Down-hole drilling apparatus

Details Down-hole drilling apparatus Down-hole drilling apparatus

1982-11-26

1984-08-07

Purser, Ernest R.

Boring or penetrating the earth

With signaling, indicating, testing or measuring

Tool position direction or inclination measuring or...

175 61, 175 94, 166212, E21B 4702

Patent

active

044638140

ABSTRACT:
A down-hole drilling apparatus having a drill tool assembly with a cutting head at one end connected to an umbilical which extends to a retrieval reel on the surface. The umbilical provides electrical power, drilling fluid and means for instrumentation and control signals to be transmitted between the drill tool assembly and a processing device on the surface. The drill tool assembly can propel itself into or out of a bore hole by the cyclical actuation of anchor and ram units or change the direction of drilling by actuation of thruster assemblies in response to control signals sent manually by an operator or automatically by the processing device.

REFERENCES:
patent: 2167194 (1939-07-01), Anderson
patent: 3185225 (1965-05-01), Gines
patent: 3224513 (1965-12-01), Weeden, Jr.
patent: 3599712 (1971-08-01), Magill
patent: 3992565 (1976-11-01), Gatfield
patent: 4095655 (1978-06-01), Still
patent: 4385021 (1983-05-01), Neeley

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