Key Takeaways SHEL and its partner confirmed high-quality oil at the Nashville well in the Norphlet formation. INEOS Energy holds a 21% stake, calling the discovery a key step in expanding its US Gulf presence.SHEL operates the well with a 79% stake using the Deepwater Proteus rig, while its partner holds 21%.Shell plc (SHEL) , a London-UK-based integrated oil and gas company, and INEOS Energy have announced a significant oil discovery in the Norphlet formation in the Gulf of America. The exploration well, ...