JKX Oil & Gas said that it has recompleted well NN-71 in the NovoNikolaevskoye field to the Visean V-15 sandstone reservoir.
After a three stage test, the well has produced at a stabilised rate of 4.3 MMcfd of gas and 342 bpd of condensate through a 93/64" choke with a flowing wellhead pressure of 625 psi.
The results indicate the reservoir has good pressure support, despite the previous production from this reservoirat nearby well NN-9.
In the begining of 2013, the re-interpretation of the re-processed 3D seismic and the new, overlapping West NovoNikolaevskoye 3D seismic data set revealed an amplitude anomaly coinciding with the structural closure of the V-15 NovoNikolaevskoye field.
The anomaly was accessible at the NN-71 location and as a result of the re-interpretation, the first workover operation for the recently returned TW-100 rig was to recomplete the well to the overlying V-15 reservoir and perforate a 15 metre interval.
JKX chief executive Paul Davies said, "The success of this recompletion indicates that the continued efforts by our subsurface teams in Poltava and London to update our data and understanding in these complex structures can yield valuable results."
Well NN-71 was first drilled in 2009 as a Visean V-25 reservoir well and subsequently recompleted to the V-16 as part of the early development of the NovoNikolaevskoye production licence at Poltava, Ukraine.