Serving the Permian Basin for over 62 Years!

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    • Home
    • Data
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    • Membership
    • Log Search
    • Libraries
    • Contact Us
    • Make a Payment
    • RRC & BEG
    • News
    • History
  • Home
  • Data
  • Maps
  • Membership
  • Log Search
  • Libraries
  • Contact Us
  • Make a Payment
  • RRC & BEG
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  • History
Library entrance
THE SUBSURFACE LIBRARY

The Permian's Best Well Data


Our unique and extensive data collections improve decision making, reduce exploration risk and maximize reservoir performance.

Watch NewsWest9's Television Special on the history of the Western United Life Building & The Subsurface Library

Midland Map Lease & Ownership maps are in the library!

The Subsurface Library, founded in 1962, is the premier geological data source for the Permian Basin, the highest producing oil and gas basin in the United States. The library's collections include multiple suites of well data, both current and historical, that can't be found anywhere else.


The library's unique datasets include both new and old logs, unreleased logs, logs donated by independents and private companies, mud logs, sample logs with handwritten descriptions, handwritten scout tickets and scout cards.


The library's well log index, Amerada scout tickets and Kroenlein scout cards are searchable by location on our website.

Scout ticket collections

Our Collections Include:

  • Over 1,000,000 Well Logs
  • Over 25,000 Sample Logs, 30,000 Sample Descriptions & 15,500 Mud Logs
  • 8 Scout Ticket Collections
  • 4 Scout Card Collections 
  • Midland Map Lease & Ownership Maps with Current Well Spots
  • IHS Production & Well Data + Drilling Wire

Discover Some of our Unique Datasets

Unreleased Well Data Donated by Companies such as:

Great Western Drilling, Marshall & Winston, Bruno & Marshall Investments, Antlers Exploration, David Petroleum Corp, Bettis Brothers, Rio Pecos Corp., Fort Worth Oil Information Library, Meadco Properties, Ted Collins & Associates, Marathon Oil, Midland Oil Scouts Association, Permian Basin Sample Lab, Amerada Petroleum, American Republic, Argo, Mobil, Sinclair, Western Natural Gas and many other anonymous donors.

Our Memberships Include:

  • Reciprocity with 12 other geological data libraries in Texas, New Mexico, Oklahoma & Colorado.
  • Access to Well Data from the Texas Railroad Commission, Bureau of Economic Geology, General Land Office & University Lands.
  • Geotech & Reproduction Services inside our own 18,000' building in downtown Midland. Conference room available for member use.

Copyright © 2025 THE SUBSURFACE LIBRARY - All Rights Reserved.

600 W. Ohio Ave. | Midland, TX 79701

432-683-5588

info@subsurface.info