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有一种经济的计算机程序用来迭加倾角和正常时差变化范围较大的几个相邻共反射点的资料,然后从中抽取一组地震子波以确定倾角和正常时差,用来代表原始的地震资料,但是一种近似的和压缩的形式。将一条完整的地震测线处理结果所得的地震予波储存起来以供以后的多种用途,如: 1)对这些子波进行重排以构成一条记录剖面来模拟普通的共反射点迭加剖面,这就使构组一次波占优势或多次波占优势的记录剖面变得容易。此外还有一些好处,如可以改善信噪(随机噪音)比,可以同时显示正常时差变化范围较宽的互相重迭的一次子波,可以消除常规正常时差校正时远道上的波形拉长。 2)可以将抽取出来的每个子波画成短的倾斜轴放置在它确切的时间和空间位置上,并且标上估算的均方根速度,这样,我们在实质上就可以沿各个反射波显示出连续的均方根速度。这种资料可以用来估算层速度和平均速度。为了便于比较,这种标有速度值的倾斜轴剖面与共反射点迭加剖面应当使用同一个比例尺。
There is an economical computer program for overlaying the data of several adjacent reflection points with a wide range of dip and normal variations in time and then extracting a set of seismic wavelets from them to determine the dip and normal time difference to represent the original earthquake Data, but an approximate and compressed form. Seismic waves generated as a result of a complete seismic line processing are pre-stored for subsequent multiple purposes, such as: 1) rearranging the wavelets to form a recording profile to simulate an ordinary superposition of reflection points , Which makes it easy to construct a recorded profile that is dominant or multiples dominant. In addition, there are some benefits such as improving the signal-to-noise (random noise) ratio and displaying simultaneously overlapping primary wavelets with a wide range of normal time differences, thereby eliminating the waveform stretching in the conventional normal time-lapse correction. 2) Each wavelet extracted can be placed with its short tilt axis in its exact temporal and spatial location, with the estimated root mean square velocity, so that we can essentially display along the individual reflected waves Out of continuous rms speed. This information can be used to estimate layer velocity and average velocity. For ease of comparison, the same scale should be used for such inclined axis sections marked with velocity values and superimposed sections for common reflection points.