Search results

Jump to: navigation, search
  • ...d headed the research department that developed and manufactured the first digital well logging units in the Soviet Union. That research was the basis for his ...a government body where he was responsible for coordinating efforts in the transformation of geophysical enterprises to adapt to conditions imposed by a market econo
    5 KB (807 words) - 10:33, 6 May 2014
  • ...t location, source location, and cable compass readings. There are 8 to 12 digital compasses along a typical marine cable. Readings from these devices allow c ...se moveout correction and summing over the velocity axis. Let this inverse transformation be represented by the operator '''L'''. The transpose of this operator '''L
    279 KB (43,590 words) - 09:31, 29 August 2014
  • ...s'') allows us to transform the motion from frequency to time domain. This transformation is reversible; that is, the time-domain signal can be broken down (''analyz ...eved by the Fourier transform. In practice, the standard algorithm used on digital computers is the fast Fourier transform (FFT). Analysis of a time-dependent
    10 KB (1,555 words) - 15:43, 28 August 2014
  • ...d) is increased. Ultimately, if all the frequencies in the inverse Fourier transformation are included, then the resulting wavelet becomes a spike, as seen in Figure *[[Analog versus digital signal]]
    6 KB (781 words) - 15:47, 28 August 2014
  • ...nd Koehler, 1969, Taner, M. T. and Koehler, F., 1969, Velocity spectra — digital computer derivation and applications of velocity functions: Geophysics, 39, file:ch03_fig2-9.png|{{figure number|3.2-9}} Transformation of a synthetic CMP gather containing a single reflection event from offset
    4 KB (623 words) - 14:27, 18 September 2014
  • ...locity information from field data. Their approach is based on a wavefield transformation. The shot record first is transformed into the slant-stack domain. Fourier ...wavefield from midpoint-offset to midpoint-ray-parameter coordinates. This transformation is done by applying linear moveout and summing over the offset range for ea
    70 KB (10,953 words) - 15:05, 9 October 2014
  • ...and Treitel, 1973, Wang, R. J. and Treitel, S., 1973, The determination of digital Wiener filters by means of gradient methods: Geophysics, 38, 310–326.</re ...at achieving a particular interpretive goal. To clarify the objectives in digital processing, consider the properties of the quantity represented by a map fu
    278 KB (43,816 words) - 14:40, 10 September 2014
  • ...and Treitel, 1973, Wang, R. J. and Treitel, S., 1973, The determination of digital Wiener filters by means of gradient methods: Geophysics, 38, 310–326.</re ...at achieving a particular interpretive goal. To clarify the objectives in digital processing, consider the properties of the quantity represented by a map fu
    92 KB (14,896 words) - 17:33, 9 October 2014
  • ...at Microsoft Azure Global for Energy, enabling cloud adoption and digital transformation in Upstream oil and gas.
    2 KB (315 words) - 14:34, 21 February 2021
  • For digital functions (see problem 9.4), the integrals become sums: ...except when <math>(t-t_{0})=0</math>, where it equals <math>+1</math>. In digital notation (see problem 9.4) we write <math>\delta_{t}</math>, <math>\delta_{
    165 KB (25,021 words) - 14:02, 18 June 2018
  • == Beyond digital == ...geoscience literature reproducible. This means accessible, openly licensed digital data, open implementations of algorithms, and complete scientific transpare
    4 KB (603 words) - 16:09, 25 September 2018
  • ...publishing about them in the mid-90s. In 2019, in response to "the digital transformation of Oil and Gas" the [https://www.aapg.org/ AAPG], [https://seg.org SEG] & [
    17 KB (2,421 words) - 13:23, 4 December 2019
  • ''Homomorphic deconvolution'' (Sheriff and Geldart, 1995, 298) involves transformation into the ''cepstral domain'', the ''cepstrum'' <math>g^{*} (\zeta)</math> b Where <math>\leftrightarrow</math> denotes the Fourier transformation. In the cepstral domain the geophone input <math>g_{t} =e_{t} *\omega _{t}<
    13 KB (1,857 words) - 10:15, 16 July 2019
  • | name = Digital Imaging and Deconvolution: The ABCs of Seismic Exploration and Processing | title = Digital Imaging and Deconvolution: The ABCs of Seismic Exploration and Processing
    11 KB (1,528 words) - 10:21, 6 May 2021
  • | name = Digital Imaging and Deconvolution: The ABCs of Seismic Exploration and Processing | title = Digital Imaging and Deconvolution: The ABCs of Seismic Exploration and Processing
    11 KB (1,484 words) - 10:21, 6 May 2021
  • | name = Digital Imaging and Deconvolution: The ABCs of Seismic Exploration and Processing | title = Digital Imaging and Deconvolution: The ABCs of Seismic Exploration and Processing
    11 KB (1,515 words) - 10:25, 6 May 2021