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William Dragoset

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Proceedings Papers

Paper presented at the 2012 SEG Annual Meeting, November 4–9, 2012
Paper Number: SEG-2012-0321
... separation westerngeco information maximization algorithm reconstruction subtraction dragoset multiple prediction Adaptive multiple separation based on information maximization Kuang-Hung Liu and William H. Dragoset, WesternGeco Summary We are interested in the problem of separating primary and...
Proceedings Papers

Paper presented at the 1988 SEG Annual Meeting, October 30–November 3, 1988
Paper Number: SEG-1988-0075
... oil & gas doppler factor correction ship speed traveltime Marine Vibrators and the Doppler Effect DA 2.1 William If. Dragoset, Jr, Western Atlas International Inc. SUMMARY Marine seismic data acquired with a moving vibrator suffer phase dispersion caused by Doppler shifting of the source...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 1980
Paper Number: OTC-3808-MS
...OTC 3808 DATA ENHANCEMENT FROM A 486 - CHANNEL STREAMER by William H. Dragoset and Kenneth L. Larner, Western Geophysical Co. ©Copyrlght 1980 Offshore Technology Conference This paper was presented at the 12th Annual OTC In Houston, Tex., May 5-8, 1960. The material Is subject to correction by the...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13969709
... dragoset srme reduction modeling error distance reservoir characterization azimuth data subtraction gsmp azimuth migration upstream oil & gas interpolation input location error seg seg international exposition geometry input trace annual international meeting Dragoset , B...
Proceedings Papers

Paper presented at the 1998 SEG Annual Meeting, September 13–18, 1998
Paper Number: SEG-1998-1230
... ABSTRACT No preview is available for this paper. algorithm upstream oil & gas multiple attenuation algorithm noise multiple suppression prediction surface multiple dragoset equation surface multiple attenuation reflection filter coefficient field data cross dip...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17680141
... survey is evenly sampled for different azimuths and offsets. Moreover, the trace density becomes lower and the distribution is more irregular for the large offsets. SRME, a data-driven method, does not require any subsurface knowledge in the process of surface multiple model prediction (Dragoset et al...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17789671
... ray Dragoset , B. , E. Verschuur , I. Moore , and R. Bisley , 2010 , A perspective on 3D surface-related multiple elimination : Geophysics , 75 , no. 5 , 75A245 – 75A261 , 10.1190/1.3475413 . Monk , D. J. , 2010 , Fresnel-zone binning...
Proceedings Papers

Paper presented at the 1995 SEG Annual Meeting, October 8–13, 1995
Paper Number: SEG-1995-1389
... ABSTRACT No preview is available for this paper. screw noise geophysical application geophone noise anc adaptive-noise cancellation bill dragoset filter coefficient reflection signal equation coefficient frequency upstream oil & gas secondary input power-line...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 1995
Paper Number: OTC-7655-MS
... secondary input noise anc coefficient screw noise seismic data western geophysical co reservoir characterization primary input filter coefficient OTC 7655 Geophysical Applications of Adaptive Noise Cancellation B. Dragoset, Western Geophysical Co. Cepyright 1995, Offshore Technology Conference...
Proceedings Papers

Paper presented at the 1991 SEG Annual Meeting, November 10–14, 1991
Paper Number: SEG-1991-1642
... stress information nonuniqueness interpretation artificial intelligence vertical fracture birefringence acquisition geometry Workshop 6 - Geophysical Methods of Fracture Detection and Estimation ~rganirer(s): John H. Queen and William D. Rizer, Conoco Inc. It has long been recognized that...
Proceedings Papers

Paper presented at the SPE Gas & Oil Technology Showcase and Conference, October 21–23, 2019
Paper Number: SPE-198594-MS
... , 21 , 787 – 790 . 29. van Dedem , E.J. and Verschuur , D.J. , 2001 , 3D surface multiple prediction using sparse inversion: SEG Expanded Abstracts , 1285 – 1288 . 30. Weglein , William H. Dragoset , Daniel Ebrom , Multiple attenuation, (SEG - Geophysics reprint series...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17741988
... linearly slanted (Ray and Moore (1982); Dragoset and William (1991)) or depth-variable streamer (Soubaras et al. (2010 Motivated by progress in acquisition, different deghosting the- ories have developed. A more general and physically complete method of deghosting was provided using Green s theorem...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13956004
... and de- signed specialized acquisition like single linearly slanted (Ray and Moore (1982); Dragoset and William (1991)) or depth- variable streamer (Soubaras et al. (2010 Because the streamer is nonflat, notches diverse in time from one end of the streamer to the other. Therefore the ghost can be...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-1607
... slope tomography: 83rd Annual International Meeting, SEG, Expanded Abstracts, 4811 4815. Han, W., and S. Xu, 2011, High resolution velocity model for imaging complex structures: 73rd Conference & Exhibition, EAGE, Extended Abstracts, B010. Li, H., J. Kapoor, N. Moldoveanu, and B. Dragoset, 2009, The...
Proceedings Papers

Paper presented at the 1996 SEG Annual Meeting, November 10–15, 1996
Paper Number: SEG-1996-0021
...ACQ1.6 The Dual-Sensor ocean-bottom cable method: comparative geophysical attributes, quantitative geophone coupling analysis and other recent advances Fred J. Barr*, Josef Paffenholz and William Rabson, Western Geophysical Summary With the ocean-bottom cable (OBC) method, the detectors of seismic...
Proceedings Papers

Paper presented at the 2005 SEG Annual Meeting, November 6–11, 2005
Paper Number: SEG-2005-2095
...- nanen for their invaluable suggestions and assistance. William Dragoset (WesternGeco) is thanked for his suggestions of the models of the receiver arrays. We are grateful to the support from the sponsors of M-OSRP and the support of NSF-CMG award number DMS-0327778. References Amundsen, L., Sten, T.R...
Proceedings Papers

Paper presented at the 2005 SEG Annual Meeting, November 6–11, 2005
Paper Number: SEG-2005-2080
... hyperbolic curvatures in the search for the Fresnel zones of the sparse crossline contributions. The method is recommended for situations where crossline structures vary gently. Moore and Dragoset (2004) have shown some examples of fully computed crossline contribution panels where it was clear that the...
Proceedings Papers

Paper presented at the 2003 SEG Annual Meeting, October 26–31, 2003
Paper Number: SEG-2003-0865
... attenuation techniques to dual-sensor seismic data has been previously discussed by Dragoset (1995). The author utilized a Widrow-Hoff LMS method (Widrow et al., 1975) with (for each receiver pair) the hydrophone trace as one input and the geophone trace as the other. The hydrophone signal was converted to an...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2000
Paper Number: OTC-12048-MS
... feathering, and out-of-plane reflections and diffractions. Sub-salt imaging using wide-tow 3-D data Dragoset et al.6 presented a pragmatic extension of the 2-D algorithm for modeling and attenuation of free-surface multiples to 3-D data. The main steps of the method involve interpolation of the 3-D data to...
Proceedings Papers

Paper presented at the 1992 SEG Annual Meeting, October 25–29, 1992
Paper Number: SEG-1992-0844
... amplitudes of the seismogram of Figure la, and Figure lc shows the normaliied P-P instantaneous amplitudes. The AVO response for the P-P reflection in Figure la, b, and c is representative of a class- 1 gas-sand reflection (Rutherford and Williams, 1989). The normalized instantaneous amplitudes of Figure lc...

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