Flexpower deep well drill
OwnerDaniel E. Nelsoninventor
Life of this patent
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Abstract
This is a deep well drill employing a Nelson air motor, a Nelson engine or other air motor for drilling power at the face of a petroleum or other deep well and having a cable and tube attached thereto and suspended from spools on a drill rig. A cutting container is attached to the drill to remove cuttings without mud. Drills for varying types of rock strata are provided. A type of foldable casing employed permits the use of the same diameter casing throughout the entire well of any depth, including deep wells to over 25,000 feet. Expandable bits at the end of the cable are provided for drilling selectively larger diameters for foldable casing walls and for safety valve and flow control anchors. The bits are also contractable for unobstructed travel up and down the well.
Claims16
A well-drilling device having a drill motor, a drill bit attached to a drive shaft of the motor in rotatable contact with the housing of the motor, a drill guide from which the bit is extended in contact therewith from the bottom end thereof, a cable attached to the guide, a hydraulic supply line attached at one end to the motor in inlet port relationship therewith and attached at the other end to a fluid supply source, a cable spool onto which the cable can be wound and unwound to allow the drill guide and bit assembly to be raised and lowered respectively, and an exhaust return conduit attached to the motor in outlet port relationship therewith.
A well-drilling device having a drill motor, a drill bit attached to a drive shaft of the motor in rotatable contact with the housing of the motor, a drill guide from which the bit is extended in contact therewith from the bottom end thereof, a cable attached to the guide, a cable spool onto which the cable can be wound and unwound to allow the drill guide and bit assembly to be raised and lowered respectively, a hollow cylindrical cutting sock in cutting receiving relationship to the upper end of the drill guide, a sock fastening and unfastening means parallel to the axis of the sock, a cutting conveyance means, an emptied sock holder, conduits attached to the cable appropriately for conveying various required fluids and electrical current, transverse cutters extendable radially from the drill guide in opposing reaction to rotary motion of the drill motor and drill bit, an expandable cutting diameter bit with attachment arms pivotably attached to the drive shaft of the drill motor, and a bit cutting diameter control piston with a shaft extended therefrom in lever arm actuation relationship to cutters of the bit in expandable and contractable working relationship therewith.
Dependencies are inferred from the claim text.