Method for detecting hydrocarbons by comparing nmr response...

Details Method for detecting hydrocarbons by comparing nmr response... Method for detecting hydrocarbons by comparing nmr response...

G - Physics

01

V

G01V 3/32 (2006.01) E21B 47/00 (2006.01) E21B 49/00 (2006.01) G01R 33/44 (2006.01) G01V 3/38 (2006.01)

Patent

CA 2435951

A method for detecting hydrocarbon-bearing zones in a formation penetrated by a wellbore includes acquiring at least two nuclear magnetic resonance measurements, each of the at least two nuclear magnetic resonance measurements acquired from a volume of investigation at a different radial depth from the wellbore; and determining whether the formation bears hydrocarbons by comparing the at least two nuclear magnetic resonance measurements. A method for detecting fines invasion in a formation surrounding a wellbore includes acquiring at least two nuclear magnetic resonance measurements, each of the at least two nuclear magnetic resonance measurements acquired from a volume of investigation at a different radial depth from the wellbore; and determining whether the fines invasion has occurred by comparing the at least two nuclear magnetic resonance measurements.

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