... static correction method apparent velocity piedmont area seg international exposition reservoir characterization layer velocity static correction method first-arrival time application western china correction method inversion alluvial fan area direct wave upstream oil & gas...

... ABSTRACT The traditional F-K filtering performs interference suppression and signal enhancement based on the difference between the effective signal and the regular interference in the apparent velocity. However, in fact, for both gathers before and after NMO corrections, the regular...

... exposition channel decimation nyquist wavenumber annual meeting noise wavenumber decimation shot gather receiver channel line mark apparent velocity mean stack upstream oil & gas vertical seismic profile xiaomin zhao reservoir characterization dataset frequency 1 Channel Decimation...

... wavenumber frequency modeling & simulation high frequency data waveform inversion pef inversion claerbout full waveform inversion low frequency de-noising apparent velocity minimization problem spectrum noise frequency data stanford university Abma , R. , and J...

... to identify and separate P- and S-waves based on differences among polarization, propagation direction and apparent velocity of seismic waves in the domain of time-frequency-wave number (t-f-k), which is obtained by S transform (ST) and Fourier Transform (FT)jointly applying to a 2D seismic data (t-x...

... and a novel processing approach? : First Break , 32 , 95 – 101 . coherent noise emo summation apparent velocity eigenvalue true emo optimal microseismic data noise reservoir characterization seg seg international exposition summation structure-tensor analysis university annual...

... AM Location: 140 Presentation Type: ORAL seg seg international exposition shot gather receiver array imaging reservoir characterization noise supergrouped data land seismic data seismic data moveout deconvolution operator upstream oil & gas reflection apparent velocity...

... the traveltime tomography inversion of FAT, this diagnosis approach was applied again to the updated VTI-inversion model to ensure the velocity updating effort is on the right track. We used the Absolute and Relative Misfits (AM & RM) and apparent velocities to quantify the velocity model uncertainties...

... an electric signal in a porous formation due to seismoelectric conversions, but cannot induce any electric signal in metallic drill collars. The apparent velocity of the co-seismic seismoelectric signals is the acoustic wave velocity propagating in the porous formation. The seismoelectric measurements can...

... zoback coherent arrival reservoir characterization experiment sensor long period stanford university vertical array long duration seismic event noise apparent velocity lpld event sequence hydraulic fracturing plane hydraulic fracture stimulation Long Period, Long Duration Seismic Events...

... elimination amplitude compensation refraction seg seg denver 2010 deconvolution china compensation reservoir characterization seismic data equation exploration area mountain carbonate exploration area apparent velocity carbonate exploration area shallow layer formula upstream oil...

... z H t z H t z (1) 3. To determine the apparent velocities as a function of azimuth, we need to compute the velocity spectrum in a chosen depth interval. This can be done by computing the coherency of the seismic signal along a linear travel-time line t = t0+ z/v, where t0 is a reference time...

... to investigate the acoustic fields in the formation. Acoustic measurements record both waves reflected from an interface or a fracture and those propagating in the borehole. The frequency of the reflection is higher than that of the borehole waves, and the apparent velocity of the reflection is higher than the P...

...), to implement a four-step procedure to eliminate ground roll from seismic data. The first step uses an apparent velocity to define a zone to suppress ground roll, and the instantaneous average energy of the zone is calculated after low-pass filtering. The second step uses complex singular-value decomposition...

... a simple model of well deviation, which is designed to minimize potential corruption of actual data trends. We also provide quantitative quality control measures based on minimizing correlations between take-off angle and apparent velocity, and a quality check on the continuity of velocity between adjacent...

... reconstruct signal singular value decomposition coherence seismic wave field separation apparent velocity international exposition noise attenuation separation target signal reservoir characterization singular value seismic data svd upstream oil & gas geophysics valid signal...

... application polarization crosswell seismic data seismic data tube wave reservoir characterization horizontal component polarization direction wave field separation separation method geophysics apparent velocity international exposition orientation polarization rotation transform...

... focal mechanism envelope signal-to-noise ratio afk annual international meeting upstream oil & gas apparent velocity receiver mechanism microseismic event hydraulic fracturing international exposition waveform reservoir characterization passsive seismic data seg houston 2009...

... adaptive fk filter seg houston 2009 international exposition summation transfer function fk filter cross-correlation function apparent velocity enhance seismic interferometry signal seismic interferometry signal reservoir characterization wavelet receiver upstream oil & gas...

... of the direct raypath in the near-surface. correction apparent velocity reservoir characterization continuity upstream oil & gas pilot trace panel raypath interferometry seismic trace stanford exploration project report procedure reflection static correction geophysics interferometry...