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Pressure Gradient for Drilling

on . Posted in Drilling Engineering

Pressure gradient, abbreviated as \(p_g\), is the rate of change of pressure with respect to distance.  It is typically used to describe pressure variations within a fluid that is not in hydrostatic equilibrium.

Pressure Gradient Index

 

Pressure Gradient (Mud Weight \(\;lbm/gal\)) formula

\( PG = MW \; 0.052  \)     (Pressure Gradient)

\( MW = PG \;/\; 0.052  \)
Symbol English Metric
\( PG \) = Pressure Gradient \(psi\;/\;ft\) -
\( MW \) = Mud Weight (ppg) \(lbm\;/\;gal\) -

   

Pressure Gradient (Mud Weight \(\;lbf/ft^3\)) formula

\( PG = MW \; 0.006944  \)     (Pressure Gradient)

\( MW = PG \;/\; 0.006944  \) 
Symbol English Metric
\( PG \) = Pressure Gradient \(psi\;/\;ft\) -
\( MW \) = Mud Weight \(lbf\;/\;ft^3\) -

   

Pressure Gradient (Mud Weight \(dimensionless\)) formula

\( PG = MW \; 0.433  \)     (Pressure Gradient)

\( MW = PG \;/\; 0.433  \)
Symbol English Metric
\( PG \) = Pressure Gradient \(psi\;/\;ft\) -
\( MW \) = Mud Weight, Specific Gravity \(dimensionless\) -

 

Convert Pressure Gradient (Mud Weight \(\;lbm/gal\)) formula

\( MW = PG \;/\; 0.052  \)     (Mud Weight)

\( PG = MW \; 0.052  \)
Symbol English Metric
\( MW \) = Mud Weight (ppg) \(lbm\;/\;gal\) -
\( PG \) = Pressure Gradient \(psi\;/\;ft\) -

   

Convert Pressure Gradient (Mud Weight \(\;lbf/ft^3\)) formula

\( MW = PG \;/\; 0.006944  \)     (Mud Weight)

\( PG = MW \; 0.006944  \)
Symbol English Metric
\( MW \) = Mud Weight \(lbf\;/\;ft^3\) -
\( PG \) = Pressure Gradient \(psi\;/\;ft\) -

     

Convert Pressure Gradient (Mud Weight \(dimensionless\)) formula

\( MW = PG \;/\; 0.433  \)     (Mud Weight)

\( PG = MW \; 0.433  \)
Symbol English Metric
\( MW \) = Mud Weight, Specific Gravity \(dimensionless\) -
\( PG \) = Pressure Gradient \(psi\;/\;ft\) -

 

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Tags: Drilling Drilling Mud

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