This formula is used to calculate mud density with including safety margin or trip margin.

The formula is:

8. |
MUD DENSITY WITH TRIP MARGIN INCLUDED (ppg) |
[Safety Margin (psi) ÷TVD (ft) ÷ 0.052] + Mud Density (ppg) or |

Problems based on Safety Margin or Trip Margin:

Q1. What should be the mud density including trip margin of ___ psi if current mud density is ___ ppg and TVD is ___ ft.

Q2. A well is drilled upto TVD of ___ ft with mud density of ___ ppg. Before starting a trip out mud density is increased to ___ ppg. What is the safety margin?