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Keywords: low frequency
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Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27803-MS
... 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...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2015
Paper Number: OTC-25688-MS
...OTC-25688-MS Low Frequency Seismic Acquisition Innovations Approaching One Hertz Mark Meier, Kyle Lewallen, Jose Otero, Steve Heiney, and Tom Murray, ExxonMobil Upstream Research Company Copyright 2015, Offshore Technology Conference This paper was prepared for presentation at the Offshore...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2015
Paper Number: OTC-25668-MS
... spectrum reservoir characterization wavelet inversion result offshore technology conference conventional inversion low frequency broadband seismic algorithm broadband inversion low frequency trend interpretation information well control seismic data seismic inversion frequency...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2015
Paper Number: OTC-25749-MS
... 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 processing, and if required reprocessing, and further seismic data conditioning are also a prerequisite to make sure the S/N...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2014
Paper Number: OTC-25241-MS
... 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...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2011
Paper Number: OTC-21510-MS
... increases. This is a potential problem for applications where operational fatigue 2 OTC 21510 loading is expected to be of very low frequency. Common design curves, for steel exposed to seawater for instance, such as those in BS 7608 [1], DNV-RP-C203 [2] or BS 7910 [3] are only appropriate at moderate...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 3–6, 2010
Paper Number: OTC-20926-MS
... 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...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 3–6, 2010
Paper Number: OTC-20935-MS
... 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...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2007
Paper Number: OTC-18531-MS
... 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 to environmental noise...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2005
Paper Number: OTC-17300-MS
... hole subsea system upstream oil & gas pressure relief hole strake elevation load condition load measurement fpso standard deviation strake model fatigue damage strake plate bottom strake plate otc 17300 pressure difference pressure load low frequency net pressure floating...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2001
Paper Number: OTC-13269-MS
..., 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...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 3–6, 1993
Paper Number: OTC-7146-MS
... 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...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 1992
Paper Number: OTC-6966-MS
... 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...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 7–10, 1990
Paper Number: OTC-6223-MS
... 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...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 1989
Paper Number: OTC-6136-MS
... 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...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 1988
Paper Number: OTC-5631-MS
... ABSTRACT A tanker moored in irregular head waves in combination with or without current performs large amplitude low frequency surge motions. Due to low frequency motions in combination with or, without the current field the second order wave, drift forces will be a function of the tanker...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 1988
Paper Number: OTC-5824-MS
... 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...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 27–30, 1987
Paper Number: OTC-5456-MS
...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...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 1986
Paper Number: OTC-5175-MS
... 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...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 1986
Paper Number: OTC-5176-MS
...aTe 5176 Evaluation of Low-Frequency Wave Damping by G.E. Hearn and K.C. Tong, U. of Newcastle upon Tyne Copyright 1986 Offshore Technology Conference _ _ __ This paper was presented at lhe 18th Annual GTC in Houston, Texas, May 5-8, 1986. The material is subject to correction by the author...

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