Most test wells have some type of lithologic logs which have been placed on open file. Some confidential lithologic logs may be obtained by contacting the company that provided the core and obtaining written permission to have the lithologic log released. University students borrowing core and samples for use in reports, research or theses, sign a special use agreement form. They must have their major professors take full responsibility, in writing, to see that all materials are returned in good condition and all necessary reports, research, etc. are submitted to the Geological Survey Division in a timely manner. Location information for each well is given by township, range and section.
Some wells have more precise locations given on the lithologic logs.
The footage shown for each well is the footage of core we have in storage. Occasionally, we only have a portion of the total core or cuttings from the hole that was drilled. The Geological Survey Division requests corrections, additions, missing information and comments from you, the user. We need your help to keep the core and sample inventory list as accurate as possible. Additional Collections return to the top of this document The GSD also maintains oil and gas well cuttings from over 10,000 wells drilled prior to 1994 and over 50,000 drillers logs and thousands of geophysical logs.