Petro Victory Energy has identified 72m of gas pay within a 280m gross hydrocarbon interval at the 7-SJ-12DA-MA well (SJ-12) at its 100%-owned São João field in the Barreirinhas Basin, Brazil.
The well, which was spudded last month, revealed hydrocarbon-bearing sections across five zones within the Bom Gosto-Arpoador formation.
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Detailed analysis, supported by wireline logs, petrophysical studies and mud logging, confirmed the presence of gas pay in the well.
Additionally, 45m of oil shows were identified in the shallower Barro Duro-Tutoia and Bom Gosto-Arpoador formations.
According to Petro Victory, these findings validate its subsurface model and suggest robust potential in the region.
Petro Victory Energy CEO Richard F. Gonzalez said: “The SJ-12 well significantly exceeds our expectations and marks a major milestone in the development of the São João field.
“We have confirmed a robust and active petroleum system, with clear stacked pay potential. These results validate our subsurface model and reinforce our confidence in the field’s scale and long-term value creation.”
The SJ-12 well reached a measured depth of 3,180m, intersecting both the Barro Duro-Tutoia and Bom Gosto-Arpoador formations.
The company identified five net pay zones within a stacked gas reservoir, revealing a net reservoir of 125m among the 280m gross interval.
A comprehensive wireline evaluation incorporating resistivity, density, neutron and sonic logs was conducted. This was complemented by formation testing and Mechanical Sidewall Coring Tool sidewall cores.
The evaluation confirmed pressure continuity, and gas samples were collected at depths of 2,682.4m and 2,975.3m, displaying low-density characteristics indicative of gas-phase hydrocarbons.
Petro Victory Energy said that drilling operations utilised advanced rack‑and‑pinion hydraulic drilling technology with a hook load capacity of 551,000lb.
The operation concluded with the installation and cementing of a 4.5in production casing, before releasing the drilling rig.
Further testing of the SJ-12 well is planned by the company.
The São João Field, according to an independent reserve and resource report by GLJ from December 2024, is estimated to hold 50.1 billion cubic feet of risked, best estimate development pending contingent resources of non-associated gas.
