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本文针对低幅度构造油藏的特点,从地震速度研究入手,通过对地震速度谱分析,用平滑平均速度的方法建立精确的三维变速场。用该速度场进行时深转换,在此基础上,运用Z_Map模块结合单井分层数据,对深度域的结果进行校正。在井校的基础上,利用Petrel软件构造成图功能,以经井校处理后的深度域的数据作为约束条件,结合单井分层数据,对构造进行进一步的校正,从而达到了提高构造解释精度的要求。
In this paper, according to the characteristics of low-amplitude structural reservoirs, starting with the study of seismic velocities, an accurate 3D variable velocity field is established by means of smoothing average velocities based on seismic velocity spectrum analysis. Using the velocity field for time-to-depth conversion, on the basis of this, the Z_Map module is combined with the single-well layered data to correct the result of the depth domain. On the basis of the well school, Petrel software is used to construct the map function, and the data of the depth domain after the well school processing are used as the constraint conditions. Combined with the data of single well stratification, the structure is further corrected so as to improve the structure interpretation Accuracy requirements.