Work was carried out on the gas condensate well m/r Beregovoe
In August 2019, Novatek-PUR JSC carried out work on the gas condensate well m/r Beregovoe. The target object is the terrigenous deposits of the Valanginsky tier. The well has been inactive since 2017 due to the presence of water from the underlying aquifers. The customer carried out repair and insulation work on the elimination of the WCC of water. All previous perforation intervals were eliminated – the well was completely sealed. Specialists of “Perfobur” drilled a channel with a length of 14 m. The well was mastered by compression. A gas flow rate of 50 thousand m3/day was obtained.
For the first time in the world practice, Perfobur managed to control the milling of a section (window) of the casing (OK) of the calculated overall size (OK with a diameter of 139.7 mm made of SM80L material) with a specially designed small-sized screw downhole motor and an experimentally selected milling cutter, it was predicted to carry out the descent and accurate hit into the prepared window with a drill modular layout. after that, drill a channel in the terrigenous reservoir.
The mechanical velocity in the interval of the productive formation reached 7 … 11 m / h;
The radius of curvature of the drilled channels does not exceed-8 m.