Prinos North Oil Field is one of the satellite Fields within Prinos – Kavala Basin. It is located approximately 3 km north of Prinos Oil Field and about 18 km south-west of the mainland of Eastern Macedonia, Northern Greece, where the water depth is 38 meters.
Since 2008, Energean has invested more than US$ 30 million in redevεlopping the field, managed to revive oil production which was interrupted back in 2004. In the context of the new investment programme which is in progress, Energean has planned to sidetrack the well PNA-Η3 in 2017-2018 aiming to increase the current production up to 2,000 bopd.
In 2015, the average oil production rate was 198 stb/d at a water cut of some 80 per cent. but Prinos North is currently producing c. 400 bopd as a result of technical interventions.
The cumulative oil production is 4,0 MMstb, while 2P reserves stand at 3,3 mbbls.
History
The Prinos North structure had been initially identified as a potential exploration opportunity in 1976, when the Prinos-4 (P-4) delineation well encountered small quantities of oil to the north of the Prinos oil field.
This led to the acquisition of 3D seismic
data in 1993 and the drilling of Prinos North-2 (PN-2) exploration well
in 1994, which discovered the main field, as well as a second deeper and
thinner sandstone reservoir, called the Delta prospect.
Prinos North was appraised and developed as a
satellite field to Prinos by an extended reach horizontal well, PNA-H1,
in 1996. In 1997, PNA-H1 was brought in production and produced until
2004 at initial rate of 3,000 bbls/d with an interruption during the
period 1998-1999 when a decline set in on water breakthrough.
At the time of field shut-in in late 1998 the
well was producing some 1,500 stb/d at a water cut of some 50 per cent.
On the resumption of production the well continued declining to ca 300
stb/d at a water cut of some 80 per cent when it was closed in for
side-track in 2004.
Following the unsuccessful side-track in
2004, an extended reach well, PNA-H3, was successfully drilled by
Energean in 2009, through a challenging operation due to the geological
complexity of the targeted reservoir.
The well reached a total depth of 4,370 m, with a 358 m horizontal section into the reservoir.
The production started at initial rates of
more than 1500 bopd, but it declined to less than 200 bopd, until its
new increase after the interventions conducted during Q1 2016.
SOURCE:
http://www.energean.com/operations/
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