Method of using underbalanced well data for seismic...

Details Method of using underbalanced well data for seismic... Method of using underbalanced well data for seismic...

G - Physics

01

V

G01V 1/40 (2006.01) E21B 47/12 (2006.01) G01V 1/30 (2006.01) G01V 1/32 (2006.01) G01V 1/36 (2006.01)

Patent

CA 2442873

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.

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