Radiant energy – Geological testing or irradiation – Well testing apparatus and methods
Patent
1995-05-04
1997-06-03
Fields, Carolyn E.
Radiant energy
Geological testing or irradiation
Well testing apparatus and methods
250266, G01V 512
Patent
active
056357125
ABSTRACT:
A method for real-time monitoring of fracture extension during a fracturing treatment of a producing subterranean formation. A radioactive tracer injector is coupled to and spaced from a gamma ray detector by a distance approximately equal to a distance from a point of injection during fracturing to a boundary between the desired interval to be fractured and an adjacent formation which it is desired not to fracture. A programmed central processing unit positioned at a surface location receives spectral signals generated by the gamma ray detector during the fracturing treatment and generates a fracture penetration signal and a fracture injection pump control signal that stops a fracture injection pump whenever the fracture extension signal indicates the presence of radioactive tracer material within the producing subterranean formation at the depth location of the gamma ray detector. The programmed central processing unit distinguishes between the presence of radioactive tracer material within the formation versus radioactive tracer material within the borehole itself.
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Scott, III George L.
Smith, Jr. Harry D.
Fields Carolyn E.
Halliburton Company
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