OPEN HOLE CAPACITY (m3/100m)

= Hole Diameter (mm)

 12732

 

ANNULAR VOLUME (m3/100m)

= Hole Diameter (mm)2 - Pipe Diameter (mm)2

   12732

 

RECTANGULAR TANK VOLUME (m3)

= Length (m) X Width (m) X Height (m)

 

CYLINDRICAL TANK VOLUME (m3)

= Tank Diameter (m)2 X Height (m)

    1.2733

 

HYDROSTATIC PRESSURE (kPa)

= Mud Density (kg/m3) X Depth (m) X 0.00981

 

FORMATION PRESSURE (kPa)

= SIDPP (kPa) + Hydrostatic Pressure (kPa)

 

BARITE (kg) REQUIRED TO RAISE DENSITY 1 TO DENSITY 2

= 4200 X (D2 – D1) X Mud Volume (m3)

    4200 – D2

 

VOLUME (m3) OF WATER REQUIRED TO REDUCE DENSITY 1 TO DENSITY 2

= (D1 – D2) X Mud Volume (m3)

    D2 – 1000

 

VOLUME (m3) INCREASE DUE TO WEIGHTING MATERIAL

= Amount of Weighting Material Added (kg)

   Weighting Material Density (kg/m3)

 

TOTAL CIRCULATING TIME (min)

= Total Circulating Volume (m3)    

    Pump Output (m3/min)

 

BOTTOMS UP TIME (min)

= Total Annular Volume (m3)

    Pump Output (m3/min)

 


 

ANNULAR VELOCITY (m/min)

= Pump Output (m3/min) X 1273 x 103

    Hole Diameter (mm)2 – Pipe Diameter (mm)2