Patent ID: 8095318

Claim:
A method for determining a dip of geologic formations penetrated by a wellbore using multiaxial induction measurements and imaging measurements, comprising: estimating a first dip from first multiaxial induction measurements the multiaxial induction measurements obtained by moving a multiaxial induction well logging instrument through the wellbore and making a record thereof with respect to depth, the estimating including generating values of vertical and horizontal resistivity; estimating a second dip from imaging measurements the imaging measurements made by moving an imaging well logging instrument through the wellbore and making a record thereof with respect to depth; determining a combined estimate of the dip by combining the first and second dips and a relative confidence value for each of the dip determined from the multiaxial induction measurements and for the dip determined from the wellbore images; implementing the relative confidence value as weight values w 1 and w 2 for each of the induction-determined dip and the image-determined dip values; calculating a corrected dip value as follows: n=w 1 ·n 1 +w 2 ·n 2 , where n is the vector normal to the resulting dip, n 1 is the vector normal to the dip value from the induction measurements and n 2 is the vector normal to the dip from the wellbore image measurements; and repeating the multiaxial induction measurement estimating using the corrected dip as an input rather than as an output parameter, and with vertical resistivity and horizontal resistivity as output parameters.