Electricity: measuring and testing – Of geophysical surface or subsurface in situ – By magnetic means
Patent
1983-01-10
1985-07-16
Strecker, Gerard R.
Electricity: measuring and testing
Of geophysical surface or subsurface in situ
By magnetic means
166250, 175 50, 324369, G01V 324, G01V 326, E21B 4700, E21B 4900
Patent
active
045299390
ABSTRACT:
Logging apparatus for measuring magnetic fields while drilling is disclosed. An electrode is located within a drill string and receives alternating current which is conducted to the drill string and from the drill string is injected into the earth surrounding the well. This current is concentrated in anomalies of interest, such as the casing of a target well which is to be intercepted by, or to be avoided by, the well being drilled. A sensitive magnetometer is located within a nonmagnetic portion of the drill string, near the bottom thereof, to detect the alternating magnetic field generated by the current flow in the target and to produce output signals corresponding to the detected field. The output from the magnetometer is used to determine the relative locations of the well being drilled and the target.
REFERENCES:
patent: 2196314 (1940-04-01), Lee
patent: 2262419 (1941-11-01), Athy et al.
patent: 2291692 (1942-08-01), Cloud
patent: 2359894 (1944-10-01), Brown et al.
patent: 2414194 (1947-01-01), Ennis
patent: 2569390 (1951-09-01), Sewell
patent: 4323848 (1982-04-01), Kuckes
LandOfFree
System located in drill string for well logging while drilling does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System located in drill string for well logging while drilling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System located in drill string for well logging while drilling will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1738195