INTEGRATED LOGGING TOOL FOR BOREHOLE

An apparatus for measuring characteristics of earth formations surrounding a borehole, comprises a resistivity measurement device having a multiplicity o f antennae spaced between each other in a longitudinal direction of the apparatus. A neutron measurement device of the apparatus comprises at leas...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	STOLLER, CHRISTIAN, SMITS, JAN WOUTER, FISSELER, PATRICK, EVANS, MICHAEL, ADOLPH, ROBERT
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	DETECTING MASSES OR OBJECTS GEOPHYSICS GRAVITATIONAL MEASUREMENTS MEASURING PHYSICS TESTING
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Beschreibung
Zusammenfassung:	An apparatus for measuring characteristics of earth formations surrounding a borehole, comprises a resistivity measurement device having a multiplicity o f 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 detector s 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.