Application of these methods to several seismic lines indicates that trace distance weighting is the most useful method studied for suppressing deep-water-bottom multiples for data from the Atlantic Outer Continental Shelf.
The aim of seismic data processing is to obtain accurate image of the subsurface which can be interpreted in terms of subsurface structures favourable to hydrocarbon accumulation. Multiples.
The approximation holds as long as the water bottom is not too complex. Indeed the proposed approach has proved to work well on synthetic and field data when the water bottom is such that wavefront triplications are negligible, as happens in many practical situations. Read "Water‐bottom multiple attenuation by Kirchhoff extrapolation, Geophysical Prospecting" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
m, the periodicity of the multiple can be estimated . The predictive deconvolution methods are effective in suppressing short-period, free-surface multiples generated at shallow.
On the left is a water-layer multiple which is a multiple with at least one upwards bounce at the water bottom and one downward bounce at the surface. It is a special case of the more general free-surface multiple, which must have a bounce from the free-surface but may or may not include an upward bounce at the water bottom. Multiples from the water bottom (the interface of the base of water and the rock or sediment beneath it) and the air-water interface are common in marine seismic data, and .
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I bottom for my boyfriend all the time and 99% of the time I'm clean. I don't drink an excessive amount of water, I have a shitty diet, I don't take fiber supplements, and I just don't prep at all. I also have a shitty digestive system too (genetics) but there's RARELY any mess. The first-order multiple of the water bottom has a travel time ranging around double that of the original reflection, so in the subject survey area it is in the range of s – s two-way time (TWT).
The invention is a method for removing trapped water bottom multiples (figure 2, item 19), receiver side peg-leg multiples (13), and source side peg-leg multiples (15) from dual sensor (figure 1, item 6), OBC (7) data, where the data includes both pressure signals and velocity signals. water surface - water bottom (RSB). The BSB multiples (fig. 12a) consist of all ray paths that travel only between the water bottom and water surface. The second type of multiple, RSB (fig. 12b), reflects once from a strong reflector and reverberates between the water bottom and water surface.