GB2604832A - Systems and methods for tethering a subsea structure - Google Patents
Systems and methods for tethering a subsea structure Download PDFInfo
- Publication number
- GB2604832A GB2604832A GB2208337.2A GB202208337A GB2604832A GB 2604832 A GB2604832 A GB 2604832A GB 202208337 A GB202208337 A GB 202208337A GB 2604832 A GB2604832 A GB 2604832A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tension member
- flexible tension
- anchor
- seafloor
- subsea
- 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
- 241001317177 Glossostigma diandrum Species 0.000 claims abstract 17
- 230000036316 preload Effects 0.000 claims 8
Classifications
-
- 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
- B63B21/24—Anchors
- B63B21/26—Anchors securing to bed
- B63B21/27—Anchors securing to bed by suction
-
- 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
-
- 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0007—Equipment or details not covered by groups E21B15/00 - E21B40/00 for underwater installations
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Combustion & Propulsion (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Earth Drilling (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Piles And Underground Anchors (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A system for tethering a subsea structure includes an anchor embedded in the sea bed, a mud mat disposed partially above the seafloor, a link attached to the anchor and to the mud mat, and a flexible tension member. One end of the flexible tension member is coupled to a tensioning system configured to pay in and pay out the flexible tension member. The tensioning system is mounted on one of the subsea structure or on the mud mat. The other end of the flexible tension member is coupled to the other of the subsea structure or on the mud mat. The anchor may optionally be buried below the seafloor.
Claims (13)
1. A system for tethering a subsea structure, the system comprising: an anchor embedded in the sea bed; a mud mat disposed partially above the seafloor; a link attached to a point of the anchor located below the seafloor and to the mud mat; a flexible tension member, wherein the flexible tension member extends horizontally and vertically from a first end to a second end to impart a lateral preload and a vertical preload to the subsea structure; and a tensioning system mounted on the mud mat, wherein the tensioning system is configured to pay in and pay out the flexible tension member, wherein the first end of the flexible tension member is coupled to the tensioning system, and wherein the second end of the flexible tension member is coupled to the subsea structure.
2. A system for tethering a subsea structure, the system comprising: an anchor embedded in sea bed; a mud mat disposed partially above the seafloor; a link attached to a point of the anchor located below the seafloor and to the mud mad; a flexible tension member, wherein the flexible tension member extends horizontally and vertically from a first end to a second end to impart a lateral preload and a vertical preload to the subsea structure; and a tensioning system mounted on the subsea structure, wherein the tensioning system is configured to pay in and pay out the flexible tension member, wherein the first end of the flexible tension member is coupled to the tensioning system, and wherein the second end of the flexible tension member is coupled to the mud mat.
3. The system of claims 1 or 2, wherein the anchor is buried below the seafloor.
4. The system of claims 3, wherein the anchor includes one of a torpedo anchor and suction embedded plate anchor (SEPLA).
5. The system of claims 1 or 2, wherein the anchor has an upper end disposed above the seafloor and a lower end disposed in the seabed below the seafloor.
6. The system of claim 5, wherein the anchor includes a suction pile.
7. The system of claims 1 or 2, wherein the subsea structure includes a subsea blow-out preventer (BOP).
8. The system of claims 1, further comprising another tensioning system mounted on the subsea structure, wherein the second end of the flexible tension member is coupled to the subsea structure by attaching the second end of flexible tension member to the other tensioning system.
9. The system of claims 2, further comprising another tensioning system mounted on the mud mat, wherein the second end of the flexible tension member is coupled to the mud mat by attaching the second end of flexible tension member to the other tensioning system.
10. A method for tethering a subsea blow-out preventer (BOP) coupled to a subsea wellhead, the method comprising: embedding an anchor to in the sea bed; disposing a mud mat partially above the seafloor; attaching a link to a point of the anchor located below the seafloor and to the mud mat; mounting a tensioning system on the mud mat; and applying tension to a flexible tension member to impart a lateral preload and a vertical preload to the subsea BOP, wherein the flexible tension member extends horizontally and vertically from a first end coupled to the tensioning system to a second end coupled to the subsea BOP, and wherein the tensioning system is configured to pay in and pay out the flexible tension member.
11. A method for tethering a subsea blow-out preventer (BOP) coupled to a subsea wellhead, the method comprising: embedding an anchor to in the sea bed; disposing a mud mat partially above the seafloor; attaching a link to a point of the anchor located below the seafloor and to the mud mat; mounting a tensioning system on the subsea BOP; and applying tension to a flexible tension member to impart a lateral preload and a vertical preload to the subsea BOP, wherein the flexible tension member extends horizontally and vertically from a first end coupled to the tensioning system to a second end coupled to the mud mat, and wherein the tensioning system is configured to pay in and pay out the flexible tension member.
12. The method of claims 10 or 11, wherein the anchor is buried below the seafloor.
13. The method of claims 10 or 11 , wherein the anchor has an upper end disposed above the seafloor and a lower end disposed in the seabed below the seafloor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201962931908P | 2019-11-07 | 2019-11-07 | |
| PCT/US2020/035735 WO2021091595A1 (en) | 2019-11-07 | 2020-06-02 | Systems and methods for tethering a subsea structure |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB202208337D0 GB202208337D0 (en) | 2022-07-20 |
| GB2604832A true GB2604832A (en) | 2022-09-14 |
| GB2604832B GB2604832B (en) | 2023-07-19 |
Family
ID=75848049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2208337.2A Active GB2604832B (en) | 2019-11-07 | 2020-06-02 | Systems and methods for tethering a subsea structure |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20220402577A1 (en) |
| AU (1) | AU2020380170A1 (en) |
| GB (1) | GB2604832B (en) |
| NO (1) | NO20220418A1 (en) |
| WO (1) | WO2021091595A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130327534A1 (en) * | 2012-06-12 | 2013-12-12 | Vetco Gray UK Limited | Light Well Intervention Umbilical and Flying Lead Management System and Related Methods |
| WO2014083056A1 (en) * | 2012-11-27 | 2014-06-05 | Aker Engineering & Technology As | An underwater connecting system |
| US20140374115A1 (en) * | 2013-06-24 | 2014-12-25 | Bp Corporation North America, Inc. | Systems and Methods for Tethering Subsea Blowout Preventers to Enhance the Strength and Fatigue Resistance of Subsea Wellheads and Primary Conductors |
| US20140374116A1 (en) * | 2013-06-24 | 2014-12-25 | Bp Corporation North America, Inc. | Systems and Methods for Tethering Subsea Wellheads to Enhance the Fatigue Resistance of Subsea Wellheads and Primary Conductors |
| WO2018144985A1 (en) * | 2017-02-03 | 2018-08-09 | Trendsetter Vulcan Offshore, Inc. | Systems and methods for tethering a subsea structure |
-
2020
- 2020-06-02 US US17/770,651 patent/US20220402577A1/en active Pending
- 2020-06-02 GB GB2208337.2A patent/GB2604832B/en active Active
- 2020-06-02 NO NO20220418A patent/NO20220418A1/en unknown
- 2020-06-02 AU AU2020380170A patent/AU2020380170A1/en active Pending
- 2020-06-02 WO PCT/US2020/035735 patent/WO2021091595A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130327534A1 (en) * | 2012-06-12 | 2013-12-12 | Vetco Gray UK Limited | Light Well Intervention Umbilical and Flying Lead Management System and Related Methods |
| WO2014083056A1 (en) * | 2012-11-27 | 2014-06-05 | Aker Engineering & Technology As | An underwater connecting system |
| US20140374115A1 (en) * | 2013-06-24 | 2014-12-25 | Bp Corporation North America, Inc. | Systems and Methods for Tethering Subsea Blowout Preventers to Enhance the Strength and Fatigue Resistance of Subsea Wellheads and Primary Conductors |
| US20140374116A1 (en) * | 2013-06-24 | 2014-12-25 | Bp Corporation North America, Inc. | Systems and Methods for Tethering Subsea Wellheads to Enhance the Fatigue Resistance of Subsea Wellheads and Primary Conductors |
| WO2018144985A1 (en) * | 2017-02-03 | 2018-08-09 | Trendsetter Vulcan Offshore, Inc. | Systems and methods for tethering a subsea structure |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2604832B (en) | 2023-07-19 |
| GB202208337D0 (en) | 2022-07-20 |
| AU2020380170A1 (en) | 2022-04-21 |
| NO20220418A1 (en) | 2022-04-06 |
| WO2021091595A1 (en) | 2021-05-14 |
| US20220402577A1 (en) | 2022-12-22 |
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