Transition from DjVu to PDF Documents for Viewing Oil and Gas Images
- Experienced users of the KGS oil and gas database search will notice that the well documents view has transitioned from DjVu format to PDF and JPEG formats.
- Why was this done? Over the past several years, DjVu has become a decreasingly popular document compression standard, and support for viewing DjVu on multiple platforms has decreased. The decision was made to convert all the oil and gas documents to PDF and JPEG format. PDF documents are provided for the page-sized well documents and strip logs, and JPEG graphics are provided for users to preview E-logs. PDF was selected for the well documents because the format is more widely used than DjVu, are available for viewing in most modern browsers without a plugin, can be viewed on mobile devices, and can be downloaded and viewed in stand-alone applications. JPEG format was selected for the E-log preview because it is a highly compressed image format that can be viewed quickly on any device or platform.
- How to view well documents: On the results list from an oil and gas records search, you will find a link to the PDF of well documents (if available) under the "Page Documents (PDF)" column (see below). This PDF will display any page-sized documents and strip logs for that record:
If the PDF is too large to view easily within your browser (takes awhile to load), it can be downloaded to your computer by right-clicking and using your browser download functionality.
- How to view E-logs: If E-log(s) are available, a link will appear under the "E-log View" column. Click this link and a new page will open with a list of the E-Logs and a preview graphic for the top of the E-log (usually the E-log header). Click the image and a full JPEG of the E-log will open in a new window for browsing the E-log. The full, original tiff image of that E-log can be downloaded using the download link next to the header graphic:
If LAS files are available, those will be available to download towards the top of the page.
- Use the feedback form if you have any questions or concerns.
A word about image quality:
- Images are scanned reproductions of the documents in the archive. Poor image quality
is usually the result of poor original documents, not the scanning process. KGS will
do as much as it can to get the best readable image possible, but the final product may
not be satisfactory for every user. KGS will maintain a database, accessible from the
KGS Web site, which will indicate the level of quality assurance for each record. If
you access a record that is unreadable and it has not yet received the highest level
of quality assurance, please contact KGS and let us know the image number(s); KGS will
attempt to provide a better copy.
- Users are forewarned that they use these documents at their own risk and they should
check the accuracy of the data contained within.
- The Kentucky Geological Survey strives to provide accurate and up-to-date information.
It is not possible, however, for KGS staff to check every document, and we rely heavily
on our customers and users to help us correct errors and omissions. Please notify KGS
to have problems corrected. Your cooperation is appreciated. THE KENTUCKY GEOLOGICAL
SURVEY DISCLAIMS ALL WARRANTIES, REPRESENTATIONS, OR ENDORSEMENTS, EXPRESSED OR IMPLIED,
WITH REGARD TO THE INFORMATION CONTAINED WITHIN THESE DOCUMENTS. The files are updated
regularly, and information may be added or removed as necessary and without prior warning.
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