Maurel & Prom to acquire Gran Tierra Energy’s assets in Colombia, Ecuador for $1.33 billion
Maurel & Prom agreed to buy Gran Tierra Energy CI GmbH’s Colombia and Ecuador assets for $1.33 billion, according to a Aug. 5 release. The deal would add 29,026 b/d working-interest production and 144 million bbl of 2P reserves. Maurel & Prom expects growth to about 40,000 b/d by 2029-30, with closing targeted by yearend subject to approvals.
How this was made

The 30-second read
Why it matters
The transaction increases Maurel & Prom’s working-interest production and certified reserves, expands its footprint in Colombia and adds Ecuador, and provides a stated pathway to grow production by 2029-30. For Gran Tierra Energy, it is positioned as an exit from South America to reduce debt and refocus on Canada and Azerbaijan.
Market read
This is a disclosed, large upstream M&A deal with quantified production and reserve additions and a stated production growth plan, creating a clear catalyst for valuation and execution expectations into yearend closing.
What to watch
Closing depends on shareholder approval, creditor consents, and regulatory approvals; financing terms and integration costs are not detailed here, which could materially change deal economics.
Background
Maurel & Prom (Paris-listed) agreed to acquire Gran Tierra Energy CI GmbH, which holds Gran Tierra Energy’s Colombia and Ecuador assets and operations.
Market effects
Signals continued consolidation in Latin American upstream, potentially tightening competition for operated assets while increasing focus on reserve replacement and infrastructure-led portfolios.
Adds operated production and reserves in Colombia and introduces Ecuador exposure, which can influence regional supply expectations and export routing utilization.
Large upstream transaction size ($1.33B) can affect sentiment around oilfield M&A liquidity and reserve-growth premiums, though impact is company-specific.
Counterpoint
The growth target to ~40,000 b/d by 2029-30 may be optimistic versus field decline, waterflood execution, and permitting timelines, making the valuation sensitive to operational delivery.
Key entities
- acquirerMaurel & Prom
Agreed to acquire Gran Tierra Energy’s Colombia and Ecuador assets for $1.33 billion, adding 29,026 b/d and 144 million bbl 2P reserves.
- seller_asset_vehicleGran Tierra Energy CI GmbH (GTECI)
Holds Gran Tierra Energy’s assets and operations in Colombia and Ecuador; transaction supports Gran Tierra’s debt reduction and geographic refocus.
- majority_ownerPT Pertamina Internasional Eksplorasi dan Produksi (PIEP)
Majority owner of Maurel & Prom, a subsidiary of Indonesia’s national energy company PT Pertamina (Persero).
