US3817326A - Ram-type blowout preventer - Google Patents

Ram-type blowout preventer Download PDF

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Publication number
US3817326A
US3817326A US00263602A US26360272A US3817326A US 3817326 A US3817326 A US 3817326A US 00263602 A US00263602 A US 00263602A US 26360272 A US26360272 A US 26360272A US 3817326 A US3817326 A US 3817326A
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Prior art keywords
ram
extending
seal
bore
rams
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US00263602A
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English (en)
Inventor
M Meynier
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Cooper Industries LLC
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Cameron Iron Works Inc
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Priority to US00263602A priority Critical patent/US3817326A/en
Application filed by Cameron Iron Works Inc filed Critical Cameron Iron Works Inc
Priority to JP6645173A priority patent/JPS549565B2/ja
Priority to GB5096374A priority patent/GB1409473A/en
Priority to GB5096274A priority patent/GB1409472A/en
Priority to GB2847773A priority patent/GB1409471A/en
Priority to DE2330568A priority patent/DE2330568C3/de
Priority to US05/466,049 priority patent/US3946806A/en
Application granted granted Critical
Publication of US3817326A publication Critical patent/US3817326A/en
Priority to JP6354975A priority patent/JPS5410327B2/ja
Assigned to COOPER INDUSTRIES, INC. reassignment COOPER INDUSTRIES, INC. ASSIGNS THE ENTIRE INTEREST, EFFECTIVE 10/29/89. Assignors: CAMERON IRON WORKS, INC., A CORP OF DE
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E21B33/061—Ram-type blow-out preventers, e.g. with pivoting rams
    • E21B33/062—Ram-type blow-out preventers, e.g. with pivoting rams with sliding rams
    • E21B33/063—Ram-type blow-out preventers, e.g. with pivoting rams with sliding rams for shearing drill pipes
    • 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
    • E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
    • E21B29/08—Cutting or deforming pipes to control fluid flow

Definitions

  • Eickenroht ABSTRACT There is disclosed a ram-type blowout preventer for shearing a pipe which may be disposed within its bore and then sealing across the bore.
  • This invention relates generally to ram-type blowout preventers; and, more particularly, to the type of blowout preventer having means on the rams for shearing a pipe which may be disposed within its bore and then sealing across the bore.
  • a ram-type blowout preventer comprises a housing having a bore through it and adapted to be connected to a wellhead in alignment with the well bore.
  • Rams are movable within guideways extending from the bore between outer positions removed from the bore and inner positions across the bore and engaging with one another to seal off the bore.
  • the inner ends of the rams may have recesses for sealing about a pipe within the bore, or they may be flat or otherwise complementary for sealing across an open bore.
  • the preventer In the drilling of offshore wells from vessels at the water level, the preventer may be mounted on a wellhead located aconsiderable distance below water level. In the event of a storm or other emergency condition, it may be desirable to move the vessel from the well site, and circumstances may not permit the drill string to be pulled from the well. In, order to meet this and other eventualities, it has been proposed to providerams with blades having cutting edges for shearing the pipe as the rams move to their inner positions, and with seal means so arranged as to seal between the rams and between each ram and the preventer housing to close the bore upon shearing of the pipe.
  • Another object is to provide a blowout preventer of the type above described in which the seal means of each ram is protected against damage by the sheared pipe as the rams are moved inwardly to shear the pipe and close off the bore.
  • a further object of the present invention is to provide a blowout preventer of the type above described in which, as in the aforementioned prior patent, the rams seal entirely across their widths.
  • each ram comprises a body having shearing means including a cutting edge across its inner end and a surface extending outwardly of the cutting edge.
  • the ram bodies are arranged in the guideways of the housing for movement in an axial direction with these surfaces facing in opposite directions in generally the same plane so that the cutting edge of each body moves closely past the cutting edge and over the surface of the other body to shear a pipe within the bore as the rams move to their inner positions.
  • a seal member is carried by one of the ram bodies on and across the width of its surface and substantially flush therewith for disposal opposite the surface of the other ram body, and thus for sealing between said surfaces, when the rams have been so moved. More particularly, this seal member is cooperable with additional seal means portions carried by the ram bodies for sealing between the ram bodies at opposite ends of said seal member and between each ram body and its guideway, so as to seal off the bore of the housing when the ram bodies are moved to their inner positions.
  • each surface on the ram bodies are of such outward extent as to provide space for the cut ends of the pipes when the rams have been moved to their inner positions, and thus permit the ram bodies to move to their inner positions to seal off the bore of the housing upon shearing of the pipe therein. More particularly, each surface extends outwardly to a wall which extends from the outer end of the surface to the outside, that is the top or bottom of the ram body, to provide a recess for receiving a cut end of the pipe between the inner end of one ram body and the wall of the other ram body.
  • said seal means includes faces abuttable with one another so as to deform the seal means and seal member into sealing engagement as said ram bodies move into their inner positions.
  • the seal means also includes parts on their inner sides past which the other ram moves, following abutment of the faces of said seal means, to protect deformable material of the seal means against damage by the ram bodies.
  • each ram body has flanges which extend from its inner end to provide surfaces which face oppositely to surfaces on said body on opposite sides of the outwardly extending surfaces on the body, and said seal means comprise side seal parts disposed between said oppositely facing surfaces on the body to engage on their sides with the guideways and with opposite ends of the seal member carried by one of the ram bodies.
  • FIG. 1 is a side view, partly in section and partly in elevation, of a blowout preventer constructed in accordance with the present invention, and with the rams thereof in their outer positions;
  • FIG. 2 is a view similar to FIG. I, but with the rams moved to their inner positions to shear a pipe in the bore of the preventer and seal off the bore;
  • FIG. 3 is an isometric view of the rams removed from the guideways in the preventer housing
  • FIG. 4 is an exploded view of the right-hand ram, as seen from the top and one side thereof;
  • FIG. 5 is an exploded view of the left-hand ram, as seen from the bottom and one side thereof;
  • FIG. 6 is a top view of the rams within the guideways, and moved to their inner positions, as seen along section line 66 of FIG. 2;
  • FIG. 7 is a vertical cross-sectional view of the rams, as seen along section broken line 7-7 of FIG. 6;
  • FIG. 8 is a horizontal sectional view of the rams of FIG. 7, as seen along section broken line 8-8 of FIG. 7.
  • the over-all preventer is shown in FIGS. 1 and 2 to comprise a housing 11 having a bore 12 therethrough and a pair of rams 13A and 13B movable axially within guideways 14 extending laterally from opposite sides of the bore.
  • the lower end of the housing is adapted to be connected to a wellhead in axial alignment with the bore of an underwater well, which may be disposed a substantial distance beneath the water level.
  • the rams are shown in FIG. 1 in their outer positions, wherein they are removed from the bore 12 of the housing to permit a drill pipe 15 to extend therethrough and thus into the well bore.
  • the rams are caused to move between the outer position of FIG. 1 and the inner position of FIG. 2 by means of operators 16 connected to the housing at the outer ends of the ram guideways 14.
  • operators 16 include reciprocating hydraulic actuators releasably connected to the outer ends of the rams, as by means of T slots, as well known in the art.
  • the rams shear pipe 15 and then seal off the bore so as to contain well fluid therebelow.
  • the inner end of blade 19A projects beyond the inner end of flange 20A and has a cutting edge 22A which is of a wide V" shape for cooperation with a similarly shaped cutting edge on the blade of the other ram 138, as will be described below.
  • a cutting edge 22A which is of a wide V" shape for cooperation with a similarly shaped cutting edge on the blade of the other ram 138, as will be described below.
  • With the blade mounted on the carrier its top surface 23A is disposed in a plane perpendicular to the axis of the bore 12 and equidistant from the top and bottom of the carrier.
  • the blade 19A is not as wide, from side to side, as the flange 20A, so that when it is mounted on the carrier, its opposite sides are spaced from the opposite sides of the carrier.
  • a wall 21A extends vertically upwardly from the rear end of the upwardly facing surface provided by the flange 20A to intersect the top of the carrier intermediate its inner and outer ends, and the space above this surface is unobstructed to provide a recess to receive the blade of the other ram and the upper cut end of a pipe.
  • a pair of flanges 24A extend forwardly from the upper, outer corners of wall 21A to provide surfaces which are axially coextensive with and which are parallel and face oppositely to the opposite ends of the upwardly facing surface of flange 20A.
  • these downwardly facing surfaces on flanges 24A are spaced above the upwardly facing surfaces of the flange 20A a distance approximately twice the thickness of the blade 19A so as to permit a blade of the same thickness on the left-hand ram 138 to be moved into the space between the top of blade 19A and the flanges 24A, as will be described below.
  • the seal means mounted on the carrier 18A includes side seal parts 25A and 26A adapted to be mounted on the sides of the carrier, each between a flange 24A and the oppositely facing surface of flange 20A.
  • the outer sides of the side seal parts are curved to form continuations of the curved sides of the ram body carrier for sliding within a guideway 14, and the inner sides of such parts face the opposite sides of the recess.
  • the side seal parts 25A and 26A abut the vertical wall 21A, and protrude inwardly beyond flanges 24A and 20A. Thus, they provide vertical faces 27A and 28A, respectively adapted to abut similar faces on ram 138, as will also be described below.
  • the seal means mounted on carrier 18A also includes a top seal part 29A which is substantially U-shaped and adapted to fit closely within a similarly shaped groove 30A formed over the top and along the opposite sides of the ram body carrier 18A.
  • the opposite ends of the top seal part 29A are notched at 31A so as to fit closely adjacent the upper rear comers of the side seal parts 25A and 26A to provide a continuous sealing surface over the top of the ram and along its opposite sides to its inner end.
  • Top seal part 29A is curved so as to form substantially a continuation of the top and sides of the ram carrier 18A.
  • the opposite ends of the top seal part are provided with pins 32A which are adapted to flt within holes 33A formed in the groove 30A near its opposite ends.
  • a pin 34A extends from the rear end of each side seal part 25A and 26A for fitting within a hole 35A formed in the wall 21A of the carrier near its opposite sides.
  • the holes 33A and 35A on opposite sides of the carrier intersect, and the other ends of the pins 34A are grooved so that with the side seal parts first mounted on the carrier, the top seal part 29A may be moved into position to cause the lower ends of its pins 32A to engage in the grooved portions of the side seal part pin 34A, as shown in FIG. 8, and thus lock the side seal parts in place on the carrier.
  • the outer bottom corner of blade 19A is grooved at 36A to receive a seal part 37A of deformable material for extension across the width of the blade so as to dispose its opposite ends adjacent the inner sides of the side seal parts 25A and 26A.
  • seal part 37A when the seal part 37A is deformed by deformation of the side seal parts, it prevents well fluid from by-passing the blade.
  • each side seal part comprises a body of deformable sealing material having thin rigid plates 38A, 39A and 40A molded to its top, bottom and inner sides, respectively.
  • Each of the top and bottom plates extends lengthwise of each side seal part from its front end for less than its entire length, and each inner plate 40A extends vertically from the top of each side seal part for less than its height and from its rear end longitudinally for less than its length.
  • Top plate 38A has a rearwardly extending leg which is spaced from and along the outer side of side plate 40A, and the side plate has an outwardly extending flange at its outer end which is spaced from and rearward of the rear end of the leg of the top plate.
  • each inner plate 40A extends below the top surface 23A of blade 19A, and a leg 41A extends downwardly from the lower surface of each flange 24A to provide a surface closely adjacent the upper rear corner of the plate 40A, which surface cooperates with shear blade 19A to prevent plate 40A from being pushed into the space in which the blade of the other ram is tobe received.
  • flange 208 extends inwardly from the top of carrier 188 to provide a downwardly facing flat surface to which the top side of blade 19B is secured by bolts which extend through aligned holes in flange 20B and top side of plate 198.
  • wall 218 extends downwardly to intersect the bottom of the carrier intermediate its inner and outer ends.
  • the blade 19B has ,a V shaped cutting edge 22B and projects forwardly of the inner end of the carrier to provide a surface 23B in this case downwardly facing which is disposed in a plane perpendicular to the axis of bore 12. More particularly, blade 19B is of the same size as blade 19A, and its surface 238 is approximately equidistant from the top and bottom of the carrier.
  • the top and bottom surfaces, respectively, of their blades are disposed in substantially the same plane, so that during movement of the rams to their inner positions, the cutting edges of each will shear the pipe by moving past one another and over the surface of the other.
  • the opposite sides of blade 19B are spaced inwardly from the opposite sides of carrier 18B. Also, the space below the bottom surface 23B of the blade is unobstructed, except for a pair of flanges 24B which extend forwardly from the lower, outer corners of wall 218. The tops of these flanges provide surfaces which are axially coextensive with and which are parallel and face oppositely to the opposite downwardly facing surfaces at the sides of the flange 20B.
  • Flanges 24B are spaced below the surfaces of flange 20B a distance approximately twice the thickness of plate 198 so as to permit blade 19A to be moved into the space between blade 19B and flanges 24B, as blade 19B simultaneously moves into the space between blade 19A and flanges 24A of ram 13A.
  • the shear blades are of such length end-for-end that, when moved to their inner positions, they will overlap for a considerable axial distance, so as to dispose a seal member 42 carried on and extending across surface 23B of blade 19B opposite the upwardly facing surface 23A of blade 19A, and at the same time leave a substantial space between the inner end of each ram and the vertical wall of the other ram to receive the cut ends of the pipe.
  • seal member 42 is somewhat enlarged across its top and is slidable into and out of a groove 43 of conforming cross section. When in the groove, it provides a lower surface which forms a continuation of surface 238 so that it will move freely over surface 23A as the rams are moved into and out of their inner positions.
  • ram 133 will be understood from the foregoing description of ram 13A, and hence corresponding parts have been given corresponding reference characters, with those of rams 138 using the letter 8" rather than the letter A".
  • This continuous seal includes the sealing engagement of the inner side of each side seal part of each ram with the side of the blade of the other ram.
  • the side plates 40A and 40B on the side seal parts of the two rams are of such axial length that the shear blades move past the front edges of such plates prior to abutment of the side seal parts with one another, and thus prior to deformation of the deformable sealing material. Consequently, the shear blades are prevented from damaging the side seal parts during continued movement of the rams in an inward direction.
  • seal member 42 is substantially flush with surface 238 and is adapted to seal against surface 23A (the latter being complementary to surface 238) when the rams are in closed position.
  • the groove 43 can be termed a means adapted to mount seal member 42 substantially flush with surface 23B.
  • surface 23A can be said to extend in an axial direction and to terminate in cutting edge 228.
  • the surfaces 23A and 23B of the rams 13A and 133 are flat and disposed in planes perpendicular to the axis of the bore 12 of the preventer housing, it is contemplated that such surfaces may instead be other than perpendicular to the axis of the bore of the preventer housing, and even curved as long as all straight line elements on the surface are parallel to the axis of the ram. In any event, however, the surfaces extend across the rams for a sufficient extent to provide cutting edges which cooperate with one another in shearing the pipe in the bore.
  • apparatus for use with a blowout preventer having a housing with a bore therethrough and a pair of guideways extending laterally from the bore, apparatus comprising a pair of rams each including a body having inner and outer ends and adapted to slide within one of the guideways between an outer position removed from the bore and an inner position across the bore, each body having a cutting edge extending across its inner end, a surface extending outwardly from said edge, and a wall extending from the outer end of said surface to the outside of the ram body to provide a recess, the distance between the surface and the top of one ram body being substantially equal to that of the other ram body, and the distances from the cutting edge of each ram body to said wall being such that, when the rams are mounted in the guideways with their surfaces facing in opposite directions and moved into their inner positions, their cutting edges will move closely past one another and over said surfaces, so as to shear a pipe disposed within the bore, and the inner end of each body will be so spaced from the wall of the other body
  • seal means includes rigid parts on their inner sides past which the body of the other ram moves following abutment of the faces of said seal means.
  • each ram body has flanges extending from its inner end to provide surfaces which face oppositely to surfaces on said body on opposite sides of said outwardly extending surface, and the portions of the seal means of each ram comprise side seal parts disposed between said oppositely facing surfaces and engaging the guideways and the opposite ends of said seal member.
  • a blowout preventer ram comprising a body having inner and outer ends and a top and bottom adapted to slide axially within the guideway of a blowout preventer housing, said body including a carrier and a blade removably mounted on the carrier, a cutting edge on the blade extending across its inner end, a surface on the blade extending outwardly from the cutting edge intermediate the top and bottom of the body, and a wall extending from the outer end of said surface to the bottom of the ram body to provide a recess, and seal means carried by the body including portions extending along one side of the recess, over the top of the ram body outwardly of the recess, and along the opposite side of the recess, and a first seal member on the blade extending continuously across said surface from one side to the other to engage the seal means along the opposite sides of said recess, said seal means including a second seal member extending between the carrier and blade to engage the seal means along the opposite sides of said recess.
  • each side seal part comprises a body of deformable material having rigid plates on the top and bottom thereof, which extend rearwardly from its inner end for less than its length, and an additional rigid plate on an outer lower portion of its inward side which extends upwardly from its bottom less than its height but above the level of the bottom 7 surface of the blade.
  • a ram comprising a body having shearing means on its inner end, including a cutting edge and a surface extending outwardly from the cutting edge for cooperation with shearing means of an opposing ram upon movement of said rams inwardly, means on the body for sealing between the body and a guideway with an opposing ram, said means for sealing with an opposing ram including a seal member substantially flush with said surface and extending laterally across it.
  • a blowout preventer comprising a housing having a bore therethrough and a pair of guideways therein extending laterally from the bore, and a ram including a body movable axially within each guideway between an outer position removed from the bore and an inner position across the bore, each ram body having inner and outer ends, a cutting edge extending across its inner end and a surface extending outwardly from said edge, said surfaces facing in opposite directions so that the cutting edge of each ram body moves closely past the cutting edge and over the surface of the other ram body, so as to shear a pipe disposed within the bore, as the rams move to their inner positions, and seal means carried by the ram bodies including a seal member carried on and extending across the surface of one ram body for disposal opposite the surface of said other ram body, and portions for sealing between one ram body and the other on opposite ends of said seal member and for sealing between each ram body and its guideway so as to seal off the bore of said housing, when the ram bodies are movd to their inner
  • apparatus for use with a blowout preventer having a housing with a bore therethrough and a pair of guideways extending laterally from the bore, apparatus comprising a pair of rams each including a body having inner and outer ends and adapted to slide within one of the guideways between an outer position removed from the bore and an inner position across the bore, each body having a cutting edge extending across its inner end and a surface extending outwardly from said edge, said rams being mountable in the guideways with their surfaces facing in opposite directions so that, when moved into their inner positions, their cutting edges will move closely past one another and over said surfaces, so as to shear a pipe disposed within the bore, and seal means including a seal member carried on and extending across the surface of one ram body for disposal opposite the surface of the other ram body, and portions carried by each ram body for sealing between it and the other ram body on opposite ends of the seal member and between each body and its guideway so as to seal off the bore of said housing when the ram bodies are moved to their inner positions.
  • a blowout preventer comprising a housing having a bore therethrough and a pair of guideways therein extending laterally from the bore, and a ram including a body movable axially within each guideway between an outer position removed from the bore and an inner position across the bore, each ram body having inner and outer ends, a cutting edge extending across its inner end, and a surface extending outwardly from said edge, said surfaces facing in opposite directions so that the cutting edge of each ram body moves closely past the cutting edge and over the surface of the other ram body, so as to shear a pipe disposed within the bore, as the rams move to their inner positions, and seal means carried by the ram bodies including a seal member carried on and extending across the surface of one ram body for disposal opposite the surface of said other ram body and portions for sealing between one ram body and the other on opposite ends of said seal member and for sealing between each ram body and its guideway so as to seal off the bore of said housing, when the ram bodies are moved to their inner positions,
  • apparatus for use with a blowout preventer having a housing with a bore therethrough and a pair of guideways extending laterally from the bore, apparatus comprising a pair of rams each including a body having inner and outer ends and adapted to slide within one of the guideways between an outer position removed from the bore and an inner position across the bore, each body having a cutting edge extending across its inner end and a surface extending outwardly from said edge, said rams being mountable in the guideways with their surfaces facing in opposite directions so that, when moved into their inner positions, their cutting edges will move closely past one another and over said surfaces, so as to shear a pipe disposed within the bore, and seal means including a seal member carried on and extending across the surface of one ram body for disposal opposite the surface of the other ram body and portions carried by each ram body for sealing between it and the other ram body on opposite ends of the seal member and between each body and its guideway so as to seal off the bore of said housing when the ram bodies are moved to their inner positions, each said
  • a blowout preventer having a housing containing a pair of rams having shearing edges adapted to shear pipe extending through the housing as the rams are moved to closed position
  • the improvement which comprises, in combination therewith, each ram having a horizontal surface extending outwardly of its shearing edge to a wall; the wall of each ram being spaced outwardly of the shearing edge of the other ram sufficiently to provide a recess therebetween of sufficient size to receive a cut end of the pipe when the rams are in closed position to avoid having to move either end of the pipe vertically in order to permit the rams to move to fully closed position; and seal means for sealing between the rams and between each ram and the housing including a first groove in one ram formed in the horizontal surface thereof along but spaced from its shearing edge so as to be substantially closed by the other ram surface when the rams are in closed position, a second groove in the periphery of each ram adapted to be substantially closed by the housing when the
  • apparatus for use in a blowout preventer to shear a pipe extending through the housing thereof and then to seal off a well, apparatus comprising a pair of blind rams each having a shearing edge adapted to so shear a pipe when the rams are moved to closed position and each having a horizontal surface extending outwardly of its shearing edge to a wall; the wall of each ram being spaced outwardly of the shearing edge of the other ram suffrciently to provide a recess therebetween for receiving a cut end of the pipe when the rams are in closed position to avoid having to move either end of the pipe vertically in order to permit the rams to move to fully closed position; and seal means for sealing between the rams and for sealing between each ram and the housing when the rams are mounted therein including a first groove in one ram formed in the horizontal surface thereof along but spaced from its shearing edge so as to be substantially closed by the other ram surface when the rams are in closed position, a
  • a blowout preventer having shear rams for severing a tubular member extending through the bore thereof and then sealing the bore, characterized in that a seal member is imbedded in a horizontal surface extending across one ram and is adapted to seal against a complimentary horizontal surface of the other ram when the rams are in closed position.
  • a blowout preventer having a pair of shear rams adapted to be moved in an axial direction in the guideways of the blowout preventer to sever a member ex tending through the bore of the blowout preventer and then seal the bore, characterized in that one ram has a surface extending in said axial direction and terminating in a cutting edge and including a seal member substantially flush with said surface, said surface and seal member extending substantially across said one ram and being adapted to seal against a complementary surface of the other ram when the rams are in closed position.
  • a shear ram adapted to be moved in an axial direction in a guideway of a blowout preventer to cooperate with another shear ram to sever a member extending through the bore of the blowout preventer and then seal the bore, characterized in that a surface of the ram extends in said axial direction and terminates in a cutting edge and includes a seal member substantially flush with said surface, said surface and seal member extending substantially across the ram and being adapted to seal against a complementary surface of the other ram when the rams are in closed position.
  • a shear ram adapted to be moved in an axial direction in a guideway of a blowout preventer to cooperate with another shear ram to sever a member extending through the bore of the blowout preventer and then seal the bore, characterized in that a surface of the ram extends in said axial direction and terminates in a cutting edge and includes means adapted to mount a seal member substantially flush with said surface, said surface and seal member when so mounted extending substantially across the ram and being adapted to seal against a complementary surface of the other ram when the rams are in closed position.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Actuator (AREA)
  • Drilling And Boring (AREA)
  • Drilling Tools (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Road Paving Machines (AREA)
  • Shearing Machines (AREA)
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US00263602A 1972-06-16 1972-06-16 Ram-type blowout preventer Expired - Lifetime US3817326A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US00263602A US3817326A (en) 1972-06-16 1972-06-16 Ram-type blowout preventer
GB5096374A GB1409473A (en) 1972-06-16 1973-06-14 Ram for a blowout preventer
GB5096274A GB1409472A (en) 1972-06-16 1973-06-14 Ram for a blowout preventer
GB2847773A GB1409471A (en) 1972-06-16 1973-06-14 Ram-type blowout preventer
JP6645173A JPS549565B2 (enrdf_load_stackoverflow) 1972-06-16 1973-06-14
DE2330568A DE2330568C3 (de) 1972-06-16 1973-06-15 Druckkolbenvorrichtung für ein Ausblasventil
US05/466,049 US3946806A (en) 1972-06-16 1974-05-01 Ram-type blowout preventer
JP6354975A JPS5410327B2 (enrdf_load_stackoverflow) 1972-06-16 1975-05-29

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Application Number Priority Date Filing Date Title
US00263602A US3817326A (en) 1972-06-16 1972-06-16 Ram-type blowout preventer

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US05/466,049 Division US3946806A (en) 1972-06-16 1974-05-01 Ram-type blowout preventer

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US3817326A true US3817326A (en) 1974-06-18

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US00263602A Expired - Lifetime US3817326A (en) 1972-06-16 1972-06-16 Ram-type blowout preventer

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US (1) US3817326A (enrdf_load_stackoverflow)
JP (2) JPS549565B2 (enrdf_load_stackoverflow)
DE (1) DE2330568C3 (enrdf_load_stackoverflow)
GB (3) GB1409472A (enrdf_load_stackoverflow)

Cited By (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2736129A1 (de) * 1976-08-23 1978-03-02 Rucker Co Ausbruchverhueter mit scherbacken zum absperren von bohrquellen
US4132265A (en) * 1978-04-06 1979-01-02 Cameron Iron Works, Inc. Pipe shearing ram assembly for blowout preventer
US4132266A (en) * 1978-04-06 1979-01-02 Cameron Iron Works, Inc. Pipe shearing ram assembly for blowout preventer
US4132267A (en) * 1978-04-06 1979-01-02 Cameron Iron Works, Inc. Pipe shearing ram assembly for blowout preventer
US4160478A (en) * 1977-04-25 1979-07-10 Otis Engineering Corporation Well tools
FR2422023A1 (fr) * 1978-04-06 1979-11-02 Cameron Iron Works Inc Obturateur anti-eruption
US4240503A (en) * 1979-05-01 1980-12-23 Hydril Company Blowout preventer shearing and sealing rams
FR2480848A1 (fr) * 1980-04-22 1981-10-23 Cameron Iron Works Inc Appareil de cisaillage de tete de puits
US4347898A (en) * 1980-11-06 1982-09-07 Cameron Iron Works, Inc. Shear ram blowout preventer
DE3337510A1 (de) * 1982-12-02 1984-06-07 Koomey Blowout Preventers, Inc., 77240 Houston, Tex. Ausblaspreventer
US4476935A (en) * 1983-03-09 1984-10-16 Hydril Company Safety valve apparatus and method
EP0145456A3 (en) * 1983-12-14 1986-02-05 Cameron Iron Works, Inc. Shearing type blowout preventer
US5013005A (en) * 1986-04-18 1991-05-07 Cameron Iron Works, Inc. Blowout preventer
US5515916A (en) * 1995-03-03 1996-05-14 Stewart & Stevenson Services, Inc. Blowout preventer
US6158505A (en) * 1999-08-30 2000-12-12 Cooper Cameron Corporation Blade seal for a shearing blind ram in a ram type blowout preventer
US6173770B1 (en) * 1998-11-20 2001-01-16 Hydril Company Shear ram for ram-type blowout preventer
US6244336B1 (en) * 2000-03-07 2001-06-12 Cooper Cameron Corporation Double shearing rams for ram type blowout preventer
US6260817B1 (en) * 1999-10-29 2001-07-17 Stream-Flo Industries, Ltd. Hydraulic blowout preventer assembly for production wellhead
US20030127231A1 (en) * 2001-12-17 2003-07-10 Tye Schlegelmilch Coiled tubing cutter
US20040099420A1 (en) * 2002-11-26 2004-05-27 Kotrla Johnnie E. Subsea connection apparatus for a surface blowout preventer stack
US20060038147A1 (en) * 2004-08-17 2006-02-23 Cooper Cameron Corporation Unitary blade seal for a shearing blind ram in a ram type blowout preventer
US20060090899A1 (en) * 2004-11-01 2006-05-04 Gass Dustin D Ram BOP shear device
US20060144586A1 (en) * 2004-12-30 2006-07-06 Cooper Cameron Corporation Shearing blind ram assembly with a fish pocket
US20070175625A1 (en) * 2006-01-31 2007-08-02 Stream-Flo Industries Ltd. Polish Rod Clamping Device
US20070175626A1 (en) * 2006-01-27 2007-08-02 Stream-Flo Industries Ltd. Wellhead Blowout Preventer With Extended Ram for Sealing Central Bore
US20080001107A1 (en) * 2004-11-01 2008-01-03 Hydril Company Lp Ram bop shear device
US20080105436A1 (en) * 2006-11-02 2008-05-08 Schlumberger Technology Corporation Cutter Assembly
US20090050828A1 (en) * 2004-10-16 2009-02-26 Jeffrey Charles Edwards Blow out preventers
RU2411345C1 (ru) * 2009-10-26 2011-02-10 Федеральное государственное образовательное учреждение высшего профессионального образования "Сибирский федеральный университет" (СФУ) Плашечный превентор
US20110147623A1 (en) * 2009-12-21 2011-06-23 Hydril Usa Manufacturing Llc Shear Block and Blade Interface and Method
US20110226476A1 (en) * 2006-04-25 2011-09-22 National Oilwell Varco, L.P. Tubular severing system and method of using same
US20110226477A1 (en) * 2006-04-25 2011-09-22 National Oilwell Varco, L.P. Tubular severing system and method of using same
US8162046B2 (en) 2010-08-17 2012-04-24 T-3 Property Holdings, Inc. Blowout preventer with shearing blades
EP2400110A3 (en) * 2006-04-25 2012-06-27 National Oilwell Varco, L.P. Apparatus and method for severing a wellbore tubular
US9644444B2 (en) * 2011-09-08 2017-05-09 Cameron International Corporation Load-sharing ram packer for ram type blowout preventers
EP2610428A3 (en) * 2011-12-28 2017-11-22 Hydril USA Manufacturing LLC Shear blade and method of attachment to shear rams
US10000987B2 (en) 2013-02-21 2018-06-19 National Oilwell Varco, L.P. Blowout preventer monitoring system and method of using same
US20190162040A1 (en) * 2017-11-29 2019-05-30 Cameron International Corporation Side packer for a blowout preventer
US10370927B2 (en) 2017-03-30 2019-08-06 General Electric Company Blowout prevention system including blind shear ram
US10577884B2 (en) 2017-03-31 2020-03-03 General Electric Company Blowout prevention system including blind shear ram
US10655420B2 (en) 2017-03-21 2020-05-19 Baker Hughes, A Ge Company, Llc Blowout prevention system including blind shear ram
US10677010B2 (en) 2016-08-31 2020-06-09 Enovate Systems Limited Shear blade
USD1006845S1 (en) * 2019-08-06 2023-12-05 Nxl Technologies Inc. Shear blade component for a shear blind assembly

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US4646825A (en) * 1986-01-02 1987-03-03 Winkle Denzal W Van Blowout preventer, shear ram, shear blade and seal therefor

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US2593793A (en) * 1947-04-21 1952-04-22 Laurence L Rector Ram-type tubing head
US2919111A (en) * 1955-12-30 1959-12-29 California Research Corp Shearing device and method for use in well drilling
US2969838A (en) * 1956-07-23 1961-01-31 Shaffer Tool Works Combination shearing and shut-off ram
US3399728A (en) * 1966-12-01 1968-09-03 Allan R. Taylor Conduit closure apparatus
US3561526A (en) * 1969-09-03 1971-02-09 Cameron Iron Works Inc Pipe shearing ram assembly for blowout preventer
US3717202A (en) * 1971-08-30 1973-02-20 M Burrow Remote well plugging apparatus
US3736982A (en) * 1972-05-01 1973-06-05 Rucker Co Combination shearing and shut-off ram for blowout preventer

Cited By (70)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2736129A1 (de) * 1976-08-23 1978-03-02 Rucker Co Ausbruchverhueter mit scherbacken zum absperren von bohrquellen
US4081027A (en) * 1976-08-23 1978-03-28 The Rucker Company Shear rams for hydrogen sulfide service
US4160478A (en) * 1977-04-25 1979-07-10 Otis Engineering Corporation Well tools
US4132265A (en) * 1978-04-06 1979-01-02 Cameron Iron Works, Inc. Pipe shearing ram assembly for blowout preventer
US4132266A (en) * 1978-04-06 1979-01-02 Cameron Iron Works, Inc. Pipe shearing ram assembly for blowout preventer
US4132267A (en) * 1978-04-06 1979-01-02 Cameron Iron Works, Inc. Pipe shearing ram assembly for blowout preventer
FR2422023A1 (fr) * 1978-04-06 1979-11-02 Cameron Iron Works Inc Obturateur anti-eruption
US4240503A (en) * 1979-05-01 1980-12-23 Hydril Company Blowout preventer shearing and sealing rams
FR2480848A1 (fr) * 1980-04-22 1981-10-23 Cameron Iron Works Inc Appareil de cisaillage de tete de puits
US4313496A (en) * 1980-04-22 1982-02-02 Cameron Iron Works, Inc. Wellhead shearing apparatus
DE3115623A1 (de) * 1980-04-22 1982-02-18 Cameron Iron Works, Inc., Houston, Tex. Abschervorrichtung fuer einen bohrlochkopf
US4347898A (en) * 1980-11-06 1982-09-07 Cameron Iron Works, Inc. Shear ram blowout preventer
DE3337510A1 (de) * 1982-12-02 1984-06-07 Koomey Blowout Preventers, Inc., 77240 Houston, Tex. Ausblaspreventer
US4476935A (en) * 1983-03-09 1984-10-16 Hydril Company Safety valve apparatus and method
EP0145456A3 (en) * 1983-12-14 1986-02-05 Cameron Iron Works, Inc. Shearing type blowout preventer
AU567378B2 (en) * 1983-12-14 1987-11-19 Cooper Cameron Corporation Ram-type tubing shearing apparatus having a cutting blade with at least one piercing node
US5013005A (en) * 1986-04-18 1991-05-07 Cameron Iron Works, Inc. Blowout preventer
US5515916A (en) * 1995-03-03 1996-05-14 Stewart & Stevenson Services, Inc. Blowout preventer
US6173770B1 (en) * 1998-11-20 2001-01-16 Hydril Company Shear ram for ram-type blowout preventer
US6158505A (en) * 1999-08-30 2000-12-12 Cooper Cameron Corporation Blade seal for a shearing blind ram in a ram type blowout preventer
US6260817B1 (en) * 1999-10-29 2001-07-17 Stream-Flo Industries, Ltd. Hydraulic blowout preventer assembly for production wellhead
SG99337A1 (en) * 2000-03-07 2003-10-27 Cooper Cameron Corp Double shearing rams for ram type blowout preventer
US6244336B1 (en) * 2000-03-07 2001-06-12 Cooper Cameron Corporation Double shearing rams for ram type blowout preventer
US7086467B2 (en) * 2001-12-17 2006-08-08 Schlumberger Technology Corporation Coiled tubing cutter
US20030127231A1 (en) * 2001-12-17 2003-07-10 Tye Schlegelmilch Coiled tubing cutter
US7225873B2 (en) * 2001-12-17 2007-06-05 Schlumberger Technology Corporation Coiled tubing cutter
US20060254773A1 (en) * 2001-12-17 2006-11-16 Schlumberger Technology Corporation Coiled tubing cutter
US20040099420A1 (en) * 2002-11-26 2004-05-27 Kotrla Johnnie E. Subsea connection apparatus for a surface blowout preventer stack
US9085951B2 (en) 2002-11-26 2015-07-21 Cameron International Corporation Subsea connection apparatus for a surface blowout preventer stack
US8695691B2 (en) 2002-11-26 2014-04-15 Cameron International Corporation Subsea connection apparatus for a surface blowout preventer stack
US7779917B2 (en) * 2002-11-26 2010-08-24 Cameron International Corporation Subsea connection apparatus for a surface blowout preventer stack
NO338189B1 (no) * 2004-08-17 2016-08-01 Cooper Cameron Corp Utblåsingssikring av avstengertypen, kuttende blindavstengersammenstilling og bladtetning for den kuttende blindavstengersammenstilling i utblåsningssikringen av avstengertypen.»
US20060038147A1 (en) * 2004-08-17 2006-02-23 Cooper Cameron Corporation Unitary blade seal for a shearing blind ram in a ram type blowout preventer
US7354026B2 (en) * 2004-08-17 2008-04-08 Cameron International Corporation Unitary blade seal for a shearing blind ram in a ram type blowout preventer
US8800954B2 (en) * 2004-10-16 2014-08-12 Enovate Systems Limited Blow out preventers
US20090050828A1 (en) * 2004-10-16 2009-02-26 Jeffrey Charles Edwards Blow out preventers
US20080001107A1 (en) * 2004-11-01 2008-01-03 Hydril Company Lp Ram bop shear device
US7703739B2 (en) 2004-11-01 2010-04-27 Hydril Usa Manufacturing Llc Ram BOP shear device
US20060090899A1 (en) * 2004-11-01 2006-05-04 Gass Dustin D Ram BOP shear device
US7234530B2 (en) 2004-11-01 2007-06-26 Hydril Company Lp Ram BOP shear device
US20060144586A1 (en) * 2004-12-30 2006-07-06 Cooper Cameron Corporation Shearing blind ram assembly with a fish pocket
US7552765B2 (en) 2006-01-27 2009-06-30 Stream-Flo Industries Ltd. Wellhead blowout preventer with extended ram for sealing central bore
US20070175626A1 (en) * 2006-01-27 2007-08-02 Stream-Flo Industries Ltd. Wellhead Blowout Preventer With Extended Ram for Sealing Central Bore
US20070175625A1 (en) * 2006-01-31 2007-08-02 Stream-Flo Industries Ltd. Polish Rod Clamping Device
US7673674B2 (en) 2006-01-31 2010-03-09 Stream-Flo Industries Ltd. Polish rod clamping device
US8720565B2 (en) 2006-04-25 2014-05-13 National Oilwell Varco, L.P. Tubular severing system and method of using same
US20110226477A1 (en) * 2006-04-25 2011-09-22 National Oilwell Varco, L.P. Tubular severing system and method of using same
US20110226476A1 (en) * 2006-04-25 2011-09-22 National Oilwell Varco, L.P. Tubular severing system and method of using same
EP2400110A3 (en) * 2006-04-25 2012-06-27 National Oilwell Varco, L.P. Apparatus and method for severing a wellbore tubular
US8720564B2 (en) * 2006-04-25 2014-05-13 National Oilwell Varco, L.P. Tubular severing system and method of using same
US8720567B2 (en) 2006-04-25 2014-05-13 National Oilwell Varco, L.P. Blowout preventers for shearing a wellbore tubular
US20080105436A1 (en) * 2006-11-02 2008-05-08 Schlumberger Technology Corporation Cutter Assembly
RU2411345C1 (ru) * 2009-10-26 2011-02-10 Федеральное государственное образовательное учреждение высшего профессионального образования "Сибирский федеральный университет" (СФУ) Плашечный превентор
US8439327B2 (en) * 2009-12-21 2013-05-14 Hydril Usa Manufacturing Llc Shear block and blade interface and method
US20110147623A1 (en) * 2009-12-21 2011-06-23 Hydril Usa Manufacturing Llc Shear Block and Blade Interface and Method
US8443879B2 (en) 2010-08-17 2013-05-21 T-3 Property Holdings, Inc. Blowout preventer with shearing blades
US8443880B1 (en) 2010-08-17 2013-05-21 T-3 Property Holdings, Inc. Blowout preventer with shearing blades
US8167031B2 (en) 2010-08-17 2012-05-01 T-3 Property Holdings, Inc. Blowout preventer with shearing blades
US8162046B2 (en) 2010-08-17 2012-04-24 T-3 Property Holdings, Inc. Blowout preventer with shearing blades
US9644444B2 (en) * 2011-09-08 2017-05-09 Cameron International Corporation Load-sharing ram packer for ram type blowout preventers
EP2610428A3 (en) * 2011-12-28 2017-11-22 Hydril USA Manufacturing LLC Shear blade and method of attachment to shear rams
US10000987B2 (en) 2013-02-21 2018-06-19 National Oilwell Varco, L.P. Blowout preventer monitoring system and method of using same
US10677010B2 (en) 2016-08-31 2020-06-09 Enovate Systems Limited Shear blade
US10655420B2 (en) 2017-03-21 2020-05-19 Baker Hughes, A Ge Company, Llc Blowout prevention system including blind shear ram
US10370927B2 (en) 2017-03-30 2019-08-06 General Electric Company Blowout prevention system including blind shear ram
US10577884B2 (en) 2017-03-31 2020-03-03 General Electric Company Blowout prevention system including blind shear ram
US20190162040A1 (en) * 2017-11-29 2019-05-30 Cameron International Corporation Side packer for a blowout preventer
US11802459B2 (en) 2017-11-29 2023-10-31 Schlumberger Technology Corporation Side packer for a blowout preventer
US12305468B2 (en) 2017-11-29 2025-05-20 Schlumberger Technology Corporation Side packer for a blowout preventer
USD1006845S1 (en) * 2019-08-06 2023-12-05 Nxl Technologies Inc. Shear blade component for a shear blind assembly

Also Published As

Publication number Publication date
DE2330568C3 (de) 1982-04-01
JPS549565B2 (enrdf_load_stackoverflow) 1979-04-25
JPS5410327B2 (enrdf_load_stackoverflow) 1979-05-04
GB1409473A (en) 1975-10-08
JPS5133703A (enrdf_load_stackoverflow) 1976-03-23
GB1409471A (en) 1975-10-08
DE2330568B2 (de) 1981-05-27
DE2330568A1 (de) 1974-01-03
JPS4963603A (enrdf_load_stackoverflow) 1974-06-20
GB1409472A (en) 1975-10-08

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Owner name: COOPER INDUSTRIES, INC., 1001 FANNIN, HOUSTON, TX

Free format text: ASSIGNS THE ENTIRE INTEREST, EFFECTIVE 10/29/89.;ASSIGNOR:CAMERON IRON WORKS, INC., A CORP OF DE;REEL/FRAME:005589/0008

Effective date: 19910125