Well Test Analysis in Fracturing Well Ogan Field

Abstract

Analysis were performed on data acquired during dedicated operations called well test. Well test analysis were used to determine a reservoir model, reservoir development and recommendation to perform stimulation job or fracturing job in a damage reservoir. In Ogan field, several layers are known as tight reservoir its describe from log interpretation and low production index. In this case we used well test analysis to determine reservoir model after fracturing job perform in a tight reservoir layer.

Several wells in OGAN field were produced from tight layer describe from low production test after perforated. Well test performed to obtain reservoir characteristic before well intervention, the results are positive skin, low permeability and low productivity index, these results of well test are used to initiated fracturing job in this well.

After fracturing job, production test shows production rate was not increase than before, then well test performed again to analyze the changes of reservoir characteristic after fracturing job done in OGN XX. In this paper derives well testing analysis to determine the causes of production rate below as expected.