{"title":"Fast Ice Drilling System – FIDS – An Improved System for Shallow Water Arctic Drilling","authors":"R. Shafer, P. Noble, Alex Iyerusalimskiy","doi":"10.5957/icetech-2010-104","DOIUrl":"https://doi.org/10.5957/icetech-2010-104","url":null,"abstract":"The Fast Ice Drilling System (FIDS) is a concept to extend the season for Ice Island drilling and to move it into deeper water as an alternative to bottom supported drilling units, such as the Steel Drilling Caisson (SDC). As currently conceived, the FIDS can support drilling of up to four wells during the course of one winter season.\u0000 The FID System is designed to overcome one of the limitations of current ice island drilling, i.e. the requirement for shore access via an ice road. Building of ice roads can delay season start and shore leads and over-flooding in the spring can make the ice road unusable while the ice island platform is still stable and intact. The FID System is based on using marine logistics and supply which obviates (or minimizes) the need for shore access via ice roads.\u0000 The FIDS concept uses a marine vessel(s) for early construction of spray ice islands and provides support for construction of ice roads and additional man-made ice islands.\u0000 The use of logistics vessel(s) within the FIDS concept to position construction and drilling equipment, camps, fuel and other supplies in the vicinity of the target well locations improves overall efficiency and allows for an extended drilling season. This approach allows for the earliest start of ice island construction and correspondingly maximizes the time available for drilling a deep and complex well at this location.\u0000 After completion of drilling and well testing, all drilling equipment and remaining supplies on the islands are returned to the logistics vessel, which remains in the ice until break-up the following summer, when it can sail to a southern port for replenishment.\u0000 While the original FIDS study was based on the use of Russia SA-15 arctic logistics ships, it is possible to foresee construction of similar special purpose ships, perhaps with increased capacity which could support the FIDS concept and which might also act as support or wareships for te open-water drilling season in areas such as the Chukchi Sea.","PeriodicalId":408230,"journal":{"name":"Day 2 Tue, September 21, 2010","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128654259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Arctic tankers: current and future structural design practice","authors":"Robert Tustin, M. Niini, Erkki Ranki","doi":"10.5957/icetech-2010-135","DOIUrl":"https://doi.org/10.5957/icetech-2010-135","url":null,"abstract":"Fleet development and design trends for the Arctic tanker fleet indicate a progressive increase in ship size. The trend to larger ship size is also reflected in feasibility studies considering very large Arctic tanker design concepts. A review of current Arctic tanker structural design practice is offered including an examination of two recent Arctic tanker designs to compare;\u0000 Steel-weight and benefits of two types of ice belt structures\u0000 Ice belt scantlings determined to RS ice category and IACS Polar Class rule requirements\u0000 The Arctic tanker of the future is expected to be a significant step outside of the accumulated design and operation experience base of existing Arctic tankers. For future Arctic tankers it is then expected that new practices for structural design will be required and applied.","PeriodicalId":408230,"journal":{"name":"Day 2 Tue, September 21, 2010","volume":"11 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131599205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Theodore Kokkinis, C. R. Brinkmann, John Ding, D. Fenz
{"title":"Arctic Deepwater Development Drilling Design Considerations","authors":"Theodore Kokkinis, C. R. Brinkmann, John Ding, D. Fenz","doi":"10.5957/icetech-2010-115","DOIUrl":"https://doi.org/10.5957/icetech-2010-115","url":null,"abstract":"To produce hydrocarbons economically from an arctic deepwater discovery, development drilling operations will need to drill a large number of wells over a relatively short time span, leading to a requirement for year-round operations. Such a development drilling system would operate in some of the most severe winter ice conditions occurring in the arctic seas, combining available technology elements and balancing stationkeeping capability with ice management capability. Core design considerations are outlined, involving fabrication, transportation, installation, stationkeeping and disconnection issues, and the impacts of drilling and re-supply operations are assessed. Key technical challenges and associated research and technology development needs are identified.","PeriodicalId":408230,"journal":{"name":"Day 2 Tue, September 21, 2010","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133995077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Arctic Sea Route Transit Analysis for Large Cargo Vessels","authors":"Kyungsik Choi, Jong-Ho Nam, Seong-Yeob Jeong","doi":"10.5957/icetech-2010-173","DOIUrl":"https://doi.org/10.5957/icetech-2010-173","url":null,"abstract":"The purpose of this ice transit analysis is to determine the optimum sea routes and to estimate the operation cost, transit hour, and average speed for large cargo vessels navigating in the Arctic Sea Route prior to an actual deployment of commercial cargo vessel fleet. Four different Arctic ships, such as two bulk carriers, an LNG carrier and a crude oil tanker, are selected for Northern Sea Route transit simulation. Ice and environmental information such as sea ice thickness and concentration, wind direction and wave height are gathered and their probabilistic distribution are used to carry out a transit simulation. In an ice-covered sea, the size and distribution of sea ice significantly restrict the operation of ships and the icebreaker assistance may be an important decision for keeping the speed and direction as planned. Information of multi-year ridge formation and water depth along the Northern Sea Route are added in this analysis. After the selection of optimum sea route, total transit distances and hours, average speed, cost for icebreaker escort and total operation cost are calculated in sequence for each vessel.","PeriodicalId":408230,"journal":{"name":"Day 2 Tue, September 21, 2010","volume":"458 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122392008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Fatigue Damage Estimation of Hull Structure of Large Arctic LNG Carrier due to Ice Loads","authors":"Hisashi Ito, Y. Suh, K. Jang, Seungmun Park","doi":"10.5957/icetech-2010-131","DOIUrl":"https://doi.org/10.5957/icetech-2010-131","url":null,"abstract":"Fatigue damage of a large LNG carrier, Arc 4, due to ice loads is evaluated using a direct calculation method. Ice load estimation is performed based on Kurdumov-Kheisin hydro-dynamic model. Ice thickness is idealized as three categories, and independent ice operation without an icebreaker is assumed. Several hypotheses which have not been fully proven are employed as the first attempt. Fatigue damage due to ice loads is found to be negligibly small comparing with that due to wave loads.","PeriodicalId":408230,"journal":{"name":"Day 2 Tue, September 21, 2010","volume":"26 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122641879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Han C. Yu, Sungeun Kim, Rae-Hyoung Yook, Dong-Yeon Lee, Hyun-Chae Jung, Jong-Soo Seo
{"title":"The Effect of Icebreaking Bow on the Open Water Performance of a Large Arctic Ore Carrier","authors":"Han C. Yu, Sungeun Kim, Rae-Hyoung Yook, Dong-Yeon Lee, Hyun-Chae Jung, Jong-Soo Seo","doi":"10.5957/icetech-2010-111","DOIUrl":"https://doi.org/10.5957/icetech-2010-111","url":null,"abstract":"The exploration of natural resources in the Arctic areas is the main drive behind recent research interest in its harsh environment. The high-quality iron ore in the Baffin Island area has attracted great interest among the mining and shipping communities. The shipboard transportation of the cargo poses numerous challenges since the vessel is required to be able to make shipments to ports in Europe year-round. The ship designer needs to keep a balance between good icebreaking performance and good seakeeping performance. The hull form of a good icebreaking bow typically requires a large flare near the waterline. However, this can cause severe wave impacts, causing increased structural loads. The hull structure is more likely to experience vibratory responses due to the increased wave impacts as the bow flare increases. This hydroelastic interaction of the hull girder in waves can cause increased bending moments and fatigue loads. This paper presents recent experimental and numerical studies of seakeeping, wave impact and hull girder responses of a large Arctic ore carrier. A series of model tests were undertaken at Samsung Ship Model Basin to investigate the global motion, hull girder loads and vibratory responses with three different bow shapes, including the icebreaking bow. A segmented model with an elastic backbone system was used to properly scale the hull girder stiffness and to simulate the vibratory responses. The effects of bow hull form on the global motion and hull girder loads were investigated. Numerical analyses were also carried out to simulate the hull girder vibratory responses in regular and irregular waves using the ABS nonlinear seakeeping program, NLOAD3D. Coupled with a nonlinear wave and slamming impact loads, it was demonstrated that the elastic beam model successfully simulates the observed hull girder vibratory responses in the time domain.","PeriodicalId":408230,"journal":{"name":"Day 2 Tue, September 21, 2010","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131583823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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