A UNIVERSAL SLIDE RULE FOR COMPUTING THE DIPS OF REFLECTING HORIZONS ON THE ASSUMPTION OF LINEAR INCREASE OF VELOCITY

Abstract

A slide rule is described by which the dip of reflectors can be computed rapidly and accurately for the case where instantaneous velocity can be assumed to increase linearly with depth. Values for initial velocity [Formula: see text], rate of increase of velocity, k, and the spread distance Δx, can be introduced into the device easily and changed at will. In conjunction with a previously described instrument, normal move‐out graphs and wave front charts can be constructed quickly and precisely.