Home | Contact ST  

Follow ST

Marine Renewables

2017:  JAN | MARCH | MAY | JULY | SEPT | NOV | DEC
2016:  JAN | MARCH | MAY | JULY | SEPT | NOV

July 2016 Issue

Wind Can Power
Offshore Oil, Gas Ops

The DNV GL-led WIN WIN 1 joint industry project (JIP) shows that, for suitable fields, wind-powered water injection is technically feasible, capable of meeting performance targets, and offers a cost-competitive alternative to conventional water injection solutions.

For the past year, participants from both the renewable and oil and gas industries have worked together in the JIP to develop the concept of using floating wind turbines to power a water injection system in detail and assess its technical and commercial feasibility.

The JIP partners include ExxonMobil, ENI Norge, Nexen Petroleum UK Ltd., Statoil, VNG Norge, PG Flow Solutions and ORE Catapult.

No major challenges were identified through the JIP’s study. Analyses of system performance examining site-specific cases from JIP partners have shown that WIN WIN is able to meet key performance requirements such as injection volume targets, as well as reliability and minimized downtime.

“For the first time we can now see renewable energy as a large-scale source of power to offshore oil and gas operations,” said Remi Eriksen, group president and CEO of DNV.

The costs for wind-powered water injection have been compared with a conventional alternative where water is injected via a flow line from the host platform. While the WIN WIN technology has higher operational expenditures compared to a conventional alternative, the significantly lower capex means that it compares favorably over the long term. WIN WIN is therefore a commercially competitive alternative, particularly when host platform capacity is limited or injection wells are located far away.

Study to Inform
WEC Designs

Wave Energy Scotland (WES) has initiated a new project with the European Marine Energy Centre (EMEC) to capture the wealth of knowledge and experience amassed in Orkney through testing wave energy devices in real sea conditions. Results from the study will support and inform the wave energy convertor (WEC) designs currently under development.

Taking the requirements of open-water testing into consideration at an early stage of the design process will improve WEC readiness for deployment in real sea conditions.

A set of guidance documents will be produced, focusing on real-sea experience in compliance, handling, installation and operations and maintenance of devices, drawing on the expertise and knowledge within Orkney’s well-established marine renewables supply chain. The findings will also make it easier and quicker for developers to identify the services available to support their projects.

Task Force on California
Offshore Renewables

The Bureau of Ocean Energy Management (BOEM) will initiate planning with the state of California to establish an Intergovernmental Renewable Energy Task Force to examine opportunities for offshore renewable energy development along the Golden State.

The task force will facilitate coordination and communication in a partnership between BOEM and state, local and tribal governments and federal agencies concerning potential renewable energy leasing for research activities and commercial development on federal submerged lands on the Outer Continental Shelf (OCS), offshore California. According to the National Renewable Energy Laboratory, areas of the west coast of the U.S. and Hawaii have the potential to generate over 1.5 terawatts of offshore wind energy.

Winches for NEMOS
Wave Power Project

MacGregor, part of Cargotec, has won an order to supply highly specialized winches for a pilot project using an innovative system that generates electricity from waves. The system, NEMOS, is ideally suited to work in combination with offshore wind farms, where it can share electrical infrastructure, which lowers the levelized cost of energy. NEMOS will smooth fluctuations in power generation, therefore supporting greater commercial viability of renewable energy capture.

NEMOS employs specially shaped floating structures that move in a controlled trajectory to capture up to 80 percent of available wave energy, compared to 50 percent achieved by conventional rise and fall systems. Their associated generators and mooring winches can be located on any suitable offshore structure, such as a wind turbine, where they will be protected from seawater and offer easy access for maintenance.

The first commercial NEMOS pilot project will be located in the North Sea and should be fully operational in 2017.

Bibby Offshore Enters
Wind Cable Market

Bibby Offshore has moved into the offshore wind array cable installation market. The company has purchased a power cable lay carousel from Ecosse Subsea Systems (ESS), which will enable Bibby Offshore to lay power cables for offshore wind projects from its vessels.

Bibby Offshore and ESS have also formed a strategic alliance, with Bibby Offshore to provide commercial expertise supported by subsea project management and engineering experience, while ESS will provide innovation and in-depth sector competence through its trenching expertise. The companies will collaborate to develop other technologies and working methods.

Seaformatics Tests Power
Harvesting Systems

Seaformatics Systems, Inc. of St. John’s, Newfoundland, Canada, has completed an 18-month test and evaluation of four full-scale Power Harvesting Bottom Mount (PHBM) systems.

The test and evaluation program was co-sponsored by Husky Energy to learn more about the systems’ long-term durability and performance for possible application in future offshore operations.

All the units were deployed in Placentia Bay, off the Newfoundland coast, at about 20-m depth. The PHBMs realized an average current speed of 0.08 m/s and supplied continuous power to SonTek Argonaut-XR ADCPs. Two of the units were exposed to higher short-term peak currents of 0.4 m/s and harvested over 1 kWh, effectively doubling the life of the ADCPs’ batteries over the evaluation period.

2017:  JAN | MARCH | MAY | JULY | SEPT | NOV | DEC
2016:  JAN | MARCH | MAY | JULY | SEPT | NOV

-back to top-

Sea Technology is read worldwide in more than 110 countries by management, engineers, scientists and technical personnel working in industry, government and educational research institutions. Readers are involved with oceanographic research, fisheries management, offshore oil and gas exploration and production, undersea defense including antisubmarine warfare, ocean mining and commercial diving.