The Permian Basin is undergoing a quiet evolution. As global demand for critical minerals intensifies, oil majors and oilfield service companies across Western Texas are shifting their attention toward an unconventional resource: mineralized oilfield brine. Operators are racing to extract high-value lithium from “produced water”, the massive volumes of brackish water brought to the surface during hydrocarbon extraction.
While Direct Lithium Extraction (DLE) technology is rapidly advancing, the underlying legal infrastructure in Texas faces a unique hurdle. Although the Supreme Court of Texas clarified in Cactus Water Services, LLC v. COG Operating, LLC that the physical produced water stream belongs to the oil and gas lessee as an incident of the lease, a complex question remains: Who legally owns the dissolved non-hydrocarbon metallic elements, like lithium, contained within that brine?
The overlapping claims for mineral solutes
Under longstanding Texas property law, ownership of a subsurface resource depends heavily on its classification. Because lithium extraction from produced water is an emerging industry, a regulatory vacuum exists regarding the executive rights to these valuable solutes:
- The surface owner’s claim: Historically, Texas common law dictates that groundwater belongs to the surface estate. Surface owners rely on Robinson v. Robbins Petroleum Corp. to argue that because the water matrix belongs to them, they maintain a claim to the substances dissolved within it.
- The mineral estate’s claim: Conversely, the mineral estate holds the rights to oil, gas, and other valuable minerals. Mineral lessees argue under Moser v. United States Steel Corp. (1984) that because lithium is a valuable metallic element within the ordinary meaning of a mineral, it belongs inherently to the mineral estate.
While the Cactus Water ruling confirmed that operators own the produced water stream as oilfield waste, the explicit title to the non-hydrocarbon minerals suspended inside that water was expressly left unresolved by the court.
Mitigating title risks in Western Texas
For energy corporations in the Permian Basin, this statutory ambiguity creates immense title exposure. Moving forward with an expensive DLE facility without clearly defining solute ownership can result in catastrophic conversion lawsuits.
To mitigate these structural risks, parties entering into new energy agreements must explicitly address brine and solute ownership at the negotiating table. Drafting customized “dual-utilization” agreements that clearly allocate extraction rights and royalty structures among surface owners, mineral owners, and active operators is the only way to insulate a multi-million-dollar operation from future litigation.