Boring or penetrating the earth – Automatic control – Of boring means including a below-ground drive prime mover
Patent
1974-06-04
1977-02-15
Purser, Ernest R.
Boring or penetrating the earth
Automatic control
Of boring means including a below-ground drive prime mover
175 61, 175 81, 173149, E21B 708
Patent
active
040077977
ABSTRACT:
The device disclosed includes a housing which can be moved through the bore hole and anchored in the desired location for drilling a lateral hole. Located in the housing is a drill string guide or conductor having a bendable lower end. The conductor is movable to a position where its lower end is either inherently or forceably bent so that it provides a curved path leading toward the side wall of the bore hole. The conductor guides a drill string extending through the conductor to cause the drill string to drill a lateral hole in the side wall of the well bore. The drill string and conductor can be retracted into the housing when the lateral hole has been drilled, or a portion of the drill string may be left in the lateral hole as a drain pipe.
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Favreau Richard E.
Purser Ernest R.
Texas Dynamatics, Inc.
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