Geophone noise attenuation in the complex wavelet domain for wavefield separation of ocean bottom seismic data

Liang, H., Zhang, H.Z. and Zhang, D.L., 2022. Geophone noise attenuation in the complex wavelet domain for wavefield separation of ocean bottom seismic data. Journal of Seismic Exploration, 31: 341-356. For ocean bottom seismic data processing, hydrophone and vertical geophone are combined to separate wavefields into upgoing and downgoing components. However, vertical geophone usually records strong shear noise (also known as V; noise), which can significantly contaminate the results of wavefield separation and degrade image quality. In this paper, we propose a workflow to attenuate geophone noise for wavefield separation of ocean bottom seismic data. The workflow includes three steps: (1) calibration of geophone data against hydrophone data; (2) combination of calibrated geophone and hydrophone data to perform initial decomposition of upgoing and downgoing waves; (3) using hydrophone data and the downgoing wavefields from initial decomposition to perform enhanced wavefield separation in the dual-tree complex wavelet domain. The enhanced wavefield separation is achieved by thresholding the amplitude ratio of the downgoing wavefields from initial decomposition and hydrophone data in the complex wavelet domain. The proposed method is demonstrated on both synthetic and field data.
- Ball, V. and Corrigan, D., 1996. Dual-sensor summation of noisy ocean-bottom data.
- Expanded Abstr., 66th Ann. Internat. SEG Mtg., Denver: 28-31.
- Barr, F.J. and Sanders, J.I., 1989. Attenuation of water-column reverberations usingpressure and velocity detectors in a water-bottom cable. Expanded Abstr., 59th Ann.Internat. SEG Mtg., Dallas: 653-656.
- Brittan, J. and Starr, J., 2003. Applications of adaptive noise attenuation to dual sensorseismic data. Expanded Abstr., 73rd Ann. Internat. SEG Mtg., Dallas: 865-868.
- Brunelliére, J., Caprioli, P., Grion, S., Tilling, D., Amundsen, L. and Aronsen, H., 2004.
- Surface multiple attenuation by up-down wavefield deconvolution: An OBC casestudy. Expanded Abstr., 74th Ann. Internat. SEG Meeting, Calgary, Alberta: 849-852.
- Craft, K., and Paffenholz, J., 2007. Geophone noise attenuation and wavefield separationusing multidimensional decomposition technique. Expanded Abstr., 77th Ann.Internat. SEG Mtg., San Antonio: 2630-2634.
- Jeong, W. and Tsingas, C., 2019. A de-noising methodology for multi-component seafloornodal geophones. Extended Abstr.,8 1st EAGE Conf., London: 1-5.
- Liang, H. and Zhang, H., 2019. Geophone noise attenuation after dual sensor summationfor ocean bottom data in the wavelet domain, Geoconvention, Extended Abstr., 1-4.
- Melbs, A.H.S., Robertsson, J.O. and van Manen, D.J., 2002. PZ calibration by applying theequation of motion to critically refracted waves. Expanded Abstr., 72nd Ann. Internat.SEG Mtg., Salt Lake City: 1030-1033.
- Muijs, R., Robertsson, J.O. and Holliger, K., 2007. Data-driven adaptive decomposition ofmulticomponent seabed recordings: Application to shallow-water data from the NorthSea. Geophysics, 69(5): 1329-1337.
- Paffenholz, J., Shurtleff, R., Hays, D. and Docherty, P., 2006b. Shear wave noise on OBS
- Vz data - Part I, Evidence from the field. Extended Abstr., 68th EAGE Conf.,Vienna: B046.
- Paffenholz, J., Docherty, P., Shurtleff, R. and Hays, D., 2006a. Shear wave noise on OBS
- Vz data - Part II, Elastic Modeling of Scatterers in the Seabed. Extended Abstr., 68thEAGE Conf., Vienna: B047.
- Poole, G., Casasanta, L. and Grion, S., 2012. Sparse t-p Z-noise attenuation for ocean-bottom data. Expanded Abstr., 82nd Ann. Internat. SEG Mtg., Las Vegas: 1-5.
- Ren, Y., Yang, C., Degel, T. and Liu, Z., 2020. Vz noise attenuation using dual-treecomplex wavelet transform. Expanded Abstr., 90th Ann. Internat. SEG Mtg.,Houston: 1830-1834.
- Selesnick, I.W., Baraniuk, R.G. and Kingsbury, N.C., 2005. The dual-tree complex wavelettransform. IEEE Sign. Process. Magaz., 22(6): 123-151.
- Shatilo, A., Duren, R. and Rape, T., 2004. Effect of noise suppression on quality of 2C
- OBC image. Expanded Abstr., 74th Ann. Internat. SEG Mtg., Denver: 917-920.
- Soubaras, R., 1996. Ocean bottom hydrophone and geophone processing. Expanded Abstr.,66th Ann. Internat. SEG Mtg., Denver: 24-27.
- Wang, Y. and Grion, S., 2008. PZ calibration in shallow waters: the Britannia OBSexample. Expanded Abstr., 78th Ann. Internat. SEG Mtg., Las Vegas: 1088-1092.
- White, J.E., 1965. Seismic Wave Radiation. Geophysical Projection., 33: 956-969.
- Transmission and Attenuation. McGraw-Hill Book Company, New York.
- Yu, Z., Kumar, C. and Ahmed, I., 2011. Ocean bottom seismic noise attenuation usinglocal attribute matching filter. Expanded Abstr., 81st Ann. Internat. SEG Mtg., SanAntonio: 3586-3590.
- Yu, Z., Abma, R., Etgen, J. and Sullivan, C., 2017. Attenuation of noise and simultaneoussource interference using wavelet denoising. Geophysics, 82(3): V179-V190.
- Zabihi, E., Baboulaz, L. and Grion, S., 2011. Enhanced wavefield separation of OBS data.Extended Abstr., 73rd EAGE Conf., Vienna: CP-238.