IADC defines PMCD as a variation of MPD that involves “drilling with no returns to surface, where an annulus fluid column, assisted by surface pressure, is maintained above a formation that is capable of accepting fluid and cuttings”.
During PMCD operation, sea-water is normally used as sacrificial mud and no cuttings are recovered to the surface. Drillsoft PMCD can simulate reverse circulation into the annulus while applying surface back pressure to bull head fluids into the formations and to maintain a full wellbore and balanced pressure.
With Drillsoft PMCD you can visualize and monitor the different fluids in the well schematic, keep track of reverse flow volumes and changes in pressure. Drillsoft PMCD simplifies understanding, planning and execution of PMCD procedures and operations.
- Reverse flow into the annulus
- Gas migration/adjustable velocity/ tracking gas migration
- Ability to define total loss zones in formations due to fractures
- Tracking of rate and total volume of LAM to bullhead
- BATCH mode