RE: Excellent results12 Nov 2025 10:40
Posted on another board...
I'm glad they have hit a good oil play, it's reasonable to assume Mateguafa Attic should now add nicely to production
Echoed by Co-pilot fwiw,
Reservoir and test summary
Lithology: Clean sandstone, minimal clay; reliable log response and favorable flow characteristics.
Porosity: 22% average; strong storage capacity and typically supportive of good permeability in clean sands.
Resistivity: High; consistent with low 𝑆𝑤 and hydrocarbon-filled pores.
M-5 test result: ~570 BOPD gross on a 17/128 choke and 30 Hz pump frequency; ~285 BOPD net, 31° API oil, 8% water cut trending down (cleanup).
Flow potential under optimized drawdown
Current constrained rate: ~570 BOPD gross under tight choke and modest pump, indicating strong productivity even at limited drawdown.
Near-term optimization potential: ~800–1,100 BOPD gross is a reasonable range with progressive choke relaxation and pump optimization, contingent on sand control, mechanical limits, and water management.
Basis: Clean sand, high resistivity (low 𝑆𝑤), declining water cut (completion fluid cleanup), and robust early productivity suggest capacity for higher stabilized rates.
Potential: In the same clean sandstone setting, horizontals are likely to achieve gross rates in the ~900–1,800+ BOPD range, consistent with Arrow’s recent horizontal outcomes in the Llanos Basin. With reservoir quality similar to M-5 and declining WC, well-placed laterals should outperform optimized verticals by roughly 1.5–3×