EVALUATION OF VIABILITY OF A CRUDE OIL RESERVOIR USING PETROPHYSICAL PARAMETERS

INTRODUCTION
  

Generally, the major oil companies maintain their own research and development (R&D) records and also, nurture in-house technological and engineering skills acquisition schemes. For this reason, some companies see the core activities needed before oil exploration as unrealistic if carried out, externally. They now preserve only what is essential to evaluating the cost of exploration from a particular reservoir. These core activities include the formation evaluation technique, which is applied to determine hydrocarbon saturation in a given reservoir, the determination of oil- in- place (OIP) or stock Tank Oil initially in Place (STOIIP) and the application of ultimate Recovery Factor (URF), based on analysis of some petrophysical parameters using current technology. This research work gives attention to determining the most economical means of estimating the percentage of hydrocarbon saturation in a particular reservoir, and its recovery factor. A model called, Area – Depth concept model was developed to analytically estimate the quantity of crude oil deposits in a reservoir, using QIT oil well reservoir as a case study. The basic economic measures that are related to oil production were evaluated. In this research, Archies’ Law was applied in the determination of water saturations at different zones in a particular reservoirs based on the log data of the petrophysical parameters from the QIT oil well reservoir, in the Niger-Delta basin. This helps to determine the productive oil zones by estimating the percentage of hydrocarbon saturations in the reservoir. This study would help reduce considerably the overall cost involved in executing recovery process from a particular reservoir in order to achieve optimum yield. There is no doubt in the fact that the world has consumed approximately 40 percent of the estimated recoverable reserves, i.e. more than one- third of the easily recoverable reserves have been found and consumed (Stela Shamon,1998).

To get complete project material call 070787135843