海洋地质与第四纪地质2024，Vol.44Issue(6)：34-45,12.DOI:10.16562/j.cnki.0256-1492.2024091301
电火花震源高分辨率地震勘探技术及其在海域天然气水合物识别中的应用
High-resolution seismic exploration technology with spark source and its application in identification of natural gas hydrates in marine areas
摘要
Abstract
Accurate identification of natural gas hydrates is of great strategic importance for ensuring national energy security,optimizing energy structures,and protecting the environment.Seismic exploration technology is a crucial means for hydrate exploration.However,most multi-channel seismic explorations in marine areas use airgun sources with relatively low dominant frequencies,resulting in limited resolution of seismic waves,which limits its ability to detect shallow surface layers or subtle geological structures.With the increasing in demand for accuracy and the difficulty of hydrate exploration,seismic exploration technology using airgun sources can no longer meet the needs of fine characterization of hydrate ore bodies.Therefore,improving the resolution of seismic exploration technology is crucial for hydrate exploration.This paper introduces a high-resolution seismic detection technology based on small-offset electric sparker sources.Through comparative analysis with airgun sources,the characteristics of electric sparker sources and their application in marine hydrate exploration are deeply discussed.Results show that high-resolution seismic exploration technology using electric sparker sources has good application effects in identifying both diffused hydrates and shallow leakage hydrates.Especially for shallow leakage hydrates,using electric sparker source seismology can better identify amplitude anomalies,fluid migration pathways,and subtle seabed morphologies in the seabed and shallow strata,which can improve effectively the reliability of identifying shallow gas hydrate.关键词
高分辨率地震/电火花震源/天然气水合物/地震属性Key words
high-resolution seismology/sparker source/gas hydrate/seismic attribute分类
天文与地球科学引用本文复制引用
骆迪,蔡峰,闫桂京,李清,孙运宝,董刚,李昂..电火花震源高分辨率地震勘探技术及其在海域天然气水合物识别中的应用[J].海洋地质与第四纪地质,2024,44(6):34-45,12.基金项目
国家自然科学基金"南海北部高富集天然气水合物储层特征与成藏控制机理研究"(U2244224),"马克兰增生楔低角度俯冲区断层'接力'过程及其对水合物成藏的控制"(42076069) （U2244224）
