Push drill guidance indication apparatus

Details Push drill guidance indication apparatus Push drill guidance indication apparatus

1982-09-24

1984-06-05

Birmiel, Howard A.

Measuring and testing

Borehole or drilling

Downhole test

33312, 33313, 175 45, 299 1, 367 81, 340858, G01V 140, E21B 4702

Patent

active

044520751

ABSTRACT:
The present invention relates to a program controlled apparatus for providing rapid calibration and update of sensor parameters in a push drill guidance apparatus which is remotely controllable from microprocessor circuitry. A special calibration program is set into non-volatile memory for coaction with the control processor to compute sensor parameters for storage and recall during normal programmed guidance operation.

REFERENCES:
patent: 3907045 (1975-09-01), Dahl et al.
patent: 4303994 (1981-12-01), Tanguy
patent: 4361192 (1982-11-01), Trowsdale
patent: 4393485 (1983-07-01), Redden

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