Application of attenuation technology to shallow water multiples in multi-channel seismic data processing

YANG Jiajia; PAN Jun; LUAN Xiwu; YAN Zhonghui; LIU Hong

doi:10.16562/j.cnki.0256-1492.2018101202

Marine Geology & Quaternary Geology > 2020 > 40(1): 167-174. > DOI: 10.16562/j.cnki.0256-1492.2018101202

YANG Jiajia, PAN Jun, LUAN Xiwu, YAN Zhonghui, LIU Hong. Application of attenuation technology to shallow water multiples in multi-channel seismic data processing[J]. Marine Geology & Quaternary Geology, 2020, 40(1): 167-174. DOI: 10.16562/j.cnki.0256-1492.2018101202

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Application of attenuation technology to shallow water multiples in multi-channel seismic data processing

YANG Jiajia^1,2,,
PAN Jun^1,2, ,,
LUAN Xiwu^1,2,
YAN Zhonghui^1,2,
LIU Hong^1,2

1.
Key Laboratory of Marine Environmental Geology, Ministry of Natural Resources, Qingdao Institute of Marine Geology, Qingdao 266071, China
2.
Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China

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Received Date: October 11, 2018
Revised Date: January 02, 2019
Available Online: August 25, 2019

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Abstract

Abstract

The multi-channel seismic data acquired by cables are often affected by multiple waves propagating between seawater and periodic strong amplitude interferences on common shot gathers, which include the seabed and the strong reflections below it. Some solutions to eliminate the interference of multiple waves are discussed in this paper. The generation mechanism of the shallow water multiple waves i.e. the multiple oscillations between sea-level and seabed are firstly discussed and analyzed. Then statics technique is used to suppress the multiples in the τ-p domain according to the vibrating characteristics of the multiples in the sea. The core of the method is to predict the cycling multiples in the τ-p domain and attenuate them by adaptive subtract. The results demonstrate that the method is effective in suppression of shallow water multiple waves caused by sea-water oscillation, the S/N ratio is obviously improved and the profile is better than that before the processing.
- shallow water de-multiple,
- multi-channel seismic,
- τ-p transform

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References (24)

References

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Application of attenuation technology to shallow water multiples in multi-channel seismic data processing