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  • {{#category_index:I|instantaneous frequency}} ...e time derivative of [[Special:MyLanguage/Dictionary:instantaneous_phase|''instantaneous phase'']] relates the the centroid of the power spectrum of the seismic wav
    3 KB (387 words) - 22:47, 14 August 2018
  • {{#category_index:I|instantaneous frequency}} ...e time derivative of [[Special:MyLanguage/Dictionary:instantaneous_phase|''instantaneous phase'']] relates the the centroid of the power spectrum of the seismic wav
    3 KB (371 words) - 22:49, 14 August 2018
  • {{#category_index:I|instantaneous frequency}}
    3 KB (429 words) - 13:56, 29 November 2020

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  • ..., amplitude-based ones to stratigraphy and reservoir characterization, and frequency-based ones (while often not clearly understood) to stratigraphy and reservo ...trace attributes of envelope amplitude, instantaneous phase, instantaneous frequency, and apparent polarity (see [[Special:MyLanguage/Dictionary:complex-trace_a
    7 KB (961 words) - 15:01, 6 February 2018
  • ...mic attributes. In the space domain, "local" is sometimes used instead of "instantaneous". See Figure [[Special:MyLanguage/Dictionary:Fig_C-11|C-11]] y Taner ''et a === Instantaneous amplitude === <!--T:8-->
    6 KB (1,026 words) - 09:43, 10 August 2017
  • {{#category_index:F|frequency modulation (FM)}} ...d wave differs from the carrier frequency by an amount proportional to the instantaneous value of the modulating wave. The amplitude of the modulated wave is usuall
    433 bytes (58 words) - 14:46, 2 March 2017
  • {{#category_index:I|instantaneous frequency}} ...e time derivative of [[Special:MyLanguage/Dictionary:instantaneous_phase|''instantaneous phase'']] relates the the centroid of the power spectrum of the seismic wav
    3 KB (387 words) - 22:47, 14 August 2018
  • {{#category_index:I|instantaneous phase}} ..., Rock Solid Images Houston, Texas (published 2000)</ref> The equation for instantaneous phase can be viewed as:
    2 KB (250 words) - 18:20, 24 April 2019
  • {{#category_index:L|low-frequency shadow}} A region of lowered instantaneous frequency that may lie immediately under a hydrocarbon accumulation.
    232 bytes (27 words) - 23:49, 19 September 2017
  • ...uch as the complex amplitude, phase, instantaneous phase and instantaneous frequency.
    2 KB (282 words) - 12:19, 29 April 2017
  • ...in (<b>c</b>), instantaneous frequency in (<b>d</b>), and weighted average frequency as the dotted curve in (d). (<b>e</b>) Isometric diagram of a complex trace
    430 bytes (76 words) - 16:28, 20 December 2011
  • ...ated box provided a thrust proportional to the square of the instantaneous frequency and confined to the vertical direction. In vibrate position, the unit advan ...by causing the direct-coupled vibrator shaft to sweep through the desired frequency band. And in this model the gasoline engine was replaced by a shock-mounted
    28 KB (4,594 words) - 14:09, 17 October 2016
  • ...evaluation in a fractured carbonate oil reservoir: Predrill prediction of instantaneous shut-in pressure gradients," [[Heloise B. Lynn]], [[Walter S. Lynn|Walter L * 1994 "Effect of strain amplitude and frequency on compressional and shear wave velocities and amplitudes in sandstones," [
    9 KB (1,146 words) - 01:26, 29 September 2019
  • ...learn how to recognize different types of waves. For display purposes, an instantaneous type of gain (AGC) ([[gain applications]]) was applied to all 40 records. T Record 5 has some ground-roll energy, which is characterized by its low-frequency, high-amplitude appearance, particularly on short-offset traces. This kind
    21 KB (3,092 words) - 16:52, 7 October 2014
  • # The frequency content of the initial source signal changes in a time-variant manner as it ...flection amplitudes are confined to shallower times at increasingly higher frequency bands.
    9 KB (1,329 words) - 16:09, 28 August 2014
  • ...density and ''v'' is the compressional-wave velocity within the layer. The instantaneous value of seismic impedance for the ''k''th layer is given by The inverse of the seismic wavelet also can be computed in the frequency domain. By Fourier transforming equation ({{EquationNote|B-19}}), we get
    59 KB (9,331 words) - 17:26, 7 October 2014
  • ...1-D Fourier transform]]) is then used to remove noise at the high- and low-frequency end of the signal spectrum (Figure 1.5-22). ...g5-23.png|{{figure number|1.5-23}} The CMP stack as in Figure 1.5-22 after instantaneous AGC scaling.
    3 KB (373 words) - 14:23, 17 September 2014
  • ...field data examples]]); (e) and wide bandpass filtering to remove the high-frequency noise boosted by spiking deconvolution. Note that the autocorrelogram bette ...th the gathers from left to right in Figure 1.5-32. The horizontal axis is frequency in Hz and the vertical axis is two-way traveltime in s. Note from (a) that
    13 KB (1,868 words) - 14:29, 17 September 2014
  • # The instantaneous velocity ''dx''/''dt'' is never zero. ...want to express equation ({{EquationNote|C-13}}) in terms of the dominant frequency ''f'' of the wavelet. Start with the relation
    69 KB (11,212 words) - 10:58, 19 September 2014
  • ...ons, there is insufficient well control and the bands of the low- and high-frequency information derived from the seismic data do not overlap. In these cases, p ...ismic traces to get synthetic sonic logs implies a further lowering of the frequency content. A synthetic sonic log and a measured log can only be compared when
    6 KB (796 words) - 08:04, 7 October 2014
  • # Apply a frequency-space complex Wiener filter with unit-[[prediction lag]] (''f − x'' [[dec * [[Instantaneous attributes]]
    10 KB (1,380 words) - 18:25, 9 October 2014
  • Aside from the AVO attributes, the instantaneous attributes can be helpful in inferring reservoir parameters. When considere ...ncies. Therefore, the complex trace ''u''(''t'') does not contain negative frequency components.
    6 KB (866 words) - 14:43, 13 March 2017
  • ...its Fourier transform and will use that idea to generate the well-known ''instantaneous-phase'' poststack attribute. We will also check how close to zero phase our ...magnitude, which tells us about the distribution of signal energy through frequency. However, every signal also has a phase spectrum, and the phase encodes the
    9 KB (1,493 words) - 16:37, 16 February 2016

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