Combined sonic/pulsed neutron cased hole logging tool

A through casing formation evaluation tool string 1000, 2000, 3000 including a conveyance string, 100 a sonic array tool 200, a pulsed neutron tool 400 and one or more downhole memory modules 160, 540, 550. A method of through casing formation evaluation and casing and cementing integrity evaluation...

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Bibliographic Details
Main Authors DORFFER, DANIEL FRANCOIS, KWONG, KWOKSHAN
Format Patent
LanguageEnglish
Published 06.03.2014
Subjects
DETECTING MASSES OR OBJECTS
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
MEASURING
PHYSICS
TESTING
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Summary:A through casing formation evaluation tool string 1000, 2000, 3000 including a conveyance string, 100 a sonic array tool 200, a pulsed neutron tool 400 and one or more downhole memory modules 160, 540, 550. A method of through casing formation evaluation and casing and cementing integrity evaluation includes lowering a tool string into a cased wellbore; collecting data with the sonic array tool and pulsed neutron tool and transmitting at least a portion of the collected data via a conveyance string to a CPU located at the surface of the earth; storing at least a portion of the collected data in a memory module disposed in the tool string; removing the tool string from the wellbore; processing the collected data from both the sonic array tool and the pulsed neutron tool in the CPU to obtain selected rock property data about the one or more of the geologic formations and/or cement integrity is to be evaluated.
Bibliography:Application Number: AU20100360756