The inclined interval which include nonproductive carbon layers was cased. The interval was drilled with using Polymer Inhibited Mud System PIDM-2M.
The next step is penetration of pay zone. It will be run through the use of clayless drilling mud system Biocar®.
PARAMETERS OF DRILLING MUD BEFORE LINER RUNNING:
- Density – 1,20-1,24 g/сm3;
- Funnel Viscosity – 75-90 s;
- Gel – 70/80-80/90 dPa;
- PV – 29-34 mPa*s;
- YP – 90-140 dPа;
- Filtration loss – 5,0-5,5 сm3/30 min.;
- Mud Cake Friction Coefficient – 0,1-0,14;
- КСl – 5,0-6,0%;
- Salinity – 10-11%;
- рН – 9,5-10,0.
