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针对珠江口盆地惠州某区斜缆采集及平缆采集地震资料进行攻关,对2种地震资料采集方式下的频谱、保真保幅性、岩石物理、叠前反演效果等进行了分析,对地震井资料、地震剖面进行了对比和研究。结果表明:斜缆地震资料具有进行叠前反演的可行性,并且斜缆地震反演具有更高的精度,在刻画储层厚度、物性定量预测等方面均具有更大优势。斜缆地震资料低频信息丰富,有利于开展叠前反演工作,有助于获得更丰富的地质认识。
Aiming at the acquisition of inclined cable and flat cable acquisition seismic data in a certain area of Huizhou in the Pearl River Mouth Basin, the frequency spectra, fidelity preservation, rock physics and prestack inversion results under two kinds of seismic data acquisition methods are analyzed. Well data and seismic profiles were compared and studied. The results show that the inclined cable seismic data are feasible for prestack inversion, and the seismic cable slope survey has higher accuracy. It has greater advantages in characterizing reservoir thickness and quantitative prediction of physical properties. The low-frequency information of inclined cable seismic data is rich, which is conducive to prestack inversion work and helps to gain more geological understanding.