Abstract
This article introduces a conversion method from paper-based seismic profiles to SEG-Y formatted degital data. This method employs two free software, NetPBM and Seismic Unix which work on Unix-like OS. The principle is 1) scanning paper-based profiles to obtain pixel images conposed of 8 bit charactor, 2) conversion of trace data format from character to floating and 3) paste of SEG-Y header to floating trace data. Paper-based profiles drown by line scan recorder were successfully converted to trace-by-pixel SEG-Y data. Paper based wiggle profiles were converted firstly to trace-by-pixel SEG-Y data, and then to trace-by-trace SEG-Y data, by using horizontal trace sum of trace-by-pixel data. Quality of these data was examined and proofed that they are tolerable to be used, though they have restriction of paper. SEG-Y convertied data would provide additional analyses; deconvolution, migration, seismic attribute analyses, and would be ready for interpretation softwares.
