Electromagnetic signal pickup apparatus and method for use of same
AssigneeHalliburton Energy Services, Inc.
InventorHarrison C. Smith
Life of this patent
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Abstract
An electromagnetic pickup apparatus (46) and method for use of the same is disclosed. The apparatus (46) comprises a probe (60) that is insertable into a bore hole (64) or a trench (70) and a conductive backfill composition (62) that substantially surrounds the probe (60) having intimate contact with the probe (60) and the earth, thereby establishing a highly electrically conductive region (66) between the probe (60) and the earth.
Claims18
An electromagnetic pickup apparatus comprising:
- a probe adapted to receive electromagnetic signals, at least a portion of the probe disposed beneath the surface of the earth;
- and
- a conductive backfill composition substantially surrounding the probe and in intimate contact with the probe and the earth, thereby establishing a highly conductive region between the probe and the earth;
- wherein
- the conductive backfill composition comprises a carbonaceous material.
A method for reducing the attenuation of a received electromagnetic signal by an electromagnetic pickup device comprising the steps of:
- providing a probe adapted to receive electromagnetic signals;
- disposing at least a portion of the probe beneath the surface of the earth;
- and
- surrounding the probe with a conductive backfill composition such that the conductive backfill is in intimate contact with the probe and the earth;
- wherein
- the conductive backfill composition comprises a carbonaceous material.
An apparatus for receiving an electromagnetic signal comprising:
- a probe adapted to receive electromagnetic signals, the probe at least partially disposed within a bore hole in the earth, the bore hole having a length and diameter to receive the probe such that an annulus is formed between the probe and the bore hole;
- and
- a conductive backfill composition substantially filling the annulus between the bore hole and the probe and in intimate contact with the probe and the earth, thereby forming a highly electrically conductive annular region between the probe and the earth;
- wherein
- the conductive backfill composition comprises a carbonaceous material.
Dependencies are inferred from the claim text.