Methods and apparatus for recording well logging measurements

G - Physics – 01 – V

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354/236.22, 314/

G01V 1/40 (2006.01) G01D 9/00 (2006.01)

Patent

CA 1052473

ABSTRACT OF THE DISCLOSURE In accordance with illustrative embodiments of the present invention, well logging data in analog or digital form is recorded by a cathode ray tube recorder. A rep- resentation of the CRT beam is repetitively swept across a recording medium while being modulated with representations of the well logging signals. This modulation varies as a function of the rate of change of the well logging signals to produce an even density recording. Coding of the recorded lines or traces and the areas between selected traces can be accomplished. This coding of the lines is also varied in dependence on the well logging signal rate of change to produce a uniform coding presentation. Depth information can be recorded on the recording medium by writing depth numbers and depth lines on the record medium. Moreover, a section by section visual presentation of the data can be produced while it is being recorded.

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