1. A method of three-dimensionally characterizing a reservoir using logging while drilling measurements from a high angle or horizontal wellbore, the method comprising: providing an initial reservoir model for the reservoir; extracting a section of the reservoir model for a planned trajectory of the wellbore; generating a secondary model by performing secondary modeling for at least part of the planned trajectory; identifying an area of interest within the secondary model where statistical uncertainty is high; defining possible causes of the statistical uncertainty in the area of interest within the secondary model that are not present in the initial reservoir model; defining a set of parameters for the area of interest based on the possible causes of statistical uncertainty; modeling the well logging tool response in the area of interest with at least one logging tool; evaluating sensitivities of the logging tool responses to the subset of parameters by performing at least one tertiary model for a range of the subset of parameters; identifying the most sensitive parameters from the subset of parameters and corresponding measurements; defining one or more real-time logging measurements to be used for proactive well placement along the planned trajectory based on the most sensitive parameters.