Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...
Patent
1984-11-06
1986-06-10
Suchfield, George A.
Boring or penetrating the earth
With signaling, indicating, testing or measuring
Tool position direction or inclination measuring or...
175 40, 166 665, 324346, E21B 4600
Patent
active
045937702
ABSTRACT:
A logging sonde injects alternating current into the well casings of a plurality of producing wells at desired subsurface depth points. The resulting magnetic fields created around the well casings of the producing wells are detected by a magnetometer in a new well being drilled to prevent drilling into one of the production wells.
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Gilman Michael G.
Hager Jr. George W.
McKillop A. J.
Mobil Oil Corporation
Suchfield George A.
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