The interval of 2184-4910 m was drilled with the utilization of polymer-inhibited drilling mud PIBR-2M. Pitless technology was employed. After running the following two sections of Ø 245 mm casing, an interval of 4910-5488 m will be drilled using biopolymer clayless drilling mud Biocar MT.
PARAMETERS OF POLYMER-INHIBITED DRILLING MUD PIBR-2M BEFORE CASING RUNNING:
- Density – 1,18 g/сm3;
- Funnel Viscosity – 37 s;
- Gel – 38/55 dPa;
- PV – 20 cP;
- YP – 96 dPa;
- Filtration Loss – 6 сm3/30 min;
- KCl – 6,7%;
- Salinity – 10%;
- рН – 9,3.
