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在海米罗斯工区勘探中,地震地质条件极为复杂,主要表现为地表沙山起伏剧烈和地下大倾角推覆构造。由此导致地震记录信噪比低、各种干扰波发育和近地表静校正问题突出。由于浅层的强波阻抗界面屏蔽了下传能量,导致有效波较弱,对地震资料处理带来很大难度。针对该地区原始资料特点,重点改善奥陶系主要目标层的反射品质及构造带轴部中深层反射信噪比为目标,开展静校正技术、叠前多域去噪、叠前时间偏移等目标处理技术研究,有效提高了地震剖面成像质量。
In the exploration of Haimeirosi area, the geological conditions of the earthquake are extremely complicated, mainly due to the drastic surface sand-mountain fluctuation and the large-scale underground nappe structure. As a result, the signal-to-noise ratio of seismic records is low, and the problems of the development of various interference waves and near-surface static correction are prominent. Because the shallow wave impedance interface shields the down-going energy, the effective wave is weak, which brings great difficulty to the seismic data processing. Focusing on the characteristics of the original materials in the area, focusing on improving the reflection quality of the main target layer of Ordovician and the signal-to-noise ratio of deep reflection in the structural belt axis, static correction techniques, pre-stack multi-domain denoising, prestack time migration, etc. Target processing technology research, effectively improve the seismic profile imaging quality.