... heating technology electrically trace formula inductance offshore technology conference efficiency conductor capacitance transfer function eth cable eth cable model resistance B. Ansart , A. Marret , T. Parenteau , O. Rageot : Technical and Economical Comparison...

... frequency domain based finite element analysis (FEA) approach/design-tool to calculate the fatigue damage of piping systems due to FIV or AIV. For a FIV analysis, the two key steps that can be identified in this approach are: (1) the development of a transfer function, and (2) the generation of a pressure...

... reconstruction in the wellhead, conductor and surface casing was performed directly using the measured motion data and an analytical transfer functions obtained from the calibrated Finite Element (FE) model. Results were provided with fast turnaround time to support operations. Results demonstrated that fatigue...

... Current subsea wellhead fatigue monitoring systems typically measure subsea BOP stack response and convert accelerations directly to the stress on various critical wellhead components using transfer functions. The veracity of this process relies on the accuracy of input data and the numerical...

... in structural integrity management is presented in this paper, which can minimize the cost and improve time management for a variety of projects. upstream oil & gas hydraulic fracturing assessment fatigue assessment short-term fatigue damage wave direction transfer function offshore structure...

... fatigue method has been recently developed and is based on analytical transfer functions used to convert measured accelerations into curvature. Another method considers FEA-based transfer functions. Some of these methods perform fatigue calculations in time domain while some others in frequency domain...

... structures. In this approach, hot-spot stress response spectra in the frequency domain, considering stress concentration factors and stress transfer function, are generated using spectral fatigue method. Damage of the hot spots for a given sea state is carried out using products of the hot-spot stress...

... to minimize the effects of noise should be implemented. Calculation of Stress Transfer Functions Most of the wellhead fatigue measurement programs conducted to date rely on measurements of acceleration and/or angular rate that are converted to displacements and angles respectively, from which bending loads...

... and vessel-driven motions. A semi-analytical method was developed to estimate wellhead fatigue damage directly using the measured BOP stack motion data. High quality vibration data from the SVDLs were used in conjunction with analytical transfer functions to directly compute stress time histories and S-N...

... response is usually assumed as a linear system, and the response spectrum can be described as: 2 OTC 24043 2( ) ( ) ( )R wS S H (1) Where, ( )RS and ( )wS are the response spectrum and wave spectrum respectively, ( )H is the transfer function. After getting the platform response spectrum...

... uncertainty distribution at each unsampled location. The resulting collection of spatial distributions is subsequently inserted into physical models, which translate the geological parameters into financial or operational performance indicators. These models, the so called utility or transfer functions, can...

... well log data application artificial neural network neural network transfer function OA A A C T T re o re A D in m a N R T lo s b K I W p in p b ( ( N b t li s s u c s n TC 2296 rtificial pplicatio rvind Kumar opyright 2012, Offsho his paper was prepare his paper was selecte viewed by the Offsho...

... suction pile hoist wire support vessel arrangement zoontje frequency stiffness dynamic behavior offshore pipeline transfer function upstream oil & gas OTC 21291 Offshore Monitoring Campaign on Installation of Suction Piles in Deep Water Fields J.P. de Vries, J. van Drunen, R. van Dijk...

... for Classification of Ships Pt.3 Ch.1. supply boat procedure requirement statistics limit state floating production system loading condition structural design overview strength evaluation calculation upstream oil & gas offshore technology conference transfer function hull girder assessment...

... equipment, and re-injection facilities. requirement topside support stool fpso fatigue analysis dwt fpso stress contour subsea system support stool fatigue life riser support floating production system collision upstream oil & gas hencky-von mise stress contour transfer function...

... to account for the mooring loads, risers, bearings, etc. dataset procedure consideration subsea system longitudinal stiffener freight & logistics services grid area transfer function marine transportation requirement mooring system corrosion fatigue damage fatigue life severity...

... i +j T~' = III, I'll<' cubic transfer function He(i. J. lpn'sents till' stn'llgth of t hp i + j + ~. = IJ I intpractiOll. Detailed informatiun on dptprmining lfL. Hid all/] H" arp givpn in [G]. Hprp WI' SUIlIIlI,ll'izp thp kp\' idl'as, I'll<' approadl is based on nlinimizing t lH' nl/'an sqllm...

... reduced to 4 for the analysis. Each seastate was characterized by a Pierson-Moskowitz wave spectrum. No blocking of the seastates was performed, instead each seastate wave was included in the fatigue analysis. Transfer Function Waves A wave steepness of 1/20 was assumed. A maximum wave height of 27.9 feet...

.... Introduction The theoretical approach to mooring problems has been advanced considerably in the last decades. In 1971 theoretical knowledge of mooring systems did hardly exist. With the establishment of the 3-D diffraction theory in 1976, see Ref. 1, computations of the transfer functions of first order...

... fpso floating production system flowline corrosion bracket requirement inspection fatigue life corrosion management subsea system sn curve production chemistry transfer function column shell upstream oil &amp; gas corrosion inhibition renewal @* . Structural Life Extension of a Twenty...