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Keywords: static shift
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Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3584660
.... The joint inversion of active-source and natural-field EM data Daniel Sattel*, EM Solutions, Ken Witherly, Condor Consulting Summary often referred to as a static shift problem and efforts are made to correct the data during the processing or inversion Active-source and natural-field EM data differ...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583898
... intelligence static shift geophysics residual static solution residual static problem static solution Derive residual statics solution using a high-resolution neural network Xudong Duan*, Jie Zhang, University of Science and Technology of China (USTC) Summary 2016; Gao and Zhang; Duan and Zhang, 2017...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3428182
... in settings with minimal or gradual lateral variability. A low-cut wavenumber filter attenuates the horizontal arrivals while retaining the diffraction amplitudes. Implementation of a static shift can further improve the alignment of direct arrivals and efficiency of the slope filter. This shift is trace...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215402
... alternative encoding strategies to the conventional polarity encoding in time domain: In the first, we encode each shot applying a random static shift; In the second, we encode each shot applying a random phase rotation of the seismic wavefield. The velocity updates are carried out with the restarted L-BFGS...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17680359
... function upstream oil & gas optimization problem reservoir characterization matrix optimal solution possible solution automatic global optimal estimation stack power seg seg international exposition paradigm cdp constraint equation algorithm formulation static shift Clausen...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-1621
... Summary The static shift caused by near-surface conductors poses a significant challenge in magnetotelluric (MT) inversion. We present a technique to remove the static shifts in MT data by using the equivalent source technique. This method is based on the assumption that all the data...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2013 SEG Annual Meeting, September 22–27, 2013
Paper Number: SEG-2013-1453
...Processing seismic data in the presence of residual statics Aaron Stanton*, Nasser Kazemi, and Mauricio D. Sacchi, Department of Physics, University of Alberta SUMMARY Many common processing steps are degraded by static shifts in the data. The effects of static shifts are analogous to noise...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2011 SEG Annual Meeting, September 18–23, 2011
Paper Number: SEG-2011-3638
... ABSTRACT Projection filtering has been used for many years in seismic processing as a tool to extract a meaningful signal out of noisy data. We show that its effectiveness reaches a limit when seismic events are affected by static shifts. Such shifts degrade the lateral coherency of the data...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2010 SEG Annual Meeting, October 17–22, 2010
Paper Number: SEG-2010-0774
... static shift seg seg denver 2010 geophysics reference model amplitude equivalent source technique reservoir characterization upstream oil & gas multi-component csem data electric field frequency equation denoised data csem data noise equivalent source layer objective function...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2007 SEG Annual Meeting, September 23–28, 2007
Paper Number: SEG-2007-0544
... Summary All electromagnetic, EM, methods, including the MTEM method, are susceptible to “static shifts”. We first discuss the nature of the shifts in MTEM data by reference to 3D synthetic modelling. We then show that impulse responses, normalized by the peak values provide a dataset which has...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2007 SEG Annual Meeting, September 23–28, 2007
Paper Number: SEG-2007-0683
... of 10 ohm·m and the width of 2km. inversion structure interpretation deep structure study basement static shift correspond resistivity upstream oil & gas target formation static correction topography resistivity map frequency 10hz mt survey mt data complex area algorithm deep...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2006 SEG Annual Meeting, October 1–6, 2006
Paper Number: SEG-2006-1391
... proved to be effective in correcting the conventional deep seismic image using either the simple statics shift or wave-equation datuming. seismic data reservoir characterization annual international meeting upstream oil & gas seg tariq alkhalifah saudi aramco information steeple...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2005 SEG Annual Meeting, November 6–11, 2005
Paper Number: SEG-2005-2029
.... Synthetic elastic examples show that PS can clearly delineate the upper and lower salt boundaries of a realistic salt body model. Results show that PS is noticeably more accurate than the conventional migration method in the presence of static shifts and/or migration velocity errors. However...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2005 SEG Annual Meeting, November 6–11, 2005
Paper Number: SEG-2005-0617
... Summary The magnetotelluric static shift is a distortion effect that affects only the apparent resistivity data but not the phase. Correction for that distortion is then critical to determine the “true” resistivities and depth of the model in the inversion process. We present in this paper our...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2004 SEG Annual Meeting, October 10–15, 2004
Paper Number: SEG-2004-0167
... example. static shift intensity processing sequence azimuthal avo wide-azimuth processing orientation variation amplitude deconvolution upstream oil & gas anisotropy october 2004 impedance inversion wide-azimuth data azimuthal anisotropy analysis cynthia gomez reservoir...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2003 SEG Annual Meeting, October 26–31, 2003
Paper Number: SEG-2003-1885
... Summary We develop a novel procedure to solve the long-standing problem of water column statics. Our procedure consists of automatic picking of the relative static shift between the sail lines, and solving this problem as a global nonlinear inversion problem. Like most inversion problems...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2002 SEG Annual Meeting, October 6–11, 2002
Paper Number: SEG-2002-1137
... approach that can handle severe topography. assumption exposition conventional pre-stack time migration upstream oil & gas kpstm reservoir characterization elevation salt lake city geophysics static shift pre-stack time migration berryhill rugged topography severe topography...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2001 SEG Annual Meeting, September 9–14, 2001
Paper Number: SEG-2001-1455
... resistivity data pellerin sørensen department static shift dataset louise pellerin resistivity inversion upstream oil & gas mci reservoir characterization Mutually Constrained Inversion (MCI) of Electrical and Electromagnetic Data Esben Auken*, Louise Pellerin and Kurt I. Sørensen Department...
Proceedings Papers
Three-dimensional Inversion of Magnetotelluric Data At the Bajawa Geothermal Field, EasternIndonesia
Publisher: Society of Exploration Geophysicists
Paper presented at the 2001 SEG Annual Meeting, September 9–14, 2001
Paper Number: SEG-2001-1497
... Summary Three-dimensional (3-D) magnetotelluric (MT) inversion was applied to field data obtained in a geothermal area in Indonesia. The inversion scheme is based on the linearized least-squares method with smoothness regularization. In addition to subsurface resistivities, static shifts were...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 1999 SEG Annual Meeting, October 31–November 5, 1999
Paper Number: SEG-1999-2009
... ABSTRACT No preview is available for this paper. sensor location additional processing step static shift upstream oil & gas platform cable offshore multicomponent seismic hydrophone data reservoir characterization compartment receiver effort time-lapse observation repeat...
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