The East EWS I-571 well in Siberia encountered the Jurassic P reservoir at 1,868 m (6,129 ft), confirming 17.8 m (58 ft) of net pay, Exillon Energy reported.

Due to the angled trajectory of the well bore, this exposed 30.6 m (100 ft) of effective net oil pay for production. The well was spudded Aug. 15, and drilled and cemented in 18 days on the northern part of the East EWS I field.

The well flowed water-free oil naturally to the surface and had a test flow rate of 882 b/d on an 8 mm choke.

Well 571 is the fifth development well drilled from Pad 5 following the success of Exploration Well 50 in 2011. All five wells have thicker than expected net pays, confirmed a highly permeable reservoir, and none has discovered an oil water contact, proving a wider and thicker area of high quality reservoir across the northern extension of East EWS I, the company reported. The wells are currently flowing naturally, without pumps.

The well was drilled 1.2 km (0.7 miles) east of Pad 5, and is now connected to our existing production facilities.