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Abstract This paper details the risk-based approach to optimize the recertification cost of Open-water intervention riser systems (OWIRS) in Nigeria. The recertification of Open-water intervention riser systems (OWIRS) is a conservative maintenance program that occurs every fifth year according to recommended practice and client requirements (1) (2) (3). Reliability and Integrity assurance are critical during any intervention activity because a runaway failure effect could escalate to an unwanted event, potentially impacting HSE, cost, and even reputation (4). The recertification of the Open-water intervention riser systems (OWIRS) has always been a capital-intensive activity due to the conventional approach deployed by various organizations resulting in a long period of asset unavailability and high cost. Although some notable recommended practices (1) (3) provide guidance but the approach for execution remains with the stakeholders. Due to the current Russia-Ukraine War and continuous drive to stay agile and lean for the removal of wastages, this paper has reviewed the cost element of typical recertification, adopted the hybrid technique comprising Failure Mode, Effect and Criticality Analysis (FMECA), and Reliability Centered Maintenance (RCM) decision tree (5) to develop a cost-effective approach to recertification for OWIRS. The results showed that specific and value-focused scopes driven through the aggregation of maintenance strategies are efficient. Engrafting an established and critical recertification maintenance scope into existing maintenance programs on Computerized Maintenance Management System (CMMS) that is driven more by a condition-based approach, condition monitoring and proactive tasks from lessons learned from field non-conformances reports and corrective actions provided a significant reduction to waste generated during the planning and execution of recertification project. The integration of recertification as part of the maintenance program is a pathway to saving great cost values of recertification whilst ensuring asset availability and Integrity (4).
- North America > United States (1.00)
- Europe (1.00)
- Africa > Nigeria (1.00)
- Government (1.00)
- Energy > Oil & Gas > Upstream (1.00)
- Law (0.93)
Remote operations enable employees to work onshore in remote operations centers rather than in high-risk offshore environments. In addition, the carbon footprint of the uncrewed surface vessel is up to 95 % smaller than conventional support vessels, and the client has access to near-real-time data. Fugro has completed its first fully remote offshore survey inspection in the North Sea for energy company TAQA using one of its Blue Essence uncrewed surface vessels with the Blue Volta electric remotely operated vehicle. The complex project, in Europe's busiest part of the North Sea, involved the inspection of two platforms and more than 40 km of pipeline off the coast of the Netherlands. The inspection included seabed mobility investigation, pipeline depth measurement, visual inspections, and cathodic protection measurements within the 500-m zone to ensure the integrity of TAQA's assets.
- Facilities Design, Construction and Operation > Offshore Facilities and Subsea Systems (1.00)
- Data Science & Engineering Analytics > Information Management and Systems (1.00)
- Facilities Design, Construction and Operation > Facilities and Construction Project Management > Offshore projects planning and execution (0.65)
ABSTRACT Certain words can be perfectly ordinary and yet completely out of place, depending upon the circumstances. I would take care not to mention "tape recording", for example, to any of our living ex-Presidents, should we happen to meet. I don't suppose that " Hoosier " is very popular at the University of Michigan just now, and one certainly would not breathe the phrase "budget surplus" within the hearing of Abe Beame, or mention Carter to Jackson, or vice versa. For this group, I suppose, the a word is "planning", particularly the government variety. Yet circumstances compel me to refer to the concept in these remarks on the future of the energy industry, in fact to build my presentation around it. In brief, I believe that government, particularly the Federal government, must be an increasingly large factor in our business in the years ahead. It seems to me that a wise policy of government-industry interaction is absolutely necessary not only to solve the energy problems we face, but to preserve the vitality of the free market itself. I stress the word planning because the helter-skelter government interventions of the last couple of years clearly do nothing to solve our difficulties. The question that faces America today is not whether we will have a mixed economy, a blending of public and private initiative, but what kind of mix it should be. I believe that there is a strong future for the market system in the country, but only if we who understand that system best can make the case with logic and force, and only if we are willing to acknowledge that government has a growing role in our economic system that must be shaped rather than fought. I am not asking for more government involvement in business per se. What I am suggesting is that the enterprise system cannot function properly without the right kind of government intervention, at the right time and in the right degree. For example, after two years of watching the halting and largely in effectual efforts of government to deal with the energy issue, it seems more clear to me than ever that the country needs establishment of goals for energy planning on a national scale. And since energy pervades the economy, I think that by extension we need some kind of national economic planning as well. This need, as I said, is not apparent to most businessmen who tend to regard the idea of a limited amount of national economic planning as equivalent to being a little bit pregnant. Unfortunately, the argument tends to polarize at two extremes: 1) the out and out free enterprisers who hold dogmatically that the less government interference in the economy, the better; and 2) the convinced central planners who argue that in the best of all possible economies, only nonnecessities such as luxury food or vacation houses would be left to the fluctuations of competitive pricing, with the amounts charged for all the so-called necessities stabilized--controlled--by government fiat.
- Energy > Oil & Gas > Upstream (0.94)
- Law (0.94)
- Energy > Power Industry (0.68)
- Government > Regional Government > North America Government > United States Government (0.47)
Abstract Geothermal Play Fairway Analysis (GPFA) is an exploration process adopted to geothermal, that integrates data of critical risk elements inherent to that specific geothermal play type. The key function of GPFA is to reduce risk and increase focus for improving exploration success rates. GPFA begins at the regional/basin scale, and progressively focuses in on the play scale. It then examines the critical risk element data to highlight which play areas have the highest likelihood of success (prospects). Countries in the Middle East and North Africa (MENA) region are taking significant steps to address the need for more energy sustainable solutions by exploring opportunities in geothermal energy. The Kingdom of Saudi Arabia (KSA), the largest oil-producing country in the world, has previously has recently focused on its significant geothermal resource potential. Power production in the western region alone, including Ain Al Harrah's 26.99 MWt reservoir potential, is expected to contribute to 9% of KSA's 54 GW renewable energy prospective goal. KSA has recognized the need for an energy transition as outlined in its Vision 2030 plan and intends to fully operate on renewable and low carbon energy forms by 2030. This plan and shift towards sustainable energy solutions throughout the MENA region are driven by variables such as climate change regulations, fossil fuel pricing/availability, increasing greenhouse gas emissions, power potential and cost-effectiveness of geothermal energy, reduction in pollution by geothermal power plants, and increased energy demand. During this critical initial phase, successful geothermal reservoir exploration, characterization, and development will require a thorough understanding of the critical risk parameters inherent to functional geothermal systems. Of particular importance will be the reduction of uncertainty in the exploration phase. In this presentation, we will review several case studies of GPFA applications and investigate how these workflows may be applied to areas such as KSA and the greater MENA region. We will elaborate how GPFA workflows provide cost effective identification and development of geothermal resources, leading to significant risk reduction, increased investor confidence, and support the full-scale growth of geothermal in the coming energy transition.
- Asia > Middle East > Yemen (1.00)
- Asia > Middle East > Saudi Arabia (1.00)
- Africa > Middle East > Egypt (1.00)
- Africa > Middle East > Djibouti (1.00)
- Geology > Geological Subdiscipline (1.00)
- Geology > Structural Geology > Tectonics (0.69)
- Geology > Rock Type > Sedimentary Rock (0.48)
- Energy > Renewable > Geothermal > Geothermal Resource (1.00)
- Energy > Oil & Gas > Upstream (1.00)
- North America > United States > Wyoming > Great Basin (0.99)
- North America > United States > West Virginia > Appalachian Basin (0.99)
- North America > United States > Virginia > Appalachian Basin (0.99)
- (15 more...)
Dynamic Performance of an Innovative Mooring System for Moderate Water Depth
Yang, Ruyan (Institute for Ocean Engineering, Tsinghua Shenzhen International Graduate School) | Li, Wei (Key Laboratory of Far-shore Wind Power Technology of Zhejiang Province) | Wu, Yu-Fei (Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, Shenzhen University) | Gao, Shan (Key Laboratory of Far-shore Wind Power Technology of Zhejiang Province) | Chen, Jinlu (Institute for Ocean Engineering, Tsinghua Shenzhen International Graduate School) | Zheng, Xiang Yuan (Institute for Ocean Engineering, Tsinghua Shenzhen International Graduate School)
ABSTRACT The mooring design for moderate water encounters a conundrum of combining the virtues of reliable mooring performance and a competitive cost. In this article, an innovative mooring concept specially for moderate water (30-100m) is proposed. Taking a floating offshore wind turbine (FOWT) as the moored object, a comprehensive comparison between a proposed and patented new mooring scheme and the traditional catenary mooring is carried out through static, free decay, dynamic and cost analyses. Almost all results demonstrate that the new mooring is not only superior in mooring performance but economically attractive in fabrication. INTRODUCTION In recent years, wind energy has gained more and more attention worldwide due to its renewability, sustainability, high efficiency and low emission of carbon. Many countries consider the exploitation of wind energy as an indispensable part of their energy strategies. Compared with the onshore wind energy, several attributes of offshore wind energy provide immense potential for its development such as more stable resource, vaster in space for utilization, and of fewer impacts on environments. According to the Global Wind Energy Council (GWEC, 2022), the cumulative installed capacity of offshore wind power reached 56GW as of the end of 2021, up 60% on the previous year. In terms of foundation patterns, the offshore wind turbines are divided into bottom-fixed wind turbines and FOWTs. The construction and installation cost of the bottom-fixed wind turbine soars when the water depth exceeds 50m (Henderson, 2010), but the FOWT quickly emerges as a strong alternative for a wide range of water depths. The last ten years have seen dozens of FOWT projects successfully commissioned in moderate water and even deep water. As the world's first commercial offshore wind farm, Hywind Scotland (Equinor, 2017) consists of five 6MW wind turbines with Spar foundation. Hywind Tampen (Equinor, 2022), the world's first FOWT project to supply power to offshore oil platforms, continues to adopt the same Spar foundation concept. Simultaneously, the semi-submersible wind turbine begins to emerge by virtue of its small draft and convenient wind turbine installation operation. The semi-submersible foundation is successfully adopted in WindFloat Atlantic (EDP Renewables, 2019) in Portugal as well as Kincardine (Principle Power, 2021) in UK. Currently, Kincardine is the largest floating wind farm in the world with a total of 50MW turbines. Its 9.5MW unit makes a key breakthrough in the development of large capacity of a single wind turbine. A detailed review of the latest FOWT projects worldwide can be referred to Yang et al. (2022).
- Asia > China (0.95)
- North America > United States (0.68)
- Europe > United Kingdom > Scotland (0.24)
- Research Report > New Finding (0.48)
- Research Report > Experimental Study (0.34)