IDENTIFYING RESERVOIR COMPARTMENTALIZATION USING FIELD DATA – FIELD X CASE STUDY

Identifying reservoir’s compartmentalization of Field X using field data is about subdividing a reservoir into segments that behave as separate flow units during production. It is caused by barriers to fluid flow. Flow barriers can be of different strengths ,ranging from relatively minor features that may inhibit flow to major features that will not allow any fluid communication. Reservoir compartmentalization is often a key uncertainty during reservoir appraisal. It may control the spatial distributions of reserves because different compartments may contain different oil water contacts and fluids of different composition (e.g. gas-oil ratio).Ideally ,reservoir compartmentalization should be mapped during reservoir appraisal so that this knowledge can be factored into field commerciality decisions ,development planning and facility designs (e.g. number of wells needed to drain oil) . The problem is that the dynamic data so useful for identifying compartmentalization during production usually lacking at the appraisal stage. Therefore, making the best use of the data that are available during reservoir appraisal is important. The purpose of the project is to show that by integration of initial dynamic data ,it is possible to identify the reservoir compartments at an early stage in field life .Those data are :
 Pressure data
 PVT data
 Well test analysis
 Log data