Initial Circulating Pressure Calculator

Formula reference

Initial circulating pressure estimates the pump pressure required at the start of a well-control circulation using slow circulating pressure and shut-in drillpipe pressure.

Assumptions

• Slow circulating pressure is measured at the planned kill rate.
• Shut-in drillpipe pressure is reliable and stabilized.
• The method follows conventional well-control pressure scheduling.

Common mistakes

• Using normal circulating pressure instead of slow circulating pressure.
• Using unstable shut-in pressure readings.
• Treating ICP as the final kill pressure.