METHOD FOR ESTIMATION OF BOREHOLE AND FORMATION PROPERTIES FROM NUCLEAR LOGGING MEASUREMENTS

摘要

Disclosed is a model-independent method for accurate prediction of formation and borehole properties from neutron capture cross section measurements. A mapping function is constructed which maps the input measurements to the properties of interest. The mapping function is a linear combination of Gauss radial basis functions. The expansion coefficients and widths of the Gaussian functions are determined uniquely using a database populated with representative samples. For a sample not included in the original database, the desired properties can be estimated from the mapping function using the measurements made on the unknown sample.