COMPLEX MULTIPLES AND THEIR SUPPRESSION STRATEGY IN DEEP WATER SEISMIC EXPLORATION IN QIONGDONGNAN BASIN

LIU Jinpeng; FANG Zhongyu; ZHONG Mingrui; ZHAO Ming; DENG Min; YANG Wei

doi:10.16028/j.1009-2722.2017.12007

2017 Vol. 33, No. 12

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Article navigation > Marine Geology Frontiers > 2017 > 33(12): 53-59

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LIU Jinpeng, FANG Zhongyu, ZHONG Mingrui, ZHAO Ming, DENG Min, YANG Wei. COMPLEX MULTIPLES AND THEIR SUPPRESSION STRATEGY IN DEEP WATER SEISMIC EXPLORATION IN QIONGDONGNAN BASIN[J]. Marine Geology Frontiers, 2017, 33(12): 53-59. doi: 10.16028/j.1009-2722.2017.12007

Citation:

LIU Jinpeng, FANG Zhongyu, ZHONG Mingrui, ZHAO Ming, DENG Min, YANG Wei. COMPLEX MULTIPLES AND THEIR SUPPRESSION STRATEGY IN DEEP WATER SEISMIC EXPLORATION IN QIONGDONGNAN BASIN[J]. Marine Geology Frontiers, 2017, 33(12): 53-59. doi: 10.16028/j.1009-2722.2017.12007

COMPLEX MULTIPLES AND THEIR SUPPRESSION STRATEGY IN DEEP WATER SEISMIC EXPLORATION IN QIONGDONGNAN BASIN

CNOOC Energy Technology-Drilling & Production Co., Development & Prospecting Geophysical Institute, Zhanjiang 524057, Guangdong, China

Received Date: 08 July 2017

Publish Date: 28 December 2017

Abstract

Abstract

Exploration and discoveries have confirmed that oil and gas are rich in deep water areas. However, complex multiples seriously affect the signal-to-noise ratio of the dataset and the quality of images in the middle to deep water areas. Recently, multiple technology based on the theory of multiple wave has rapidly developed. Comparing to the traditional multiple suppression technology including predictive deconvolution and 2D filtering and so on, it requires less prior information and may predict multiple models to attenuate multiples by matching subtraction so as to better preserve the primary amplitudes. However, there are still many difficulties in actual data processing, for examples, losing near offset in shallow water region and the influence of water bottom topography. There need integrated approaches to eliminate multiples with complex wave field. In this paper, we studied the model prediction for multiple attenuation and summarized the differences and application of multiple models.
- deep water /
- multiple attenuation /
- character analysis /
- SNR /
- Qiongdongnan Basin

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References

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