Abstract
THE EFFECT OF LIMITED ENTRY TO FLOW AT THE BOREHOLE ON THE STEADY-STATE PRODUCTION OF A WELL IS ANALYZED ON THE BASIS OF ANALYTICAL STUDIES OF EARLIER PUBLICATIONS AND WELL DATA. THE FINITE COSINE TRANSFORM WAS USED TO ARRIVE AT A SOLUTION FOR STEADY-STATE FLOW OF A SLIGHTLY-COMPRESSIBLE FLOW AND THE SOLUTION WAS PROGRAMMED FOR A DIGITAL COMPUTER. THE CORRECT CALCULATION OF SKIN AND DAMAGE RATIO IN THE PRESENCE OF LIMITED ENTRY TO FLOW IS OUTLINED AND CALCULATION OF THE NET DECREASE IN PRODUCTIVITY DUE TO THE COMBINED EFFECT OF LIMITED ENTRY AND PERFORMATIONS IS EXPLAINED. (GABRIEL-USGS)