Abstract

Reservoir characterization is a collection of process for describing and quantifying spatial variations in rock and fluid properties associated with reservoir. Given the right planning, technology and implementation, well testing can provide vital information related to reservoir pressure, distance to boundaries, areal extent, fluid properties, permeability, flow rates, drawdown pressures, formation heterogeneities, vertical layering, production capacity, formation damage, productivity index, completion efficiency and more. Pressure Transient test is one of the valuable test related to geological modeling. Analysing pressure Transient data gives the most useful information regarding reservoir characteristics and reservoir boundaries /discontinuities. The reservoir parameters evaluated from Pressure Transient Analysis are very useful in updating geological model. Interpretation of Build-up data of Anklav#9 indicates that there is an increasing trend in derivative plot reservoir is having a radial homogenous, single phase flow, constant compressibility with a single fault effect at a distance of 1789 ft. The log-log plot revealed the transition phase from radial flow which can be considered as a presence of boundary effect. This is also in conformity with the geological and structural set up of the study area.