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hyperbolic velocity filters

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Journal Article
Journal: Geophysics
Published: 01 May 1990
Geophysics (1990) 55 (5): 619–625.
...Alan R. Mitchell; Panos G. Kelamis Abstract Time and offset varying velocity filtering can be achieved by limiting the data input to forward tau-p transforms. This limiting procedure, called hyperbolic velocity filtering (HVF), suppresses transform-related artifacts as well as coherent...
Journal Article
Journal: Geophysics
Published: 01 January 1986
Geophysics (1986) 51 (1): 20–33.
...Ilkka Noponen; Joe Keeney Abstract By limiting data input to the forward-inverse tau-p transform pair, velocity filtering which varies with time and offset can be achieved. The limiting procedure, called hyperbolic velocity filtering, suppresses coherent noise while retaining reflection events...
Journal Article
Journal: Geophysics
Published: 01 October 1998
Geophysics (1998) 63 (5): 1496–1506.
... of the versatile noise suppression offered by a tau -p domain processing stream. By separating the strong linear events at the far offsets, it is possible to stack a larger portion of the target zone reflections, provided hyperbolic velocity filtering (HVF) is applied to suppress the transform artifacts...
Image
<span class="search-highlight">Hyperbolic</span> <span class="search-highlight">velocity</span> <span class="search-highlight">filtering</span> applied to a sampling of shot gathers from li...
Published: 01 January 2000
F IG . 6. Hyperbolic velocity filtering applied to a sampling of shot gathers from line A. Gathers are shown before (left) and after (right) velocity filtering. The CMP numbers refer to the last trace in each shot gather. See Figure 5 for filter parameters. Velocity filtering enhances
Image
<span class="search-highlight">Hyperbolic</span> <span class="search-highlight">velocity</span> <span class="search-highlight">filtering</span> tests with synthetic, 24- channel shot gather...
Published: 01 January 2000
F IG . 5. Hyperbolic velocity filtering tests with synthetic, 24- channel shot gathers. Source–receiver offsets match those of the field gathers. Trapezoidal passband of zero-phase source wavelet: 15, 30, 80, and 100 Hz. Ray parameter pass range: −0.1–0.58 s/km; ray parameter increment: 0.02 s/km
Journal Article
Journal: Geophysics
Published: 01 February 1997
Geophysics (1997) 62 (1): 195–205.
... velocity filtering allow the production of high-quality slant stacks of common-midpoint data that are relatively free of artifacts. These techniques can not be used on common geophone data because of the less predictive nature of data in this domain. However, unlike plane-wave data, slant stacks over...
Journal Article
Journal: Geophysics
Published: 01 November 1989
Geophysics (1989) 54 (11): 1455–1465.
... and near-surface filtering at the shot and geophone positions. An optimized inversion of the combined modeling equations for hyperbolic traveltimes and convolutional wavelets makes explicit any interdependence and nonuniqueness in these two sets of parameters.I first estimate stacked traces that best model...
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CMP stacks for line A. (a) No statics applied. First arrivals and ground ro...
Published: 01 January 2000
sorting and stacking. (d) Same as (b), except for applying a hyperbolic velocity filter to shot gathers before CMP sorting and stacking. See Figure 5 for a summary of filter parameters. Much of the coherent energy in the stack is from smearing of coherent noise (Figures 5a and 5b ) and filtering
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Application of our modified  FVM  and new prestack line‐drawing migrations ...
Published: 01 February 2013
linear moveout filter. (b) Prestack line‐drawing migration with application of reverse linear moveout filter, normal hyperbolic moveout filter, and dip filter. The results are presented as a line‐drawing density image. (c) Migrated line drawings are superposed on the velocity model.
Journal Article
Journal: Geophysics
Published: 01 January 2002
Geophysics (2002) 67 (2): 644–656.
... and Beresford, 1997 ). By applying some limits on the velocity range used during the LRT, a hyperbolic velocity filter can be used to attenuate or filter out truncation artifacts ( Tatham, 1989 ). Inspired by our experience with the nonlinear RT, we looked for a method to improve the continuity...
FIGURES | View All (8)
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Comparison between Sigsbee 2A stacking <span class="search-highlight">velocity</span> models: (a) <span class="search-highlight">velocity</span> model ...
Published: 16 March 2018
Figure 8. Comparison between Sigsbee 2A stacking velocity models: (a) velocity model derived from the automated, hyperbolic stacking procedure, (b) velocity model shown in (a) smoothed by a median filter, and (c) velocity model derived from the image-matching-based stacking approach. Velocity
Image
CMP numbers 800, 1100, 1400, and 1700 from the Mobil AVO data. <span class="search-highlight">Hyperbolic</span> R...
Published: 05 September 2007
Figure 1. CMP numbers 800, 1100, 1400, and 1700 from the Mobil AVO data. Hyperbolic Radon filter applied to suppress near-water-velocity events, also 3 - 8 - 3 - 45 - Hz bandpass filter and 300 - m near-offset linear taper.
Journal Article
Journal: Geophysics
Published: 01 January 2001
Geophysics (2001) 66 (5): 1504–1514.
... is a discrete approximation to a Dirac delta function whose singularity tracks along a hyperbola determined by the migration velocity. For variable velocity, the migration filter has significant energy between hyperbolic trajectories determined by the minimum and maximum instantaneous velocities. The full...
FIGURES | View All (6)
Journal Article
Journal: Geophysics
Published: 01 January 2000
Geophysics (2000) 65 (5): 1388–1401.
...F IG . 6. Hyperbolic velocity filtering applied to a sampling of shot gathers from line A. Gathers are shown before (left) and after (right) velocity filtering. The CMP numbers refer to the last trace in each shot gather. See Figure 5 for filter parameters. Velocity filtering enhances...
FIGURES | View All (10)
Journal Article
Journal: Geophysics
Published: 01 December 1985
Geophysics (1985) 50 (12): 2727–2741.
... into what might be called a velocity space: a two-dimensional set of points indexed by time and velocity. Examination of data in velocity space is used for analysis of subsurface velocities and filtering of undesired coherent events (e.g., multiples), but the filtering step is useful only if an approximate...