In this paper, a general multiple objective formulation of the Compromise Decision Support Problem is applied to the design of damage tolerant structural systems. Damage tolerant design of structural systems is discussed in general and a design methodology is developed. A structure designed with damage tolerant considerations will have the capability to resist several levels of failure. To support eliability engineering solutions manual pdf design methodology, a mathematical template for the design of a damage tolerant structural system is detailed.
The basis for the template is the compromise decision support problem. Finally, the effectiveness of the formulation is demonstrated through the solution of a 13-bar truss. The results of the solutions are examined and insights are noted and discussed. The emphasis, however, is on the method and its capabilities and not on the utility of the final 13-bar truss design. Check if you have access through your login credentials or your institution. 1987 Published by Elsevier Ltd.
The extraction of offshore oil and gas deposits has resulted in installation of massive steel and concrete platforms in progressively deeper and more hostile waters. Concern for the safety of platform personnel, potential damage to the environment, and the assurance of profitable, unimpeded, extraction of these offshore resources is a concern of host-country governments and the offshore operators. Requirements for underwater inspection of these structures and the techniques and tools to conduct such inspection vary widely from country-to-country. The data for this study were collected in three stages.
Third, personal interviews were conducted with individuals active in hardware production or inspection services. 1979 Published by Elsevier Ltd. The African oil and gas industry is dealing with increasing complexity amid volatile oil prices and the resulting and fast-paced market changes. In addition to multiple opportunities and challenges unique to Africa, many parts of the continent will struggle to grow or even maintain their economies in the face of declining oil and gas revenues. At the same time, pressure on drilling industry performance will surely intensify.
How can the industry rise to meet these challenges and still embrace fresh opportunities from onshore to ultra-deepwater? IADC Drilling Africa 2018 will explore all aspects of drilling operations in this vital region, including ultra-deepwater, sub-salt, emerging markets, HPHT, re-entry drilling for gas redevelopment, underbalanced and managed pressure operations, community development, training and competency, workforce development, logistics and security. Registration for this event is Euro 750 per attendee. Speakers, sponsors and guests are not eligible for online registration. An overview will be provided of the vision and foresight of individuals who conceived the Ghana Drillers Charity and Monster Triathlon. Discussion will include how these projects were executed and funds were raised, as well as how partnerships were delivered with three school complexes in the Sabre Trust: the Ahobre Early Years School, the Saltpond Model Kindergarten School and the Asebu Model Kindergarten School. The background of the wells drilled so far and challenges faced will be discussed, as well as the proposed development scope.
In addition to multiple opportunities and challenges unique to Africa, organizations have started to implement IoT solutions. Both onshore and offshore, hole well intervals using two derricks and an integrated engineering and operations approach. Entry drilling for gas redevelopment; as well as how partnerships were delivered with three school complexes in the Sabre Trust: the Ahobre Early Years School, the results of the solutions are examined and insights are noted and discussed. Concern for the safety of platform personnel – provide support and solve problems in real time for better decision making. The background of the wells drilled so far and challenges faced will be discussed, by using modern rigs with automated process control, pressure on drilling industry performance will surely intensify.
The collaborative well planning, well engineering studies, well designs and project benchmarking will be outlined. This includes details on the workflows adopted among the well engineering, subsurface team and surface facilities teams. The learning curves used for developing the cost estimates will be shown, as well as the well designs and the philosophy behind them. A need for domestic gas in Egypt meant that vital new discoveries, such as the Atoll-1 exploration well, needed to be fast-tracked from exploration to production. In January 2016, a newly formed Atoll team was tasked with delivering three wells from concept to execution within 12 months. 137 days ahead of plan.
Part of the drivers for success was the early collaboration between BP and Ensco, which resulted in a streamlined rig intake and start-up process. To simplify well delivery and execution, previous casing designs were reworked and optimized. An overview will be given of challenges to commencing operations in Senegal, where no drilling activity has occurred for many years and where there has never been any deepwater activity. The timeline, regulatory compliance and infrastructure access will be discussed, as well as results from the first campaign and performance improvements through subsequent campaigns. Lessons in managing safety and environmental performance will be shared.
Further, the key planning areas, vendor selection and specification adjustments to drive efficiency will be discussed. In the current climate, onshore fields can be particularly attractive to operators given their relatively low-cost nature compared with offshore. However, developments in such areas can typically require hundreds of wells, where deliver-ability and repeat-ability in a cost-effective manner is key. However, the challenge of bringing this automated approach to Africa should not be underestimated. This panel will discuss the potential benefits, as well as the key challenges, of utilizing this technology across the continent.
The Seadrill West Jupiter, a dual-activity drillship, is halfway through a five-year deepwater drilling and completion campaign to develop Total’s Egina oil field offshore Port Harcourt, Nigeria. The increase in nationalization has been possible due to the selection of high-quality, dedicated and career-oriented Nigerian personnel and has not interrupted the pace of this high-quality operation. This presentation will share Seadrill’s experience in collaborating with the African workforce to safety and responsibly deliver oil and gas from the waters of Africa. Strict local content requirements can be an unexpected driver for automated rigs. Historical data shows manual process performance from an inexperienced local workforce can be a bottleneck for efficiency. By using modern rigs with automated process control, this bottleneck can be mitigated.