The existence of vugs or cavities in naturally fractured reservoirs has long been observed. Even though these vugs can be largely attributed to reserves of oil, natural gas, and groundwater, few investigations of vuggy fractured reservoirs have been conducted. In this paper, a new multiple-continuum conceptual model is developed, based on geological data and observations of core samples from ca...

In many practical cases, a single legacy reservoir model generated through tedious manual construction/adjusting to match geological, geophysical and production history requires updating because of the availability of new production data. Current approaches such as assisted history matching, model updating using filtering technique and others are often not practical for two reasons: 1) they req...

RESULTS Drilled four wells based on the model, successfully predicting the type and thickness of reservoir facies, enabling the operator to pursue optimal field development strategies with higher confidence in the distribution and connectivity of critical flow units. Modeling reservoir architecture with limited data After successfully developing Cretaceous reservoirs in several northern Kuwait ...

An “EKP-postprocessor” computational tool was developed several years ago to calculate space/time distributions of electrokinetic potentials resulting from histories of underground conditions (pressure, temperature, liquid-phase saturation, concentration of dissolved species, etc.) computed by unsteady multidimensional geothermal reservoir simulations (Ishido and Pritchett, 1996). Since that ti...

Tracer testing in fractured reservoirs has long been limited by the availability of unique and unambiguous tracers. In this study, we introduce the concept of using thermophilic microorganisms and DNA barcoding techniques for fractured reservoir characterization. On the one hand, thermophilic microorganisms have the potential of thriving in the extreme environment of geothermal and oil reservoi...

The radius of investigation (ROI) is an essential parameter in many reservoir engineering applications. Inconsistencies and ambiguities still exist between different ROI evaluation methods, especially for the dual-porosity (DP) system representing naturally fractured reservoirs. This paper revisited impact inter-porosity flow DP presented equations early late periods based on Laplace space solu...

Abstract During polymer flooding into the reservoir using shear-thinning non-Newtonian fluids, an interface exists between in situ Newtonian crude oil and injected solution. This paper examines application of well test analysis techniques to develop analytical solution non-Newtonian/Newtonian fluids with different flow index composite reservoirs for estimating boundary conditions such reservoir...