Brazilian state-owned energy company Petrobras has announced a new natural gas discovery at the Sandia-1 exploratory well, situated in the deep waters of Block GUA-OFF-0 off the coast of Colombia.
The Sandia-1 well was drilled approximately 42 kilometres off the Colombian coast in a water depth of 1,251 metres. Located 18 kilometres from the existing Sirius-1 discovery and Sirius-2 appraisal wells, and nine kilometres from the Copoazu-1 discovery, the find reinforces the significant natural gas potential of the offshore basin and is expected to bolster regional energy security.
Drilling operations commenced on June 12 and reached final depth on July 29. Petrobras confirmed that gas-bearing zones identified during drilling are currently undergoing detailed evaluation via well logs, with core samples set to undergo further laboratory testing to determine exact volumetric potential.
In an statement, Petrobras highlighted that its exploration activities in Block GUA-OFF-0 align with its broader long-term corporate strategy. The state energy producer aims to replenish its oil and gas reserves through targeted exploration in new frontiers and strategic international partnerships, helping meet global energy demand throughout the ongoing energy transition.
Petrobras operates the offshore consortium through its subsidiary, Petrobras International Braspetro B.V. – Colombia Branch (PIB-COL), holding a 44.44 per cent working interest. Colombian state oil firm Ecopetrol S.A. holds the remaining 55.56 per cent majority stake in the joint venture.
The discovery represents another milestone in Colombia’s deepwater exploration campaign as the nation seeks to expand its domestic gas supply to meet growing residential and industrial power demands.

