... Abstract The paper identifies the wave drift forces and low frequency damping induced by a wide range of extreme sea conditions on two floating units based on model test data, assesses the limitations of today's numerical procedures and proposes solutions to overcome the limitations. Since wave...

... Crawford , J. M. , W. E. N. Doty , and M. R. Lee , 1960 . Continuous signal seismograph . Geophysics , 25 , no. 1 : 95 - 105 . Hallock , G. A. , and M. A. Meier , 2012 . Low frequency pressure modulation of indium antimonide . Review of Scientific...

... Duval , G. 2012 . How broadband can unlock the remaining hydrocarbon potential of the North Sea . First Break , 30 , no. 12 , 85 - 91 . Hak , B. Submitted abstract. Incorporating seismic velocity data in AVO/AVA low frequency models by honoring local geology , Submitted...

... to achieve this goal. Enabling a quantitative Broadband well-tie is a vital and the fundamental part of quantitative interpretation workflow for broadband seismic data. Without it we simply cannot achieve the full value value because we cannot incorporate some or all of the low frequencies. Appropriate data...

... of the recorded data, the ghost effects on the source and receiver sides, the external and internal noise and the ambiguity (nullspace) of the inversion problem (Yilmaz, 1987). low frequency imaging reservoir characterization full waveform inversion seismic acquisition seg annual meeting...

... chemistry fatigue lives design curve crack growth rate piping design girth weld low frequency stress range pipeline endurance test cyclic loading frequency loading frequency corrosion inhibition seawater frequency upstream oil & gas specimen corrosion management cyclic softening...

... attenuated in complex subsalt environments (Regone, 2006; Fromyr et.al. 2008). In themselves they present new challenges in terms of survey design, acquisition and processing. Another important element of enhanced imaging is related to bandwidth and in particular the amount of low frequency energy we can...

... offsets instead of just wide azimuth at current offset configurations of 8 × 4 km. Current datasets are also lacking in low frequencies where the subsalt signal is strongest. So, the next step is to raise the WAZ technology to a new level by implementing a dual-coil acquisition design. This can enable...

... marine acquisition configuration, shallow sources and shallow cables increase the high-frequency content of the seismic data needed for resolution, but attenuate the low frequencies needed for deep structural imaging and seismic inversion. Towing shallow also makes the data more susceptible...

... the global analysis cut boundary loads and pressure loads on the outer shell were derived for the real and imaginary wave frequency conditions and for the mean plus low frequency condition in the 135 degree heading environment. Once the components of load to be applied to the local strake model were derived...

..., offsets, clearances, etc. low frequency deepwater position-mooring design upstream oil & gas safety factor format artificial intelligence line tension reliability analysis safety level strength probability subsea system frequency response notional probability american petroleum...

... model test frequency spectrum correlation subsea system otc 7146 calculation mooring system frequency dynamic tension upstream oil & gas dynamic tension turret prediction low frequency procedure fpso model test dynamic analysis wind force test result fpso tanker fatigue...

... method, as explained in the API RP, assumes the designer is working with computer gen- erated low frequency (long period) mooring tension spec- trums and computer generated high frequency (wave period) mooring tension spectrums. Each method com- bines the low frequency and wave frequency tension spec...

... ABSTRACT Open-water and in-tank theoretical predictions of the low frequency damping of four distinct structures are presented to demonstrate the sensitivity of the damping coefficients to tank wall influences and/or finite water depth effects. To include these effects, and to solve the open...

... theoretical prediction experimental programme upstream oil & gas amplitude low frequency wave equation offshore technology conference mooring system low frequency artificial intelligence barge coefficient barge model wave amplitude prediction wave drift subsea system tanker...

... angular accelerations. 7 vessel dynamic position (dp) computer signals:- surge, sway and yaw position errors, surge and sway dp force, target heading and yaw moment. A block diagram of the instrumentation system is given in Figure 2. frequency low frequency transfer function sway...

... low frequency transfer function model test forward speed computation natural frequency coefficient regular wave tanker surge motion wave drift force surge direction frequency quadratic transfer function wave-current interaction effect moored tanker equation OTe 5631 Wave...

...OTe 5456 Recent Developments in the Analysis of Wave Drift Forces, Low-Frequency Damping and Response by R.G. Standing, W.J. Brendling, and D. Wilson, British Maritime Technology Copyright 1987 Offshore Technology Conference This paper was presented at the 19th Annual OTe in Houston. Texas. ApriI27...

... ABSTRACT This paper is concerned with the development and application of the hydrodynamic theory required to provide theoretical predictions of low frequency damping. This necessitates development of forward speed dependent expressions for the mean second order forces and an improved...

... computer simulation oscillation simulation contribution coefficient wave drift force upstream oil & gas dynamic contribution drift force subsea system tanker equation low frequency moored vessel frequency total wave drift force formulation irregular wave resistance...