Aurelian Oil & Gas reported that the first Siekierki Multi Fracced Horizontal Well (MFHW) Trzek-2 has begun the stabilized flow rate test at its Siekierki tight gas project in the Southern Permian Basin of Poland.
The stabilized flow rate test was delayed by two weeks due to mechanical problems during well clean up. Gas inflow in six of the ten well bore sleeves is currently restricted. The likely cause is either clean up debris lodged in sleeve ports or sleeve ports being temporarily closed.
Nonetheless, reservoir quality is good, with tracers confirming that gas was recovered from all ten fracced zones during initial production test. Down hole logs also confirm good quality reservoir throughout horizontal wellbore.
If these well bore sleeve mechanical problems persist after the end of the stabilized flow test, appropriate remedial work will be undertaken.
The stabilized rate at the end of the 14-21 day test is likely to be less than the 8mmscf/d that the Company had originally expected. However, good reservoir quality indicators and expected lower production decline rates means that Aurelian should still recover 16-28 bcf from this well and 346 bcf (net) from 20 wells across the full project.
"Whilst the mechanical performance of the down hole and completion equipment on Trzek-2 has been disappointing, we believe that this can be corrected, will not recur in the future and will not impact the potential of our Siekierki Tight Gas Project,” said Rowen Bainbridge, chief executive of Aurelian. “The Trzek-3 well is performing better than we had hoped and we will have stabilized flow rates from both MFHWs by the end of June/beginning of July which will help us optimize the development of this key project.”
Additionally, the second Siekierki MFHW and the Trzek-3 are drilling ahead of schedule.
Furthermore, Aurelian has gained confirmation that there will be no restrictions on the development of Polish unconventional gas.
Henryk Jesierski the Chief Geologist at the Polish Ministry of Environment confirmed at a conference held at the British Embassy in Warsaw on March 16, 2011, that Poland will not be blocking unconventional and shale gas development.