Bed boundary detection and invasion profiling with...

Details Bed boundary detection and invasion profiling with... Bed boundary detection and invasion profiling with...

G - Physics

01

V

G01V 3/30 (2006.01) E21B 47/04 (2006.01)

Patent

CA 2398154

A resistivity tool (800) associated method includes measuring the phase shift of an electromagnetic signal at different locations. Preferably, this is accomplished by a resistivity tool (800) having three receivers (R1, R2, R3). The difference of the phase shifts at the different locations indicates with precision the depth in a borehole of a bed boundary. The preferred resistivity tool also yields improved radial resolution.

L'invention concerne un procédé associé à un outil résistif (800) permettant de mesurer le décalage de phase d'un signal électromagnétique à différents emplacements. Ce procédé est mis en oeuvre, de préférence, au moyen d'un outil résistif (800) comprenant trois récepteurs (R1, R2, R3). La différence des décalages de phase à différents emplacements permet d'indiquer avec précision la profondeur d'une limite de lit dans un trou de forage. Cet outil résistif préféré permet aussi d'obtenir une résolution radiale améliorée.

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