Abstract：As the characteristic marine processing methods of the GeoEast system can effectively improve the signal-to-noise ratio (SNR) and resolution of seismic data, we use them to study the distribution and thickness of natural-gas-hydrate ore bodies. First, ghost suppression is achieved by the ghost reflection attenuation driven by the phase of the undulating sea surface, and the complex multiples are removed by integrated multiple suppression technology. Then, the near-surface structure of the seabed is characterized by the Fresnel tomographic inversion method. Finally, pre-stack depth migration imaging is employed to improve the imaging accuracy of hydrate layers. The actual data processing results show that the characteristic processing methods of GeoEast can well process the seismic data of natural gas hydrates, and the final profiles improve the imaging accuracy of the bottom simulating reflector (BSR), providing high-quality seismic data for hydrate exploration.
王兆旗, 李立胜, 杨涛涛, 叶月明, 曹晓初, 王宗仁. GeoEast海洋特色处理技术在天然气水合物勘查中的应用[J]. 石油地球物理勘探, 2022, 57(s1): 44-50.
WANG Zhaoqi, LI Lisheng, YANG Taotao, YE Yueming, CAO Xiaochu, WANG Zongren. Application of GeoEast's characteristic marine proces-sing methods in natural gas hydrate exploration. Oil Geophysical Prospecting, 2022, 57(s1): 44-50.
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