Boring or penetrating the earth – With signaling – indicating – testing or measuring
Patent
1990-09-14
1991-12-24
Kisliuk, Bruce M.
Boring or penetrating the earth
With signaling, indicating, testing or measuring
175 45, 175 61, 166 665, 324346, E21B 704, E21B 4700, G01V 308
Patent
active
050743651
ABSTRACT:
A method for guiding a borehole with respect to a target wireline carrying low frequency alternating current is disclosed. A wireline carrying an electrode at its terminal end is positioned in a target cased or uncased borehole with the electrode contact the wall of the borehole. An AC source is connected between the wireline and ground to supply current to the borehole wall near the bottom of the borehole. A sensor is positioned in a borehole being drilled to sense the magnetic field generated by current flow in the wireline, the sensor being spaced sufficiently far along the wireline from the electrode location to prevent magnetic fields due to return current through the target borehole casing on through the ground surrounding the target borehole from significantly affecting the sensor. The sensor measures the net alternating magnetic field to determine the direction to the target borehole, to permit guidance of the borehole drilling.
REFERENCES:
patent: 4072200 (1978-02-01), Morris et al.
patent: 4372398 (1983-02-01), Kuckes
patent: 4396075 (1983-08-01), Wood et al.
patent: 4465140 (1984-08-01), Hoehn, Jr.
patent: 4529939 (1985-07-01), Kuckes
patent: 4593770 (1986-06-01), Hoehn
patent: 4685515 (1987-08-01), Huang et al.
patent: 4700142 (1987-10-01), Kuckes
patent: 4791373 (1988-12-01), Kuckes
patent: 4933640 (1990-06-01), Kuckes
Kisliuk Bruce M.
Vector Magnetics Inc.
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