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Keywords: standard deviation
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Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2020
Paper Number: OTC-30613-MS
... wave height data assimilation real time system wave power ocean energy sustainable development offshore technology conference prediction computational domain sustainability social responsibility standard deviation us government enkf wave energy converter power prediction confidence...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29514-MS
... Abstract The paper describes two approaches for deriving the mean, standard deviation and probability density function of the method uncertainty for five axial capacity pile design methods, namely the API, Fugro, ICP, NGI and UWA methods. A new unified database of pile load tests recently...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29534-MS
... strain amplitude also follow a Gaussian distribution in a logarithmic format. A method is developed where a -N design curve can be obtained if the mean strain of each strain range is shifted by a set number of standard deviations that capture a 97.7% probability of survival and a 75% confidence in the...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29642-MS
... mooring tension data is not that meaningful. We developed parametric data procedures so that the same routine can handle different types of data and their errors. Outlier removal routines use the standard deviation of the time-series which itself could be biased from errors. Therefore, a method to compute...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29289-MS
... allowed for in the (1988) SNAME T&R Bulletin 5-4. 4 OTC-29289-MS The presented measures of variability in reported wind loads, or data scatter, is standard deviation and relative standard deviation ( r) the standard deviation divided by the mean value, expressed as a percentage. Coordinate System. Two...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29398-MS
... manner than deterministic analyses alone, both for design and for reevaluation. Managing geotechnical risks should today become a natural part of the engineer's work. method uncertainty characteristic value risk management failure probability annual probability nadim standard deviation risk...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2018
Paper Number: OTC-28652-MS
... factor column position maximum tilt efficiency standard deviation Kister H. Z. , Steinmeyer , P. M. D. E. , Penny , W. R. , Crocker B. B. , Fair J. R. 2008 ; Perry's Chemical Engineers’ Handbook 8 th Edition , Equipment for Distillation and Gas Absorption: Packed...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2018
Paper Number: OTC-28738-MS
... elevation models (DEMs) with idealized perturbations representing seafloor subsidence and faulting, this paper examines limits to seafloor change detection using repeat MBES surveys in terms of the standard deviation of the noise in the surveys. In general, the magnitude of vertical change between surveys...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27562-MS
... different. Water depth at the site is 2600 ft, while water depth at the production platform is ~6300 ft. Figure 5 ADCP Current Speed Data from Nearby Production Platform (Central Time) Figure 6 Strouhal Vortex Shedding Frequency (St = 0.18) (Central Time) Acceleration standard deviation for the three SVDLs...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27605-MS
... deviation. In the OTC-27605-MS 27 Student's t-distribution, with n-1 degrees of freedom, the mean curve minus a number of standard deviation represents a certain percentage of the design curve. The test data for burst and fracture had a calculated standard deviation of 0.031. The test data for buckling had...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27723-MS
... characterization magnitude standard deviation confidence level upstream oil & gas bayesian inference information quality control criteria petrophysical parameter resistivity Rau R. , Davies R. , Finke M. , Manning M. , " Advances in high frequency dielectric logging...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27763-MS
... resistance coefficient soil condition swp prediction method offshore technology conference wind energy monopile standard deviation Anusic , A. , Eiksund G. R. and Liingaard , M. A. ( 2016 ). Comparison of pile driveability methods based on a case study from an offshore wind...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2016
Paper Number: OTC-27296-MS
... probability density distributions that can be used to characterize the uncertainties within the analysis. Most of the subsea new technologies parameters have uncertainties that are well characterized by normal, lognormal, and Weibull distributions, which defined by the mean, , and standard deviation, , of...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2015
Paper Number: OTC-25932-MS
...-MS The procedure followed to select the fatigue-characteristic sea states has been to calculate a pseudo- fatigue damage based on the standard deviation of the wave induced vertical motion at the attachment point of Riser no. 10 (see Tables 9 and 10). The formula assumes that the stress-response...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2015
Paper Number: OTC-25921-MS
... angle inclination standard deviation upstream oil & gas correlation strain gauge calculation well stiffness Presentation of OTC-25921-MS Presentation of OTC-25921-MS ISO 13628-7:2005 , Design and operation of subsea production systems–Part 7 : Completion/workover riser...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2015
Paper Number: OTC-25922-MS
... water cut reservoir pressure upstream oil & gas control valve modeling & simulation level control flowline geometry pipeline model flow rate dynamic simulation pipeline transient behavior subsea separator production flowline separation and treating process model standard deviation...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2015
Paper Number: OTC-25965-MS
... deviation in flow direction (Figure 3-top right) shows that flow direction is more consistent as distance from shore increases. In this study, the standard deviation at a depth of 50 meters is approximately 50% less at the furthest location from shore than at the location nearest to shore. Figure 3 (bottom...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2014
Paper Number: OTC-25429-MS
.... Among these metrics are displacement (3 components), stress (at eight locations along the circumference of the pipe), flow-induced forces (3 components), and acceleration (3 compo- nents). The standard deviation of in-line and cross-flow pipeline displacement (i.e., fluctuating displacement) along the...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2014
Paper Number: OTC-25355-MS
.... Initial results from this assessment will be presented. In particular, we include examples specific to potential future changes in hurricane impacts on Gulf of Mexico offshore facilities. simulation frequency standard deviation tropical cyclone cyclone information boundary condition...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2014
Paper Number: OTC-25349-MS
... system standard deviation upstream oil & gas hurricane hang-off zone correlation analysis design validation integristick angular rate slwr sensor touchdown zone frequency accelerometer offshore technology conference riser Presentation of OTC-25349-MS Presentation of OTC-25349...

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