نویسندگان
چکیده
کلیدواژهها
عنوان مقاله [English]
One of the steps in the seismic data processing is the tau-p transform analysis. The aspect of this transform is to improve resolution in seismic sections. The applications
of tau-p transform due to different useful aspects in seismic explorations contain: suppression or elimination of water reverberations and other multiples, velocity
analysis, migration and modeling, inversion, and noise attenuation.
In this paper, the linear and parabolic tau-p transforms are applied and considered on various models due to suppression or elimination of multiples and other unwanted
waves. These two kinds of transforms are compared with each other. Several computer
softwares developed in this research are designed to produce the synthetic seismic data. The data are then transformed to linear and parabolic tau-p for some seismic
processing. The direct waves, air waves, primary reflections, peg-leg multiples and water reverberations in two main software programs for two and more layer models are
considered. The results related to these two programs for six horizontal layers are exhibited.
A new filter is introduced and applied on the NMO corrected data in parabolic tau-p domain. Since arrival times of primaries are less than those of their multiples,
they have relative low tau and high p values; consequently, in parabolic tau-p domain, a linear corridor named as L-filter is chosen in a proper interval that contains desired
data. All data outside of this corridor is totally muted. By this procedure, multiples, air waves and direct arrivals are eliminated in tau-p domain. Then, by an inverse parabolic
tau-p the desired t-x data are obtained.
کلیدواژهها [English]
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