EP2176506A2 - Verbinderanordnung für ein steigrohr mit seegangsausgleich - Google Patents
Verbinderanordnung für ein steigrohr mit seegangsausgleichInfo
- Publication number
- EP2176506A2 EP2176506A2 EP08788333A EP08788333A EP2176506A2 EP 2176506 A2 EP2176506 A2 EP 2176506A2 EP 08788333 A EP08788333 A EP 08788333A EP 08788333 A EP08788333 A EP 08788333A EP 2176506 A2 EP2176506 A2 EP 2176506A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- connector
- riser
- connector assembly
- vessel
- parts
- 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.)
- Granted
Links
- 230000033001 locomotion Effects 0.000 claims abstract description 25
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- POIUWJQBRNEFGX-XAMSXPGMSA-N cathelicidin Chemical compound C([C@@H](C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CO)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H]([C@@H](C)CC)C(=O)NCC(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](C(C)C)C(=O)N1[C@@H](CCC1)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CO)C(O)=O)NC(=O)[C@H](CC=1C=CC=CC=1)NC(=O)[C@H](CC(O)=O)NC(=O)CNC(=O)[C@H](CC(C)C)NC(=O)[C@@H](N)CC(C)C)C1=CC=CC=C1 POIUWJQBRNEFGX-XAMSXPGMSA-N 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 244000261422 Lysimachia clethroides Species 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
- E21B19/24—Guiding or centralising devices for drilling rods or 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/01—Risers
-
- 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
-
- 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
Definitions
- This invention relates to a connector assembly for use on a vessel to eliminate relative vertical movement between the vessel and equipment attached to a riser attached to a sub-sea well.
- Well intervention techniques include the use of coiled tubing, wirelines or a process where individual pipe sections are screwed together to form a continuous pipe in the well, also called snubbing.
- a coiled tubing intervention a continuous tube initially wound on a spool is unwound, straightened and pushed down a hole, hi order to do this various items of equipment are located in the area above the well, all supported on a common frame.
- a typical set-up involves, from top to bottom, a goose neck for guiding and straightening the coiled tubing as it is fed from the spool, an injector head for pushing the tubing into or pulling it out of the well, a stuffing box to form a seal around the tubing, and a blow out preventer.
- the blow out preventer itself may consist of a number of components, such as a pipe ram, a slip ram, a shear ram and a blind ram.
- a riser which is attached to the top of the well at the sea floor.
- the riser extends from the top of the well at the sea floor, up to the work-deck of the vessel.
- the length of the riser depends on the sea depth and may be considerable, so in order to prevent it from collapsing it is supported by a tensioning mechanism attached to the vessel.
- the tensioning mechanism compensates for the vessel's heave motion, so that the riser is supported without buckling and the top of the riser does not move vertically relativeio the sea floor.
- the well intervention equipment can be stationary relative to the structure of the vessel, making preparation, testing and maintenance of the equipment a safer and easier operation than would be the case if it were fixed to the riser and moving relative to the vessel.
- the system is thus designed to eliminate relative vertical heave motions between the equipment and the vessel.
- the known system involves the provision of a low pressure seal during the heave elimination mode and thus requires that the telescoping cylinders have a dynamic sliding seal acting therebetween.
- the inventor has now recognised that in many well intervention situations there is in fact no need to provide a continuous sealed conduit between the riser and the intervention equipment.
- a connector assembly for use on a vessel to eliminate relative vertical movement between the vessel and a riser attached to a sub-sea well, the connector assembly comprising a first connector part to be secured to the riser, a second connector part to be secured to the vessel, the second connector part being connectable to the first connector part without relative axial movement and disconnectable from the first connector part to allow relative .
- axial movement between the first and second connector parts, and an alignment mechanism which, when the first and second connector parts are disconnected, maintains the connector parts in axial alignment and spaced apart in a non-sealed manner by a gap the size of which varies with relative axial movement of the first and second connector parts.
- the first and second connector parts can be disconnected to allow relative axial movement.
- the size of the unsealed gap between the connector parts varies with heave motion but as the connector parts are maintained in axial alignment if it is desired to insert any equipment, such as tubular piping, into the riser then this can still be done even though there is a varying gap. In some situations, therefore, this will be a relatively inexpensive solution to the problem of relative movement of a vessel and a riser due to the vessel's heave motion.
- the alignment mechanism comprises a first support extending laterally from the first connector part, a second support extending laterally from the second connector part, and a guiding device laterally spaced from the first and second connector parts and extending between the first and second supports to maintain the first and second connector parts in axial alignment during relative axial movement thereof.
- the guiding device may comprise a guide member fixed to one of the first and second supports and movable relative to the other of the supports.
- the guide member may be fixed to the first support, but preferably it is fixed to the second support.
- a protective casing may be provided for the guiding device.
- the protective casing may take the form of a cylinder.
- the guide member of the guiding device may be slidably received in the cylinder. .
- a plurality of guiding devices are provided, each laterally spaced from the first and second connector parts. This can help to deal with any lateral or torsional loading.
- Such plural guiding devices are advantageously . equiangularly spaced around the central axis of the first and second connector parts.
- three guiding devices are provided. There may thus be a plurality of guiding devices disposed laterally outwardly of the connector parts. In order to protect the guiding devices from impacting with other equipment, e.g.
- a protective shield member may be disposed laterally outwardly of the plurality of guiding devices.
- a shield member is preferably generally cylindrical.
- the first support may be provided with a flange for connecting it to the first connector, which may have a corresponding flange.
- the second support may be provided with a flange for connection to the second connector, which may have a corresponding flange.
- the first and second connector parts may belong to a quick latch connector of a known type.
- Such connectors involve one tubular portion mating within another tubular portion and a locking mechanism and a sealing system which is automatically engaged and energized as the two mating halves are brought together by an axial force.
- the locking mechanism may be released and the seal de-energized by applying hydraulic pressure supplied through a hydraulic line, as long as there is no internal pressure nor axial tension force applied .
- the pressure applied and the two connector parts can be separated by moving them axially apart.
- the alignment mechanism may have at least one clamp for attachment to the riser.
- a plurality e.g. two
- a plurality e.g. two
- the or each clamp may act as a support(s) for the protective casing.
- Figure 1 is a perspective view of a connector assembly according to the invention
- Figure 2 is an enlargement of detail "II” in Figure 1;
- Figure 3 is an enlargement of detail "III” in Figure 1; and
- Figure 4 is an enlargement of detail "FV" in Figure 1.
- the connector assembly consists of a first or lower connector part 4 and a second or upper connector part 3.
- the two connector parts are supported by an . alignment mechanism 30 which is arranged to maintain the connector parts in axial alignment whilst they move towards and away from each other.
- the lower connector part 4 is in a stationary position relative to a riser, whilst the upper connector part 3 is in a stationary position relative to a vessel.
- an uppermost section 20 of an intervention riser has a lower flange 21 attached to the next lower section of the intervention riser (not shown), with further sections, being provided below to make up the distance down to the well head at the sea floor.
- the lower end of the complete riser assembly is then attached to the top of the well.
- a flange 14 is provided (see Figure 3).
- the alignment mechanism 30 is secured to the upper riser section 20 by means of an upper clamp 16 and a lower clamp 17.
- Each clamp supports three vertically extending protection casings 15, arranged at equal circumferential spacings around the riser section 20.
- a protection cap 18 protects the casings 15 (and an umbilical if required) against contact with other equipment.
- the protection cap 18 is only partly shown in Figure 1.
- the alignment mechanism 30 further has three vertical guide members 5, each slidably received in a respective casing 15.
- an upper support 2 is provided at the top of the guide members 5 at the top of the guide members 5 .
- the upper support has an upper flange 1 for connection to the lower end of intervention equipment, such as a blow-out preventer or similar, either directly, or via an extension joint.
- intervention equipment is supported by a frame. Neither the intervention equipment nor the frame is shown in the drawings.
- the upper support 2 is provided with a lower flange 12 which is connected to an upper flange 10 of the upper connector part 3. When the upper and lower connector parts 3, 4 are to move relative to each other, then the upper support 2 is fixed relative to the vessel by virtue of its connection to the intervention equipment via upper flange 1.
- a lower support 6 is formed with three vertical openings 23 through which the three guide members 5 extend in a relatively slidable manner.
- the lower support 6 has a lower flange 7 secured to the upper flange 14 of the riser section 20, and an upper flange 13 secured to a lower flange 11 of the lower connector part 4.
- the lower support 6 is fixed relative to the riser, whilst the upper support 2 is moveable relative to the lower support by virtue of the guide members 5 sliding within openings 23.
- the connector parts 3 and 4 (which in this embodiment make up a quick latch connector) are fixed together and the complete riser including the connector is pressurized, hence the complete stack moves vertically relative to the vessel as it heaves. In this situation the two parts of the quick latch connector 3 and 4 are engaged into each other, making a pressure tight connection.
- valves further down in the riser and well are closed, and the pressure in the upper part of the riser stack can be flushed clean and purged by an inert gas before being bled off.
- the quick latch locking mechanism is remotely operated by means of hydraulics, and the quick latch connector parts 3 and 4 can be separated by hoisting the tension/lifting frame upwards by means of a hoist or jack attached to the vessel structure.
- the upper connector part 3 When separated, the upper connector part 3 will still be laterally centred above the lower connector part 4, by means of the sliding lower support 6, attached to the lower part 4, sliding along the three vertical guide members 5 which are all fixed to the upper support 2, which is attached to the upper connector part 3.
- the upper and lower connector parts are separated by an axial gap in non-sealed manner. All three guides are protected by the three separate protection casings 15, attached to the upper intervention riser section by means of the upper guide clamp 16 and the lower guide clamp 17.
- the upper connector part 3 and the attached lifting/tensioning frame together with the intervention equipment is no longer attached to, and is not moving together with, the riser. It can now be parked in a fixed position with no relative movements to the vessel's structure. This fixed parked position without any relative movements allows preparation and maintenance work to be performed in a safe manner. This in turn will increase the operational window of the intervention vessel as the requirements for calm wave and wind conditions are reduced. As the vessel heaves, the size of the axial gap between the upper and lower connector parts varies.
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)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US93552807P | 2007-08-17 | 2007-08-17 | |
GBGB0716130.0A GB0716130D0 (en) | 2007-08-17 | 2007-08-17 | Connector assembly |
PCT/GB2008/002764 WO2009024760A2 (en) | 2007-08-17 | 2008-08-15 | Connector assembly for riser with heave compensation |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2176506A2 true EP2176506A2 (de) | 2010-04-21 |
EP2176506B1 EP2176506B1 (de) | 2018-12-26 |
Family
ID=38566605
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08788333.6A Not-in-force EP2176506B1 (de) | 2007-08-17 | 2008-08-15 | Verbinderanordnung für ein steigrohr mit seegangsausgleich |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2176506B1 (de) |
BR (1) | BRPI0815538B1 (de) |
DK (1) | DK2176506T3 (de) |
GB (2) | GB0716130D0 (de) |
WO (1) | WO2009024760A2 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013050410A1 (en) | 2011-10-04 | 2013-04-11 | Bayer Intellectual Property Gmbh | RNAi FOR THE CONTROL OF FUNGI AND OOMYCETES BY INHIBITING SACCHAROPINE DEHYDROGENASE GENE |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO20011042L (no) * | 2001-02-28 | 2002-08-29 | Fred Olsen Productions As | Anordning ved en flytende produksjonsenhet |
NO315807B3 (no) * | 2002-02-08 | 2008-12-15 | Blafro Tools As | Fremgangsmate og anordning ved arbeidsrorkopling |
NO317230B1 (no) * | 2002-11-12 | 2004-09-20 | Nat Oilwell Norway As | Todelt teleskopisk strammer for stigeror ved en flytende installasjon for olje- og gassproduksjon |
US7219739B2 (en) * | 2005-03-07 | 2007-05-22 | Halliburton Energy Services, Inc. | Heave compensation system for hydraulic workover |
US20070084606A1 (en) * | 2005-10-13 | 2007-04-19 | Hydraulic Well Control, Llc | Rig assist compensation system |
-
2007
- 2007-08-17 GB GBGB0716130.0A patent/GB0716130D0/en not_active Ceased
-
2008
- 2008-08-15 DK DK08788333.6T patent/DK2176506T3/en active
- 2008-08-15 GB GB0814975.9A patent/GB2451958B/en not_active Expired - Fee Related
- 2008-08-15 EP EP08788333.6A patent/EP2176506B1/de not_active Not-in-force
- 2008-08-15 WO PCT/GB2008/002764 patent/WO2009024760A2/en active Application Filing
- 2008-08-15 BR BRPI0815538-0A patent/BRPI0815538B1/pt not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO2009024760A2 * |
Also Published As
Publication number | Publication date |
---|---|
GB0814975D0 (en) | 2008-09-24 |
WO2009024760A2 (en) | 2009-02-26 |
GB0716130D0 (en) | 2007-09-26 |
EP2176506B1 (de) | 2018-12-26 |
BRPI0815538A2 (pt) | 2015-02-10 |
WO2009024760A3 (en) | 2009-05-22 |
GB2451958A (en) | 2009-02-18 |
BRPI0815538B1 (pt) | 2018-02-14 |
DK2176506T3 (en) | 2019-04-01 |
GB2451958B (en) | 2012-07-11 |
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