Estimate Gas Initially in Place of Tight Gas Reservoirs Based on Developed Methodology of Dynamic Material Balance Technique

With growing global demand for hydrocarbons and decreasing conventional reserves, the gas industry is shifting its focus in direction of unconventional reservoirs. Tight reservoirs have typically been deemed uneconomical due to their low permeability which understood be below 0.1mD, requiring advanced drilling techniques stimulation enhance hydrocarbons. However, first step determining economic viability reservoir see how much initially place. Numerical simulation has regarded across as most accurate form estimation, however, extremely costly time consuming. The aim this study provide a framework simple analytical method estimate gas. Usually during production three variables are readily accessible: rate, time, pressure-volume-temperature properties. This paper develops an approach derived from dynamic material balance proposing new methodology calculate pseudo with interactive technique. model encompasses functions accounting pressure dependent fluid rock variables. yielding weak results linear flow regimes, additional volumetric tank taken into consideration whereby equivalent drainage area linked total area. It shown even short data yields results. proposed validated against previous literature cases considered determine sensitivity each it parameters. Finally, that works both fractured unfractured wells tight reservoirs, sensitive quantity based within steady state period.