"Impact of Reservoir Simulation on the Management of Hydrocarbon Potential in the Tight and Heterogeneous Kadanwari Gas Field, Pakistan"

Abstract

Three tectonic events were responsible for the structural configuration of the field. On the reservoir level, NNW – SSE trending major strike-slip faults have dominantly dissected the field structure oriented NE-SW into several compartments. These severe faulting and subsequent compartments raise the key challenges in the development of the field. The field is producing from the Lower Goru clastic reservoir of the Early Cretaceous age. Lower Goru sands were deposited in a shoreline to estuarine system and this led to rapidly varying reservoir characteristics. The trap was formed by a stratigraphic pinch out to the NNE over an arch, the axis of which plunged to the SSE. The main purpose of the study is integrating the geophysical, geological and engineering data for evaluating the gas potential, improving productivity, predict the field production performances, and optimize the operational field management and investment decisions. However, finding the solutions of the field problems, like high reservoir heterogeneity, reservoir extension, reservoir quality, compartmentalization, fault sealing, fluid contacts, seismic pull up, fault shadow and exact definition, and porosity (PHIE) –permeability (K) relation challenge.