Patent Number: 6,167,348

Title: Method and apparatus for ascertaining a characteristic of a geological formation

Abstract: A method for ascertaining a characteristic of a geological formation surrounding a wellbore. The method comprises first generating a set of data including azimuthal and radial information. A set of parameters indicative of fluid behavior in the formation is determined for each one of at least two azimuths from the generated data. A tool-specific invasion factor is then determined. The characteristic is then determined from the parameters, the azimuthal information, and the invasion factor.

Inventors: Cannon; Darrel E. (Kingwood, TX)

Assignee: Schlumberger Technology Corporation

International Classification: G01V 5/10 (20060101); G01V 5/00 (20060101); G01V 3/20 (20060101); G01V 3/18 (20060101); G01V 003/38 ()

Expiration Date: 12/26/2017