Method for improving the accuracy of dip determination using adj

Details Method for improving the accuracy of dip determination using adj Method for improving the accuracy of dip determination using adj

1991-05-15

1993-08-24

Snow, Walter E.

Electricity: measuring and testing

Of subsurface core sample

324351, G01V 334, G01V 338, G01V 318, G01V 300

Patent

active

052392678

ABSTRACT:
The present system is directed to an improved dipmeter system including plural sensors on isolated pads around a sonde. An independent output is formed from each of the sensor pads, and each output is provided to its own adjustable high pass filter. The several high pass filters delete low frequency constituents in the sensor signals. Then, the signals are provided to a dipmeter computer to determine depth with greater accuracy. As a variation, the high pass filters can be selectively adjusted to provide an adjustable frequency for the filters, and one version utilizes the derivative of the dipmeter signal as a function of velocity or time.

REFERENCES:
patent: 3405350 (1968-10-01), Tanquy
patent: 3638105 (1972-11-01), Shuster
patent: 3691456 (1972-09-01), Warren

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