... to the umbilical plane—to estimate in-plane and out-of-plane VIV damage, respectively. This method is often conservative, as it does not account for the impacts of current profile amplitude and directionality on the umbilical configuration and resultant natural modes, relying instead on one nominal set of mode...

... of damping from mooring and risers on the VIM response of the platform. Different mooring models are investigated as well as the effect of different current profiles. The calculated results for the equivalent linearized mooring system are first blindly benchmarked against available model test data which...

... 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...

... and the field measurements. Numerical and experimental data are presented to demonstrate the application and advantages of the proposed approach upstream oil & gas model test overprediction current profile floating production storage & offloading vim response vortex induced motion vim...

... 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...

... identification artificial intelligence current profile transponder data offshore technology conference tendon refill scenario node investigation installation OTC-29601-MS Forensic Data & Decisions: Utilizing Data Intended for Other Purposes David Wisch and Luc Huyse, Chevron Energy Technology...

... 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...

... used measured current profile combined with the N-year hurricane only design metocean. Due to a limited amount of measured current data, a 30-day averaged current speed of 3.1 knots was chosen for the analysis. A selected LCE profile is shown in Figure 1. The current direction was selected to be most...

... 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...

... 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 technology provides significant reduction in VIV response whilst maintaining similar buoyancy to conventional...

... 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...

... events in the second half of 2014 and how the actual motions compare with predicted motions. current profile mooring system strake configuration hull stiffness spar fatigue damage tension range vim response subsea system reduction amplitude upstream oil & gas vim event line...

... 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 are required to measure ocean current profiles and transmit these data in near-real-time. The individual data...

... 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...

... 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...

... 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...

... 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...

..., 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...

... otc 20777 configuration optimization problem fpso current profile criteria machine learning constraint criterion procedure optimization process riser design OTC 20777 Optimization Procedure of Steel Lazy Wave Riser Configuration for Spread Moored FPSOs in Deepwater Offshore Brazil...

... and 4 umbilical risers in the Frade Field, and to later recover and transfer to the Frade FPSO when it was in-place. load case interference operation offshore operation hv 1 bslm fpso winch current nr clearance riser current profile sea state technical challenge recovery route...