Fracture detection logging tool

Details Fracture detection logging tool Fracture detection logging tool

G - Physics

01

V

G01V 1/04 (2006.01) G01V 1/52 (2006.01)

Patent

CA 2058188

ABSTRACT A method and apparatus by which fractured rock formations are identified and their orientation may be determined includes two orthogonal motion sensors which are used in conjunction with a downhole orbital vibrator. The downhole vibrator includes a device for orienting the sensors. The output of the sensors is displayed as a lissajou figure. The shape of the figure changes when a subsurface fracture is encountered in the borehole. The apparatus and method identifies fractured rock formations and enables the azimuthal orientation of the fractures to be determined.

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