The Experts below are selected from a list of 243 Experts worldwide ranked by ideXlab platform
Hohyun Jeong - One of the best experts on this subject based on the ideXlab platform.
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new design analysis procedure of ultra deepwater Drillships
ASME 2012 31st International Conference on Ocean Offshore and Arctic Engineering, 2012Co-Authors: Xiaozhi Wang, Jeong Heon Hwang, Hohyun JeongAbstract:The technical challenges for the structural design of the new ultra deepwater generation of Drillships are optimized hull designs that include greater functionality, flexibility and operational efficiency. Compared with traditional design, some drillship structural designs may not include crude oil storage capacity and the vessel is likely to have less deck area. In addition, they are generally free of equipment on deck and are more compact with an increased integrated hull and drilling system arrangement. This calls for a comprehensive and practical procedure for drillship structural design and verification.This paper describes an advanced design and analysis procedure to address the strength and fatigue requirement which is applicable to all types of drillship structures. With the presumption of unrestricted service operations, the study evaluates structural strength of the drillship in different operating environments (e.g., transit, normal drilling, severe storm), under a variety of operating scenarios and transit conditions. Site-specific conditions with specified probabilities are considered for fatigue evaluation. The presented procedure includes initial prescriptive scantling assessment, comprehensive finite element strength assessment, fatigue assessment, strength and fatigue criteria.Copyright © 2012 by ASME
Clyde W Burleson - One of the best experts on this subject based on the ideXlab platform.
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Deep Challenge - Chapter 5 – CUSS and the World's First Drillship
Deep Challenge, 1999Co-Authors: Clyde W BurlesonAbstract:In 1952, United States produced about seven million barrels of oil per day. Only 70,000 barrels, or approximately one percent, were being recovered from submerged lands. Three-quarters of that came from under the seas off California while the rest was taken in the Gulf of Mexico. When Eisenhower signed the Tidelands Act in 1953, some $62.5 million in royalty payments had been escrowed and were awaiting distribution to either the states or the federal government. Subsequent court fights held up payment to the states for many months. In the end, California received $47 million, Louisiana approximately $15 million, and Texas realized $500,000. The amounts of those settlements clearly indicate where offshore activity was strongest. The change of emphasis, from determining that petroleum deposits were there to devising a method for sinking a well and producing the oil, caused the CUSS Group owners to reconsider their position regarding CUSS itself. Suddenly, questions of technology ownership, potential liabilities that could be incurred in actual drilling, insurance costs, and similar for-profit business issues became significant.
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Deep Challenge - Chapter 8 – A Fleet of Drillships
Deep Challenge, 1999Co-Authors: Clyde W BurlesonAbstract:This chapter reviews that by the early 1960s, Global Marine had lived up to its name. The firm was highly respected for its ability to operate internationally. Global was widely regarded as the most advanced deepwater drilling company in the world. It had been a period of great achievement. By December 1962, Equitable Equipment's Madisonville yard turned out the CUSS II, III, and IV. Like their predecessors, they motored for final fittings to Algiers on the west bank of the Mississippi. Then, on January 19, 1963, CUSS IV began a sea career working for Union Oil Company of California in the Gulf of Mexico. Later, in 1964, she would see service in the United Kingdom sector of the North Sea during the summer months and spend the winter season off the coast of Nigeria. The advent of new stockholders and a stronger, more diverse board of directors opened several opportunities for Global Marine as a company.
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chapter 8 a fleet of Drillships
Deep Challenge#R##N#The true epic story of our quest for energy beneath the sea, 1999Co-Authors: Clyde W BurlesonAbstract:This chapter reviews that by the early 1960s, Global Marine had lived up to its name. The firm was highly respected for its ability to operate internationally. Global was widely regarded as the most advanced deepwater drilling company in the world. It had been a period of great achievement. By December 1962, Equitable Equipment's Madisonville yard turned out the CUSS II, III, and IV. Like their predecessors, they motored for final fittings to Algiers on the west bank of the Mississippi. Then, on January 19, 1963, CUSS IV began a sea career working for Union Oil Company of California in the Gulf of Mexico. Later, in 1964, she would see service in the United Kingdom sector of the North Sea during the summer months and spend the winter season off the coast of Nigeria. The advent of new stockholders and a stronger, more diverse board of directors opened several opportunities for Global Marine as a company.
Xiaozhi Wang - One of the best experts on this subject based on the ideXlab platform.
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new design analysis procedure of ultra deepwater Drillships
ASME 2012 31st International Conference on Ocean Offshore and Arctic Engineering, 2012Co-Authors: Xiaozhi Wang, Jeong Heon Hwang, Hohyun JeongAbstract:The technical challenges for the structural design of the new ultra deepwater generation of Drillships are optimized hull designs that include greater functionality, flexibility and operational efficiency. Compared with traditional design, some drillship structural designs may not include crude oil storage capacity and the vessel is likely to have less deck area. In addition, they are generally free of equipment on deck and are more compact with an increased integrated hull and drilling system arrangement. This calls for a comprehensive and practical procedure for drillship structural design and verification.This paper describes an advanced design and analysis procedure to address the strength and fatigue requirement which is applicable to all types of drillship structures. With the presumption of unrestricted service operations, the study evaluates structural strength of the drillship in different operating environments (e.g., transit, normal drilling, severe storm), under a variety of operating scenarios and transit conditions. Site-specific conditions with specified probabilities are considered for fatigue evaluation. The presented procedure includes initial prescriptive scantling assessment, comprehensive finite element strength assessment, fatigue assessment, strength and fatigue criteria.Copyright © 2012 by ASME
Charles R. Greene - One of the best experts on this subject based on the ideXlab platform.
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Reactions of bowhead whales, Balaena mysticetus, to drilling and dredging noise in the Canadian Beaufort sea
Marine Environmental Research, 1990Co-Authors: W. John Richardson, Bernd Würsig, Charles R. GreeneAbstract:Abstract Behavioural reactions of bowhead whales to seven 30–40 min underwater playbacks of recorded drillship and dredge noise were determined in 1982–1984. Some (but not all) bowheads oriented away when received noise levels and spectral characteristics were comparable to those several kilometres from actual Drillships and dredges. During some playback tests, call rates decreased, feeding ceased, and cycles of surfacing, respiration and diving may have changed. Sensitivity of various whales to noise differed. Roughly half responded when the received level of noise was about 115 dB re 1 μPa on a broadband basis, or about 110 dB in one 1 3 - octave band (20–30 dB above ambient). Such levels occurred 3–11 km from a drillship and dredge in the Canadian Beaufort Sea. Bowheads occasionally were seen
Jeong Heon Hwang - One of the best experts on this subject based on the ideXlab platform.
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new design analysis procedure of ultra deepwater Drillships
ASME 2012 31st International Conference on Ocean Offshore and Arctic Engineering, 2012Co-Authors: Xiaozhi Wang, Jeong Heon Hwang, Hohyun JeongAbstract:The technical challenges for the structural design of the new ultra deepwater generation of Drillships are optimized hull designs that include greater functionality, flexibility and operational efficiency. Compared with traditional design, some drillship structural designs may not include crude oil storage capacity and the vessel is likely to have less deck area. In addition, they are generally free of equipment on deck and are more compact with an increased integrated hull and drilling system arrangement. This calls for a comprehensive and practical procedure for drillship structural design and verification.This paper describes an advanced design and analysis procedure to address the strength and fatigue requirement which is applicable to all types of drillship structures. With the presumption of unrestricted service operations, the study evaluates structural strength of the drillship in different operating environments (e.g., transit, normal drilling, severe storm), under a variety of operating scenarios and transit conditions. Site-specific conditions with specified probabilities are considered for fatigue evaluation. The presented procedure includes initial prescriptive scantling assessment, comprehensive finite element strength assessment, fatigue assessment, strength and fatigue criteria.Copyright © 2012 by ASME
