INFORMATION ABOUT THE WELL
CASING POLICY:
Casing Ø508,0 mm - 360 m;
Casing Ø339,7 mm - 2290 m;
Casing Ø244,5 mm - 4795 m;
Liner Ø177,8 mm - 4775-5000 m.
Liner Ø127,0 mm - 4980-5250 m;
DRILLING FLUID TYPE:
Casing Ø508,0 mm – fresh- clay-drilling fluid;
Casing Ø339,7 mm – BRNSTF-polymer drilling mud with low level of solid phase;
Casing Ø244,5 mm – polymer-inhibited drilling mud PIDM-2M;
Liner Ø177,8 мм – invert emulsion drilling mud «Witer II».;
Liner Ø127,0 мм – invert emulsion drilling mud «Witer II»..
Well drilling term – 220 days.
Temperature on depth 5250 m - 138оС.
Drilling fluid density on interval 4795-5250 m - 1180 kg/m3.
This is the first well, pay zone of which will be opened with using of invert-emulsion drilling fluid "Witer-II".