Understanding oil families is no longer just an academic exercise in geochemistry. When applied at a regional and global scale, it becomes a powerful tool for predicting fluid properties, de-risking exploration, and unlocking overlooked connectivity across basins. GeoMark’s regional studies across the Equatorial and South Atlantic margins continue to reinforce a key idea: petroleum systems do not respect modern basin boundaries. Instead, they reflect shared depositional hi

For more than 30 years, GeoMark has built one of the industry’s most comprehensive geochemical databases to support oil and gas exploration and development. Today, that same foundation is being leveraged in a new way—as the industry turns its attention toward critical minerals. As the global landscape shifts toward resource security and energy diversification, operators are increasingly asking a new question: what additional value exists within the subsurface beyond hydrocar

In today’s environment of tighter margins and increasingly complex developments, oil quality is no longer a secondary variable. It directly impacts economics, facility design, and ultimately how a reservoir performs over time. At GeoMark, we’ve spent years looking at fluids from the molecule up. And one thing has become very clear: When you integrate oil family, maturity, and biodegradation, you stop describing fluids… and start predicting them.

The Pearsall Formation lies deep within the Gulf Coast stratigraphic column, positioned beneath some of the region’s most prolific...