US3561527A - Hydraulically set casing hanger apparatus and packing sleeve - Google Patents
Hydraulically set casing hanger apparatus and packing sleeve Download PDFInfo
- Publication number
- US3561527A US3561527A US772521A US3561527DA US3561527A US 3561527 A US3561527 A US 3561527A US 772521 A US772521 A US 772521A US 3561527D A US3561527D A US 3561527DA US 3561527 A US3561527 A US 3561527A
- Authority
- US
- United States
- Prior art keywords
- mandrel
- casing hanger
- well bore
- seal
- casing
- 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.)
- Expired - Lifetime
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B33/04—Casing heads; Suspending casings or tubings in well heads
- E21B33/043—Casing heads; Suspending casings or tubings in well heads specially adapted for underwater well heads
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- a special housing is provided at or near the ocean bottom to support and seal off the casing string cemented in the well bore.
- the lock ring must be released in order to pull the casing hanger in the event that such pulling is necessary or desirable, say, before the cementing operation.
- the present invention provides underwater casing hanger apparatus which is set by hydraulic pressure in locked or anchored engagement with the subsurface housing or previously set casing hanger.
- the invention also provides underwater casing hanger apparatus in which the seal between the hanger body and the housing or previously set casing hanger is set by hydraulic pressure.
- the present casing hanger apparatus pro vides fluid pressure responsive piston and cylinder means for shifting anchoring means and sealing means to anchoring and sealing positions, when the casing hanger is to be anchored and sealed off, following the cementing of the casing string in the well bore, without requiring rotation of the running-in string of pipe on which the casing hanger is lowered through the water to the ocean floor and landed in the subsurface housing or previously set casing hanger.
- the apparatus includes a packer or seal in the form of a sleeve or ring adapted to be deformed into sealing engagement with opposing cylindrical walls by the application of an axial force, the packer or seal comprising a longitudinally undulated deformable metal body which is deformed beyond its elastic limit when in engagement with the cylindrical walls.
- the packer or seal may also include elastomeric material which is also deformed upon the application of a force to deform the metal body, the elastomeric material engaging the opposing cylindrical walls to insure the prevention of leakage past the metal body.
- An object of the invention is to provide a rugged and effective casing hanger apparatus capable of being anchored in an underwater housing or previously set casing hanger and sealed off by fluid pressure.
- Another object is to provide a packing or seal device in which a metal body is defonned inwardly and outwardly into effective sealing relation to opposing cylindrical walls.
- FIG. 1 is a view partly in elevation, with parts broken away, and showing a casing hanger and associated apparatus installed in and in association with a well bore underlying a body of water;
- FIGS. 2a and 2! together constitute a quarter longitudinal section through casing hanger apparatus embodying the invention and landed in a surrounding hanger body or housing, the parts being illustrated in the initial condition which they occupy in lowering the apparatus from a drilling rig, FIG. 2b being a downward continuation of FIG. 20;
- FIGS. 3a and 3b together constitute a quarter longitudinal section, generally similar to FlGS. 2a and 2b, but showing the hanger body anchored in the housing or previously set hanger, and the seal or packer deformed and sealing off the space between the hanger and the housing or previously set easing hanger;
- H0. 4 is a transverse section taken on the line 4-4 of FIG. 217;
- FIG. 5 is a fragmentary longitudinal section illustrating the packed-off seal of the invention.
- FIG. 6 is a fragmentary longitudinal section illustrating a modified packed-off seal.
- a typical installation of apparatus embodying the invention is illustrated somewhat diagrammatically in H0. 1 in connection with a well bore A underlying an ocean or other body of water and extending downwardly from the ocean floor F.
- a suitable base structure B is supported on the ocean floor and carries an outer casing C of relatively large diameter suspended from a casing hanger body or head D resting upon an outer housing seat E on the base and locked thereto by a suitable lock n'ng G.
- Disposed within the outer casing is an intermediate string of casing H extending down into the well bore and suspended from a suitable casing hanger body J resting upon a companion tapered seat K in the outer body.
- blowout preventers N are connected by means of a suitable connector P to the head D, such as by a hydraulic connector illustrated in the U.S. Pat. No. 3,32l,2l7, for Coupling Apparatus for Well Heads and the Like, the blowout preventers, in turn, being connected by a suitable hydraulic or other connector R to a flexible joint S, made of sections, secured to a marine conductor pipe T extending to the drilling rig, which may be located on a drilling platform or on a floating vessel or structure (not shown).
- Another string of easing Y is disclosed in FIG. 1 as having been supported in a hanger W locked in packed-off condition in the intermediate hanger body J.
- the casing hanger apparatus W includes a body 10 of annular form having a lower hanger thread 11 connected to the downwardly extending casing Y.
- the casing hanger body 10 has a downwardly facing tapered shoulder 12 adapted to engage an upwardly facing seat 13 in the previously set hanger body .I, for example.
- the hanger body At its upper end, the hanger body it) has an internal left-hand threaded section 14 adapted for threaded coengagement by an externally threaded flange 15 on a mandrel 16 of a running tool, generally denoted at 2.
- the mandrel 16 At its upper end, the mandrel 16 has an internally threaded box 17 adapted to receive the externally threaded pin end 18 of a running-in string of pipe 19 extending to the drilling rig. Extending longitudinally through the mandrel 16 is a central passage 20 adapted to communicate with the pipe string 19 and the casing Y.
- the string of easing Y may be lowered through the body of water and landed in a housing or previously set casing hanger, the downwardly facing shoulder 12 of the hanger body 10 supporting the casing string Y. Thereafter, cement may be displaced downwardly through the pipe string 19 and the mandrel passage 20, and thence downwardly through the casing string Y to the bottom thereof, then upwardly through the annular space 21 between the casing Y and the hanger body J, such fluent cement then passing through longitudinal passages 22 provided in the hanger body 10 and into the space above this hanger body, as is typical in the hanging of casing strings from subsurface housings and previously set liner hangers and the cementing of casings, as herein illustrated.
- the present invention provides anchor means, generally denoted at 23, for anchoring the hanger body 10 within the body J; actuator means, generally denoted at 24, for effecting operation of the anchoring means 23; and seal means, generally denoted at 25, for effecting a seal between the hanger body 10 and the body .1 and also operable by the actuator means 24.
- the mandrel 16 of the running tool Z at a location spaced above the flange 15, is provided with a lower annular piston 26 projecting outwardly therefrom. Spaced above the annular piston 26 is an upper annular piston 27, which is threaded as at 27a, or otherwise suitably connected, to the mandrel '16.
- a loading or cylinder sleeve 28 is reciprocably disposed about the piston 27 and the piston 26, suitable side seal rings 29 and 30 being provided, respectively, between the piston 27 and the piston 26 and internal, axially spaced cylindrical walls 31 and 32 of the loading sleeve 28.
- annular cylinder head 33 having a sealing ring 34 adapted for sealing engagement with external cylindrical wall 35 of the tool mandrel 16.
- This annular head 33 is disposed between the lower piston 26 and the upper pimon 27 on the mandrel 16 and divides the annular space 36 between the mandrel and the loading sleeve 28 into a lower annular pressure chamber 37 below the cylinder head 33 and an upper pressure chamber 38 above the cylinder head 33.
- the tool mandrel 16 is provided with lower annular ports 39 leading from the passage through the mandrel into the lower chamber 37, the mandrel also being provided with upper ports 41) leading from the mandrel passage 20 into the upper chamber 38.
- this means comprises a sleeve 41 disposed in the mandrel passage 20 and seating on a lower mandrel shoulder 412 provided within the mandrel passage 20,
- the sleeve 41 spans both the lower and upper ports 39 and 40, and is provided with suitable side seal rings 43 and 44 spaced above and below the ports 40 and another side seal ring 415 spaced below the lower ports 39.
- the sleeve 41 has an internal channel or groove 46 providing an inwardly projecting flange 47 adapted to be engaged by a suitable tool (not shown) for engaging the flange 47 and moving the sleeve 41 axially upwardly so as to uncover the ports 39 and 40 during use of the apparatus, as will be hereinafter described, the sleeve 41 being elevated through the pipe 19 to the drilling rig.
- the loading sleeve 28 supports the seal means 25. More particularly, the seal means includes a support collar or ring 50, which is detachably secured at its upper end to a reduced diameter end portion 51 on the lower end of the loading sleeve 28, as by means of a suitable number of circumferentially spaced shear pins 52. At its upper end 53, the' thrust ring 50 is spaced downwardly from a downwardly facing shoulder 54 on the loading sleeve 28, so as to allow downward movement of the loading sleeve 28 relative to the support ring 511 when it is desired that the pins 52 be sheared during use of the apparatus.
- the seal means 25 includes deformable seal means 55, including a longitudinally undulated or waved metallic sealing ring section 56, which is integral in the illustrative embodiment with the support sleeve 50, and has at least one inner annular crest 56a and at least one ouiier annular crest 56b. Molded about the undulated sleeve section ss is an annular body of rubber or rubberlike, elastomeric material 57, the sleeve section 56 having lateral holes of openings 58 through which the rubber body extends to assist in uniting the rubber with the sleeve section 56.
- the undulated sleeve section 56 has the locking means 23 thereon, including a series of downwardly extended circumferentially spaced deformable lock fingers 59.
- these fingers 59 are of such extent on cumferentially as to be readily flexed outwardly and are insuch number as to positively anchor the casing hanger body 10 against the hanger body seat 13 and to the hanger body J. as well as to anchor the sealing means 25 against displacement after actuation of the seal means and the anchor means, as will hereinafter be described, whereby to effect outward expansion of the lock fingers 59 into an annular channel or internal groove 60 formed within the body 1.
- This groove 60 has an outer downwardly and outwardly flaring wall 6l-and a lower substantially horizontal wall 63 which, in the illustrative embodiment, is slightly downwardly and inwardlyinclined from a true horizontal plane.
- the seal sleeve 41 will be in place in the mandrel bore 20, closing theparts 39 and 40; and the lower chamber 37 may be pressurized by the application of oil or other fluid thereto under pressure, so as to hold the internal cylinder head 33 of the loading sleeve 28 in an upper position substantially in engagement with the upper piston 27.
- Such fluid pressure may be applied through a port 37a in the sleeve 28 leading'into the chamber 37 from the outside of the loading sleeve 28, and, when the cylinder head 33 is in abutting engagement with the upper piston 27, this port 37a may be closed by a suitable plug 37!) which is threaded into an internally threaded bore 370 of the ports 37a in the loading sleeve 28;
- Another port 38 a leads into the pressure chamber 38 from the outside of the loading sleeve 28 and is adapted to be closed by a plug 38b which is threadedly engaged in a threaded bore 38c in the loading sleeve 28.
- This port 380 allows the bleeding off of any fluid from within the chamber 38 when the tool assembly is being.
- the plug 38b may be installed to close off the chamber 38 from the escape of fluid outwardly from the loading sleeve 28.
- the sleeve 41 will be pulled from the mandrel passage 20 by a suitable recovery tool, as is well known in the oil well equipment field, and will be recovered from the upper end of the drill pipe 19.
- This dart 70 includes an elongate body 71 having a lower cylindrical section 72 provided with a side seal ring 73 adapted to sealingly engage within the mandrel passage 20 below the lower ports 39.
- the dart body 71 also has an upper cylindrical section 74 provided with side seal rings 75 adapted for sealing engagement within the bore 20 of the mandrel 16 above and below the upper ports 40.
- the dart body 71 in its lower end section 72, has a transverse passage or passages 76, which communicates with the ports 39 and with a downwardly opening central passage 78 leading into the mandrel bore 20 at the bottom of the dart 70.
- the upper cylindrical section 74 of the dart 70 has a suitable number of radial passages or ports 79 communicating with the ports 40 and with a like number of upwardly extending passages 80 which open upwardly into the mandrel bore 20'.
- the body 71 of the dart 70 has a fishing neck 81 provided with an enlarged head 82, which has a downwardly facing shoulder 83, whereby the dart 70' may be engaged by a suitable fishing tool (not shown) and pulled from the mandrel passage 20 upwardly through the drill pipe 19, when desired.
- the lower chamber 36 between the piston 26 on the mandrel l6 and the internal cylinder head 33 of the loading sleeve 28 may exhaust plied to the chamber 38 through the ports 80, 79 and 40, so as to apply fluid pressure to the head 33 to force the loading sleeve 28 downwardly, the liquid in the lower chamber 36 exhausting through the passages 39, 76, 78.
- the lock fingers 59 and the undulated sleeve portion 56 of the seal means 55 may be composed of mild steel or other malleable material, which, when expanded as illustrated in FIG. 3b, for example, will be deformed beyond their elastic limit and will retain their deformed shape.
- the undulated section 56 of the seal means 55 will be so deformed so as to effect virtual metal-to-metal contact between the inner crests 56a and the outer crests 56b of the undulated sleeve section 56.
- the elastomeric material 57 will fill the spaces between the undulations to assist in the prevention of leakage.
- a slight thickness of elastomeric material might be trapped between the crests 56a, 56b and the cylinder walls 10a, 10b.
- FIG. 5 The sealing relation between the inner crests 56a and the outer crests 56b of the undulated seal sleeve section 56 is more particularly illustrated in FIG. 5, in which the elastomeric material 57 is also shown as being caused to extrude into and fill the spaces between the adjacent undulations.
- a modified seal construction is illustrated in which an undulated seal sleeve section 156 is illustrated, having at least one inner crest 156a and at least one outer crest l56b deformed, in response to axial compressive force applied thereto, into tight sealing engagement with the opposing cylindrical walls 100 and 10b.
- the undulations or corrugations in either of the seal sleeves 56 or 156 are circumferentially continuous, so that the inner crests 56a or 156a and the outer crests 56b or 156b, as the case may be, will effect circurnferentially continuous inner and outer sealing engagement with the opposed cylindrical walls.
- the casing hanger assembly With the loading sleeve 28 in the upper position of FIGS. and 2b and with the sealing sleeve 41 in place, is connected to the threaded pin 18 of the drill pipe 19, so as to be lowered through the body of water into seating engagement with the shoulder 13 in the previously set hanger body or casing J. Thereafter, a circulating fluid may be displaced downwardly through the drill pipe 19, passing through the mandrel passage 20 and downwardly into the casing Y, thence upwardly through the annulus 21 and then flowing through the ports 22 of the hanger body 10, upwardly through the seal means 25 into a space between the mandrel 16 and the loading sleeve 28. Below the piston 26 on the mandrel l6, circulating fluid will pass through parts 28a externally of the loading sleeve 28 and thence may flow upwardly into the space between the loading sleeve 28 and the casing hanger body J.
- a quantity of pumpable cement slurry may be displaced downwardly through the pipe 19 behind the circulating fluid and may follow a similar course until the quantity of cement slurry has been displaced to fill or substantially fill the annulus 2l.
- a suitable recovery tool will be run into the pipe I9 and engaged with the flange 47 of the seal sleeve 41, and the seal sleeve 4I recovered.
- the dart 70 will then be dropped into the pipe I9, or, if necessary, run into a seated position within the mandrel I6 so as to allow the application of fluid pressure to the 'upper pressure chamber 38 and the exhaust of the lower chamber 36. In response to the application of such fluid pressure in the upper chamber 38.
- the loading sleeve 28 will be forced downwardly, moving the seal means 25 and the: anchor means 23 downwardly, effecting the outward deformation of the lock fingers 59, as previously described, and also effecting axial and circumferential deformation of the metallic undulated seal ring 56 and the elastic body 57, if the seal ring includes such elastomeric material, the shear pins 52 being disrupted prior to application of maximum pressure to the cylinders 28, 33 in effecting a leak-proof seal.
- the application of appropriate fluid pressure in the chamber 38 will complete expansion of the sealing means 25 and locking of the fingers 59 in the groove 60, whereupon the entire running tool Z will be free for recovery from the hanger body I0.
- the running string of pipe will be rotated to the right to disconnect the left-hand threaded connection between the flange 15 of the tool mandrel I6 and the internally threaded section 14 of the hanger body 10.
- upward movement of the running string 19 will move the tool mandrel l6 upwardly until the piston 26 thereon engages the head 33 of the loading sleeve 28 to lift the latter, permitting the entire assembly to be moved upwardly from the casing head or hanger body 1, minus the hanger body I0, and the packed-off and anchored seal means 25.
- an inner casing hanger body including a body portion engageable with said seat, a mandrel adapted to be connected to a running string of pipe, means relcasably connecting said mandrel to said body, seal means shiftably carried by said mandrel for movement longitudinally of said mandrel from a first position to a second position in sealing engagement with said body and said outer casing hanger, and actuator means shiftable longitudinally of said mandrel for moving said seal means to said second position
- said seal means including an axially deformable metallic ring of axially undulate form having inner and outer annular portions respectively inwardly and outwardly deformable into sealing relation with said body and said outer casing hanger upon axial deformation of said ring u'pon movement of said seal means to said second position.
- said seal means further comprising an annular body of elastomeric material in which said ring is embedded.
- anchor means movable on said mandrel by said actuator means and engageable with said outer casing hanger.
- anchor means movable on said mandrel by said actuator means and engageable with said outer casing hanger, said anchor means being connected to said seal means and movable therewith.
- anchor means engageable with said outer casing hanger body responsive to movement of said actuator means longitudinally of said mandrel, said anchor means having a plurality of circumferentially spaced longitudinally extended lock fingers, said outer casing hanger having a recess for receiving said fingers, andsaid inner casing hanger body having means for deforming said fingers outwardly into said recess upon movement of said actuator means,
- anchor means engageable with said outer casing hanger body responsive to movement of said actuator means longitudinally of said mandrel, said anchor means having a plurality of circumferentially spaced longitudinally extended lock fingers, said outer casing hanger having a recess for receiving the ends of said fingers, and said mandrel having means for deforming said fingers outwardly into said recess upon movement of said actuator means, and including means connecting said anchor means to said actuator means and releasable following outward deformation of said lock fingers to disconnect said actuator means from said anchor means, means connecting said mandrel to said body and releasably to disconnect said mandrel from said body, t
- anchor means engageable with said outer casing hanger responsive to movement of said actuator means longitudinally of said mandrel, and means releasably connecting said mandrel to said anchor means and releasable following engagement of said anchor means with said outer casing hanger.
- said means releasably connecting said mandrel to said anchor n cans including shear pins.
- an inner casing hanger body including a body portion engageable with said seat, a mandrel adapted to be connected to a running string of pipe, means releasably connecting said mandrel to said body, anchor means shiftably carried by said mandrel for movement longitudinally of said mandrel from a retracted position to an expanded position locked to the outer casinghanger, said anchor means comprising a plurality of circumferentially spaced longitudinally extending lock fingers, said outer casing hanger having a recess for receiving said fingers, said inner casing hanger body having means engaged by said fingers upon longitudinal movement of said anchor means for expanding said fingers outwardly into said recess, and means for shifting said anchor means longitudinally of said mandrel.
- said shifting means including piston and cylinder means on said mandrel defining a pressure chamber, and means for applying fluid pressure to said chamber to longitudinally shift said anchor means.
- an inner casing hanger body including a body portion engageable with said seat, said outer casing hanger and said body having opposing walls forming an annular space, said body portion having passage means leading between said annular space and the space between said outer and inner casings, a mandrel adapted to be connected to a running string of pipe and having a central passage therethrough, a loading sleeve longitudinally shiftable on said mandrel, seal means and anchor means operable by said loading sleeve and respectively movable from first positions to second positions forming a seal in said annular space and anchoring said body in said outer casing hanger, and fluid pressure operated means for moving said loading sleeve longitudinally of said mandrel to move said seal means and said anchor means from said first positions to said second positions.
- said seal means including an axially deformable metallic ring ofaxially undulate form having inner and outer annular portions respectively inwardly and outwardly deformable into sealing relation with said opposing walls upon axial deformation of said ring.
- said seal means including an axially deformable metallic ring of axially undulate form having inner and outer annular portions respectively inwardly and outwardly deformable into scaling relation with said opposing walls upon axial deformation of said ring, and an annular body of elastomcric material in which said ring is embedded and deformable therewith into sealing engagement with said opposing walls.
- said seal means including an axially deformable metallic ring of axially undulate form having inner and outer annular portions respectively inwardly and outwardly deformable into sealing relation with said opposing walls upon axial deformation of said ring, and said anchor means including a plurality of circumferentially spaced laterally deformable lock fingers depending from said ring, said body having a wedge portion engageable by said fingers upon movement of said anchor means to said second position for deforming said fingers outwardly,
- said fluid pressure operated means including means providing a pressure chamber between said mandrel and said loading sleeve, a port leading between said mandrel passage and said chamber, and means for closing said port.
- said fluid pressure operated means including means providing a pressure chamber between said mandrel and said loading sleeve, a port leading between said mandrel passage andsaidchamber, and means for closing said port comprising a sleeve removably disposed in said body passage and having means engageable by a fishing tool for effecting removal of said sleeve and opening .of said port for admission of pressure from said mandrel passage to said chamber to move said loading sleeve along said mandrel in one direction.
- said fluid pressure operated means including means providing upper and lower pressure chambers between said mandrel and said loading sleeve, upper and lower ports leading between said mandrel passage and said upper and lower pressure chambers, means in said mandrel for closing said ports and removable from said mandrel passage to open said ports, said lower chamber having fluid therein when said lower port is closed to hold said loading sleeve against movement on said mandrel, and means movable in said mandrel passage for forming a seal between said ports and providing an inlet from said mandrel passage to said upper chamber and an outlet from saidlower chamber to said mandrel passage, whereby pressure supplied to said upper pressure chamber will effect movement of said loading sleeve along said mandrel.
Abstract
Description
Claims (19)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US77252168A | 1968-11-01 | 1968-11-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3561527A true US3561527A (en) | 1971-02-09 |
Family
ID=25095351
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US772521A Expired - Lifetime US3561527A (en) | 1968-11-01 | 1968-11-01 | Hydraulically set casing hanger apparatus and packing sleeve |
Country Status (5)
Country | Link |
---|---|
US (1) | US3561527A (en) |
JP (1) | JPS496962B1 (en) |
DE (1) | DE1945793A1 (en) |
FR (1) | FR2022338A1 (en) |
GB (1) | GB1252505A (en) |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3837684A (en) * | 1972-10-30 | 1974-09-24 | Vetco Offshore Ind Inc | Subsea casing hanger pack-off apparatus and method |
US4597448A (en) * | 1982-02-16 | 1986-07-01 | Smith International, Inc. | Subsea wellhead system |
FR2581125A1 (en) * | 1985-04-26 | 1986-10-31 | Vetco Offshore Ind Inc | SHUTTER AND DEVICE FOR SHUTTING AN ANNULAR SPACE, AND METHOD FOR PREPARING THE SHUTTER |
FR2603652A1 (en) * | 1985-05-02 | 1988-03-11 | Dril Quip Inc | WELL HEAD EQUIPMENT |
EP0289104A2 (en) * | 1987-04-30 | 1988-11-02 | Cooper Industries, Inc. | Annular wellhead seal |
US4815770A (en) * | 1987-09-04 | 1989-03-28 | Cameron Iron Works Usa, Inc. | Subsea casing hanger packoff assembly |
US4823871A (en) * | 1988-02-24 | 1989-04-25 | Cameron Iron Works Usa, Inc. | Hanger and seal assembly |
EP0316071A2 (en) * | 1987-11-11 | 1989-05-17 | Cooper Industries, Inc. | Wellhead structure |
US4869319A (en) * | 1987-11-11 | 1989-09-26 | Cameron Iron Works Usa, Inc. | Wellhead structure |
US4900067A (en) * | 1985-04-26 | 1990-02-13 | Vetco Gray Inc. | Retrievable packoff with an embedded flexible, metallic band |
US4962952A (en) * | 1989-03-29 | 1990-10-16 | Vetco Gray Inc. | Pressure tube with deflecting section |
US5022472A (en) * | 1989-11-14 | 1991-06-11 | Masx Energy Services Group, Inc. | Hydraulic clamp for rotary drilling head |
US20110240307A1 (en) * | 2008-03-28 | 2011-10-06 | Cameron International Corporation | Wellhead Hanger Shoulder |
US20130056218A1 (en) * | 2010-03-02 | 2013-03-07 | Fmc Technologies, Inc. | Riserless single trip hanger and packoff running tool |
CN103147713A (en) * | 2011-12-06 | 2013-06-12 | 韦特柯格雷公司 | Seal with bellows style nose ring and radially drivable lock rings |
US20130248196A1 (en) * | 2012-03-23 | 2013-09-26 | Vetco Gray Inc. | High-capacity single-trip lockdown bushing and a method to operate the same |
US20150300122A1 (en) * | 2011-09-19 | 2015-10-22 | Schlumberger Technology Corporation | Axially compressed and radially pressed seal |
US9945201B2 (en) * | 2015-04-07 | 2018-04-17 | Ge Oil & Gas Pressure Control Lp | Corrugated energizing ring for use with a split lockdown ring |
US11091974B2 (en) * | 2019-11-14 | 2021-08-17 | Chevron U.S.A. Inc. | Adjustable inner riser mandrel hanger assembly |
US11454075B2 (en) | 2018-01-15 | 2022-09-27 | Japan Agency For Marine-Earth Science And Technology | Continuous drilling system |
US11585178B2 (en) | 2018-06-01 | 2023-02-21 | Winterhawk Well Abandonment Ltd. | Casing expander for well abandonment |
US11634967B2 (en) | 2021-05-31 | 2023-04-25 | Winterhawk Well Abandonment Ltd. | Method for well remediation and repair |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5086853A (en) * | 1973-12-07 | 1975-07-12 | ||
US4381868A (en) * | 1981-07-24 | 1983-05-03 | Cameron Iron Works, Inc. | Pressure-actuated wellhead sealing assembly |
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US3335799A (en) * | 1964-10-07 | 1967-08-15 | Huntsinger Associates | Wellhead assembly with sealable bypass between the hanger and seat |
US3357486A (en) * | 1965-06-22 | 1967-12-12 | Atlantic Richfield Co | Well casing hanger |
US3404736A (en) * | 1967-02-17 | 1968-10-08 | Cameron Iron Works Inc | Apparatus for use in suspending casing from a wellhead |
US3460615A (en) * | 1967-10-09 | 1969-08-12 | Regan Forge & Eng Co | Circulating casing hanger and running tool apparatus |
US3468559A (en) * | 1965-10-23 | 1969-09-23 | Ventura Tool Co | Hydraulically actuated casing hanger |
-
1968
- 1968-11-01 US US772521A patent/US3561527A/en not_active Expired - Lifetime
-
1969
- 1969-07-09 FR FR6923368A patent/FR2022338A1/fr not_active Withdrawn
- 1969-09-08 GB GB1252505D patent/GB1252505A/en not_active Expired
- 1969-09-10 DE DE19691945793 patent/DE1945793A1/en not_active Withdrawn
- 1969-10-29 JP JP44086128A patent/JPS496962B1/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US3335799A (en) * | 1964-10-07 | 1967-08-15 | Huntsinger Associates | Wellhead assembly with sealable bypass between the hanger and seat |
US3357486A (en) * | 1965-06-22 | 1967-12-12 | Atlantic Richfield Co | Well casing hanger |
US3468559A (en) * | 1965-10-23 | 1969-09-23 | Ventura Tool Co | Hydraulically actuated casing hanger |
US3404736A (en) * | 1967-02-17 | 1968-10-08 | Cameron Iron Works Inc | Apparatus for use in suspending casing from a wellhead |
US3460615A (en) * | 1967-10-09 | 1969-08-12 | Regan Forge & Eng Co | Circulating casing hanger and running tool apparatus |
Cited By (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3837684A (en) * | 1972-10-30 | 1974-09-24 | Vetco Offshore Ind Inc | Subsea casing hanger pack-off apparatus and method |
US4597448A (en) * | 1982-02-16 | 1986-07-01 | Smith International, Inc. | Subsea wellhead system |
US4615544A (en) * | 1982-02-16 | 1986-10-07 | Smith International, Inc. | Subsea wellhead system |
AU591485B2 (en) * | 1985-04-26 | 1989-12-07 | Vetco Offshore Industries Inc. | Retrievable packoff |
FR2581125A1 (en) * | 1985-04-26 | 1986-10-31 | Vetco Offshore Ind Inc | SHUTTER AND DEVICE FOR SHUTTING AN ANNULAR SPACE, AND METHOD FOR PREPARING THE SHUTTER |
US4900067A (en) * | 1985-04-26 | 1990-02-13 | Vetco Gray Inc. | Retrievable packoff with an embedded flexible, metallic band |
FR2603652A1 (en) * | 1985-05-02 | 1988-03-11 | Dril Quip Inc | WELL HEAD EQUIPMENT |
US4757860A (en) * | 1985-05-02 | 1988-07-19 | Dril-Quip, Inc. | Wellhead equipment |
EP0289104A3 (en) * | 1987-04-30 | 1989-05-31 | Cameron Iron Works Usa, Inc. | Annular wellhead seal |
EP0289104A2 (en) * | 1987-04-30 | 1988-11-02 | Cooper Industries, Inc. | Annular wellhead seal |
US4815770A (en) * | 1987-09-04 | 1989-03-28 | Cameron Iron Works Usa, Inc. | Subsea casing hanger packoff assembly |
EP0316071A2 (en) * | 1987-11-11 | 1989-05-17 | Cooper Industries, Inc. | Wellhead structure |
US4869319A (en) * | 1987-11-11 | 1989-09-26 | Cameron Iron Works Usa, Inc. | Wellhead structure |
EP0316071A3 (en) * | 1987-11-11 | 1989-12-20 | Cameron Iron Works Usa, Inc. (A Delaware Corp.) | Wellhead structure and method of assembling same |
EP0510778A1 (en) * | 1987-11-11 | 1992-10-28 | Cooper Cameron Corporation | Wellhead structure |
US4823871A (en) * | 1988-02-24 | 1989-04-25 | Cameron Iron Works Usa, Inc. | Hanger and seal assembly |
US4962952A (en) * | 1989-03-29 | 1990-10-16 | Vetco Gray Inc. | Pressure tube with deflecting section |
US5022472A (en) * | 1989-11-14 | 1991-06-11 | Masx Energy Services Group, Inc. | Hydraulic clamp for rotary drilling head |
US20110240307A1 (en) * | 2008-03-28 | 2011-10-06 | Cameron International Corporation | Wellhead Hanger Shoulder |
US8851182B2 (en) * | 2008-03-28 | 2014-10-07 | Cameron International Corporation | Wellhead hanger shoulder |
US20130056218A1 (en) * | 2010-03-02 | 2013-03-07 | Fmc Technologies, Inc. | Riserless single trip hanger and packoff running tool |
US9217307B2 (en) * | 2010-03-02 | 2015-12-22 | Fmc Technologies, Inc. | Riserless single trip hanger and packoff running tool |
US9617823B2 (en) * | 2011-09-19 | 2017-04-11 | Schlumberger Technology Corporation | Axially compressed and radially pressed seal |
US20150300122A1 (en) * | 2011-09-19 | 2015-10-22 | Schlumberger Technology Corporation | Axially compressed and radially pressed seal |
CN103147713A (en) * | 2011-12-06 | 2013-06-12 | 韦特柯格雷公司 | Seal with bellows style nose ring and radially drivable lock rings |
US20130248196A1 (en) * | 2012-03-23 | 2013-09-26 | Vetco Gray Inc. | High-capacity single-trip lockdown bushing and a method to operate the same |
US9376881B2 (en) * | 2012-03-23 | 2016-06-28 | Vetco Gray Inc. | High-capacity single-trip lockdown bushing and a method to operate the same |
US9945201B2 (en) * | 2015-04-07 | 2018-04-17 | Ge Oil & Gas Pressure Control Lp | Corrugated energizing ring for use with a split lockdown ring |
US11454075B2 (en) | 2018-01-15 | 2022-09-27 | Japan Agency For Marine-Earth Science And Technology | Continuous drilling system |
US11585178B2 (en) | 2018-06-01 | 2023-02-21 | Winterhawk Well Abandonment Ltd. | Casing expander for well abandonment |
US11091974B2 (en) * | 2019-11-14 | 2021-08-17 | Chevron U.S.A. Inc. | Adjustable inner riser mandrel hanger assembly |
US11634967B2 (en) | 2021-05-31 | 2023-04-25 | Winterhawk Well Abandonment Ltd. | Method for well remediation and repair |
Also Published As
Publication number | Publication date |
---|---|
GB1252505A (en) | 1971-11-03 |
JPS496962B1 (en) | 1974-02-18 |
DE1945793A1 (en) | 1970-05-06 |
FR2022338A1 (en) | 1970-07-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: VETCO OFFSHORE, INC. 5740 RALSTON ST.VENTURA,CA.93 Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:VETCO INC.;REEL/FRAME:004056/0858 Effective date: 19820922 |
|
AS | Assignment |
Owner name: VETCO OFFSHORE INDUSTRIES, INC., 7135 ARDMORE ROAD Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:VETCO OFFSHORE, INC., A CORP. OF DE.;REEL/FRAME:004572/0533 Effective date: 19860421 |
|
AS | Assignment |
Owner name: CITIBANK, N.A., Free format text: SECURITY INTEREST;ASSIGNOR:VETCO GRAY INC., A DE. CORP.;REEL/FRAME:004739/0780 Effective date: 19861124 |
|
AS | Assignment |
Owner name: VETCO GRAY INC., Free format text: MERGER;ASSIGNORS:GRAY TOOL COMPANY, A TX. CORP. (INTO);VETCO OFFSHORE INDUSTRIES, INC., A CORP. (CHANGED TO);REEL/FRAME:004748/0332 Effective date: 19861217 |