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Patent
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G01V 3/12 (2006.01) G01V 3/30 (2006.01)
Patent
CA 1096939
60.453 ABSTRACT OF THE DISCLOSURE The disclosure is directed to an improved apparatus and method for determining the water-filled porosity, designated ?.omega., of formations surrounding a borehole. A first quantity is obtained which is a measure of the travel time of microwave electromagnetic energy propagating over a predetermined distance in the formations, this first quantity being designated as tp1. A second quantity is also obtained which is a measure of the attenuation of the microwave electromagnetic energy propagating over the predetermined distance in the formations, the second quantity being the attenuation constant, .alpha.. A third quantity, designated tpw1, is representative of the travel time of microwave electromagnetic energy propagating over the predetermined distance in water having a lossiness determined from ?. Finally, tp1 and tpw1 are combined to generate the water-filled porosity ?w.
297160
Schlumberger Canada Limited
Smart & Biggar
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