Poland - West Carpathian Basin

Located within the Carpathian thrust – fold belt in southern Poland, the Bielsko – Biala Concession occupies an area of 804.6km2. In 1984, the Polish Oil & Gas Company (POGC) drilled the Lachowice-1 well in the southern part of the concession and encountered 184m of Devonian gas bearing carbonates (no water column). By the mid 90’s, a further seven wells had been drilled on the highly compartmentalised structure and of the five that reached the fractured Devonian carbonates and sandstones, all encountered gas columns/shows.

The Lachowice field is at a late stage of the appraisal/early stage of the development life cycle. Lachowice-1, Lachowice-7 and Stryszawa-2K are the primary wells of interest on the field and, despite being essentially vertical in their design, showed test rates of up to 5.8mmcf/d, 8.9mmcf/d and 2.5mmcf/d respectively (90-95% methane). Some years after completion the wells were re-tested and despite not having being remediated or acidised, they still flowed economic rates even through completions sub-optimal for this type of reservoir (cemented and perforated liners).

Indicative volumetric calculations suggest commercially attractive levels of proven resource with the potential for significant exploration upside. The geology of the structure provides the opportunity for development wells to potentially assess some of the upside in neighbouring fault blocks without the need for dedicated exploration wells. A range of scaleable development options exist for Lachowice, from re-entry to the existing suspended well (Lachowice 7) through to a programme of multiple highly inclined wells and/or sidetracks.

The Tertiary belt of prospectivity (associated with nappes and thrust belt positions) trends eastwards from Cieszyn, into the northern part of the Bielsko-Biala concession, where this interval is significantly under-explored relative to the Czech side. It therefore presents an additional opportunity to focus an exploration programme on the identification and testing of seismic amplitude anomalies in the shallow Miocene section, already proven to the west, within the Bielsko-Biala concession.

Neighbouring the Bielsko-Biala concession, the Cieszyn concession occupies a 325km2 area of the Carpathian thrust – fold belt in southern Poland. This concession has seen significant historic exploration and whilst prospectivity exists at both Palaezoic and Tertiary levels, much of the activity has focussed on the relatively shallow (400 - 800m) Miocene clastics trapped in thrust belt structures.

Numerous Miocene gas discoveries have been made in and around the concession (Debowiec-Slaski, Kowale, Pogorz) with even more along trend on the Czech Republic side (Horni Zukov, Bruzovice -Frydek, Pribor, Choryne). The quality of seismic imaging, and low exploration well cost, presents an attractive opportunity to define a future work programme to fully evaluate this concession.


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