Electricity: measuring and testing – Of geophysical surface or subsurface in situ – Using electrode arrays – circuits – structure – or supports
Patent
1998-01-23
2000-09-05
Snow, Walter E.
Electricity: measuring and testing
Of geophysical surface or subsurface in situ
Using electrode arrays, circuits, structure, or supports
G01L 302, G01L 304
Patent
active
061148555
ABSTRACT:
When prospecting for geological formations, a feeding electrode 2 is grounded in the center of a circle formed by uniformly grounded feeding electrodes 3. The feeding electrodes 3 are connected by lengths of supply lines 4 to current generators 1 via regulators 5. A first stage of investigations involves a preliminary sounding. Current pulses are applied from the generators 1 to the lengths of supply lines 4 which are connected to diametrically opposite feeding electrodes 3. A current pulse period is synchronized with a reference signal received by a receiver 7 from the global radio navigation system. Upon turning the current off, a signal of a field magnetic component transient is measured by a meter 8 that is coupled to a magnetic component sensor 9. Using the measurement results, a geoelectric section of country medium is constructed, and expected values of the field electric and magnetic components are determined for the case when the constructed geoelectric section incorporates a geoelectric model of the geologic formation being sought. A basic sounding of the studied medium is then performed by applying equal currents to the supply line lengths 4 and measuring signals of electric and magnetic component transients along the profiles radiating from the center of said circle. The calculated and measured values of the field electric and magnetic components are compared and a decision on a presence of a geological formation in the studied medium is made based on the results of the comparison.
REFERENCES:
Physics of the Earth, "Vertical Currents Sounding", 1994, N 6, pp. 73-79, UDC 550.837, V.S. Moghilatov, B.P. Balashov.
Jurievich Sekachev Mikhail
Kuzmich Zakharkin Alexandr
Petrovich Balashov Boris
Sergeevich Mogilatov Vladimir
Vasilievich Sachenko Georgy
Snow Walter E.
Tovarischestvo S Ogranichennoi
LandOfFree
Apparatus for prospecting for geological formation 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 prospecting for geological formation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for prospecting for geological formation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2215849