
Cybinka and Torzym, Poland
Blocks 202/222 and 203/223
Interest: 35%
Operator: Aurelian
The Zechstein plays
The Zechstein formations are rock salt, anhydrite, dolomite carbonates and shales deposited in a shallow Permian sea 250 to 270 million years ago. Poland has a long history of successfully exploring for oil and gas fields within these Zechstein sediments. The hydrocarbons are sourced from the shales and are frequently discovered within dolomite reservoirs.
Initially the exploration target was for reservoirs deposited in shallow water and located primarily on the edges of thick anhydrite platforms. Over the years a significant number of oil and gas fields have been discovered within this geological setting. More recently, exciting exploration successes have been made on the basinward side of the anhydrite platforms.
The first of these was the Sulecin oil field. Here, oil was discovered within slump and/or low-stand deposits located within the deeper water setting at the foot of the anhydrite platform slope.
Recent exploration success has been aided by technological advances in seismic acquisition and processing techniques. PGNiG discovered several oil and gas fields near Gorzów to the north of Cybinka/Torzym in 2003. The largest are the Międzychód and Lubiatów oil fields containing 7 billion m3 of gas and 30 million barrels of crude oil. Other discoveries include Sowia Góra, Grotów and Sieraków deposits, each containing several billion m3 of gas.
New reef oil in Cybinka and Torzym licences
Prior to Aurelian acquiring the blocks no modern exploration activity had been carried out on the blocks. Several exploration wells have been drilled but these date mainly from the 1960-1970s prior to the acquisition of any seismic data. Although oil shows were frequently encountered and non-commercial flows recorded, no significant discoveries have been made. Seismic acquisition had been confined to 2D data alone with the acquisition of vintages ranging between 1977 and 1997, however in October 2010 Aurelian acquired 220 km2 of modern 3D seismic data across both blocks which is currently being interpreted.
The more recent 2D data was of good quality and identified the general location of a significant Zechstein anhydrite platform margin, analogous to areas successfully explored elsewhere.
Hence the blocks offer Zechstein exploration potential for associated carbonated targets located both on the anhydrite platform margin and towards the base of the slope. The recent acquisition of 3D seismic data has enabled Aurelian to quantify in detail this exploration opportunity and lead to drilling of the first well in early 2012.
Current activity
- Acquisition of 220 km2 3D seismic completed August 2010
- Funded to drill one well in 2012 and one well in 2012/13
- Unexplored Zechstein oil play adjacent to recent oil discoveriesto the north requiring 3D seismic to unlock potential
- 100 mmboe fields discovered nearby to prolific BMB Area.May contain analogues to one of the largest oilfields in thecentral Lowlands of Poland, the Lubiatow complex, withreserves of 54 mmbbl of oil and 194 bcf of gas
- Basin extends from the prolific UK North Sea
Planned activity
- Drill Torzym-1 H1 2012
- Drill Cybinka-1 2012/13
Interest
Cybinka – 35%
Torzym – 35%
