A method for determining the dip and direction of a formation fracture intersecting a borehole.

摘要

A borehole logging tool is rotated within and advanced along a borehole and a log of the formation surrounded the borehole is recorded. An interval of the borehole intersected by a formation fracture is identified on the recorded log. The fracture dip angle and dip direction are determined from the location of the center of the fracture with respect to the borehole and the peak amplitude and phase angle of the recorded borehole signal at the fracture location.