The Exploration License that ATLI acquired at the last quarter of 2015, lies at the east part of Thrace Tertiary Basin at the sheets of F20C2-C3-C4 with a coverage of 327,65 square kilometer (32765 hectare)
After ATLI acquired the concession block at the last quarter of 2015, primarily started to work on correlation of previous geological studies with its own geological studies and existing well data. After the correlation, ATLI created a geological cross sections.
By the re-processing and interpretation of the 2D seismic data that has been acquired starting from year 1974, structure and amplitude maps were created. After that, prospekts were defined by the correlation of these results with the geological and non-seismic geophysical studies.
ATLI spudded ATLI Kavaklı 1 at 21.09.2016, and from that date by continuing to drill back to back respectively ATLI Kavaklı 2, ATLI Kavaklı 3, ATLI Ortaköy 1, ATLI Ortaköy 2, ATLI Ortaköy 3 and ATLI Ortaköy 4 completed 7 wells in total which were targeted to Danişmen and Osmancık formations. Apart from ATLI Ortaköy 3 that we had significant technical issues, all wells resulted as gas.
As a consequence of these results, production tests were accomplished, gas sales license for 30 years from EPDK was acquired and gas sales negotiations were started.
On the other hand, raw data of Silivri 3D Project, which is approximately 270 km2, was acquired and has been re-processed. Interpretation process is still in progress.
ATLI is aiming to drill Hamitabat formation targeted at least 1 deep well in 2017. These wells will be drilled by Pi PK250 Land rig which was manufactured by ATLI Enerji’s sister company Pi Makina.
The thickness of Thrace Tertiary Basin which reaches 9000 m at the deepest parts of the basin, is close to 3000 m in concession area. Danişmen, Osmancık, Mezardere, Ceylan, Soğucak and Hamitabat formations which are rich as both source and reservoir levels in the production areas in Thrace Basin, presents also in the concession area.
After the studies initiated by TPAO in 60’s, TPAO has drilled Silivri-1 (gas show) in 1964 with a depth of 2489 m and Kadıköy-1 (dry) in 1965 with a depth of 1437 m. After these wells, TPAO shooted approximatley 300 km 2D seismic between the years 1974 – 1996 and made a gas discovery with a Silivri-2 well drilled in 1995 with a depth of 1225 m and started the production in the area. In year 2006 TPAO shooted approximatley 300 square kilometers of 3D seismic and made another gas discoveries with a Tulumba-1 well in 2009 with a depth of 700 m, and Silivri-6 well in 2013 with a depth of 700 m.
In year 2004 Merty Energy acquired a exploration block in the area and shooted approximately 300 km 2D seismic. Regarding to GnG works Merty drilled its first well Damlıca-1 (dry) in year 2010 with a depth of 1715. In year 2013 Merty drilled Çayırlık-1 well (800 m) and made a gas discovery with this well.
The Concession block that ATLI acquired at the second quarter of 2012, lies at the approximately 5 km North of 50th km of İspir (Erzurum) – Yusufeli (Artvin) where the intrusive and volcanic sedimentary rocks outcropped. The area of the license is 19,68 square kilometer (19,68 hectare).
In the license area, that the intrusive and volcanic sediment outcrops can be widely seen, there are three types of granite intrusion presents. As observed in the field, mineralization had occurred with the activities after this intrusions as a vein type by the hydrothermal activities across to tectonic lines in different directions. Also, at the west edge of the aplitic granite, there are some signs to close skarn paragenesis. According to the macro samples the main ore mineral is chalcopyrite, and according to the chemical analysis it is gold, can be said. According to mentioned chemical analyse results Au values varies between 0,001 ppm to 51 ppm and Cu values varies up to %9.
Tectonic :In Eastern Black Sea region, folds and fractures are dominated accross the East-Northeast direction. Secondarily, Northwest and North – South directions can be seen. Dome like structures has affected these directions in these areas. Based on the satellite works that have been done by ATLI, there are three dome like structure around the license area.
Mineralisation : As it is stated before, license area is covered by intrusive and volcanic sedimentary rocks. These levels were fractured in different directions, and mineralisation occured in these fractures as a vein and veinlet types. According to initial observations there is a hydrothermal vein type mineralisation, and according to the mineral paragenesis these mineralisation occured in catathermal – mesothermal phase. Hematite and chalcopyrite veins can be traced accross the tectonic lines inside the license area.
Field Studies : Although the area is steep, the team went to every place as long as they can, and they collected about 200 rock samples and sent to ALS for PGM-ICP-24 and Me-MS41 analysis and also to mineralogy labaratory to define the mineral composition and origin of the mineralisation and alteration. As a result of this field work, field work report is written (in Turkish), geological and mine maps (with the help of analyse results) were created with a scale of 1/5000.
IP & Resistivity and Magnetic: To be able determine sulphide zones 12.6 km Ip & Rezistivity (3 lines & 6 Crosses) and magnetic work (25 m interval, 450 points) were shooted. According to the results of this work high sulfur containing zones were detected, and by correlating these results with magnetic anomaly maps and geology well locations were decided.
Drilling Works : Regarding the results of GnG works approximately 3000 m core drilling realised in14 wells. The well log determinations done and the cores were sent to ALS for analysis for every 2 meter interval. According to the results, some continuous mineralisation zones detected.