Integrating of Core and Logs and 2D Seismic Data to Improve 3D Hydraulic Flow Unit Modeling

Petrophysical parameters are input data to modeling of state and production ability of hydrocarbon reservoir. Using Eclipse® needs to divide reservoir into hydraulic flow units, HU, and characterize them with geometrical and geological factors. Porosity and permeability are the most important features deciding about productivity of reservoir. Flow Zone Indicator, FZI, a factor calculated using only porosity and permeability makes easier description of hydraulic flow units without applying of coefficients which are difficult to evaluate. In the paper an integration of data of micro scale (core plug) to log scale and then to seismic scale has been done to improve 3D HU modeling. The presented case study was tested in one of the gas deposits in the Miocene reservoirs in the northern part of the Polish Carpathian Foredeep. The case study comprise the following steps: i) HU classification using core data, ii) HU prediction using core and log data, iii) 3D HU modeling using log and 2D seismic data. The presented case study may be used as a pattern for reprocessing of old data from other gas fields in the Miocene sandy-shaly formation, where dense sets of 2D seismic line exist and there is great amount of core data.