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邹家建:复杂构造区地震资料作图方法研究,《石油地球物理勘探》,22(4)1987:465～467,484海相地层由于受历次构造运动作用的影响,褶皱强烈,在横向上往往表现为岩性变化大,平均速度变化剧烈;纵向上由不同时代新老地层组成,真速度呈非线性变化。我们在资料解释中,利用常规直射线法和曲射线法经常出现深部大倾角陡构造反射界面不成像的现象,利用等 t_0图也无法转换成构造图,直接影响了成果精度。为此,我们既考虑到速度纵向变化规律,又考虑到横向变化的特点,利用变 v_0平均梯度法中的v_0(t_0)、β(t_0)参数刻画速度的纵向变化,而用分层量板中 t_0-H 曲线反映速度横向变化,综合两
Zou Jiajian: Study on the Method of Seismic Data Mapping in Complicated Structural Area, Petroleum Geophysical Prospecting, 22 (4) 1987: 465 ~ 467, 484 The marine strata, due to the influence of previous tectonic movements, have strong folds and laterally tend to be rocks The change of sex is big and the average speed changes drastically. In the vertical direction, it is made up of old and new strata in different ages, and the true speed shows a nonlinear change. In the data interpretation, we often find that the steep tectonic reflection interface in deep deep dip is not imaged by conventional direct ray method and curved ray method, and the t_0 image can not be transformed into a tectonic map, which directly affects the accuracy of the result. For this reason, considering both the vertical and horizontal variation of velocity, taking into account the characteristics of lateral variation, we use the v_0 (t_0) and β (t_0) parameters in the variable v_0 average gradient method to depict the longitudinal variation of velocity, The t_0-H curve reflects the speed of lateral changes, combined two