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Keywords: current profile
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Proceedings Papers

Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31020-MS
... northern Gulf of Mexico. From the analysis of long-term current profile observations and drifter data we found that, on average, near-inertial oscillations have higher amplitudes outside of the areas of strong low-frequency currents associated with a Loop Current Eddy (LCE). Within the upper 200m...
Proceedings Papers

Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-30921-MS
... of the key reasons for the overpredictions of the VIM in the towing tank tests. Among the possible reasons, listed by Ma et. al. (2013) , for the VIM response overprediction are use of constant current profile instead the sheared profile observed in the field, the use of linear springs to represent...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29503-MS
... to raise alarms in the field by comparing motions measured in the field using one or more motion sensors. The determination of such alarm limits is challenging as VIV is a highly nonlinear process, and small changes in the speed or shape of current profile can result in quite different VIV fatigue results...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29601-MS
... velocity tbm current speed drag force identification current profile transponder data offshore technology conference tendon refill scenario installation OTC-29601-MS Forensic Data & Decisions: Utilizing Data Intended for Other Purposes David Wisch and Luc Huyse, Chevron Energy Technology...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27520-MS
... Abstract Extreme N-year current profiles for Loop Current and Eddies (LCE) are required for the strength and fatigue assessment of the risers and wellhead/casing systems. The profiles for different return periods (i.e., N = 1, 10, 100, etc.) are derived from an extreme value analysis (EVA...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27598-MS
... Abstract Information about near-surface currents provided in near-real-time is required in a variety of applications. However, direct measurements of near-surface currents are scarce. In the Gulf of Mexico, the oil industry has been collecting current profiles from deepwater rigs, platforms...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27692-MS
.... This paper covers the methodology and results of full-scale OrcaFlex/SHEAR7 simulation work performed on drilling risers in realistic current profiles for the Gulf of Mexico (GoM), concluding with the impact this technology could have in reducing costs by increased operability for drilling risers. LGS...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27599-MS
... speed current profile surface current speed assessment upstream oil & gas mooring system lce hurricane operation lce event loop current criteria offshore technology conference hurricane only metocean neutral position subsea system configuration Cooper , C. K...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2016
Paper Number: OTC-27075-MS
... and wellhead/casing systems using a site-specific scatter diagram of LCE. A scatter diagram consists of a number of full-depth current speed profiles and associated probabilities of occurrence for each profile. Scatter diagrams often consist of too many current profiles, which can make the VIV analysis...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2015
Paper Number: OTC-26051-MS
... events in the second half of 2014 and how the actual motions compare with predicted motions. spar fatigue damage subsea system stiffness reduction current profile mooring system strake configuration hull amplitude tension range vim response artificial intelligence fairlead fatigue...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2014
Paper Number: OTC-25421-MS
...-inertial motions in a large Anticyclonic Ring in the Oyashio ," J. Oceanography . Vol. 58 , pp 673 – 682 , 2002 . Abstract We discuss the results of a process-oriented analysis of current profile measurements collected from 2005 through 2010 in the Gulf of Mexico by oil industry operators, who...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2013
Paper Number: OTC-24207-MS
... the norm to determine the platform's VIM response characteristics. Towing-type tests are widely accepted and employed for VIM model tests; however this test method only simulates a uniform current profile with depth. In the actual ocean environment, only sheared currents are present so the tow test method...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2013
Paper Number: OTC-24024-MS
... Abstract Kuroshio is a major global current that flows near the east coasts of Taiwan and Japan. Kuroshio is a relatively strong current with typical speeds of 3 to 5 knots at the water surface. It is important to properly understand extreme current profiles of these currents for any drilling...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2012
Paper Number: OTC-23563-MS
... and knowledge of the highcurrents along the continental slope, the various deepwater measurementscollected in the past have not been analyzed in a systematic way to gainunderstanding as to how current profile shapes change when moving from theslope into deeper waters. Recent oceanographic literature is reviewed...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2012
Paper Number: OTC-23570-MS
... Kenny. Fugro GEOS study describes how BOEMRE's NTL ADCP data, historical mooringcurrent data and Princeton University's PROFS model data were used to derivethe current profiles to be used in the riser/Tension Leg Platform (TLP) tendonVortex Induced Vibration (VIV) fatigue study described in this paper...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2011
Paper Number: OTC-21845-MS
..., and those in between. According to the eXpendable BathyThermographs (XBTs) temperature data across Eddy Zorro in June and July 2007, the 15°C contours are located around 300 m. An Emperical Orthogonal Functions (EOF) analysis method was also applied to identify the characteristics and major current profile...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 3–6, 2010
Paper Number: OTC-20850-MS
..., Production) The field location of all items covered by Scope of Work is shown in Figure 1. Current Profiles Based on the Frade field metocean data, two current profiles ha drag force may occur either at the surface or at the seabed. Th by the red line in Figure 2 represents the bottom current prof line...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2008
Paper Number: OTC-19249-MS
... current profiles for deepwater up to 1800 meters present the characteristic of being composed by two layers coming from different generation sources. These layers most of the time present different directions. The first layer covers the depths from sea level to levels around 300 to 400 meters, going...

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