Monday, July 13, 2026

Repsol and Armstrong Energy Announce Largest U.S. Onshore Conventional Hydrocarbons Discovery in 30 Years

Horseshoe-1: massive Alaska North Slope oil discovery Repsol (ticker: REP) and privately held Denver based Armstrong Energy LLC announced today the discovery of a massive oil field in Alaska, with an estimated 1.2 billion barrels of oil recoverable. This is the largest U.S. onshore conventional hydrocarbons discovery in the last 30 years, Repsol said in a press release. Drilled during