Method and system for real-time monitoring of earth...

Details Method and system for real-time monitoring of earth... Method and system for real-time monitoring of earth...

G - Physics

01

V

G01V 5/00 (2006.01) E21B 43/26 (2006.01) E21B 47/10 (2006.01) G01V 5/12 (2006.01)

Patent

CA 2143892

A method of monitoring formation fractures in real-time is performed in which a fluid containing a radio-active tracer element is pumped at a high pressure down a wellbore into a formation. As the fluid creates fractures and moves through the formation gamma-rays are emitted from the radio-active tracer element in the fluid. Detector means placed at predetermined locations in the wellbore continuously detect these gamma-rays. Gamma-rays emitted from wellbore fracture fluids are distinguished from formation gamma-rays and the detected formation gamma-rays are counted. As the fracture fluid approaches the height or vertical depth of these detector means, the gamma-ray count increases. Once the gamma-ray count reaches a predetermined level, the fracture will have reached a desired location in the formation and pumping of the fracture fluid will stop.

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