EP3063361B1 - Système de paliers amélioré pour tensionneur de tube prolongateur - Google Patents

Système de paliers amélioré pour tensionneur de tube prolongateur Download PDF

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Publication number
EP3063361B1
EP3063361B1 EP14796987.7A EP14796987A EP3063361B1 EP 3063361 B1 EP3063361 B1 EP 3063361B1 EP 14796987 A EP14796987 A EP 14796987A EP 3063361 B1 EP3063361 B1 EP 3063361B1
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EP
European Patent Office
Prior art keywords
bearing
serial
stack
mount
radial
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Application number
EP14796987.7A
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German (de)
English (en)
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EP3063361A1 (fr
Inventor
Keith R. Ptak
Bruce HORDUSKY
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Lord Corp
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Lord Corp
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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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/002—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling
    • E21B19/004—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling supporting a riser from a drilling or production platform
    • E21B19/006—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling supporting a riser from a drilling or production platform including heave compensators
    • 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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/002—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling
    • 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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/002—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling
    • E21B19/004—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling supporting a riser from a drilling or production platform

Definitions

  • the subject matter disclosed herein relates to offshore oil platforms and support structures. More particularly, the subject matter disclosed herein relates to devices, systems, and methods for reducing riser tensioner system failures attributable to side-loads applied to hydraulic or pneumatic cylinders of riser tensioner systems.
  • riser tensioner systems are subjected to side-loading during normal operations. These side-loads, also known as lateral loads or bending loads, are forces impacting the riser tensioner system.
  • the riser tensioner systems include hydraulic or pneumatic cylinders. Most vertically positioned riser tensioner systems are vulnerable to being damaged by these side-loads as the result of oceanic wave energy being transferred to the riser tensioner systems due to the ebb and flow of the waves around these riser tensioner systems and the components supported by the riser tensioner systems.
  • the oceanic waves have more energy the forces transferred to the riser tensioner systems increase.
  • the oceanic waves create failure modes of the riser tensioner systems due to the high energy forces acting upon the riser tensioner systems as severe side-loads. This is a case of excessive side-loads impacting the hydraulic or pneumatic cylinders.
  • cylinders One failure mode for hydraulic or pneumatic cylinders, hereinafter referred to as cylinders, occurs when the cylinder is subjected to high lateral or bending loads which exceed the load bearing capabilities of the cylinder's sealing mechanism. These excessive loads can compromise the sealing mechanism, thereby reducing the life of the cylinder.
  • Another failure mode for cylinders occurs when high lateral or bending loads exceed the load bearing capabilities of a piston rod of the cylinder, thereby potentially preventing desired actuation of the piston rod of the cylinder. In such cases maintenance or replacement efforts are required, which significantly impact associated lost time and financial expenses. Because the available riser tensioner systems do not have a sufficient ability to resist the high-side loads the lifetime of the riser tensioner systems are reduced.
  • U.S. Patent No. 4,183,556A discloses a flexible joint assembly for interconnecting two conduits that transport fluid under pressure includes an annular housing and a tubular member of smaller diameter than the housing.
  • the housing has an opening at each end, as well as two spaced apart, annular flanges that extend radially inwardly with respect to the housing.
  • the tubular member has adjacent one end a flange which extends radially outwardly and which is disposed between the two flanges of the housing.
  • the other end of the tubular member projects from an opening at one end of the housing for attachment to a fluid conduit.
  • Between each housing flange and the flange of the tubular member is an annular flexible element that includes at least one body of elastomer.
  • One side of one of the flexible elements is exposed to the pressurized fluid flowing through the conduits and the joint, while one side of the other flexible element is exposed to the exterior of the joint.
  • annular cavity separate from the fluid flow path through the joint.
  • the cavity is fluid tight and is filled with a quantity of substantially incompressible liquid.
  • the liquid in the cavity serves to transmit pressure between the two flexible elements so that the elements act in series to share loads resulting from the difference between the external ambient pressure on the joint and the pressure on the fluid in the joint.
  • the overall construction of the joint thus reduces the pressure on each flexible element and can provide both a primary and a backup sealing mechanism for containing pressurized fluid within the joint.
  • European Patent No. EP0087922A2 discloses a terminator, which has been applied at the mudline, and at the platform level, to resist very large stresses in the riser pipes when the vertically moored platform (VMP) is subjected to wind, tide and current.
  • VMP vertically moored platform
  • a second or short terminator is used with the terminator to form a multiterminator which results in the length and weight of the terminator assembly for a given site being greatly reduced from that of the prior art terminator.
  • the cost of construction of the terminator assembly is drastically reduced with the use of our invention.
  • a novel bearing arrangement between the VMP and the terminator assembly is also disclosed.
  • U.S. Patent No. 4,593,941 A discloses an assembly of elements for conducting fluids where such fluids subject the interior of this assembly to a pressure greater than the pressure exerted on the exterior of the assembly by an ambient fluid.
  • the assembly comprises a plurality of elements connected end-to-end by connecting means and at least one pair of such elements being connected by a flexible connector means.
  • the flexible connector means includes a cylindrical housing that has a greater internal diameter than the external diameter of the elements that it is to connect, and is positioned such that these elements extend inwardly into said housing.
  • a retainer means is employed at each end of the housing and it is adapted for retaining the elements in a fixed position relative to the housing and the flexible connector means.
  • a pair of outer laminated assemblies formed of alternating layers of rigid and flexible material are positioned in the connector to accommodate tensile loads nest of the expected, and a pair of inner laminated assemblies are positioned to accommodate all compression loads and to effect part of the seal between the fluid pathway through the connector and the external environment.
  • a sliding seal element forms the other part of the seal and is also adapted to accommodate the relatively large tensile faces.
  • WO2013/062735 A2 discloses a riser tensioner system having a riser bearing.
  • a serial bearing for a riser tensioner system of a hydrocarbon system
  • the riser tensioner system including a vertical support frame, a plurality of vertically oriented cylinders which each comprise a piston rod that extends and retracts vertically relative to the support frame, a collar configured to engage with a riser, the collar having a plurality of laterally extending arms which each extend laterally to a location vertically above an associated one of the cylinders, the piston rods being attached to their associated arms with a serial bearing
  • said serial bearing including a radial bearing mount; a spherical bearing mount; characterized by an intermediate mount disposed between the radial bearing mount and the spherical bearing mount; a radial bearing stack disposed between the radial bearing mount and the intermediate mount, the radial bearing stack having elastomeric elements and shim elements, the elastomeric elements and the shim elements being disc shaped, the radial bearing stack being disposed such that
  • the hydrocarbon system 100 for use in discovering and producing hydrocarbons or petroleum materials is illustrated.
  • the hydrocarbon system 100 is located offshore and is tethered to the ocean floor 102.
  • the hydrocarbon system 100 includes buoyant platform foundations 104 that are tethered to the ocean floor 102 by tendons 106.
  • the platform foundations 104 support a deck foundation 108.
  • the hydrocarbon system 100 further includes a well template 110 from which multiple risers 112 rise up to the deck foundation 108. Each riser 112 is associated with separate wells or wellbores formed in the earth below the well template 110.
  • the hydrocarbon system 100 also includes a plurality of riser tensioner systems 200, one riser tensioner system 200 for each of the risers 112.
  • the riser tensioner systems 200 are configured to accommodate relative movement between the risers 112 and the platform foundations 104 or deck foundation 108 to prevent buckling of the risers 112
  • the riser tensioner systems 200 of hydrocarbon system 100 include a vertical support frame having legs configured for connection to the deck foundation 108.
  • the riser tensioner systems 200 include a plurality of vertically oriented cylinders which each comprise a piston rod that extends and retracts vertically relative to the support frame.
  • Each riser tensioner system 200 includes a collar configured to engage with a riser 112.
  • the collar has a plurality of laterally extending arms. Each arm extends laterally to a location vertically above an associated one of the cylinders.
  • the piston rods are attached to their associated arms with a serial bearing 300.
  • the serial bearings 300 accommodate both relative lateral movement between the piston rods and the collar as well as relative cocking movement between the piston rods and the collar. Accordingly, the serial bearings 300 collectively accommodate relative movement between the riser 112 and the cylinders of the riser tensioner systems 200.
  • the serial bearing 300 includes a radial bearing stack 302 and a spherical bearing stack 304 located in series to provide lateral and cocking compliance or movement, respectively.
  • the radial bearing stack 302 is a high capacity laminate (HCL) bearing manufactured with known HCL technologies.
  • the radial bearing stack 302 has elastomeric elements 306 and shim elements 308. The elastomeric elements 306 and the shim elements 308 are disc shaped.
  • the spherical bearing stack 304 is an HCL bearing manufactured with known HCL technologies.
  • the spherical bearing stack 304 has elastomeric elements 310 and shim elements 312.
  • the elastomeric elements 310 and the shim elements 312 are shaped as spherical sections.
  • Series bearing 300 is customizable for the particular end user's requirements.
  • Spherical bearing stack 304 accommodates cocking motions and radial bearing stack 302 accommodates radial motions relative to riser 112.
  • a spherical bearing stack is designed to allow radial motion in addition to the radial motion allowed by the radial bearing stack 302.
  • the performance characteristics of spring rates and motions allowed by the serial bearing 300 can be controlled by adding or removing elastomeric elements 306, 310 and shim elements 308, 312. In this case the spring rates are selected for a given set of environmental conditions defined by the user. The spring rates are modifiable to provide softer or stiffer spring rates, depending upon the end user's needs.
  • the radial bearing stack 302 is mounted between a radial bearing mount 314 and an intermediate mount 316.
  • the radial bearing mount 314 includes a flat and rigid disc having a diameter at least as large as a diameter of the radial bearing stack 304.
  • the intermediate mount 316 includes a rigid component having a flat radial bearing interface surface 318 connected to the radial bearing stack 302 and a spherical section shaped concave surface 320 connected to the spherical bearing stack 304.
  • the spherical bearing stack 304 is mounted between the intermediate mount 316 and a spherical bearing mount 322.
  • the spherical bearing mount 322 includes a spherical section shaped convex surface 324 connected to the spherical bearing stack 304.
  • the spherical bearing mount 322 also includes a riser interface 326 connected to a piston rod or other portion of a cylinder.
  • the spherical bearing mount 322 also includes an arm interface 328 connected to an arm of a collar.
  • the serial bearing 300 provides lateral and cocking compliance while maintaining high axial stiffness for transmission of axial loads. Serial bearing 300 reduces severe side-loads caused by extreme weather events (green impact waves), etc., that would otherwise result in high lateral loading of cylinder seals which adversely affects the seal life.
  • Cocking compliance provides elastomeric bearing protection from severe side-loads while the radial bearing stack 304 provides significantly increased compliance to protect the riser tensioner systems 200 from particularly severe side-loads.
  • the radial bearing mount 314 is welded or otherwise rigidly fixed to an arm of a collar.
  • the radial bearing mount is sized to overhang or extend beyond the radial bearing stack (not shown) so that through holes are provided to receive bolts or other fasteners that are configured to aid in attaching the radial bearing mount to the arm of a collar.
  • the spherical bearing mount 322 comprises recesses 328 or apertures configured to aid in attaching the spherical bearing 322 to a riser 112 or to another component rigidly attached to a riser 112.
  • the vertical orientation of the serial bearing 300 may be reversed to similarly provide the above-described lateral and cocking compliance.
  • spherical bearing stack 304 with elastomeric elements 310 and shim elements 312 is designed to have a specific stiffness.
  • spherical bearing stack 304 has a radial spring rate of about 781,000 lbf/in (about 136,774.1 kN/ m), a torsional spring rate of about 1900 in-lbf/deg (about 215 Nm/deg), a cocking spring rate of about 4000 in-lbf/deg (about 452 Nm/deg), and an axial spring rate of about 4.7 x 10 6 lbf/in (about 823,096.1 kN/m).
  • the axial and radial spring rates of the spherical bearing stack 304 are nonlinear, where an increase in load yields an increase in the stiffness.
  • the stiffness for the cocking spring rate will be less than 4000 in-lbf/deg (about 452 Nm/deg).
  • the maximum cocking motion of spherical bearing stack 304 is about +/- 15 degrees from the vertical. These stiffness values are added in series with the radial bearing values.
  • radial bearing stack 302 has stiffness values for compression, cocking and radial (shear) forces.
  • radial bearing stack 302 has a value of about 1.2 x 10 7 lbf/in (about 2,101,522 kN/m).
  • radial bearing stack 302 has a value of about 9 x 10 5 lbf ⁇ ft/deg (about 1,220.2 kN/m/deg).
  • radial (shear) radial bearing stack 302 has a value of about 22,000 lbf/in (about 3,852.8 kN/m).
  • radial bearing stack 302 has radial motion capabilities of about 1.125 inches to about 1.875 inches (about 2.86 centimeters to about 4.76 centimeters) under survival conditions and about 0.160 inches (about 0.41 centimeters) under fatigue conditions.
  • Spherical bearing stack 304 and radial bearing stack 302 are capable of being manufactured with direct bonding or sequential bonding.
  • the sequential bonding process uses structural adhesives to fabricate the serial bearing 300 in a modular manner. Sequential bonding provides for rapid application design iterations and facilitates using the elastomeric element 306 in multiple arrangements. Sequential bonding may reduce design manufacturing tooling efforts and costs.
  • the radial bearing stack 400 has an outside diameter of 16 inches (about 40.6 centimeters), a 4.813 inch (about 12.23 centimeters) inner diameter and an 8 inch (about 20.3 centimeters) thickness to yield a radial stiffness of 2200 lb/in (about 385,279 N/m).
  • the radial bearing stack 400 includes elastomeric element rings 402 and shim rings 404.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Support Of The Bearing (AREA)

Claims (13)

  1. Un palier sériel (300) pour un système tensionneur de tube prolongateur (200) d'un système à hydrocarbures (100), le système tensionneur de tube prolongateur (200) incluant un cadre de soutien vertical, une pluralité de cylindres orientés verticalement qui comprennent chacun une tige de piston qui s'étend et se rétracte verticalement relativement au cadre de soutien, un collier configuré pour se mettre en prise avec un tube prolongateur (112), le collier ayant une pluralité de bras s'étendant latéralement qui s'étendent chacun latéralement jusqu'à un emplacement verticalement au-dessus d'un cylindre associé parmi les cylindres, les tiges de piston étant attachées à leurs bras associés avec un palier sériel (300), ledit palier sériel (300) incluant :
    un support de palier radial (314) ;
    un support de palier sphérique (322) ;
    caractérisé par un support intermédiaire (316) disposé entre le support de palier radial (314) et le support de palier sphérique (322) ;
    un empilement de palier radial (302) disposé entre le support de palier radial (314) et le support intermédiaire (316), l'empilement de palier radial (302) ayant des éléments élastomères (306) et des éléments formant cales (308), les éléments élastomères (306) et les éléments formant cales (308) étant conformés en disques, l'empilement de palier radial (302) étant disposé de telle sorte que les disques sont perpendiculaires à un axe du palier sériel ; et
    un empilement de palier sphérique (304) disposé entre le support de palier sphérique (322) et le support intermédiaire (316), l'empilement de palier sphérique (304) ayant des éléments élastomères (310) et des éléments formant cales (312), les éléments élastomères (310) et les éléments formant cales (312) étant conformés en sections sphériques.
  2. Le palier sériel (300) de la revendication 1, dans lequel l'empilement de palier radial (302) inclut un stratifié haute capacité (HCL, High Capacity Laminate).
  3. Le palier sériel (300) de la revendication 2, dans lequel ledit HCL est formé en utilisant une liaison directe.
  4. Le palier sériel (300) de la revendication 2, dans lequel ledit HCL est formé en utilisant une liaison séquentielle.
  5. Le palier sériel (300) de la revendication 1, dans lequel l'empilement de palier sphérique (304) inclut un stratifié haute capacité (HCL).
  6. Le palier sériel (300) de la revendication 5, dans lequel ledit HCL est formé en utilisant une liaison directe.
  7. Le palier sériel (300) de la revendication 5, dans lequel ledit HCL est formé en utilisant une liaison séquentielle.
  8. Le palier sériel (300) de la revendication 1, dans lequel ledit empilement de palier radial (302) a une constante de rappel d'environ 1,2 x 107 lbf/pouce (environ 2 101 522 kN/m) en compression, d'environ 22 000 lbf/pouce (environ 3 852,8 kN/m) en cisaillement, et d'environ 9 x 105 lbf·pi/degré (environ 1 220,2 kNm/degré) pour une inclinaison.
  9. Le palier sériel (300) de la revendication 1, dans lequel ledit empilement de palier sphérique (304) a une constante de rappel radiale d'environ 781 000 lbf/pouce (environ 136 774,1 kN/m), une constante de rappel en torsion d'environ 1 900 po-lbf/degré (environ 215 Nm/degré), une constante de rappel en inclinaison d'environ 4 000 po-lbf/degré (environ 452 Nm/degré), et une constante de rappel axiale d'environ 4,7 x 106 lbf/pouce (environ 823 096,1 kN/m).
  10. Le palier sériel (300) de la revendication 9, où ladite constante de rappel axiale et ladite constante de rappel radiale sont non linéaires et sont configurées pour augmenter en raideur à mesure qu'une charge agissant sur ledit empilement de palier sphérique (304) augmente.
  11. Le palier sériel (300) de la revendication 9, dans lequel ledit empilement de palier sphérique (304) a une constante de rappel en inclinaison inférieure ou égale à environ 4 000 po-lbf/degré (environ 452 Nm/degré).
  12. Le palier sériel (300) de la revendication 1, dans lequel au moins un support parmi le support de palier radial (314) et le support de palier sphérique (322) est configuré pour se raccorder à un bras du collier.
  13. Le palier sériel (300) de la revendication 12, dans lequel un mouvement d'inclinaison dudit empilement de palier sphérique (304) est d'environ +/-15 degrés par rapport à un sens vertical relativement audit tube prolongateur.
EP14796987.7A 2013-11-01 2014-10-31 Système de paliers amélioré pour tensionneur de tube prolongateur Active EP3063361B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361898860P 2013-11-01 2013-11-01
PCT/US2014/063425 WO2015066472A1 (fr) 2013-11-01 2014-10-31 Système de paliers amélioré pour tensionneur de tube prolongateur

Publications (2)

Publication Number Publication Date
EP3063361A1 EP3063361A1 (fr) 2016-09-07
EP3063361B1 true EP3063361B1 (fr) 2020-05-06

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EP14796987.7A Active EP3063361B1 (fr) 2013-11-01 2014-10-31 Système de paliers amélioré pour tensionneur de tube prolongateur

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US (1) US20160273280A1 (fr)
EP (1) EP3063361B1 (fr)
BR (1) BR112016009887B1 (fr)
WO (1) WO2015066472A1 (fr)

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US20190178040A1 (en) * 2016-08-29 2019-06-13 Lord Corporation High degree of freedom riser tensioner system
US10584745B2 (en) 2018-02-21 2020-03-10 Lord Corporation Asymmetric bearing for riser tensioner system
US10273766B1 (en) * 2018-03-08 2019-04-30 Jle Inovaçao Tecnologica Ltda Epp Plug and play connection system for a below-tension-ring managed pressure drilling system

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Publication number Publication date
BR112016009887B1 (pt) 2021-12-21
WO2015066472A1 (fr) 2015-05-07
BR112016009887A2 (pt) 2017-08-01
US20160273280A1 (en) 2016-09-22
EP3063361A1 (fr) 2016-09-07

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