辽河拗陷深层地震采集技术

Oil Geophysical Prospecting(2006)

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Abstract
辽河拗陷以往采集的深层地震资料信噪比和分辨率都较低,不能满足辽河油田进一步勘探和开发的需要,为此必须以获得良好的深层资料为目标,努力提高地震资料的信噪比和分辨率。辽河油田分公司选择辽河拗陷东部凹陷欧利坨子北部地区为突破口,通过采用最佳岩性激发、有效弱信号保护、变观测系统、增加覆盖次数等一系列改进措施,进行了系统分析和系列攻关试验,并采集了新的地震资料。可以明显地看出,新资料不仅具有丰富的浅层信息,其深层(3000m以下)及潜山内幕反射也很清晰,分辨能力有明显提高。
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Key words
geometry-changed design,seismic acquisition,protection of useful weak signals,shooting in optimum lithology
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