Journal ArticleDOI
Remarks on the signal to noise ratio in the vibroseis system
Reads0
Chats0
TLDR
In this paper, the authors present a discussion of some of the noise features of the VIBROSEIS system and their bearing on the determination of the optimally weighted stack.Abstract:
The paper presents a discussion of some of the noise features of the VIBROSEIS SYSTEM*** and their bearing on the determination of the optimally weighted stack.read more
Citations
More filters
Journal ArticleDOI
Seismic noise‐reduction techniques for use with vertical stacking: An empirical comparison
TL;DR: A systematic comparison of a wide range of noise‐reduction techniques applied to a single data set collected for this purpose was attempted, finding that true‐amplitude CMP stacks can be substantially improved for low levels of ambient noise.
Journal ArticleDOI
Optimum stacking of seismic records with irregular noise
Yuriy Tyapkin,Bjørn Ursin +1 more
TL;DR: In this article, the authors proposed a more realistic model that assumes a signal with an identical shape on each trace to be embedded in spatially uncorrelated irregular noise, and a solution to the maximum likelihood estimation of the signal shape is derived.
Journal ArticleDOI
Combisweep—a contribution to sweep techniques*
H. Werner,Th. Krey +1 more
TL;DR: In this paper, the authors proposed a new economical possibility of forming approximately nonlinear sweeps by combining several linear sweeps with or without time gaps to a "Combisweep" and applied automatic switching at predetermined times within the gaps between the individual sweeps.
Journal ArticleDOI
Downhole Periodic Seismic SOURCES
TL;DR: In this article, a pneumatic oscillator was used to generate downhole low-frequency (10-100 Hz) seismic waves and these waves could effectively penetrate a highly fractured formation.
Journal ArticleDOI
Signal Enhancement of Vibratory Source Data in the Presence of ATTENUATION
TL;DR: In this paper, a waveform shaping filter was proposed to reduce the influence of phase distortion on the received waveforms as well as to increase S/N ratio resolution of vibratory source data.