Seismic imaging of a seepage gas hydrate system with a harrow‑like acquisition geometry

• Autorzy: Liu Bin , Xu Yunxia , Xue Hua , Wen Pengfei , Meng Dajiang

Identyfikatory

DOI

10.1007/s11600-022-00998-y

• Języki publikacji: EN

Abstrakty

EN

Seepage gas hydrate systems are abundant around the world. However, it is very challenging to characterize this type of gas hydrate because the internal structure of a seepage structure is difficult to image by the conventional seismic exploration method. Here, a novel approach is proposed to achieve high-resolution seismic imaging of a seepage gas hydrate system related to a pipe structure. Raw seismic data with small-size bins are acquired with a harrow-like acquisition geometry that uses one long cable (up to 2000 m) and multiple short cables (less than 1000 m). A high-frequency GI gun is used as a source. During processing, velocity analysis and footprint attenuation are more focused. Seismic imaging resolution has been greatly improved. A small-scale carbonate layer that is hard to identify on the conventional profile is well revealed on the new profile. The new profiles also better depict the boundary and internal structure of the pipe structure. These improve our understanding of seepage gas hydrate systems. Our approach provides an important complement to conventional offshore seismic exploration.

Słowa kluczowe

EN

gas hydrate; harrow-like geometry; fluid escape pipe

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2023
• Tom: Vol. 71, no. 4
• Strony: 1717--1728
• Opis fizyczny: Bibliogr. 32 poz., rys.

Twórcy

autor

Liu Bin

• Guangzhou Marine Geological Survey, China Geological Survey, Guangzhou 511458, China
• Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China

• https://orcid.org/0000-0002-7975-5208

autor

Xu Yunxia

• Guangzhou Marine Geological Survey, China Geological Survey, Guangzhou 511458, China
• Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China

autor

Xue Hua

• Guangzhou Marine Geological Survey, China Geological Survey, Guangzhou 511458, China
• Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China

autor

Wen Pengfei

• Guangzhou Marine Geological Survey, China Geological Survey, Guangzhou 511458, China
• Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China

autor

Meng Dajiang

• Guangzhou Marine Geological Survey, China Geological Survey, Guangzhou 511458, China
• Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).