Effects of Brine Dispersion in the Allen Salt-Velocity Method

Abstract

This paper presents information concerning the effect of brine dispersion on the Allen salt-velocity method of measuring flow. The data are presented from a variety of sources, theory, laboratory investigation, and field tests. Theory and tests show that brine injected into a conduit disperses as the square root of the distance traveled. As a result of this relationship, salt-velocity curves occupy a smaller percentage of the passage time as the test length increases. This results in smaller test errors for long test sections. Also indicated in this paper are the results of further tests which show the minimum limits for length of test sections with equipment commonly used.