CA2791152A1 - Tension leg platform with improved hydrodynamic performance - Google Patents
Tension leg platform with improved hydrodynamic performance Download PDFInfo
- Publication number
- CA2791152A1 CA2791152A1 CA2791152A CA2791152A CA2791152A1 CA 2791152 A1 CA2791152 A1 CA 2791152A1 CA 2791152 A CA2791152 A CA 2791152A CA 2791152 A CA2791152 A CA 2791152A CA 2791152 A1 CA2791152 A1 CA 2791152A1
- Authority
- CA
- Canada
- Prior art keywords
- columns
- tension leg
- leg platform
- pontoon structure
- vertical
- 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.)
- Abandoned
Links
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/52—Submerged foundations, i.e. submerged in open water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
- B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
- B63B1/107—Semi-submersibles; Small waterline area multiple hull vessels and the like, e.g. SWATH
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
- B63B21/502—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers by means of tension legs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B35/4413—Floating drilling platforms, e.g. carrying water-oil separating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
- B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
- B63B1/12—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly
- B63B2001/128—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly comprising underwater connectors between the hulls
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Earth Drilling (AREA)
- Bridges Or Land Bridges (AREA)
- Revetment (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
A tension leg platform that is stable with a quayside-integrated deck without the use of temporary stability modules or specialized installation techniques. The hull preferably consists of four radially-oriented vertical comer columns connected with four central ring pontoon segments. The vertical columns are fixed to the outer periphery of the central pontoon. The columns are characterized by a major radial axis and a minor transverse axis. The mooring system includes tendons supported at tendon porches directly at the four column outboard lower corners, without additional radially-extending tendon support structures.
Claims (20)
1. A tension leg platform (10) comprising:
a hull (11, 11a, 11b) including a plurality of vertical columns (12, 112), a pontoon structure (14, 114) disposed inboard of said columns and adjoined to said columns at lower ends (12a, 112a) thereof, each of said columns having a horizontal cross-sectional shape that defines a major axis (A1) that is oriented radially outward from a center point (C) of said hull;
a deck (13) supported at upper ends (12b, 112b) of said columns; and a plurality of tendons (17) connected under tension between said columns and the seabed for maintaining said tension leg platform above a desired subsea location and substantially restraining said tension leg platform from vertical heave motions.
a hull (11, 11a, 11b) including a plurality of vertical columns (12, 112), a pontoon structure (14, 114) disposed inboard of said columns and adjoined to said columns at lower ends (12a, 112a) thereof, each of said columns having a horizontal cross-sectional shape that defines a major axis (A1) that is oriented radially outward from a center point (C) of said hull;
a deck (13) supported at upper ends (12b, 112b) of said columns; and a plurality of tendons (17) connected under tension between said columns and the seabed for maintaining said tension leg platform above a desired subsea location and substantially restraining said tension leg platform from vertical heave motions.
2. The tension leg platform (10) according to claim 1 wherein:
said columns (12, 112) and said pontoon structure (14, 114) are constructed substantially of flat plate.
said columns (12, 112) and said pontoon structure (14, 114) are constructed substantially of flat plate.
3. The tension leg platform (10) according to claim 1 wherein:
each of said plurality of columns (12, 112) has a polygonal transverse cross-section.
each of said plurality of columns (12, 112) has a polygonal transverse cross-section.
4. The tension leg platform (10) according to claim 1 wherein:
each of said plurality of columns (12, 112) has a quadrilateral transverse cross-section.
each of said plurality of columns (12, 112) has a quadrilateral transverse cross-section.
5. The tension leg platform according to claim 4 wherein:
each of said plurality of columns (112) has a generally trapezoidal transverse cross-section defined by an inboard side wall (112d) and an outboard side wall (112e) interconnected in parallel spaced relation by two nonparallel laterally spaced side walls (112c), said outboard side wall (112e) being wider than said inboard side wall (112d), whereby said major axis (A1) extends between said inboard and outboard side walls.
each of said plurality of columns (112) has a generally trapezoidal transverse cross-section defined by an inboard side wall (112d) and an outboard side wall (112e) interconnected in parallel spaced relation by two nonparallel laterally spaced side walls (112c), said outboard side wall (112e) being wider than said inboard side wall (112d), whereby said major axis (A1) extends between said inboard and outboard side walls.
6. The tension leg platform (10) according to claim 4 wherein:
each of said plurality of columns (12) has a generally rectangular horizontal cross-section defined by an inboard side wall (12d) and an outboard side wall (12e) of substantially equal width interconnected in parallel spaced relation by two parallel laterally spaced side walls (12c) of greater width than said inboard and outboard side walls (12d, 12e), whereby said major axis (A1) extends between said inboard and outboard side walls.
each of said plurality of columns (12) has a generally rectangular horizontal cross-section defined by an inboard side wall (12d) and an outboard side wall (12e) of substantially equal width interconnected in parallel spaced relation by two parallel laterally spaced side walls (12c) of greater width than said inboard and outboard side walls (12d, 12e), whereby said major axis (A1) extends between said inboard and outboard side walls.
7. The tension leg platform (10) according to claim 1 wherein:
said pontoon structure (14, 114) is octagonal-shaped.
said pontoon structure (14, 114) is octagonal-shaped.
8. The tension leg platform (10) according to claim 7 wherein:
each of said columns (12, 112) is adjoined to a corner portion (14b, 114b) of said pontoon structure (14, 114) by an extension member (15).
each of said columns (12, 112) is adjoined to a corner portion (14b, 114b) of said pontoon structure (14, 114) by an extension member (15).
9. The tension leg platform (10) according to claim 1 wherein:
said pontoon structure (14) includes a central moonpool opening (14c) formed vertically therethrough.
said pontoon structure (14) includes a central moonpool opening (14c) formed vertically therethrough.
10. The tension leg platform (10) according to claim 9 wherein:
said pontoon structure (14) includes four orthogonally-oriented side segments (14a) interconnected with four diagonally-oriented corner segments (14b); and each of said side segments and corner segments (14a, 14b) are generally rectangular in transverse cross section and define horizontal axes (HC).
said pontoon structure (14) includes four orthogonally-oriented side segments (14a) interconnected with four diagonally-oriented corner segments (14b); and each of said side segments and corner segments (14a, 14b) are generally rectangular in transverse cross section and define horizontal axes (HC).
11. The tension leg platform (10) according to claim 9 wherein:
each of said columns (12, 112) is adjoined to one of said corner segments (14b) of said pontoon structure (14) by an extension member (15).
each of said columns (12, 112) is adjoined to one of said corner segments (14b) of said pontoon structure (14) by an extension member (15).
12. A tension leg platform (10) comprising:
a hull (11, 11a, 11b) including a pontoon structure (14, 114) having an outer periphery surrounding a central vertical axis (C), vertical columns (12, 112) each adjoined at a lower end (12a, 112a) to said pontoon structure outer periphery, said pontoon structure disposed inboard of said columns, each of said columns defining a vertical column axis (VC) located radially outward from said central vertical axis (C) a first non-zero distance (D1) from said outer periphery of said pontoon structure;
a deck (13) supported by upper ends (12b, 112b) of said columns; and tendons (17) under tension connected at upper ends to said columns by tendon porches (18) mounted directly to said columns (12, 112) and at lower ends to the seabed for maintaining said tension leg platform above a desired subsea location and substantially restraining said tension leg platform from vertical heave motions.
a hull (11, 11a, 11b) including a pontoon structure (14, 114) having an outer periphery surrounding a central vertical axis (C), vertical columns (12, 112) each adjoined at a lower end (12a, 112a) to said pontoon structure outer periphery, said pontoon structure disposed inboard of said columns, each of said columns defining a vertical column axis (VC) located radially outward from said central vertical axis (C) a first non-zero distance (D1) from said outer periphery of said pontoon structure;
a deck (13) supported by upper ends (12b, 112b) of said columns; and tendons (17) under tension connected at upper ends to said columns by tendon porches (18) mounted directly to said columns (12, 112) and at lower ends to the seabed for maintaining said tension leg platform above a desired subsea location and substantially restraining said tension leg platform from vertical heave motions.
13. The tension leg platform (10) according to claim 12 wherein:
each of said columns (12, 112) has a transverse cross-sectional shape with a horizontal major axis (A1) oriented radially outward from said central vertical axis (C).
each of said columns (12, 112) has a transverse cross-sectional shape with a horizontal major axis (A1) oriented radially outward from said central vertical axis (C).
14. The tension leg platform (10) according to claim 13 wherein:
said pontoon structure (14) includes a vertical central opening (14c) formed therethrough;
said pontoon structure (14) includes four orthogonally-oriented side segments (14a) intervaled with four diagonally-oriented corner segments (14b);
each of said side segments and corner segments (14a, 14b) have a polygonal vertical cross section and define horizontal longitudinal axes (HC) therethrough; and eachi vertical column axis (VC) of each column (12, 112) is located a second non-zero distance (D2) radially outward from the horizontal longitudinal axis (HC) of an adjacent corner segment (14b) of said pontoon structure (14).
said pontoon structure (14) includes a vertical central opening (14c) formed therethrough;
said pontoon structure (14) includes four orthogonally-oriented side segments (14a) intervaled with four diagonally-oriented corner segments (14b);
each of said side segments and corner segments (14a, 14b) have a polygonal vertical cross section and define horizontal longitudinal axes (HC) therethrough; and eachi vertical column axis (VC) of each column (12, 112) is located a second non-zero distance (D2) radially outward from the horizontal longitudinal axis (HC) of an adjacent corner segment (14b) of said pontoon structure (14).
15. The tension leg platform (10) according to claim 13 wherein:
each of said columns (12, 112) has a polygonal transverse cross section.
each of said columns (12, 112) has a polygonal transverse cross section.
16. The tension leg platform (10) according to claim 15 wherein:
each of said columns (112) has a generally trapezoidal transverse cross section formed of an inboard side wall (112d) and a outboard side wall (112e) that is narrower than said inboard side wall, which are interconnected in parallel spaced relation by two nonparallel laterally spaced side walls (112c).
each of said columns (112) has a generally trapezoidal transverse cross section formed of an inboard side wall (112d) and a outboard side wall (112e) that is narrower than said inboard side wall, which are interconnected in parallel spaced relation by two nonparallel laterally spaced side walls (112c).
17. The tension leg platform (10) according to claim 15 wherein:
each of said columns (12) has a generally rectangular transverse cross section formed of an inboard side wall (12d) and an outboard side wall (12e) of substantially equal width interconnected in parallel spaced relation by two parallel laterally spaced side walls (12c) of greater width than said inboard and outboard side walls.
each of said columns (12) has a generally rectangular transverse cross section formed of an inboard side wall (12d) and an outboard side wall (12e) of substantially equal width interconnected in parallel spaced relation by two parallel laterally spaced side walls (12c) of greater width than said inboard and outboard side walls.
18. The tension leg platform (10) according to claim 12 wherein:
an imaginary line (S) extending between the vertical column axes (VC) of two adjacent columns (12, 112) lies outboard of said pontoon structure outer periphery.
an imaginary line (S) extending between the vertical column axes (VC) of two adjacent columns (12, 112) lies outboard of said pontoon structure outer periphery.
19. The tension leg platform (10) according to claim 14 wherein:
an imaginary line (S) extending between the vertical column axes (VC) of two adjacent columns (12, 112) lies outboard of the horizontal longitudinal axis (HC) of the side segment (14a) located generally between said two adjacent columns.
an imaginary line (S) extending between the vertical column axes (VC) of two adjacent columns (12, 112) lies outboard of the horizontal longitudinal axis (HC) of the side segment (14a) located generally between said two adjacent columns.
20. A tension leg platform (10) comprising:
a ring pontoon structure (14) surrounding a central opening (14c) and formed by a plurality of segments (14a, 14b) which in transverse cross section define a horizontal center line (HC);
vertical columns (12, 112) each adjoined at a lower end (12a, 112a) to an outboard side of said pontoon structure (14) so that said pontoon structure is disposed inboard of said columns, each of said columns defining a central vertical longitudinal axis (VC) disposed radially outward from a platform center (C) a distance (D2) from said horizontal axial center line (HC) so as not to intersect therewith; and vertical mooring tendons (17) connected between said columns and the seabed.
a ring pontoon structure (14) surrounding a central opening (14c) and formed by a plurality of segments (14a, 14b) which in transverse cross section define a horizontal center line (HC);
vertical columns (12, 112) each adjoined at a lower end (12a, 112a) to an outboard side of said pontoon structure (14) so that said pontoon structure is disposed inboard of said columns, each of said columns defining a central vertical longitudinal axis (VC) disposed radially outward from a platform center (C) a distance (D2) from said horizontal axial center line (HC) so as not to intersect therewith; and vertical mooring tendons (17) connected between said columns and the seabed.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/712,543 | 2010-02-25 | ||
| US12/712,543 US20110206466A1 (en) | 2010-02-25 | 2010-02-25 | Tension Leg Platform With Improved Hydrodynamic Performance |
| PCT/US2011/025916 WO2011106418A1 (en) | 2010-02-25 | 2011-02-23 | Tension leg platform with improved hydrodynamic performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2791152A1 true CA2791152A1 (en) | 2011-09-01 |
Family
ID=44476612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2791152A Abandoned CA2791152A1 (en) | 2010-02-25 | 2011-02-23 | Tension leg platform with improved hydrodynamic performance |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US20110206466A1 (en) |
| EP (1) | EP2539224A1 (en) |
| JP (1) | JP2013521170A (en) |
| KR (1) | KR20120130239A (en) |
| CN (1) | CN102939238A (en) |
| AP (1) | AP2012006481A0 (en) |
| AU (1) | AU2011220815A1 (en) |
| BR (1) | BR112012021374A2 (en) |
| CA (1) | CA2791152A1 (en) |
| WO (1) | WO2011106418A1 (en) |
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| US6899049B2 (en) * | 2003-10-29 | 2005-05-31 | Donald H. Gehring | Apparatus and method of constructing offshore platforms |
| US7140317B2 (en) * | 2003-12-06 | 2006-11-28 | Cpsp Ltd. | Central pontoon semisubmersible floating platform |
| US7255517B2 (en) * | 2004-05-28 | 2007-08-14 | Deepwater Marine Technology L.L.C. | Ballasting offshore platform with buoy assistance |
| US7278801B2 (en) * | 2004-05-28 | 2007-10-09 | Deepwater Marine Technology L.L.C. | Method for deploying floating platform |
| US7462000B2 (en) * | 2006-02-28 | 2008-12-09 | Seahorse Equipment Corporation | Battered column tension leg platform |
-
2010
- 2010-02-25 US US12/712,543 patent/US20110206466A1/en not_active Abandoned
-
2011
- 2011-02-23 BR BR112012021374A patent/BR112012021374A2/en not_active IP Right Cessation
- 2011-02-23 CA CA2791152A patent/CA2791152A1/en not_active Abandoned
- 2011-02-23 AU AU2011220815A patent/AU2011220815A1/en not_active Abandoned
- 2011-02-23 JP JP2012555112A patent/JP2013521170A/en active Pending
- 2011-02-23 KR KR1020127025166A patent/KR20120130239A/en not_active Application Discontinuation
- 2011-02-23 AP AP2012006481A patent/AP2012006481A0/en unknown
- 2011-02-23 EP EP11747994A patent/EP2539224A1/en not_active Withdrawn
- 2011-02-23 CN CN2011800195697A patent/CN102939238A/en active Pending
- 2011-02-23 WO PCT/US2011/025916 patent/WO2011106418A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| BR112012021374A2 (en) | 2016-10-25 |
| KR20120130239A (en) | 2012-11-29 |
| WO2011106418A1 (en) | 2011-09-01 |
| JP2013521170A (en) | 2013-06-10 |
| AP2012006481A0 (en) | 2012-10-31 |
| CN102939238A (en) | 2013-02-20 |
| AU2011220815A1 (en) | 2012-09-20 |
| EP2539224A1 (en) | 2013-01-02 |
| US20110206466A1 (en) | 2011-08-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |
Effective date: 20150224 |