Initiation of pliant wave riser and flexible Products using platform pull in winch wire as...
PT 20151636
Key information
Title
Initiation of pliant wave riser and flexible Products using platform pull in winch wire as initiation method
Application number
20151636
Case type
National
Status
13.02.2018 P.g.a. manglende svar. Søker har ikke begjært gjenopptakelse
Filed
01.12.2015
Effective date
01.12.2015
Publicly available
02.06.2017
Applicant
Ocean Installer AS (NO)
Inventor
Håvard Strand (NO)
Abstract and drawing
Disclaimer: This text has been machine-scanned and may contain errors – please refer to "Publications" for legally binding content.
The patent application covers a new method whereby the platform pull-in wire is used to initiate the subsea end of the pliant wave riser in order to avoid the need for large clump weight or additional winch/pulling machine. The pull-in wire from the platform is used for the final pull-in of the topside end of the riser into the platform, however this method requires it to be used for both the subsea initiation as well as the normal topside pull-in method.
Publications
A1
Checking availability of the latest published version...
Documents
ExpandDownload files (23)
Date
Date
Doc. No.
Process
Case number
In/Out
Journal description
To/from
04.07.2018
12-01
Saksbehandling
20151636
UT
Endelig Henleggelse
Ocean Installer AS
02.03.2018
11-01
Saksbehandling
20151636
UT
Henlagt manglede svar
Ocean Installer AS
13.11.2017
10-02
Saksbehandling
20151636
UT
PT report 12:37:47
13.11.2017
10-01
Saksbehandling
20151636
UT
Realitet patent
Ocean Installer AS
02.11.2017
09-01
Saksbehandling
20151636
UT
PT Batch Varsel om betaling av første årsavgift (3317)
02.12.2016
07-02
Saksbehandling
20151636
INN
Krav
Ocean Installer AS
02.12.2016
07-01
Saksbehandling
20151636
INN
Korrespondanse (Hovedbrev inn)
Ocean Installer AS
01.12.2016
08-02
Saksbehandling
20151636
INN
Krav
Ocean Installer AS
01.12.2016
08-01
Saksbehandling
20151636
INN
Korrespondanse (Hovedbrev inn)
Ocean Installer AS
09.06.2016
06-02
Saksbehandling
20151636
UT
PT report 01:20:02
09.06.2016
06-01
Saksbehandling
20151636
UT
Realitet patent
Ocean Installer AS
08.12.2015
04-01
Saksbehandling
20151636
INN
Korrespondanse (Hovedbrev inn)
Ocean Installer AS
02.12.2015
03-01
Saksbehandling
20151636
UT
Generelt Brev Patent
Ocean Installer AS
02.12.2015
02-01
Saksbehandling
20151636
UT
Formalia 1
Ocean Installer AS
01.12.2015
05-03
Saksbehandling
20151636
INN
Beskrivelse, tegninger, oversettelse av krav, erklæring
Ocean Installer AS
01.12.2015
05-02
Saksbehandling
20151636
INN
Korrespondanse
Ocean Installer AS
01.12.2015
05-01
Saksbehandling
20151636
INN
Korrespondanse (Hovedbrev inn)0
Ocean Installer AS
01.12.2015
01-06
Saksbehandling
20151636
INN
Krav
01.12.2015
01-05
Saksbehandling
20151636
INN
Beskrivelse
01.12.2015
01-04
Saksbehandling
20151636
INN
Erklæring Søkers rett til oppfinnelse
01.12.2015
01-03
Saksbehandling
20151636
INN
tegninger
01.12.2015
01-02
Saksbehandling
20151636
INN
Krav engelsk
01.12.2015
01-01
Saksbehandling
20151636
INN
Søknadsskjema Patent
Description, claims and drawings
Disclaimer: This text has been machine-scanned and may contain errors – please refer to "Publications" for legally binding content.Description
PATENT - Initiation of pliant wave risers and flexible products using platform pull in winch wire as initiation methodPliant wave risers typically have the subsea end of the riser and the static section laying on the seabed underneath the vicinity of the topside/platform. These can be challenging to install as it requires a method of taking the subsea end of the riser from the construction/installation vessel and pulling it towards the seabed underneath the platform. As the platform lies over the top of the area that the static section is being pulled to it makes it difficult for the construction/installation vessel to lowerthe riser into place. Typically a large clump weight (dead mans anchor) is used with either a subsea winch or a sheave connected to a wire from a winch on the platform and this is then used to connect to the subsea end from the vessel and pull the subsea end into position. This typically requires heavy equipment installed on the seabed and there is additional winches required on the platform or subsea which can increase the risk for possible breakdown or damage.CLAIM: This patent application covers a new method whereby the platform pull-in wire is used to initiate the subsea end of the pliant wave riser in order to avoid the need for large clump weight or additional winch/pulling machine. The pull in wire from the platform is used for the final pull-in of the topside end of the riser into the platform, however this method requires it to be used for both the subsea initiation as well the normal topside pull-in method.• The subsea end of the riser is deployed from the construction/installation vessel (typically from the moonpool but can also be over the side/end of the vessel). This is shown in Figure 1. • The platform pull-in winch wire is also lowered from the platform. This is shown in Figure 1. • A subsea connection is then made between the platform pull in winch wire rigging and the subsea end of riser. This is shown in Figure 1.
• The pull in winch wire from the platform and riser on the vessel are paid in/out either simultaneously or in steps or in a combination to allow the subsea end of the riser to be brought doser to the platform and then the "sag bend" catenary or "belly" that is positioned in the correct position to allow it to be landed down on the seabed in correct• The landing of the riser "sag bend" or "belly" can be accurately landed by alternately paying in/out of the platform pull-in winch wire, paying in/out of the riser from the vessel, moving the platform or vessel, or a combination of all operations. This is shown• To ensure accurate landing of the riser, a "belly" clump weight connection can be made between the riser and a pre-installed clump weight or other fixing device or structure on the seabed. This allows the riser to be accurately positioned and fixed to prevent risk of• Once the construction/installation vessel is in position, the platform is then moved in a coordinated pattern (typically using the mooring/winch system) and the platform/topside winch wire is lowered (either simultaneously, in steps, or a combination) to enable the subsea end to be lowered towards the seabed and disconnected. This allows the riser static section towards the subsea end being able to be laid by the platform in a certain configuration based on moving the platform and winch accordingly to lay the riser on the seabed avoiding obstacles and other items on the seabed. This is shown in Figure 4.
ClaimsDrawings
Priority
No priority
Patent classes
IPC classesE21B 17/01CPC classesE21B 17/015
Citations
WO 2015/074687 A1 (A1)WO 2011/099869 A2 (A2)US 4588326 A (A)