Improving Petrophysical Interpretation of Conventional Log ‎by Determination of Real Bed Boundaries

Proper determination of bed boundaries in layered reservoirs is vital ýfor accurate petrophysical interpretation of conventional logs. In the ýwellbore, logs continuously measure physical properties of reservoir ýwhile the properties change stepwise. This continuous representation ýof logs may lead to ignorance of some high potential reservoir zones. ýThe main reasons for continuous nature of logs in laminated reservoirs ýare the influence of shoulder beds on the reading of logging tools and ýlow vertical resolution of these devices.ýIn this paper we optimized a Laplacian filter to detect bed boundaries ýin conventional well logs. These blocking-based boundaries are ývalidated with FMI derived bed boundaries. Then the calculated ýpetrophysical properties including porosity and volume of minerals ýand fluids are distributed into the detected beds. Comparison of ýpetrophysical interpretation of logs based on blocking and FMI ýderived bedding showed that the petrophysical properties realistically ýdistributed into beds in layered reservoirs with the blocking technique. ýThe results also showed that blocking reduces the uncertainties, ýbecause it realistically distribute the petrophysical properties inside real ýgeological beds and alter the noises.ý