Formation Factor Values in Western Canada Reservoirs

$2.00

W.D.M. Smith, Dresser Industries Canada Ltd

Abstract

Formation factor values are calculated from well logs and compared to available lab data and the Archie equation. Reasonably good agree- ment is found in sandstones and wherever carbonate lab samples have been subjected to pressure. The effects of overburden pressure on log derived formation factors is apparent on a group of coarse vugular dolomites found at various depths. Log derived formation factors are probably more realistic than lab data where high pres- sures are present insitu.