952-09-09 Hydril Corp Control head and blow-out preventer
US2855172A (en) * 1956-04-06 1958-10-07 Cameron Iron Works Inc Blowout preventer and ram therefor

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3728041A (en) * 1971-10-04 1973-04-17 Gen Electric Fluidic seal for segmented nozzle diaphragm
US4098516A (en) * 1977-08-15 1978-07-04 Hydril Company Blowout preventer packing unit with slanted reinforcing inserts
FR2400612A1 (fr) * 1977-08-15 1979-03-16 Hydril Co Garniture d'etancheite a pieces rapportees de renfort obliques, pour obturateur anti-eruption
US4325404A (en) * 1978-08-30 1982-04-20 Larsen Peder M Valve claw to be situated at the end of a pipe to mount a closing valve
US4447037A (en) * 1981-06-25 1984-05-08 Hydril Company Well blowout preventer, and packing element
US4452421A (en) * 1981-06-25 1984-06-05 Hydril Company Well blowout preventer, and packing element
US4461448A (en) * 1981-06-25 1984-07-24 Hydril Company Well blowout preventer, and packing element
US4339107A (en) * 1981-08-17 1982-07-13 Oil Tool Molded Products, Inc. Well blowout preventer packer assembly and packer modules therefor
US4657263A (en) * 1983-04-18 1987-04-14 Hydril Company Annular packing unit and insert
US4900067A (en) * 1985-04-26 1990-02-13 Vetco Gray Inc. Retrievable packoff with an embedded flexible, metallic band
US4605195A (en) * 1985-05-01 1986-08-12 Hydril Company Annular blowout preventer packing unit
US5283957A (en) * 1993-02-25 1994-02-08 Chou Ming Fu Inclinometer for wheeled cycles
US5507465A (en) * 1995-04-07 1996-04-16 Borle; Del Blow-out preventer
US5851013A (en) * 1997-07-03 1998-12-22 Hydril Company Blowout preventer packing element with metallic inserts
US20110179620A1 (en) * 2010-01-22 2011-07-28 GM Global Technology Operations LLC Seal protector assembly
US8756784B2 (en) * 2010-01-22 2014-06-24 Gm Global Technology Operations, Llc Seal protector assembly
US20160222749A1 (en) * 2013-08-27 2016-08-04 Enovate Systems Limited Improved annular blow out preventer
US10883330B2 (en) * 2013-08-27 2021-01-05 Enovate Systems Limited Annular blow out preventer

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Publication number Publication date
JPS5018842B1 (no) 1975-07-02
GB1238275A (no) 1971-07-07
DE1950941A1 (de) 1970-04-23
FR2020674A1 (no) 1970-07-17

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