WO2014014357A1 - Ensemble colonne montante haute pression - Google Patents

Ensemble colonne montante haute pression Download PDF

Info

Publication number
WO2014014357A1
WO2014014357A1 PCT/NO2013/000035 NO2013000035W WO2014014357A1 WO 2014014357 A1 WO2014014357 A1 WO 2014014357A1 NO 2013000035 W NO2013000035 W NO 2013000035W WO 2014014357 A1 WO2014014357 A1 WO 2014014357A1
Authority
WO
WIPO (PCT)
Prior art keywords
high pressure
latching arrangement
riser
riser assembly
split ring
Prior art date
Application number
PCT/NO2013/000035
Other languages
English (en)
Inventor
Øystein LUKTVASSLIMO
Øystein MØGEDAL
Øystein WÆSTAD
Original Assignee
Aker Subsea As
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aker Subsea As filed Critical Aker Subsea As
Priority to GB1501199.2A priority Critical patent/GB2521283B/en
Publication of WO2014014357A1 publication Critical patent/WO2014014357A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/01—Risers

Definitions

  • the present invention relates to a high pressure riser assembly wherein an upper section of the assembly can be disconnected from a riser string extending down to a subsea location in order to avoid mutual movement between the upper section and a surface installation during heave motions.
  • a high pressure riser string extends from the seabed and is connected to a floating installation through a tension ring which is connected to the tensioning system of the installation. At a distance below the tension ring, below the water surface, there is arranged a latching arrangement together with an upper blow out preventer (upper BOP). From the floating installation a high pressure sleeve is lowered inside a larger diameter sleeve of the riser string. The high pressure sleeve can be latched to the latching arrangement, so as to complete a high pressure path from the seabed up to the installation. During work on the upper part of the high pressure sleeve, it can reciprocate within the riser string, above the position of the latching arrangement.
  • a high pressure riser assembly comprising a riser string extending upwards from the seabed towards a floating structure.
  • the floating structure has a heave compensating tensioning system which is connected to an upper portion of the riser string via a tension ring.
  • the high pressure riser assembly further comprises a high pressure sleeve, the lower end of which is adapted to be releasably connec- ted to the upper end of the riser string by means of a latching arrangement.
  • the latching arrangement is arranged above water level. Moreover, the latching arrangement is exposed.
  • the latching arrangement is exposed to the ambient air in a space between the floating structure and the water level in such a way that the operator may perform visual inspection of the latching arrangement without removing any components covering the latching arrangement.
  • the upper portion of the riser string can comprise a high pressure riser joint to which a tension ring adapter is attached.
  • the tension ring is attached to the tension ring adapter.
  • the high pressure riser joint will typically be called a work- over riser joint.
  • the latching arrangement and the tension ring adapter is one unit. E.g. it can be made by forging. In another embodiment, one can imagine this unit also to comprise an interface or connector to the riser string / a workover riser. Such a connector could also be incorporated in the one unit, together with the tension ring adapter and the latching arrangement.
  • the tension ring adapter can for instance be connected to the riser string by means of threads or by welding.
  • the high pressure sleeve when the high pressure sleeve is connected to the riser string, the high pressure sleeve may be exposed to the surroundings above the position of the latching arrangement. I.e. there is no sleeve arranged around the high pressure sleeve.
  • a receiving bore of a latching arrangement main body comprises an inclined entering face against which a split ring of a mating part, such as the lower end of the high pressure sleeve, is adapted to slide when entering the receiving bore.
  • the split ring is radially retracted when sliding against said entering face.
  • the split ring is adapted to engage a locking profile in the latching arrangement main body.
  • a plurality of hydraulic actuators are preferably arranged about the perimeter of the latching arrangement main body and adapted to force the split ring in a radial direction out of said locking profile.
  • a high pressure riser assembly comprising a riser string extending upwards from the seabed towards a floating structure.
  • the floating structure has a heave compensating tensioning system which is connected to an upper portion of the riser string via a tension ring.
  • the high pressure riser assembly further comprises a high pressure sleeve, the lower end of which is adapted to be releasably connec- ted to the upper end of the riser string by means of a latching arrangement.
  • the latching arrangement comprises a split ring which is adapted to be moved into a locking profile in a receiving bore of a latching arrangement main body.
  • the receiving bore of the latching arrangement main body comprises an inclined entering face against which the split ring is adapted to slide when entering the receiving bore The split ring is radially retracted when sliding against said entering face.
  • a plurality of hydraulic actuators are arranged about the perimeter of the latching arrangement main body and are adapted to force the split ring in a radial direction out of said locking profile.
  • Fig. 1 is a schematic view of a high pressure riser assembly according to one aspect of the invention
  • Fig. 2 is a schematic view of a high pressure riser assembly according to a second aspect of the invention
  • Fig. 3 is a schematic view of a high pressure riser assembly similar to the
  • Fig. 4 is a cross section view of a latching arrangement
  • Fig. 5 is an enlarged cross section view of a part of Fig. 4;
  • Fig. 6 is a schematic view of the latching arrangement in Fig 4 together with a tension ring and a tension ring adapter, mounted onto a workover riser;
  • Fig. 7 is a schematic view of the same components as shown in Fig. 6, however with a different configuration.
  • FIG. 1 shows a high pressure riser assembly 100 according to one aspect of the present invention.
  • a floating surface installation has a drill floor 101 down through which a high pressure (HP) sleeve 103 extends.
  • HP high pressure
  • a high pressure riser string 105 extends upwards from a Xmas tree 107 and an emergency disconnection package (EDP) 109.
  • EDP emergency disconnection package
  • a latching arrangement 11 1 The latching arrangement 1 11 is adapted to connect to a lower part of the HP sleeve 103 in such way that a high pressure path can exist from the subsea well, through the bore of the HP riser string 105 and further through the bore of the HP sleeve 103 up to the floating installation (represented by the drill floor 101 ).
  • a surface flow tree (SFT) 113 At an upper portion of the HP sleeve 103 there is arranged a surface flow tree (SFT) 113. The SFT 113 and the HP sleeve 103 depend from a tension frame 115 in the derrick.
  • the latching arrangement 111 is arranged below the sea level 117.
  • the HP sleeve 103 depends down from the floating installation within a spacer joint 1 19 and an outer barrel 121.
  • the spacer joint 119 is connected to the floating installation, depending down from the drill floor 101.
  • the spacer joint 119 exhibits an outer diameter which is smaller than the inner diameter of the outer barrel 121 , and is adapted to reciprocate within the outer barrel 121
  • the outer barrel 121 is connected to and provides tension in the HP riser string 105. Via a tension ring 123 arranged at an upper portion of the outer barrel 121 , the outer barrel 121 is connected to a set of tensioning wires 125 which are a part of the tensioning system of the floating installation.
  • the latching arrangement 111 will be described in detail further below.
  • the riser string 105 can be provided with a riser valve (not shown), for instance, that can be arranged at some location between the EDP 109 and the upper portion of the riser string 105.
  • the HP sleeve 103 has one disconnected mode where it heaves along with the drill floor 101 and thus does not move with respect to the drill floor 101 , and connected mode where it does not move with respect to the riser string 105, but moves with respect to the drill floor 101.
  • Fig. 2 shows another embodiment of a HP riser assembly 200
  • Several of the components of the HP riser assembly 200 shown in Fig. 2 are the same as the ones shown in Fig. 1. Corresponding components are given the same reference number, however in the 200-series in stead of in the 100-series.
  • a particular difference from the embodiment shown in Fig. 1 is that the latching arrangement 21 1 is arranged above the sea level 217.
  • neither the outer barrel 221 nor a spacer joint (not shown in Fig. 2) cover the HP sleeve 203.
  • the latching arrangement 211 is covered by any outer pipe.
  • the tension ring 223 is connected to the outer barrel 221 and the latching arrangement 211 is in a position above the tension ring 223
  • Fig 3 shows yet another HP riser assembly 300.
  • the HP sleeve 303 is exposed.
  • the latching arrangement 31 1 is arranged above sea level 317 and is also exposed.
  • HP riser assembly 200 shown in Fig. 2 A significant difference from the HP riser assembly 200 shown in Fig. 2 is that the HP riser assembly 300 shown in Fig. 3 is without the outer barrel (221 in Fig. 2). In stead the tension ring 323 is connected to the upper portion of the HP riser string 305 via a tension ring adapter. This component will be described later under reference to Fig. 6 and Fig. 7. Thus, a simplified HP riser assembly is provided.
  • the latching arrangement 11 could fit into the three embodiments of HP riser assemblies 100, 200, 300 described above.
  • the latching arrangement 11 is attached to the upper part of the HP riser string 5 to which it is connected by means of a not shown interface at the lower end of the latching arrangement.
  • the latching arrangement could also be attached to the lower end of the HP sleeve 3, 103, 203, 303 and be adapted to connect to the upper part of the riser string
  • Fig. 4 shows a latching arrangement main body 51 in a cross section view.
  • the main body 51 has a bore 53 aligned with the bore of the riser string below it and to which it is connected.
  • an inner receiving bore 55 the lower portion of a HP sleeve 3 has landed.
  • a sealing section 57 provided with high pressure seals
  • the lower part of the HP sleeve 3 is provided with a split ring groove 59 in which a split ring 61 is maintained, cf Fig. 5.
  • the split ring 61 is adapted to expand radially outwards into a facing locking profile 63 in the receiving bore 55 of the main body 51. That is, when the lower part of the HP sleeve 3 is not in engagement with the latching arrangement 11 , the split ring 61 extends radially out from the outer diameter of the lower part of the HP sleeve 3, and thus beyond the diameter of the receiving bore 55.
  • a plurality of hydraulic actuators 67 are arranged in the main body 51 about the perimeter.
  • the actuators 67 are adapted to push the split ring 61 radially inwards and out of engagement of the locking profile 63.
  • the actuators 67 can typically be hydraulic pistons acting directly onto the split ring 61.
  • Fig. 6 shows a latching arrangement 11 , a tension ring 25 and a tension ring adapter 81 connected to a HP riser 5
  • This configuration fits with the high pressure riser assembly 300 described above with reference to Fig 3
  • the tension ring 25 is connected directly to a workover riser 5 by means of a tension ring adapter 81.
  • the latching arrangement 11 and the tension ring adapter 81 has been produced as one unit, for instance by forging.
  • the latching arrangement 1 is connected to the HP riser string 5 at a vertical distance from the tension ring adapter 81.
  • the tension ring 23 exhibits an inner bore 23a which receives the tension ring adapter 81.
  • the two components exhibit abutting landing faces that transmit the vertical forces between the set of tensioning wires 25 and the HP riser string 5.
  • the latching arrangement described herein in stead of being arranged on the upper part of the riser string, may be arranged to the lower end of the HP sleeve and be adapted to connect to the upper end of the riser string.

Landscapes

  • 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)
  • Earth Drilling (AREA)
  • Motor Or Generator Current Collectors (AREA)

Abstract

Cette invention concerne un ensemble colonne montante haute pression (200, 300) comprenant une colonne montante (205, 305) s'étendant vers le haut à partir du lit marin vers une structure flottante (201, 301). Ladite structure flottante comprend un système tendeur compensateur de houle (225, 325) relié à une partie supérieure de la colonne montante (205, 305) par l'intermédiaire d'un anneau de tension (223, 323). Ledit ensemble colonne montante haute pression (200, 300) comprend un manchon haute pression (203, 303), dont l'extrémité inférieure est conçue pour être raccordée de manière libérable à l'extrémité supérieure de la colonne montante (205, 305) au moyen d'un agencement de verrouillage (211, 311). Ledit agencement de verrouillage (211, 311) est disposé au-dessus du niveau de l'eau (217, 317) et l'agencement de verrouillage (211, 311) est exposé.
PCT/NO2013/000035 2012-07-18 2013-07-18 Ensemble colonne montante haute pression WO2014014357A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1501199.2A GB2521283B (en) 2012-07-18 2013-07-18 High pressure riser assembly

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20120835 2012-07-18
NO20120835A NO338827B1 (no) 2012-07-18 2012-07-18 Høytrykks stigerørsammenstilling

Publications (1)

Publication Number Publication Date
WO2014014357A1 true WO2014014357A1 (fr) 2014-01-23

Family

ID=49949082

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2013/000035 WO2014014357A1 (fr) 2012-07-18 2013-07-18 Ensemble colonne montante haute pression

Country Status (3)

Country Link
GB (1) GB2521283B (fr)
NO (1) NO338827B1 (fr)
WO (1) WO2014014357A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6173781B1 (en) * 1998-10-28 2001-01-16 Deep Vision Llc Slip joint intervention riser with pressure seals and method of using the same
US20060021755A1 (en) * 2004-07-28 2006-02-02 Amin Radi Underbalanced marine drilling riser
US20080251257A1 (en) * 2007-04-11 2008-10-16 Christian Leuchtenberg Multipart Sliding Joint For Floating Rig

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2203508A (en) * 1987-04-16 1988-10-19 Shell Int Research System and method for securing a marine riser to a floating structure
US6279662B1 (en) * 1998-03-25 2001-08-28 Carlos A. Torres Pipe running system and method
NO333539B1 (no) * 2004-03-16 2013-07-08 Ocean Riser Systems As System og fremgangsmåte for å veksle mellom ordinær boring og høytrykkoperasjoner
GB2469806B (en) * 2009-04-27 2013-11-06 Statoil Petroleum As Pressure joint
US8388255B2 (en) * 2009-07-13 2013-03-05 Vetco Gray Inc. Dog-type lockout and position indicator assembly

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6173781B1 (en) * 1998-10-28 2001-01-16 Deep Vision Llc Slip joint intervention riser with pressure seals and method of using the same
US20060021755A1 (en) * 2004-07-28 2006-02-02 Amin Radi Underbalanced marine drilling riser
US20080251257A1 (en) * 2007-04-11 2008-10-16 Christian Leuchtenberg Multipart Sliding Joint For Floating Rig

Also Published As

Publication number Publication date
NO338827B1 (no) 2016-10-24
NO20120835A1 (no) 2014-01-20
GB2521283B (en) 2019-04-03
GB2521283A (en) 2015-06-17
GB201501199D0 (en) 2015-03-11

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