Application of a Multiphase Coning Model to Optimize Completion and Production of Thin Oil Columns Lying Between Gas Cap and Water Zone

Abstract

then be respected together. On the other hand, because of the great number of parameters involved, theoretical hand calculations cannot A recently developed, high performance, numerical model be achieved without assuming drastic simplifications.was used to anafyse three phase coning. Results, obtained in a series of simulations, have supplied general directions for optimizing This is why, up to recent years, most of these works were too completion and production of thin oil columns comprised between partial, approximate, or inconclusive to be reliable. gas cap and water zone.It appears now that modern Iwo dimension, three phase A correlation is presented for fast evaluation. Conclusions, numerical models may help to clarify considerably this complicated valid only for reservoirs showing no major heterogeneity, depend subject.mdln]y on relative permeability effects, gas cap expansion and water drive strength.BACKGROUNDOF DOUBLE CONING THEORY Under certain conditions, it appears that wells perforated The first idea that occurs to prevent double coning, and the under water oil contact and produced at high rate, as commonly easiest for application, is to produce oif under dtwr31e critical practised on some fields, notably in East European countries, are conditions, that is to say without breakthrough of gas and water giving the best results. into the well.