Boskalis creates new horizons, executing an extensive range of dredging and marine projects in 90 countries and across six continents. With a wide range of skills in numerous specialities, our experts work around the world, always adhering to the strictest safety standards. View a selection of some of our most ground-breaking projects. Filter your selection based on the relevant market (Offshore Energy, Ports or Infrastructure) or activity (Offshore Energy, Dredging & Inland Infra or Salvage). Narrow your search further by time and location.

Project overview

Project

Wintershall RAVN and A6-A

Wintershall Noordzee B.V. installed a new remote platform RAVN as a crude production tie-back to A6-A. RAVN is a remote and unmanned crude well unit. Utilising a dry-tree design, all control, power and metered injection for the well will be via the 18.2-km control umbilical between the new satellite platform RAVN in the Danish sector and the operational platform A6-A in the German sector. The umbilical forms the entire link between the remote platform, supplying and controlling all functions and ensuring continual feedback and monitoring of RAVN. The umbilical supplies all the necessary input data, control and feedback to eliminate the usual day-to-day requirements of direct human contact. The umbilical was installed from RAVN first end to second end pull-in at A6-A end. Platforms are located in the Danish territorial waters in the North Sea (RAVN) and German territorial waters in the North Sea (A6-A). The umbilical was connected/pulled into RAVN via a J-tube and internal conductor to the RAVN topside -TUTA. RAVN - first end with pull-in to topside deck via a J-tube - was laid in corridor separate from the 8-inch pipeline between RAVN and A6-A and second end pull-in using the quadrant method at the A6-A platform. SCOPE OF WORK Prepare project planning for Boskalis’ scope of work. Survey work, including post-burial survey. Perform route engineering and installation engineering to optimize the performance of the installation scope, including Orcaflex analysis for laying, pull-ins, loads and dynamics, as well as a detailed burial assessment study (BAS). Prepare platform on RAVN and A6-A. Define umbilical length together with the client. Umbilical load-out at Hartlepool (UK) onto the installation vessel Ndurance. Installation and hang-off of umbilical termination heads – topsides. Crossing 36- & 40-inch live gas pipelines. Pull-in at RAVN & A6-A platforms – direct from vessel as part of SIM-OPS. Umbilical lay and bury scope – minimize on seabed exposure. Mobilize and demobilize all installation spreads for Boskalis’ scope. Provide engineering support during the offshore umbilical installation, including simultaneous burial. Provide QHSE management for Boskalis’ scope. Process and deliver as-built data. Mobilize and demobilize all installation spreads for Boskalis’ scope.

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Project

Wintershall L8-P4

Wintershall Noordzee B.V. installed a new remote platform at L6-B as a gas production tie-back to L8-P4. L6-B is a remote and unmanned gas well unit. Utilising a dry-tree design, all control, power and metered injection for the two wells will be via the 19.5-km control umbilical between the new satellite platform L6-B and the operational gas platform L8-P4. The umbilical forms the entire link between the remote platforms, supplying and controlling all functions and ensuring continual feedback and monitoring of L6-B. The umbilical supplies all the necessary input data, control and feedback to eliminate the usual day-to-day requirement of direct human contact. The umbilical was installed from L8-P4 first end to second end pull-in at L6-B remote end. Both platforms are located in Dutch territorial waters in the North Sea. The umbilical was connected/pulled in to L6-B via a J-tube and internal conductor to the L6-B topside - TUTA. The umbilical will be installed from L8-P4 - first end with pull-in to topside deck via a J-tube, laid in corridor separate from the 8-inch pipeline between L8-P4 and L6-B. FACTS AND FIGURES Water depth 30-35 meters Challenging North sea conditions. Challenging soft seabed. Fast-track project, with a short lead-time between award and installation – Feb 2014, July/Aug installed. Stepped phase process of pull-in, laying and burial ops. Completed on time, with no incidents. Umbilical loaded quickly and safely. Umbilical length 19.5 km. Burial scope of single pass burial of umbilical minimum requirement of 1m TOC (top of cover). SCOPE OF WORK Prepare project planning for Boskalis’ scope of work. Survey work, including a pre-burial, as-laid and post-burial survey. Perform route engineering and installation engineering to optimize the performance of the installation scope, including a detailed burial assessment study (BAS). Prepare platform on L8-P4 and L6-B. Define umbilical length together with the client. Umbilical load-out at DUCO Newcastle (UK) onto the installation vessel Ndurance. Hang-off of umbilical end. Crossing 36-inch live gas pipeline Callantsoog. Pull-in at L6-B & L8-P4 platforms – direct from vessel as part of SIM-OPS. Mobilize and demobilize all installation spreads for Boskalis’ scope. Provide engineering support during the offshore umbilical installation, including burial. Provide QHSE management for Boskalis’ scope.

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Project

P67 FPSO Transportation

On behalf of Company Petrobras and Client COOEC, Boskalis executed the dry transportation of the P-67 FPSO in 2018 from the COOEC Qingdao yard in China to Rio de Janeiro in Brazil. The P-67 FPSO will produce 150,000 bpd and compress six million cubic meters of natural gas daily in the Lula North section of the Lula-Cernambi field in the Santos basin.The transportation of the 90,000-tonne box-shaped P-67 unit around the Cape of Good Hope poses various challenges to Petrobras which incentivized the dry-tow opera-tion method in order to ensure a seamless and safe delivery of the unit at loca-tion. The operation was executed with the Boskalis semi-submersible heavy lift vessel, Boka Vanguard and is the heaviest cargo ever to be transported by this method.

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Project

Johan Sverdrup, transport.

Samsung Heavy Industries Co., Ltd. is Equinor’s Fabrication and Transport contractor of the Johan Sverdrup project. Boskalis has been awarded by Samsung as transportation contractor for this project.Johan Sverdrup is an oil field located in the Norwegian sector of the North Sea. The field is located about 140 km West of Stavanger, Norway. The first phase of the development consists of 4 bridge-linked platforms on jackets. Boskalis has transported modules for the Riser Platform (RP) topside early 2018 and the Production Platform (P1) topside onboard of the Iron Lady barge end 2018, early 2019.

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Project

NORDSTREAM II

Allseas Engineering had been awarded with the contract to support partly with construction of the offshore natural gas transmission system comprising two 48” diameter pipelines from Russia to the Baltic through Germany (NPSP2). The installation of the NSP2 pipeline has been performed by Charterers pipelay vessels: Solitaire, Pioneering Spirit and Audacia.Boskalis was awarded by Allseas Engineeirng to perform anchor handling assistance and survey and ROV support during the pipelay work conducted by the PLV Audacia. The southern section of the two pipelines was installed by PLV Audacia without utilizing her DP system. This was a requirement from Charterers client and the vessel had therefore been fitted with 10 mooring spread to maintain position during the pipelay operation. The work was performed in German waters from Global KP point 1197 to 1159 – Country KP 17 – 55 in a water depth ranging from 17 to 25 m. This required anchor handlers above 150 Tonnes Bollard Pull which were capable of handling‚9 x 18mT Stevshark Rex anchors‚2 x 16mT Stevshark anchorsFurthermore Boskalis provided in-house survey and ROV equipment in order to‚Perform TDM (Touchdown monitoring) using a pole mounted MBES (multibeam echosounder)‚Perform TDM with the ROV‚Check and confirm anchor catenaries using either MBES or ROV when requested by PLV Audacia. For this scope the 205TBP AHTS Union Manta was outfitted with survey and ROV equipment. Also dedicated shore support in Mukran was provided to ensure an efficient operation. With all Boskalis’ projects safety is an essential part. The project was executed with a good safety performance of the marine crew and project management. The marine spread was manned to perform 24/7 anchor handling and survey duties. Also dedicated shore support in Mukran was provided to ensure a efficient operation. The marine spread exceeded CLIENT’s expectations while maintaining the highest safety and sustainability standards, Boskalis through combining various inhouse disciplines and due to its diverse and large fleet size was able to provide an all round solution as requested by our client.

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Project

DNO Oman block 8 LTD

DNO Oman Block 8 Ltd (DNO) is the operator of the Bukha Field, offshore Khasab, Oman. DNO entered Oman in 2012 and operates the country's only producing offshore fields on behalf of Omani Oil & Gas ministry. Boskalis Subsea Services (BSS) in recent years have assisted DNO with lifting a flare boom onto the WB Platform, making use of a DP2 offshore vessel, also Boskalis provided diving and inspection services to DNO for their SPM Offshore RAK, UAE.The project objective of this scope of work is to pull-in, lay, connect and commission a 1,200 m long 6” ID production flowline, together with a 111 mm OD hydraulic control umbilical between the Bukha Alpha (BA) Platform and the Bukha 1 (B1) Subsea Well. BSS was contracted to provide the procedures, Dive Support Vessel (DSV), Hyperbaric Rescue Vessel (HRV), project equipment and personnel to undertake this SOW. The contract was awarded in April 2017, and the installation of the newly manufactured 6” ID Flowline and 111mm OD umbilical between the B1 well and the BA platform took place during the month of August 2017.

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