FINISH THE WELL. Utilization of OBM Witer-II for the Drilling-in Productive Horizons

GEOSYNTHESIS ENGINEERING

Development and service of drilling fluid

The drilling of directional well with a depth of 5,652 m was carried out using the pitless technology. During drilling-in of the main productive horizon within the interval 5580-5652 m, WITER-II invert-emulsion drilling mud was used. We finished the hole with a slotted liner Ø 127 mm. The effectiveness of such bottomhole design has been repeatedly confirmed. After lowering fluid level the well gave a high gas production rate.

This is the fourth well, where the Witer-II fluid system was used as a fluid for drilling-in and shows good results. The OBM Witer-II volume was provided to the Operator on a rental basis.

 

PARAMETERS OF OBM "WITER-II" BEFOR SLOTTED LINER RUNNING:
  • Density – 1,14 g/сm3;
  • Funnel Viscosity – 79 sec;
  • Gel – 77/86 dPa;
  • PV – 41 cP;
  • YP – 158 dPa;
  • Filter Loss – 2,5 ml/30 min;
  • Electrostability - 742 V.