Mobility Ratio - Its Influence on Injection or Production Histories in Five-Spot Water Flood

Abstract

Potentiometric model studies of the five-spot water flood to determine the influence of mobility ratio upon injection or production histories are described. The re-sults suggest a method for the correlation of data from field pilot tests for the estimation of an effective 1110-hility ratio and its effect upon field water floods. The effect of the well spacing-fo-well radius ratio upon pro-duction histories is presented. A method of accounting for this factor is suggested. The influence of injection (or production) rates and injection and production well pressures upon production histories is shown. The five-spot well pattern was investigated for water· to-oil mo-hility ratios of 0.1 to infinity.