Underbalance Perforating
Underbalance Perforating
Underbalance Perforating
Cased Hole: Casing 16" Weight 97# ID 14.868 Length 4,459 bbls/ft Ft/bbls 0.2147 4.66 0.0000 #DIV/0! 0.0000 #DIV/0! Cased Hole Volume
Annular Volume: Casing 16" Weight 97# ID 14.868 14.750 Tbg OD Length 4.5 6,739 2.875 2,138 bbls/ft 0.1951 0.2033 0.0000 Ft/bbls 5.13 4.92 #DIV/0!
Annular Volume w/ pipe Tubing Volume: Tubing 5 5 1/2 8 9 1/2 Weight 19.5# 80 149 210 ID 4.276 3.250 3.000 3.000 Length 4,459 934 98 98 bbls/Ft 0.01777 0.01026 0.00874 0.00874 Ft/bbls 56.29 97.46 114.38 114.38 Disp bbls/Ft 0.0065 0.0191 0.0534 0.0789
UNDERBALANCE PERFORATING
CALCULATING THE LIGHT WEIGHT COLUMN NEEDED Pressure Information Bottom-hole Pressure (psi) Desired Underbalance Pressure (psi) Fluid Information Current Fluid in the hole (ppg)
Light-weight Fluid for Underbalance (ppg)
* use 0 ppg for air cushion
11.5 0.0
Depths Measured Depth of Top Perf (ft) True Vertical Depth of Top Perf 11,900 11,600
5,587
>>
0.011760
==>>>>
66 bbls