Premier COREX Sample Library

70 Million Reasons to Choose Better Wells

Premier Sample Library (PSL)—North America’s largest and most advanced commercial repository of core cuttings and geological samples. Housing over 70 million samples from more than 150,000 wells, PSL is the industry’s most comprehensive resource for subsurface analysis and decision-making.

Spanning 30,000 square feet of dedicated storage, our sample collection focuses heavily on the Permian Basin, including almost every county in West Texas, with thousands more wells from Oklahoma and New Mexico. Whether your project is onshore or offshore, PSL empowers smarter planning—from well location and spacing to stage placement—with unparalleled regional coverage.

Our samples are more than rock—they are the foundation for high-resolution chemostratigraphic studies, supported by Premier’s cutting-edge XRF and XRD workflows. By integrating this data with reservoir and well performance insights, we help operators illuminate the subsurface to reduce uncertainty and drive profitability.

Data-Driven. Sample-Supported. Premier Delivered.