Boring or penetrating the earth – Boring without earth removal – Fluid passage to exterior of drive point
Reexamination Certificate
1997-11-12
2001-04-03
Neuder, William (Department: 3672)
Boring or penetrating the earth
Boring without earth removal
Fluid passage to exterior of drive point
C175S061000, C175S399000, C175S400000
Reexamination Certificate
active
06209660
ABSTRACT:
TECHNICAL FIELD
The present invention relates to earth drilling, and more particularly to horizontal directional drilling.
BACKGROUND ART
This invention relates to directional drilling systems. These systems are primarily applicable to horizontal directional drilling, and more specifically to earth and rock formation boring. Low pressure, high volume fluid conduits within the boring bit body are provided for the purpose of lubricating the bit and suspending spoils.
The system of the present invention is designed for lateral or horizontal directional drilling, where it is necessary to bore or drill through an earth-bound formation, such as rock, and still remain directable. This industry, sometimes called “trenchless digging,” installs utilities around immovable objects, such as roadways, rivers and/or lakes, etc. The conventional boring technique traditionally operates from a boring device or machine that pushes and/or rotates a drill string consisting of a series of connected drill pipes with a directable drill bit to achieve an underground path or direction through which a conduit or utility device can be installed. A sonde immediately follows the drill bit as it is directed over or under or around obstructions. The sonde transmits electronic positioning signals to a worker on the surface above the sonde by way of a complementary receiving device.
Traditional methods of drilling include a drill body and a drill blade of some type that is usually concentric in design and creates a cylindrical hole about the same diameter as the drill blade. The prior art methods and devices typically use high pressure high velocity jetting to create steerability and cooling of the drill body and blade. My invention uses fluids for the purpose of lubricating and suspending the spoils, as is common in most oilfield-related drilling, and fluids are not used in any way to steer the product by way of jetting.
A severe drawback of all pre-existing horizontal drilling systems is the inability to drill through rock. Prior to my invention, it was accepted in the industry that most rock formations simply could not be drilled, because the rock is too hard. My system, however, has revolutionized thinking along those lines and has been proven to drill through every type of rock formation, even granite. In addition, my system has operational advantages when used to drill less-challenging formations such as soil or sand.
SUMMARY OF THE DISCLOSURE
My directional earth boring system for boring all earth formations such as dirt, sand, rock or any combination of formations, utilizes a bit body containing fixed and semi-floating cutting points and one or more fluid channels for the purpose of lubricating and dispersing cut and/or fractured formations.
In contrast to present drill bit devices or tools, the heel-down method of attachment to the drill body helps to create a random elliptical orbital motion that causes a high impact fracturing action when used in conjunction with the thrust and rotation movement of the associated drill string.
The system is directly related to the size and weight of all the associated drill parts in conjunction with the boring technique utilized. In other words, the exact upper limits of capabilities of this drill bit system are unknown at this time, due to the fact that new techniques or procedures of operation through multiple formations are being developed every day.
A longitudinal shear relief structure between the drill bit and the sonde housing is provide to absorb the enormous shear stresses place on the bit.
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“Brochure for Barbco Directional Tooling”, Barbco, Inc., Undated.
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Neuder William
New Railhead Manufacturing, L.L.C.
Thompson Daniel V.
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