G - Physics – 01 – V
Patent
G - Physics
01
V
G01V 3/20 (2006.01) E21B 17/10 (2006.01) E21B 23/14 (2006.01)
Patent
CA 2191148
An apparatus for measuring the resistivity of earth formations penetrated by a wellbore having a conductive conduit. The apparatus includes an elongated sonde mandrel, a plurality of electrodes positioned at axially spaced apart locations along the mandrel, the electrodes being electrically insulated from the mandrel and from each other, the electrodes adapted to electrically contact the conduit and positioned collinearly so that the electrodes contact the conduit when the mandrel is radially displaced towards the wall of the conduit. Some electrodes are for injecting electrical current into the conduit, other electrodes are for measuring voltage drop along the conduit at axially spaced apart locations. The mandrel includes selectively extensible locking arms for urging the mandrel into contact with the conduit. The arms are radially positioned opposite to the electrodes. The apparatus includes a source of electrical current connected to the current injector electrodes, a circuit for measuring output of the source of electrical current, voltage measuring circuits connected to the voltage drop electrodes, and means for recording measurements of current and voltage drop.
Bullock H. Wade
Fanini Otto N.
Gissler Robert W.
Maissa Jacques
Rellinger Peter
Cassan Maclean
Western Atlas International Inc.
LandOfFree
Apparatus for measuring formation resistivity through a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for measuring formation resistivity through a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for measuring formation resistivity through a... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1387399