## Convert Pressure into Equivalent Mud Weight

Learn how to convert pressure into equivalent mud weight in PPG as per following formulas.

## 1. Convert pressure in psi  unit into equivalent mud weight in ppg by using feet as the unit of measurement

Equivalent Mud Weight, ppg = pressure in psi ÷ 0.052 ÷ True Vertical Depth (TVD) in ft
Example:
Pressure = 5,000 psi
True vertical depth = 8,000 ft
Equivalent mud weight, ppg = 5,000 psi ÷ 0.052 ÷ 8,000 ft
Equivalent mud weight, ppg = 12.0 ppg

## 2. Convert pressure in psi  unit into equivalent mud weight in ppg by using meters as the unit of measurement

Equivalent Mud Weight in ppg = Pressure in psi ÷ 0.052 ÷ True Vertical Depth (TVD) in meters ÷  3.281

Example: pressure = 5,000 psi
True Vertical Depth = 2,500 meters
Equivalent mud weight, ppg = 5,000 psi ÷ 0.052 ÷ 2,500 m ÷ 3.281
Equivalent mud weight, ppg = 11.7 ppg

Please find the Excel sheet for converting pressure into equivalent mud weight.

Ref book: Lapeyrouse, N.J., 2002. Formulas and calculations for drilling, production and workover, Boston: Gulf Professional publishing.

Bourgoyne, A.J.T., Chenevert , M.E. & Millheim, K.K., 1986. SPE Textbook Series, Volume 2: Applied Drilling Engineering, Society of Petroleum Engineers.

Mitchell, R.F., Miska, S. & Aadny, B.S., 2011. Fundamentals of drilling engineering, Richardson, TX: Society of Petroleum Engineers.