FOREWORD This code was formulated by the Topical committee on production Technology of the Central Committee on Drilling and Production Practice in the Division of Production of the American Petroleum Institute. Purpose The purpose of this code is to facilitate comparisons and coordination of permeability measurements on porous media as made in various laboratories by the adoption of uniform notation and dimensionally equivalent units. It is the further of error commonly encountered@ not with the view to standardize the detailed technique of measurement but rather to insure that reported values are free from inaccuracies caused by faulty methods and improper conditions of test.
API CODE 27-1942 history
1942API CODE 27-1942 RECOMMENDED PRACTICE FOR DETERMINING PERMEABILITY OF POROUS MEDIA THIRD EDITION (R 1956) (WITHDRAWN)
1935API CODE 27-1935 STANDARD PROCEDURE FOR DETERMINING PERMEABILITY OF POROUS MEDIA (Tentative) (First Edition)