Browse > Article
http://dx.doi.org/10.7582/GGE.2016.19.4.220

Broadband Processing of Conventional Marine Seismic Data Through Source and Receiver Deghosting in Frequency-Ray Parameter Domain  

Kim, Su-min (Department of Petroleum Resources Technology, University of Science and Technology (UST))
Koo, Nam-Hyung (Department of Petroleum Resources Technology, University of Science and Technology (UST))
Lee, Ho-Young (Petroleum and Marine Division, Korea Institute of Geoscience and Mineral Resources (KIGAM))
Publication Information
Geophysics and Geophysical Exploration / v.19, no.4, 2016 , pp. 220-227 More about this Journal
Abstract
Marine seismic data have not only primary signals from subsurface but also ghost signals reflected from the sea surface. The ghost decreases temporal resolution of seismic data because it attenuates specific frequency components. For eliminating the ghost signals effectively, the exact ghost delaytimes and reflection coefficients are required. Because of undulation of the sea surface and vertical movements of airguns and streamers, the ghost delaytime varies spatially and randomly while acquiring seismic data. The reflection coefficient is a function of frequency, incidence angle of plane-wave and the sea state. In order to estimate the proper ghost delaytimes considering these characteristics, we compared the ghost delaytimes estimated with L-1 norm, L-2 norm and kurtosis of the deghosted trace and its autocorrelation on synthetic data. L-1 norm of autocorrelation showed a minimal error and the reflection coefficient was calculated using Kirchhoff approximation equation which can handle the effect of wave height. We applied the estimated ghost delaytimes and the calculated reflection coefficients to remove the source and receiver ghost effects. By removing ghost signals, we reconstructed the frequency components attenuated near the notch frequency and produced the migrated stack section with enhanced temporal resolution.
Keywords
ghost; ghost delaytime; sea surface reflection coefficient; ghost notch; broadband seismic;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Jayaram, V., Copeland, D., Ellinger, C., Sicking, C., Nelan, S., Gilberg, J., and Carter, C., 2015, Receiver deghosting method to mitigate f-k transform artifacts: A non-windowing approach, 85th Ann. Internat. Mtg., Soc. Expl. Geophys., Expanded Abstracts, 4530-4534.
2 Jovanovich, D. B., Sumner, R. D., and Akins-Easterlin, S. L., 1983, Ghosting and marine signature deconvolution: A prerequisite for detailed seismic interpretation, Geophysics, 48, 1468-1485.   DOI
3 Koo, N. H., Shin, C., Min, D. J., Park, K. P., and Lee, H. Y., 2011, Source estimation and direct wave reconstruction in Laplace-domain waveform inversion for deep-sea seismic data, Geophysical Journal International, 187, 861-870.   DOI
4 Liu, L., and Lu, W., 2016, Adaptive f-k deghosting method based on non-Gaussianity, Journal of Applied Geophysics, 127, 14-22.   DOI
5 Longuet-Higgins, M. S., 1952, On the statistical distributions of the heights of sea waves, J. Mar. Res., 11, 245-266.
6 Perz, M. J., and Masoomzadeh, H., 2014, Deterministic marine deghosting: tutorial and recent advances, GeoConvention 2014: FOCUS, 1-6.
7 Rickett, J. E., D. J. van Manen, P. Loganathan, and Seymour, N., 2014, Slanted-streamer data adaptive deghosting with local plane waves, 76th EAGE Conference and Exhibition, EAGE, Extended Abstracts.
8 Carlson, D. H., Long, A., Sollner, W., Tabti, H., Tenghamn, R., and Lunde, N., 2007, Increased resolution and penetration from a towed dual-sensor streamer, First Break, 25, 71-77.
9 Cohen, J. K., and Stockwell, Jr. J. W., 2015, CWP/SU: Seismic Unix Release No. 44: an open source software package for seismic research and processing, Center for Wave Phenomena, Colorado School of Mines.
10 Ferber, R., and Beasley, C. J., 2014, Simulating ultra-deep-tow marine seismic data for receiver deghosting, 76th EAGE Conference and Exhibition, EAGE, Extended Abstracts.
11 Ghosh, S. K., 2000, Deconvolving the ghost effect of the water surface in marine seismics, Geophysics, 65, 1831-1836.   DOI
12 Soubaras, R., 2012, Pre-stack deghosting for variable-depth streamer data, 74th EAGE Conference and Exhibition incorporating EUROPEC, EAGE and SPE, Extended Abstracts.
13 Tolstoy, I., and Clay, C. S., 1966, Ocean acoustics, McGraw-Hill.
14 Wang, P., and Peng, C., 2012, Premigration deghosting for marine towed streamer data using a bootstrap approach, 82th Ann. Internat. Mtg., Soc. Expl. Geophys., Expanded Abstracts, 1-5.
15 White, R. E., 1988, Maximum kurtosis phase correction, Geophysical Journal International, 95, 371-389.   DOI
16 Williams, R. G., and Pollatos, J., 2012, Signal to noise-the key to increased marine seismic bandwidth, First Break, 30, 101-105.
17 Zhang, Z., Wu, Z., Wang, B., and Ji, J., 2015, Time variant deghosting and its applications in WAZ data, 85th Ann. Internat. Mtg., Soc. Expl. Geophys., Expanded Abstracts, 4600-4604.
18 Hardwick, A., Charron, P., Masoomzadeh, H., Aiyepeku, A., Cox, P., and Laha, S., 2015, Accounting for sea surface variation in deghosting a novel approach applied to a 3D dataset offshore west Africa, 85th Ann. Internat. Mtg., Soc. Expl. Geophys., Expanded Abstracts, 4615-4619.
19 Grion, S., Telling, R., and Barnes, J., 2015, Deghosting by kurtosis maximization, 77th Annual International Conference and Exhibition, EAGE, Extended Abstracts.
20 Hardwick, A., Masoomzadeh, H., Gromotka, J., Cox, P., and Gilbert, R., 2014, Broadband processing in the Norwegian Barents sea-practical aspects of deghosting in a challenging marine environment, 84th Ann. Internat. Mtg., Soc. Expl. Geophys., Expanded Abstracts, 4223-4227.