DYNAMIC RESERVOIR CHARACTERIZATION INTEGRATING OPENHOLE LOGS AND CONTINUOUS FLOWING TEMPERATURE SURVEY DURING WELL TEST OPERATIONS: A WAY TO INCREASE THE RESERVOIR KNOWLEDGE MITIGATING OPERATIONAL COSTS AND RISKS

摘要

The definition of the actual net pay is one of the most important parameter for a comprehensive dynamic petrophysical reservoir characterization. In heterogeneous reservoirs, well test interpretation lacks a direct link with the real flowing thickness of the reservoir units and this represents the major cause of inaccurate permeability estimation. Usually production logging can represent the conventional way to collect this kind of information; however, in offshore deep water wells, these operations entail risks, costs and time.The paper deals with a robust dynamic characterization approach based on a continuous temperature measurement performed during the whole well test operations in a deep water gas well. This novel technology provides a mapping of the flowing contributions thanks to temperature sensors integrated on the perforation guns overcoming risks and costs of a standard production logging tool (PLT) acquisition.