GEOSYNTHESIS ENGINEERING

Development and service of drilling fluid

INFORMATION ABOUT THE WELL.

CASING POLICY:
Casing Ø630 mm – 20 m;
Casing Ø473 мм – 300 m;
Casing Ø339,7 mm – 2200 m; 
Casing Ø244,5 mm – 4800 m; 
Casing Ø177,8 mm (1 section) – 3800-5750 m;
Liner Ø127 mm – 5700-6300 m;
Casing Ø177,8 mm (2 section) – 0-3800 m.

DRILLING FLUID TYPE: 
Surface casing Ø473 mm – fresh-clay-drilling fluid; 
1st Intermediate casing Ø339,7 mm – BRNVTF-polymer drilling mud with low level of solid phase/NDDM; 
2st Intermediate casing Ø244,45 mm – PIDM-2М polymer inhibited drilling mud;
Production casing Ø177,8 mm – OBM «Witer-II»; the interval will be cemented with the utilization of inverted oil-emulsion cement slurry IOECS-2;
Liner Ø114,3 мм – OBM «Witer-II».


Well drilling term – 200 days.
Bottomhole temperature (6300 m) – 154 оС.

Drilling fluid density within the intervals of:

  • 0-300 m – 1120 kg/m3;
  • 300-2200 m – 1160 kg/m3;
  • 2200-3800 m – 1250 kg/m3;
  • 3800-4800 m – 1320 kg/m3;
  • 4800-5750 m – 1160 kg/m3;
  • 5750-6300 m – 1250-1370 kg/m3.