WO2013134265A1 - Offshore system with subsea riser - Google Patents
Offshore system with subsea riser Download PDFInfo
- Publication number
- WO2013134265A1 WO2013134265A1 PCT/US2013/029127 US2013029127W WO2013134265A1 WO 2013134265 A1 WO2013134265 A1 WO 2013134265A1 US 2013029127 W US2013029127 W US 2013029127W WO 2013134265 A1 WO2013134265 A1 WO 2013134265A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- riser
- tension
- connector
- subsea
- platform
- Prior art date
Links
- 230000006835 compression Effects 0.000 claims abstract description 12
- 238000007906 compression Methods 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 238000005553 drilling Methods 0.000 claims description 7
- 230000003319 supportive effect Effects 0.000 claims 1
- 239000012530 fluid Substances 0.000 description 5
- 210000002435 tendon Anatomy 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
-
- 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
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/02—Supports for the drilling machine, e.g. derricks or masts 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
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/12—Underwater drilling
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0095—Connections of subsea risers, piping or wiring with the offshore structure
Definitions
- Drilling and producing offshore oil and gas wells includes the use of offshore platforms for the exploitation of undersea petroleum and natural gas deposits.
- floating platforms such as spars, tension leg platforms, extended draft platforms, and semi-submersible platforms
- TLP tension leg platform
- the TLP is permanently moored by groups of tethers, called a tension legs or tendons, that eliminate virtually all vertical motion of the TLP due to wind, waves, and currents.
- the tendons are maintained in tension at all times by ensuring net positive TLP buoyancy under all environmental conditions.
- the tendons stiffly restrain the TLP against vertical offset, essentially preventing heave, pitch, and roll, yet they compliantly restrain the TLP against lateral offset, allowing limited surge, sway, and yaw.
- Another type of platform is a spar, which typically consists of a large-diameter, single vertical cylinder extending into the water and supporting a deck. Spars are moored to the seabed like TLPs, but whereas a TLP has vertical tension tethers, a spar has more conventional mooring lines.
- the offshore platforms typically support risers that extend from one or more wellheads or structures on the seabed to the platform on the sea surface.
- the risers connect the subsea well with the platform to protect the fluid integrity of the well and to provide a fluid conduit to and from the wellbore.
- a drilling riser is used to maintain fluid integrity of the well.
- a production riser is installed.
- the risers that connect the surface wellhead to the subsea wellhead can be thousands of feet long and extremely heavy. To keep the risers as light as possible, they are designed so as to not be able to withstand their own weight, even when in water.
- the connectors used to connect sections of some risers e.g. production risers, are designed to be weaker than the riser sections themselves.
- An example of such connectors is a thread and couple connector where the ends of two adjacent riser sections are both threaded into the connector. When the riser is placed under conditions exceeding operating limits, the connectors will actually be the first components to fail.
- the tensioning mechanism must exert a substantially continuous tension force to the riser within a well-defined range so as to compensate for the movement of the platform.
- Hydro-pneumatic tensioner systems are an example of a riser tensioning mechanism used to support risers.
- a plurality of active hydraulic cylinders with pneumatic accumulators is connected between the platform and the riser to provide and maintain the necessary riser tension.
- Platform responses to environmental conditions that cause changes in riser length relative to the platform are compensated by the tensioning cylinders adjusting for the movement.
- FIG. 1 shows an off-shore drilling or production system in accordance with various embodiments
- FIG. 2 shows views of different sections of the riser system of FIG. 1 ;
- FIG. 3 shows a first example connector in accordance with various embodiments.
- FIG. 4 shows another example connector in accordance with various embodiments.
- the terms “including” and “comprising” are used in an open-ended fashion, and thus should be interpreted to mean “including, but not limited to... .”
- the term “couple” or “couples” is intended to mean either an indirect or direct connection. Thus, if a first device couples to a second device, that connection may be through a direct connection, or through an indirect connection via other devices, components, and connections.
- the terms “axial” and “axially” generally mean along or parallel to a central axis (e.g., central axis of a body or a port), while the terms “radial” and “radially” generally mean perpendicular to the central axis.
- an axial distance refers to a distance measured along or parallel to the central axis
- a radial distance means a distance measured perpendicular to the central axis.
- FIG. 1 a schematic view of an offshore system 10 is shown.
- the system 10 is an offshore production system and includes a riser 14 between a floating platform or vessel 16 and a subsea wellhead 12 on the sea floor 13.
- the riser is designed as a production riser.
- the offshore system 10 and the riser 14 may also be designed and configured for drilling operations in accordance with different
- mooring lines or tendons 15 may be provided to attach the floating platform 16 to the sea floor.
- the riser 14 connects with the platform 16 (in this example, a SPAR-type platform).
- the platform 16 in this example, a SPAR-type platform.
- Other types of floating structures 16 that can be used with the invention include floating production storage and offloading (FPSO) systems, semi-submersible platforms, tension leg platforms (TLPs), and others known to those of ordinary skill in the art.
- FPSO floating production storage and offloading
- TLPs tension leg platforms
- the connection between the subsea wellhead 12 and the platform 16 provided by the riser 14 allows fluid communication there between.
- FIG. 2 the riser 14 is shown broken up to be able to include detail on specific sections but it should be appreciated that the riser 14 maintains fluid integrity from the subsea wellhead 12 to the production equipment on the platform 16.
- the platform 16 includes a mezzanine deck 20, the tensioner deck 22, and a production deck 24 located above the sea level 21.
- the riser 14 includes a tension joint 34 and a transition joint 36.
- the riser 14 is attached at its lower end to the subsea wellhead 12 using an appropriate connection.
- the riser 14 may include a wellhead connector 40 with an integral stress joint as shown.
- the wellhead connector 40 may be a tie back connector.
- the stress joint may be separate from the wellhead connector 40.
- the riser 14 may or may not include other specific riser joints, such as riser joints 42 with strakes or fairings and splash zone joints 44.
- the upper end of the riser 14 terminates in a surface wellhead and production tree 50 on the mezzanine deck 20.
- a riser tension system 60 is attached to the riser 14 at the tension joint 34 by using a tensioner ring 62 on the riser 14.
- the riser tension system 60 is supported on the tensioner deck 22 and dynamically tensions the riser 14. This allows the tension system 60 to adjust for the movement of the platform 16 while maintaining at least a portion of the riser 14 under tension.
- the riser tension system 60 may be any appropriate system, such as a hydro-pneumatic tensioner system with tensioning cylinders 64 as shown. The number of tensioning cylinders used may vary depending on the design of the system 10.
- the tension system 60 is able to compensate for the motion of the platform 16, the tension system 60 is not designed to provide all of the required tension to the riser 14 to prevent buckling.
- the riser 14 includes compression connectors 80 that are designed to be strong enough such that at least a portion of the riser 14 is able to withstand a compressive load. The amount and location of the compression connectors will depend on the designed loads and configuration of the system 10 and the riser 14. It should be appreciated that the compression connectors 80 need not be used on the entire length of the riser 14. Instead, the riser 14 need only include at least one compression connector 80 such that a portion of the riser 14 may withstand being placed in compression.
- the tension system 60 does not need to provide the full tensioning requirements that the riser 14 would otherwise need to prevent buckling.
- the full load needed to support the riser 14 does not need to be transferred to the platform 16 and the platform 16 may be used to support a riser 14 heavier than it would otherwise be able to.
- FIG. 3 shows an example of a compression connector.
- the compression connector 80a is a pin and box connector including a pin 82 and a box 84.
- the compression connector 80a may designed to be even stronger than the riser section itself.
- FIG. 4 shows another example of a compression connector.
- the compression connector 80b is a flange connector, which is typically designed to be stronger than other types of connectors.
- the flange connector 80b includes a body with a flange 88 and a neck 86 for each riser section end.
- the riser section end connects to the neck 86 either through welding, shrink- fit, or some other suitable connection method. Once attached, the riser sections are connected by tightening bolts that run through the adjacent flanges of the connector 80b.
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (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)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1415147.6A GB2518056B (en) | 2012-03-05 | 2013-03-05 | Offshore system with subsea riser |
SG11201405313XA SG11201405313XA (en) | 2012-03-05 | 2013-03-05 | Offshore system with subsea riser |
NO20141060A NO20141060A1 (en) | 2012-03-05 | 2014-09-02 | Offshore system with underwater riser |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201261606834P | 2012-03-05 | 2012-03-05 | |
US61/606,834 | 2012-03-05 | ||
US13/785,142 US20130230358A1 (en) | 2012-03-05 | 2013-03-05 | Offshore System with Subsea Riser |
US13/785,142 | 2013-03-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013134265A1 true WO2013134265A1 (en) | 2013-09-12 |
Family
ID=49042922
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2013/029127 WO2013134265A1 (en) | 2012-03-05 | 2013-03-05 | Offshore system with subsea riser |
Country Status (5)
Country | Link |
---|---|
US (2) | US20130230358A1 (en) |
GB (1) | GB2518056B (en) |
NO (1) | NO20141060A1 (en) |
SG (2) | SG11201405313XA (en) |
WO (1) | WO2013134265A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9133670B2 (en) | 2012-07-26 | 2015-09-15 | Cameron International Corporation | System for conveying fluid from an offshore well |
US10081986B2 (en) | 2016-01-07 | 2018-09-25 | Ensco International Incorporated | Subsea casing tieback |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5615977A (en) * | 1993-09-07 | 1997-04-01 | Continental Emsco Company | Flexible/rigid riser system |
US6273193B1 (en) * | 1997-12-16 | 2001-08-14 | Transocean Sedco Forex, Inc. | Dynamically positioned, concentric riser, drilling method and apparatus |
US6691784B1 (en) * | 1999-08-31 | 2004-02-17 | Kvaerner Oil & Gas A.S. | Riser tensioning system |
US7063158B2 (en) * | 2003-06-16 | 2006-06-20 | Deepwater Technologies, Inc. | Bottom tensioned offshore oil well production riser |
WO2011104629A1 (en) * | 2010-02-23 | 2011-09-01 | IFP Energies Nouvelles | Riser section connector with flanges and external locking ring |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US63158A (en) * | 1867-03-26 | Edwin holmes | ||
US1756597A (en) * | 1928-08-30 | 1930-04-29 | James M Thomas | Oil-well casing head |
FR2199053B1 (en) * | 1972-09-13 | 1975-06-13 | Coflexip | |
US3897045A (en) * | 1973-09-12 | 1975-07-29 | Vetco Offshore Ind Inc | Riser pipe and guide line tensioning apparatus |
US4330140A (en) * | 1977-04-01 | 1982-05-18 | Smith International, Inc. | Marine riser connector |
US4167279A (en) * | 1978-09-18 | 1979-09-11 | Standard Oil Company (Indiana) | Vertically moored platform deck casinghead |
US4379657A (en) * | 1980-06-19 | 1983-04-12 | Conoco Inc. | Riser tensioner |
CA1224715A (en) * | 1983-02-18 | 1987-07-28 | Peter R. Gibb | Apparatus and method for connecting subsea production equipment to a floating facility |
GB8400332D0 (en) * | 1984-01-06 | 1984-02-08 | Vo Offshore Ltd | System for connecting two members together |
US4708513A (en) * | 1985-09-06 | 1987-11-24 | Hydril Company | Fatigue resistant coupling for tubular members |
US4740109A (en) * | 1985-09-24 | 1988-04-26 | Horton Edward E | Multiple tendon compliant tower construction |
US4808035A (en) * | 1987-05-13 | 1989-02-28 | Exxon Production Research Company | Pneumatic riser tensioner |
US5310007A (en) * | 1993-04-09 | 1994-05-10 | Paul Munore Engineering International | Tensioning ring and riser assembly for an oil well platform tensioning apparatus |
US5775845A (en) * | 1996-01-18 | 1998-07-07 | Sea Engineering Associates, Inc. | Passive riser tensioner |
GB9710440D0 (en) * | 1997-05-22 | 1997-07-16 | Apex Tubulars Ltd | Improved marine riser |
US6554072B1 (en) * | 2000-06-15 | 2003-04-29 | Control Flow Inc. | Co-linear tensioner and methods for assembling production and drilling risers using same |
US7976247B1 (en) * | 2009-11-04 | 2011-07-12 | Atp Oil & Gas Corporation | Dual pressure cylinder |
-
2013
- 2013-03-05 SG SG11201405313XA patent/SG11201405313XA/en unknown
- 2013-03-05 US US13/785,142 patent/US20130230358A1/en not_active Abandoned
- 2013-03-05 GB GB1415147.6A patent/GB2518056B/en not_active Expired - Fee Related
- 2013-03-05 WO PCT/US2013/029127 patent/WO2013134265A1/en active Application Filing
- 2013-03-05 SG SG10201506337VA patent/SG10201506337VA/en unknown
-
2014
- 2014-09-02 NO NO20141060A patent/NO20141060A1/en not_active Application Discontinuation
-
2015
- 2015-07-30 US US14/813,864 patent/US20150337514A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5615977A (en) * | 1993-09-07 | 1997-04-01 | Continental Emsco Company | Flexible/rigid riser system |
US6273193B1 (en) * | 1997-12-16 | 2001-08-14 | Transocean Sedco Forex, Inc. | Dynamically positioned, concentric riser, drilling method and apparatus |
US6691784B1 (en) * | 1999-08-31 | 2004-02-17 | Kvaerner Oil & Gas A.S. | Riser tensioning system |
US7063158B2 (en) * | 2003-06-16 | 2006-06-20 | Deepwater Technologies, Inc. | Bottom tensioned offshore oil well production riser |
WO2011104629A1 (en) * | 2010-02-23 | 2011-09-01 | IFP Energies Nouvelles | Riser section connector with flanges and external locking ring |
Also Published As
Publication number | Publication date |
---|---|
SG10201506337VA (en) | 2015-09-29 |
US20150337514A1 (en) | 2015-11-26 |
NO20141060A1 (en) | 2014-09-22 |
US20130230358A1 (en) | 2013-09-05 |
GB2518056B (en) | 2015-11-25 |
SG11201405313XA (en) | 2014-09-26 |
GB201415147D0 (en) | 2014-10-08 |
GB2518056A (en) | 2015-03-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8021081B2 (en) | Pull-style tensioner system for a top-tensioned riser | |
CN105283380B (en) | Riser tensioners conductor for dry tree semi-submersible | |
US6062769A (en) | Enhanced steel catenary riser system | |
US8083439B2 (en) | Riser support system for use with an offshore platform | |
US6884003B2 (en) | Multi-cellular floating platform with central riser buoy | |
US10151167B2 (en) | Wellhead system with gasket seal | |
CN104641067B (en) | Top-tensioned riser systems | |
US8657536B2 (en) | Tensioning a riser | |
EP1540127B1 (en) | Offshore platform with vertically-restrained buoy and well deck | |
US20040182297A1 (en) | Riser pipe support system and method | |
US20150337514A1 (en) | Offshore System with Subsea Riser | |
NO20161931A1 (en) | Marine riser tensioner with load transferring centralization | |
US20160024861A1 (en) | Offshore Well Drilling System With Nested Drilling Risers |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13758616 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 1415147 Country of ref document: GB Kind code of ref document: A Free format text: PCT FILING DATE = 20130305 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1415147.6 Country of ref document: GB |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112014021705 Country of ref document: BR |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 13758616 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 112014021705 Country of ref document: BR Kind code of ref document: A2 Effective date: 20140902 |