Electrical phase measurement means and method for accurate deter

Details Electrical phase measurement means and method for accurate deter Electrical phase measurement means and method for accurate deter

1987-10-21

1989-02-07

Tarcza, Thomas H.

Communications: electrical

Continuously variable indicating

With meter reading

367 33, G01V 140

Patent

active

048034797

ABSTRACT:
A method and apparatus for determining the vertical location of a logging tool in a wellbore is disclosed. An electrical signal is transmitted through a conductor in a well logging cable and a second conductor in the surface. Change in length of the well logging cable is determined by monitoring phase changes in the signals from the first and second conductors.

REFERENCES:
patent: 4328567 (1982-05-01), Dodge
patent: 4450540 (1984-05-01), Mallett
patent: 4555175 (1985-11-01), Gardner et al.
patent: 4597183 (1986-07-01), Broding
patent: 4612536 (1986-09-01), Harman

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