... wells. Thus, the 3D fast sweeping method (FSM) is implemented to simulate first-arrival times at each azimuthal receiver mounted around the logging tool in HA/HZ wells. Simulated wavefronts and first-arrival times are verified with 3D finite-difference time-domain (FDTD) simulations. Calculated apparent...

... (Wong et al., 2009). To obtain a credible near-surface velocity model via full In the data preparation stage, we also mute field data with waveform inversion (FWI) requires an appropriate initial windows surrounding the picked first-arrival times. After velocity model. Here, we present a two-step method...

... 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...

... recorded common-shot gathers at 5-m intervals along six seismic line traverses using an explosive source (a buffalo gun with six 76-mm magnum shells) and a receiver spread with 48 50-Hz vertical geophones at 5-m intervals. We analyzed the first-arrival times picked from the shot gathers by nonlinear...

... tomography to first-arrival times picked from all offsets. Finally, prestack depth migration of shot gathers from a floating datum that is a close representation of the topography was performed to generate the subsurface image in depth. migration reservoir characterization seismic data topography...

... seismic section soil column seismic data earthquake engineering seismic survey reservoir characterization line traverse inversion engineering s-wave velocity first-arrival time municipal area upstream oil & gas maximum acceleration geophysics traveltime tomography miller A Case...

... system salt lake city channel iron upstream oil & gas crosstalk acquisition device least-square solution radial first-arrival time wavefield geophone single-component filter receiver unit seismic data traveltime Analysis of an automated three-component shallow seismic acquisition...

... ABSTRACT No preview is available for this paper. upstream oil & gas algorithm initial velocity model crosswell data traveltime inversion velocity model reservoir characterization tvsc approach wavefield first-arrival time inversion result blakeslee interwell velocity...

... ABSTRACT No preview is available for this paper. reflection california normal fault cinder cone fault plane depth migration first-arrival time depth imaging geometry pullammanappallil louie upstream oil & gas serpa velocity model death valley basin extension...

... ABSTRACT No preview is available for this paper. traveltime flank image two-dimensional model study first-arrival time reservoir characterization aplanatic mapping mapping indentation ray-tracing method indentation aplanatic surface overhang receiver salt flank exxon...

... ABSTRACT No preview is available for this paper. heterogeneity line 1 first-arrival time reflection reservoir characterization upstream oil & gas cheadle velocity model mojave segment migration san andreas seismic inversion 2 subsurface geometry pullammanappallil...

... ABSTRACT No preview is available for this paper. velocity model frequency component traveltime first-arrival time anomaly perturbation parameterization derivative coefficient raypath simmons artificial intelligence velocity field data misfit inversion upstream oil...