Grupo Carso Lifts Zama Stake With $75 Million Buy From Harbour

The move supports Harbour’s plan to start 2026 engineering work on a leaner design that could link Zama with the nearby Kan discovery.

Overview

Grupo Carso’s energy unit Zamajal agreed to buy an additional 5% of the shallow‑water Zama oil field from Harbour Energy for $75.25 million.
Carso said most of the money will fund field development, and the transaction still requires corporate and government approvals before it can close.
If approved, ownership would shift to Pemex at 50.43%, Harbour at 27.26%, Zamajal at 17.84%, and Talos at 4.47%.
Harbour, which now operates Zama, is refining the project and targets front‑end engineering and design in 2026, exploring a joint plan with the nearby Kan find to lower costs and execution risk.
An external audit cited by Talos estimates Zama holds 735 million to 950 million barrels of oil equivalent recoverable, with potential output above 160,000 barrels of oil equivalent per day once fully developed.