Project Profile
Location: Tomsk Oblast of West Siberia, Russia
Value: Undisclosed
Area: 40 sq.km
Exploration Start-up: 2011
The Cheremshanskoye oil field is located on License 67 in the Tomsk Oblast of West Siberia. The Cheremshanskaya No. 3 (C-3) well drilled by Petroneft in 2011 discovered four separate hydrocarbon intervals and established the Cheremshanskoye oil field. These intervals were the J13, J14, the J1-3 and the J1-1 + Bazhenov. The area of the field is very large encompassing almost 40 square kilometres. Testing of the Lower Jurassic J14 interval which contains 8.6 metres of net pay was completed in December 2011. The well flowed naturally to the surface at a rate of 6 m3/d (38 bfpd), consisting of a light, high quality, low viscosity oil with an API gravity of 50 degrees, gas and water. This is understood to be the first natural flow ever achieved from this Lower Jurassic interval in the Tomsk Oblast.
Testing of the primary Upper Jurassic J1-3 interval was successfully completed in February 2012. The J1-3 interval which was initially interpreted to be water bearing, proved to be oil bearing. based on the cased hole testing the interval is interpreted to contain 6.5 m of net pay (4.7 m of oil saturation and 1.8 m of oil+water saturation). Average inflow was about 44 bfpd consisting of 20.3% oil and 79.7 % formation water. The oil is good quality with a 34 degrees API. The J1-3 interval was then isolated with a cement packer and the J1-1 + Bazhenov interval was tested. This interval consisted of 1.2 m of net pay in the J1-1 plus 3 m of fractured shale at the base of the Bazhenov Formation. Average oil inflow from the J1-1 + Bazhenov was about 12.6 bopd of high quality oil with a 40 degrees API.
In 2014, modern 3D seismic (95.16 sq. km.) was acquired over the Cheremshanskoye oil field in follow-up to the successful C-3 well. Interpretation of the 3D data indicates that there is a large area of the field structurally higher than existing wells that have tested oil.
Operators:
PetroNeft: 50% interest
Arawak Energy Ltd: 50% interest