1887

Abstract

A further enhancement in the accuracy of the seismic explóration methods is associated witti the development of 4D and 5D technologies based on a rational integration of profile data witti borehole measurements for more detailed study of geologie features and for monitoring the wavefield parameters in the course of the reservoir development . Witti regard to onland operations, concurrent observat.ions in a number of Wells, with the shot point locations scattered over an area, will permit : a) depth of the subsurface survey to be enhanced by deeper placing both source and especially receiver locations, below the near-surface section which is narmally a severe filter for waves reflected from deeper interfaces ; b) velocity determination accuracy to be mach improved by processing data from individual Wells and by comparing the results in overlap zones ; c) time sections to be obtained from various depth levels ; d) reflection horizons to be correlated along profile lines and over an area

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/content/papers/10.3997/2214-4609.201410344
1992-06-01
2020-11-26
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