Key facts
- Well
- Sandia-1
- Block
- GUA-OFF-O
- Water depth
- 1,251 m
- Distance from shore
- 42 km
- Drilling start
- 12 June 2026
- Target depth reached
- 29 July 2026
Background
Brazilian state-controlled energy company Petrobras has identified a new natural gas deposit at the Sandia-1 exploratory well in deep waters off the coast of Colombia. The well is located within Block GUA-OFF-O, nearly 42 km from the shoreline in water depths of 1,251 m.
Drilling at Sandia-1 began on 12 June 2026 and reached the target depth by 29 July 2026. The Sandia-1 site is positioned 18 km from the earlier Sirius-1 and Sirius-2 wells, and 9 km from the Copoazu-1 discovery, all in the same region offshore Colombia.
Operations in Block GUA-OFF-O are managed by Petrobras' subsidiary, Petrobras International Braspetro-Colombia Branch, which holds a 44.44% operating interest, while Ecopetrol owns 55.56%.
Current situation
Zones where gas was detected at Sandia-1 are currently undergoing evaluation using well logging, with further analysis planned in the laboratory. The proximity of these wells is said to highlight the area's gas potential, with the new discovery expected to contribute additional resources for regional energy needs.
Petrobras noted that its exploration work in the block is part of a broader strategy to replenish oil and natural gas reserves and support energy supply during the ongoing transition in global energy markets.
| Entity | Distance from Sandia-1 | Interest |
|---|---|---|
| Sirius-1 | 18 km | — |
| Sirius-2 | 18 km | — |
| Copoazu-1 | 9 km | — |
| Petrobras (operator) | — | 44.44% |
| Ecopetrol | — | 55.56% |
Impacts
The discovery could add to the natural gas resources available for regional energy needs, potentially benefiting Colombia and neighboring markets. The proximity to Sirius-1, Sirius-2, and Copoazu-1 suggests a concentrated gas-bearing area, which may improve the commercial viability of future development.
Petrobras' continued exploration in the region aligns with its strategy to replenish reserves, which could support long-term energy supply. The involvement of Ecopetrol as majority partner means any future development would likely involve joint investment and shared revenues.
Future outlook
Scenario analysis: The possibilities below are not certain predictions.
If laboratory analysis confirms the gas zones are commercially viable, Petrobras and Ecopetrol could proceed with appraisal and development plans. However, the timeline for such steps remains unclear, as evaluation is still in early stages.
Should the discovery prove significant, it may contribute to Colombia's energy security and reduce reliance on imports. Conversely, if further analysis reveals non-commercial volumes, the well may be plugged and abandoned, with no immediate impact on supply.
The broader context of Petrobras' strategy suggests continued exploration in the region, but any production from Sandia-1 would likely be years away, pending technical and regulatory approvals.
Source: yahoo.com
