ANCLAJE SEPLA
-
Upload
cesar-augusto-valencia -
Category
Documents
-
view
231 -
download
0
Transcript of ANCLAJE SEPLA
-
8/6/2019 ANCLAJE SEPLA
1/18
TECHNOLOGY OFECHNOLOGY OFSEPLA ANCHORSEPLA ANCHORS
Gengshen LiuGengshen Liu(October 27, 2004)(October 27, 2004)
-
8/6/2019 ANCLAJE SEPLA
2/18
-
8/6/2019 ANCLAJE SEPLA
3/18
SEPLA ANCHORSSEPLA ANCHORS
Sketch of the Mooring Line Configuration
-
8/6/2019 ANCLAJE SEPLA
4/18
SEPLA ANCHORSSEPLA ANCHORS
Installationof SEPLA
-
8/6/2019 ANCLAJE SEPLA
5/18
SEPLA ANCHORSSEPLA ANCHORS
SEPLAANCHOR,CONNECTORand
FOLLOWER
-
8/6/2019 ANCLAJE SEPLA
6/18
SEPLA TIMELINESEPLA TIMELINE
19971997 -- Patent Application FiledPatent Application Filed
19981998 -- Follower Design Developed, Model and FieldFollower Design Developed, Model and FieldTests, First Commercial SEPLA Installed (forTests, First Commercial SEPLA Installed (forSupply Boat Mooring)Supply Boat Mooring) (400 ft WD),(400 ft WD),Polyester/SEPLA JIP for Ocean AmericaPolyester/SEPLA JIP for Ocean America
(4,400 ft WD)(4,400 ft WD)
19991999 -- Polyester/SEPLA JIP for Ocean VictoryPolyester/SEPLA JIP for Ocean Victory
(4,500 ft WD), U.S. Patent Granted(4,500 ft WD), U.S. Patent Granted
20002000 -- 2 SEPLA Taut Legs installed for Homer2 SEPLA Taut Legs installed for HomerFerringtonFerrington (4,600 ft WD)(4,600 ft WD)
20012001 -- 1/5th scale land test program, installed 81/5th scale land test program, installed 8SEPLAs for Ocean Confidence (6,400 ft WD), 4SEPLAs for Ocean Confidence (6,400 ft WD), 4
SEPLAs for Deepwater Horizon (2,200 ft WD)SEPLAs for Deepwater Horizon (2,200 ft WD) 20032003 Delivered and Installed 19 SEPLAs to EssoDelivered and Installed 19 SEPLAs to Esso
Angola for Kizomba A and XikombaAngola for Kizomba A and XikombaDevelopment Drilling ProgramDevelopment Drilling Program
20042004 Continue Testing in SEPLA JIP*, Esso OrderedContinue Testing in SEPLA JIP*, Esso Ordered3 Additional SEPLAs for Kizomba B, Murphy3 Additional SEPLAs for Kizomba B, MurphyAccepts SEPLA as a Permanent MooringAccepts SEPLA as a Permanent MooringAnchor forAnchor forKikehKikeh ProposalProposal
* JIP investigate long-term behavior of plate anchors
-
8/6/2019 ANCLAJE SEPLA
7/18
SEPLA INSTALLATION SEQUENCESEPLA INSTALLATION SEQUENCE
1 3
2 4
-
8/6/2019 ANCLAJE SEPLA
8/18
SEPLA INSTALLATION SEQUENCESEPLA INSTALLATION SEQUENCE
Lowering Down the SPELA with
the Follower
Retrieve the Follower
-
8/6/2019 ANCLAJE SEPLA
9/18
SEPLA INSTALLATIONSEPLA INSTALLATION
-
8/6/2019 ANCLAJE SEPLA
10/18
CONNECTOR STABCONNECTOR STAB--ININ
-
8/6/2019 ANCLAJE SEPLA
11/18
SEPLA ANCHORSSEPLA ANCHORS
Subsea mating
CLIP20
MOV39
Inspection fly-by
SEPLA Subsea ConnectorSEPLA Subsea Connector
-
8/6/2019 ANCLAJE SEPLA
12/18
BALLGRAB ANCHOR CONNECTORSBALLGRAB ANCHOR CONNECTORS
Utilizes Ball and TaperUtilizes Ball and TaperTechnologyTechnology
Top Entry ConnectorTop Entry Connector
Engages with No ROVEngages with No ROV
Intervention (Viewing Only)Intervention (Viewing Only) Not Adversely Impacted By HeaveNot Adversely Impacted By Heave
Allows OneAllows One--Vessel InstallationVessel Installation
Allows Installing Anchors inAllows Installing Anchors in
Advance of Mooring LineAdvance of Mooring Line
Allows Leaving Anchor BehindAllows Leaving Anchor Behindfor Later Usefor Later Use
Allows Changing Out MooringAllows Changing Out MooringLine While Leaving Anchor IntactLine While Leaving Anchor Intact
-
8/6/2019 ANCLAJE SEPLA
13/18
SEPLA RETRIEVESEPLA RETRIEVE
-
8/6/2019 ANCLAJE SEPLA
14/18
LOADING SEPLA WITH ALOADING SEPLA WITH A--FRAMEFRAME
-
8/6/2019 ANCLAJE SEPLA
15/18
ADVANTAGESDVANTAGESoffSEPLA ANCHOREPLA ANCHOR
-
8/6/2019 ANCLAJE SEPLA
16/18
ADVANTAGES OFFERED BY SEPLAADVANTAGES OFFERED BY SEPLA
GeotechnicallyGeotechnically more efficient thanmore efficient than SEAsSEAs Significantly less costly thanSignificantly less costly than SEAsSEAs (1/2 to 1/3 the cost of a(1/2 to 1/3 the cost of a
comparable SEA)comparable SEA)
System designed to be recoverableSystem designed to be recoverable Nothing mechanical left subsea (Nothing mechanical left subsea (ieie valves)valves)
Multiple SEPLAs might be carried on an installation vessel dueMultiple SEPLAs might be carried on an installation vessel due
to their smaller sizeto their smaller size Desired geographical position and depth penetration can beDesired geographical position and depth penetration can be
readily achieved (compared to drag VLAs)readily achieved (compared to drag VLAs)
Design can be extrapolated to high capacity types in very deepDesign can be extrapolated to high capacity types in very deepwater in a practical fashionwater in a practical fashion
-
8/6/2019 ANCLAJE SEPLA
17/18
SEPLA COST SAVINGSSEPLA COST SAVINGS
Esso Angola Claims a Savings of $4.5 MillionEsso Angola Claims a Savings of $4.5 Millionfor Using SEPLAs over Suction Anchors forfor Using SEPLAs over Suction Anchors forKizomba A / Xikomba Drilling Program (18+1Kizomba A / Xikomba Drilling Program (18+1
Anchors)Anchors) Recent Proposal for GOM DevelopmentRecent Proposal for GOM Development
Drilling ProgramDrilling Program
SEPLA Anchor System Saves 60% over theSEPLA Anchor System Saves 60% over theSuction Anchor System (for 8 Legs SavesSuction Anchor System (for 8 Legs Saves~$1 million)~$1 million)
SEPLA Anchor System Installation is 2SEPLA Anchor System Installation is 2--33Days Shorter than Suction Anchor SystemDays Shorter than Suction Anchor SystemInstallationInstallation
-
8/6/2019 ANCLAJE SEPLA
18/18
SEPLA vs Suction Anchor Size ComparisonSEPLA vs Suction Anchor Size Comparison
MODU ExampleMODU Example
Suction AnchorSuction Anchor
9.5 ft dia x 70 ft9.5 ft dia x 70 ft
Weight 68 tonsWeight 68 tons
SEPLASEPLA
8 ft x 20 ft8 ft x 20 ft
Weight 24 tons (solid fluke)Weight 24 tons (solid fluke)
Red Hawk ExampleRed Hawk Example Suction AnchorSuction Anchor
18 ft dia x 78 ft18 ft dia x 78 ft
Weight 180 tonsWeight 180 tons
SEPLASEPLA 15 ft x 30 ft15 ft x 30 ft
Weight 50 tons (solid fluke),Weight 50 tons (solid fluke),37 tons (hollow fluke)37 tons (hollow fluke)