The present invention generally provides methods of geological analysis.
The method includes collecting wellbore data from a well undergoing
underbalanced drilling. The wellbore data is then correlated to a seismic
data to predict geological properties away from the wellbore. In one
embodiment, correlating the seismic data with the wellbore data involves
converting the seismic data and the wellbore data to a one-dimensional
numerical series, respectively. The two respective one-dimensional
numerical series are compared to each other to produce a mathematical
formulation relating the two series. In another embodiment, the wellbore
data may be separated into different categories or classifications and
individually compared to the seismic data. Preferably, the categories are
compared to two or more variations of seismic data and their attributes to
derive at unique "signatures" for the respective category. The signatures
may then be used to produce "classification" maps of the wellbore data.
