Underground directional drilling steering tool
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United States of America Patent
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Apr 18, 2000
Grant Date -
N/A
app pub date -
May 12, 1997
filing date -
May 12, 1997
priority date (Note) -
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Abstract
An underground directional drilling steering tool for use with a variety of commercially known drill bits which controls the direction of drill while the drill bit is directly powered by the drill string by way of a drill string coupling. The offset transmitter housing retains the tool in a stable orientation downhole by means of the drill string coupling offset orientation in the housing and stabilizing fins affixed to the exterior of the offset transmitter housing. The positioning of the drill bit in relation to the positioning of the offset transmitter housing in the center of the borehole creates a drilling pathway with a constant curvature away from the wide side of the offset transmitter housing. The direction of this curvature is controlled by means of a jaw clutch, which jaw clutch is engaged by drawing back slightly on the drill string thereby retracting the drive shaft and pulling the drill bit coupling within closer proximity to the offset transmitter housing. Thereafter, the drill string is carefully rotated to reposition the orientation of the offset transmitter housing from 1.degree. to 359.degree. from its previous position following which forward drilling again proceeds.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
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International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Heims, Bruce | 101 E. Linn St. P.O. Box 185, Coggon, IA 52218 | 2 | 40 |
Morris, Waldo | R.R. 2, Marion, IA 82302 | 2 | 40 |
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Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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