Abstract

Non-explosive sources have become widespread. Along with electric spark and electrodynamic sources, which are used mainly in works on the upper part of a section, these include pneumatic sources. This type of source meets all the requirements for geophysical equipment. The main problem of such sources is the presence of intense pulsations and the long duration of the emitted signals, as well as the poor reliability of some clusters. The problem of pulsations during shallow water acquisitions is especially topical. The depth of shallow water does not allow one to extract a signature that is acceptable for the construction of an effective operator from the data due to the interference of pulsations from the direct wave with the bottom, while the suppression operator that is extracted from the theoretical signature often gives an unacceptable result. To solve bubble oscillation problems in shallow-water acquisition it is proposed to use combined information from bubble oscillations extracted from a direct wave, extracted from bottom reflections, waveform predicting deconvolution, and adaptive subtraction algorithms.

中文翻译：

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一种抑制浅海海洋地震勘探中气枪气泡振荡的技术

摘要

非爆炸物来源已变得广泛。除主要用于截面上部的电火花和电动动力源外，还包括气动动力源。这种类型的源可以满足地球物理设备的所有要求。这种源的主要问题是存在强烈的脉动和发射信号的持续时间长，以及某些簇的可靠性差。浅水采集过程中的脉动问题尤其突出。浅水的深度不允许人们从数据中提取出对于构造有效算子而言可接受的特征，这是由于直接波与底部之间的脉冲干扰所致，而抑制算子则是从理论上提取出来的。签名通常会给出不可接受的结果。