Patent ID: 7558675
Filing Date: 2009-07-07
Classification: G01V

Abstract:
1. A method for estimating an azimuthal dependence of a parameter of a borehole using logging sensor measurements acquired as a function of sensor azimuth, the method comprising: (a) rotating a downhole tool in a borehole, the tool including at least one logging sensor and at least one azimuth sensor, data from the logging sensor being operable to assist determination of a parameter of the borehole; (b) causing the at least one logging sensor and the at least one azimuth sensor to acquire at least one data pair during each of predetermined first and second time periods, each of the data pairs comprising a logging sensor measurement and a corresponding azimuth; (c) processing the data pairs acquired in (b) with a predetermined probability density function (PDF) to calculate sensor data that is probabilistically distributed in azimuth; and (d) assigning corresponding first and second borehole depth values to the probabilistically distributed sensor data determined in (c) using data pairs acquired during the first and second time periods.