alexa Uphole Seismic Refraction Survey for Low Velocity Layer Determination over Yom Field, South East Niger Delta
Geology & Earth Science

Geology & Earth Science

Journal of Geology & Geophysics

Author(s): MO Ofomola

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The uphole refraction survey was carried out in YOM field 4-D prospect to evaluate the weathering thickness and velocity of the Low Velocity Layer (LVL). Five uphole locations were occupied in the study area and the time intercept technique of the seismic refraction interpretation was employed. For the different locations (A-E), the weathering thickness was found to vary from 0.9-1.9 m with velocity from 250-800 m sec-1. A sub weathering layer was also observed in all locations except A. Also, the velocity of the consolidated layer was found to vary from about 1750-1800 m sec-1 with a mean velocity of 1766 m sec-1. Using this result to eliminate the effect of LVL on reflection data from the graphical approach, it was observed that the elevation and weathering correction (static correction) was found to be eliminated at a datum of 2 m deep.

This article was published in Journal of Engineering and Applied Sciences and referenced in Journal of Geology & Geophysics

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