【摘要】 地震调查方法在水合物中的应用分为两个主要阶段:调查初始阶段和调查深入阶段。调查初始阶段以“突出天然气水合物的四大主要识别标志(似海底反射、振幅空白带、穿层特征、振幅和速度结构异常)”为主要目的,为资料的处理、解释提供丰富的地震信息。从而圈定天然气水合物富集程度高、成藏条件好的“目标”靶区,开展深入调查,更好地展现“天然气水合物矿体立体上的形态特征”,了解“水合物矿体的厚度、顶底界面及富集程度”。文中从震源技术研究、高分辨率地震调查技术的调谐组合参数研究和野外施工方法等方面的内容出发,根据大量野外技术试验资料和有关科研成果,总结了在天然气水合物调查初始阶段的特点及相应的地震调查技术。更多还原

【Abstract】 Seismic exploration for gas hydrate experiences two stages: the primary survey stage and the further survey stage.The main purpose of the primary stage lies in the four characters identification of gas hydrates,i.e.the bottom simulating reflection,amplitude blanking,crosscutting strata、abnormity in velocity and amplitude,to provide more useful seismic information for data processing and interpretation.Then we can mark the target zone for further investigation and thus giving its three dimension characters and obtaining its thickness,bottom and top depth and richness.This paper bases on seismic source study,high resolution seismic survey’s harmonic parameters study and field operation method,according to lots of sea trial data and other bibliography,summarizing the characters of the primary stage in gas hydrates exploration and corresponding seismic exploration technology.更多还原