San Leon logs more potential gas pays in Poland

By OGJ editors

San Leon Energy PLC has cased its Siciny-2 well in Poland’s Southwest Carboniferous basin after logging a previously unseen fourth potential Carboniferous section and a fractured tight gas sandstone.

Drilled to 3,520 m on the 100% owned, 800,000-acre Gora concession 70 km southeast of Zielona Gora, the Siciny-2 well had an initial goal of collecting core and downhole geophysical data focused on understanding the unconventional gas potential of the Carboniferous section. The well has achieved that goal, the company said.

The Carboniferous is known to be the source rock for the significant gas production in the overlying Permian Rotliegendes formation in Poland.

The stratigraphic test well reached target depth of 3,520 m after penetrating more than 1,000 m of Carboniferous section. More than 265 m of continuous core were collected across three prospective intervals identified in the Siciny-1 well. The previously unseen fourth potential Carboniferous shale section and a fractured tight gas sandstone were also encountered below 3,200 m.

San Leon will perform tight rock analysis on the core to evaluate the potential for commercial shale gas and tight gas sand production. It also obtained valuable drilling data in drilling the complex structure of the Carboniferous section, allowing the company to reduce the time and cost of drilling future wells.

While drilling, continuous gas shows (C1-C3) were encountered across the four prospective shale intervals as well as through the tight sandstone interval. Evaluation and interpretation of the core and logs is expected to take 3-4 months in preparation for future production testing.

San Leon said the well encountered a total of more than 500 m of potential reservoir and that the complex nature of the Carboniferous source rock, including natural fracturing, shows real promise for gas production.

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