The discovery was made via the Stones-3 well, drilled to perform the exploratory assessment of the Stones discovery, which is operated by Anglo-Dutch energy major Shell and located in Block WR508, in ultra-deep Walker Ridge Quadrant waters.
Petrobras America holds a 25% stake in the block. The remaining partners in the development, in addition to Shell with 35%, are Marathon and Eni, with a 25% and 15% stake, respectively.
The Stones-3 well is located at a depth of 2,286m from the water line and has reached a total depth of 8,960m under the sea bed, finding oil in multiple reservoirs. Future drilling and assessment activities are being planned to define this discovery’s size and commercial viability.
Petrobras noted that this result confirms the potential existence of significant oil reserves in this type of reservoir in the Gulf of Mexico, where it operates the Cascade and Chinook fields, which are in the production development and facility construction phase.
