Analýza hydrodynamického výzkumu sondy Pr2 na ložisku uhlovodíků Prušánky

Abstract

Well testing plays an important role at many stages of well’s life by assessing both reservoir and well performance. This paper deals with an analysis pressure build-up test, carried out in a natural gas reservoir, developed by a single vertical well (Pr2) that belongs to Prušánky field, Czech Republic. It aims to characterise the reservoir and well parameters and feasible flow and boundary models using the Weatherford´s PanSystem sw. The reservoir was already depleted at the time of this study hence the camparison between the estimated OGIP and the cumulative production was made possible. The study´s main outcomes include estimation of important parameters such as reservoir permeability (125 mD) and skin factor (+6). Furthermore, the interpretation showed that selection of a two-cell compartmentalized reservoir model provided the most feasible estimation of the original gas in-place.