Self-propelled deep well turbine drill

Details Self-propelled deep well turbine drill Self-propelled deep well turbine drill

1976-07-06

1977-11-29

Purser, Ernest R.

Boring or penetrating the earth

With below-ground tool drive prime mover

With below-ground feed means

175107, 175344, E21B 106

Patent

active

040601412

ABSTRACT:
A deep well drill is disclosed which utilizes as a prime mover a multistage hydraulic turbine. The system is self-propelled by means of a cylindrical clam shell assembly. The shell sections are spread apart and locked against the surrounding wall of the drilled hole by means of hydraulic cylinders. A hydraulic motor drives the turbine and drill assembly by means of a threaded shaft downward until fully extended. The clam shell is then retracted, and by reversing the hydraulic motor, follows the turbine drill downward until the start position is reached and the cycle is repeated.

REFERENCES:
patent: 1790460 (1931-01-01), Capeliuschnicoff
patent: 2712920 (1955-07-01), Cullen et al.
patent: 2937007 (1960-05-01), Whittle
patent: 3180437 (1965-04-01), Kellner et al.
patent: 3554603 (1971-01-01), Kampf-Emden et al.
patent: 3797589 (1974-03-01), Kellner et al.
patent: 3888319 (1975-06-01), Bourne, Jr. et al.

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