Iceberg management and impact on design of offshore structures

Eik, Kenneth; Gudmestad, Ove T.

doi:10.1016/j.coldregions.2010.04.008

Cited by 23 publications

(22 citation statements)

References 2 publications

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“…Andrew R. Mahoney et al [8] suggest that the differences in the timing of the annual landfast ice cycle are largely through analysis of over 2500 synthetic aperture radar (SAR) scenes spanning the period 1996-2008 in the Chukchi and Beaufort Seas. Kenneth Eik et al [9,10] present methodologies for both systematic evaluation of the need for the iceberg management system and structural reliability based on the experiences from the Canadian iceberg detection studies. By tracking of 9 icebergs and 10 ice floes in the Kanumas area of the Greenland Sea during 2012-2014, Renat Yulmetov et al [11] proposes an iceberg drift model including the rotation.…”

Section: Fig 1 Typical Sea Ice Detection Methods Used Throughout Thmentioning

confidence: 99%

Sea Ice Management for Oil and Gas Platforms in the Bohai Sea

Zhang

Wang

et al. 2017

Polish Maritime Research

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Bohai is a typical marginal oil field in an ice region, where most of the oil and gas platforms are economical. Sea ice is the main factor that affects the safety of oil and gas platforms in Bohai. Due to the complexity of the ice load and ice-induced vibrations, there are large security risks when developing Bohai oil and gas in the winter. It is difficult to ensure the safe production of oil and gas in winter using existing sea ice disaster warning technologies. Based on winter oil and gas production in the Bohai

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Section: Fig 1 Typical Sea Ice Detection Methods Used Throughout Thmentioning

confidence: 99%

Sea Ice Management for Oil and Gas Platforms in the Bohai Sea

Zhang

Wang

et al. 2017

Polish Maritime Research

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“…This fact should be acknowledged by the designers and those carrying out support work. Ice management (towing of icebergs) might be possible [Eik and Gudmestad, 2010], as has shown to be very successful on the Grand Banks. Figure 7.…”

Section: Figure 6 Limit For Collisions With Icebergs With a Probabilimentioning

confidence: 99%

“…Different ice class notations could apply, depending on the severity of potential ice conditions • It might, however, be advisable to implement some ice strengthening in the vessel design to allow for flexibility in contracting outside the main area for the design and the time foreseen for construction work, as specialist vessels might be very attractive in the winter season to carry out intervention and maintenance work. • Effective risk management techniques for offshore ice operations, including ice management aspects whenever required, [Eik and Gudmestad, 2010]. • Technical requirements and logistics for operating in remote areas.…”

Section: Construction Work In Cold Climate Regionsmentioning

confidence: 99%

Challenges Faced by the Marine Contractors Working in Western and Southern Barents Sea

Gudmestad

Karunakaran

2012

All Days

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The Western and South Western Barents Sea is the offshore area south of Bjørnøya and east towards the newly agreed delineation boundary between Norway and Russia while limited by the Norwegian mainland to the south.In this area, the Snøhvit gas field is in production and the Goliat oil field is being developed. Recently, encouraging oil finds (Skrugard and Havsul) have increased the interests in the geology and the oil and gas potential of the area. The older seismic (acquired more than 30 years ago) of the former disputed area between Russia and Norway shows potential for large hydrocarbon finds, although there would be a possibility that the hydrocarbons might have leaked out from the prospects. This paper summarizes the large challenges for the marine construction contractors working in these areas and discusses various phenomena that affect the marine operations at extreme cold climate conditions:• Long fetch length towards the west causes long periodic waves, necessitating vessels with good motion characteristics outside the range of a wide wave spectrum. Of particular importance is drilling rigs and drill ships that can work effectively in long periodic waves. • The normal wind and wave conditions during the summer construction season is as for the Norwegian Sea, however, during fall and winter, the weather can be extremely challenging. Of particular concern is the unpredictability of the weather caused by suddenly occurring polar lows, a phenomena caused by outburst of low air pressures from the ice edge to the north. The polar lows combined with low temperatures can cause vessel icing and loss of vessel stability for construction vessels with deck equipment having high centre of gravity. • Furthermore, long distances and weak infrastructure lead to logistics challenges as well as challenges related to evacuation and emergency response, in particular for activities outside the main construction season. It must also be noted that ice could be encountered early in the construction season, although very rarely, and that ice monitoring is important should activities start as early as March and April. The marine construction contractor will have to show patience when working in the area. Joint efforts, improved knowledge, top standard equipment and good understanding of the roles of the contractor and the oil company should, however, ensure successful project execution, also in this cold climate region.

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“…It can also contribute to creating hazardous safety situations for crew and potential failures of equipment units. Considering the 10,000-year return period for iceberg impact energy suggested by Norwegian Standard N-003 (NORSOK, 2007), Eik and Gudmestad (2010) estimated an impact energy of 85 MJ in Stockman region in southeastern Barents Sea. Designing a platform that can withstand such an amount of energy may not be practical and cost-effective.…”

Section: Effects Of Icebergs On Plant Ram Performancementioning

confidence: 99%

On RAM performance of production facilities operating under the Barents Sea harsh environmental conditions

Naseri

Barabady

2016

Int J Syst Assur Eng Manag

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Oil and gas (O&G) industry is expanding its activities into Arctic offshore, where is characterised with severe operating conditions and less-developed infrastructure. Such conditions affect the reliability, availability, and maintainability (RAM) of offshore O&G plants, operations, and activities through different scenarios. Plant RAM analysis provides key information for decision-making on, for instance, life-cycle cost management, inventory management, future investments, establishing maintenance policies, and safety-barrier management. Such decisions are of crucial value in Arctic offshore applications due to higher initial and operational costs. Therefore, a thorough evaluation and quantification of the effects of operating conditions on plant RAM performance play a significant role in such decisionmaking processes. In this regard, the aim of this paper is to broadly review and discuss different elements of offshore operating conditions specific to the Barents Sea, and further investigate various effects of such conditions on plant RAM. The present study can provide fundamental information to the academic and industrial sectors involved in the research and development of Arctic offshore O&G facilities and operations.

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Iceberg management and impact on design of offshore structures

Cited by 23 publications

References 2 publications

Sea Ice Management for Oil and Gas Platforms in the Bohai Sea

Sea Ice Management for Oil and Gas Platforms in the Bohai Sea

Challenges Faced by the Marine Contractors Working in Western and Southern Barents Sea

On RAM performance of production facilities operating under the Barents Sea harsh environmental conditions

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