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The ODNR Division of Geological Survey recently initiated a program to digitally scan paper copies of geophysical logs. While not all of the geophysical logs in the division's collection—approximately 70,000 suites of logs—are available, the division has been scanning all logs submitted to it each year since 2002.
Raster Format
Raster-format digital logs simply are scanned images of the logs saved in TIF format. Features include:
- Use with software applications for automatic or semiautomatic creation of cross-sections and other custom displays.
- Large file size—500 KB for a shallow well up to 80 MB for a deep well with color.
- Image quality depends on quality of original image. (E.g., if paper copy of log is dark, washed out, or smudged, these same deficiencies will be evident in the digital image.)
Click here to access a spreadsheet (.xls file) containing a list of available digital logs, log abbreviations, logging company abbreviations and an explanation of scanning procedure. Use these materials to choose which digital logs you would like to order.
Geophysical Log Pricing
| Digital files on CD-ROM |
$2.00 per log; $20 minimum order |
Paper prints of
scanned logs |
$4.00 for entire well with TD of <4,000 ft. |
| $6.00 for entire well with TD of 4,000–6,000 ft. |
| $8.00 for entire well with TD of >6,000 ft. |
The Division of Geological Survey actively seeks out geophysical logs to help build its archives. Click here to learn more about donating oil and gas logs.
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