Aurelian is pleased to announce that the pilot section of the Trzek-2 well in its Siekierki Tight Gas project has now been completed and the sidetrack to drill the horizontal section has commenced. The pilot was drilled to obtain vertical control of the well and information on reservoir properties. Two cores were obtained in the gas bearing section and pressure data and wireline logs were obtained across the Rotliegendes to total depth at 4079m.
Analysis of the data shows improved reservoir properties compared to Trzek-1 and other wells drilled in the Siekierki structure. Summary parameters are gas column 100.4m (Trzek-1 - 91m) net reservoir within gas column 94% (Trzek-1 - 88%), maximum porosity 18.4% (Trzek-1 - 16.2%) average porosity 11.5% (Trzek-1 - 9.5%) gas saturation at top reservoir 69.9% (Trzek-1 - 66.5%).
In addition, although most of the section is tight as expected, a zone of better permeability has also been encountered close to the base of the gas column. This zone is expected to thin and rise towards the centre of the column to coincide with the location of the planned horizontal well.
The sidetrack is planned to encounter the Rotliegendes 300m from the current well and to drill up to 1500m horizontally in the reservoir. Current plans call for Halliburton to undertake a 10 stage hydraulic fracture along the wellbore but this is subject to revision on the basis of data to be obtained during the drilling of the horizontal sidetrack.
It is envisaged that the Trzek-2 Frac and Flow Test will be completed during December, in line with our original schedule and budget of €18.2 million.
The Siekierki project is located on the Poznan licences which are 100% held by Energia Zachod Sp. z.o.o., a company owned 90% by Aurelian and 10% by Avobone N.V.
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