Measuring and testing – Borehole or drilling – Formation logging
Reexamination Certificate
2006-07-11
2006-07-11
Williams, Hezron (Department: 2856)
Measuring and testing
Borehole or drilling
Formation logging
Reexamination Certificate
active
07073378
ABSTRACT:
An apparatus for measuring characteristics of earth formations surrounding a borehole, comprises a resistivity measurement device having a multiplicity of antennae spaced between each other in a longitudinal direction of the apparatus. A neutron measurement device of the apparatus comprises at least a neutron source and at least a neutron detector, each of the neutron detectors being at a distance from the neutron source in the longitudinal direction of the apparatus. The multiplicity of antennae are interleaved with the neutron measurement device in order to reduce a total length of the apparatus and in order to allow a determined area of the earth formation to be measured simultaneously using the neutron measurement device and the resistivity measurement device.
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Adolph Robert
Evans Michael
Fisseler Patrick
Smits Jan Wouter
Stoller Christian
Bellamy Tamiko
Echols Brigitte L.
Schlumberger Technology Corporation
Segura Victor H.
Williams Hezron
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