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Texas Drilling Associates

Total Nozzle Flow Area Calculator

ONLINE CALCULATOR

is now in "Beta" testing.  Click here, but please use carefully and fully report any problems.

Alternately, you may use nozzle tables below.

 

              Number of Nozzles        
    1 2 3 4 5 6 7 8 9 10 11 12
  7 0.0376 0.0752 0.1127 0.1503 0.1879 0.2255 0.2631 0.3007 0.3382 0.3758 0.4134 0.4510
  8 0.0491 0.0982 0.1473 0.1963 0.2454 0.2945 0.3436 0.3927 0.4418 0.4909 0.5400 0.5890
  9 0.0621 0.1243 0.1864 0.2485 0.3106 0.3728 0.4349 0.4970 0.5591 0.6213 0.6834 0.7455
  10 0.0767 0.1534 0.2301 0.3068 0.3835 0.4602 0.5369 0.6136 0.6903 0.7670 0.8437 0.9204
Nozzle
 size,
in 32nds
of an
inch
diameter
11 0.0928 0.1856 0.2784 0.3712 0.4640 0.5568 0.6496 0.7424 0.8353 0.9281 1.0209 1.1137
12 0.1104 0.2209 0.3313 0.4418 0.5522 0.6627 0.7731 0.8836 0.9940 1.1045 1.2149 1.3254
13 0.1296 0.2592 0.3889 0.5185 0.6481 0.7777 0.9073 1.0370 1.1666 1.2962 1.4258 1.5555
14 0.1503 0.3007 0.4510 0.6013 0.7517 0.9020 1.0523 1.2026 1.3530 1.5033 1.6536 1.8040
15 0.1726 0.3451 0.5177 0.6903 0.8629 1.0354 1.2080 1.3806 1.5532 1.7257 1.8983 2.0709
16 0.1963 0.3927 0.5890 0.7854 0.9817 1.1781 1.3744 1.5708 1.7671 1.9635 2.1598 2.3562
18 0.2485 0.4970 0.7455 0.9940 1.2425 1.4910 1.7395 1.9880 2.2365 2.4850 2.7336 2.9821
  20 0.3068 0.6136 0.9204 1.2272 1.5340 1.8408 2.1476 2.4544 2.7612 3.0680 3.3748 3.6816
  22 0.3712 0.7424 1.1137 1.4849 1.8561 2.2273 2.5986 2.9698 3.3410 3.7122 4.0835 4.4547
  24 0.4418 0.8836 1.3254 1.7671 2.2089 2.6507 3.0925 3.5343 3.9761 4.4179 4.8597 5.3014
  26 0.5185 1.0370 1.5555 2.0739 2.5924 3.1109 3.6294 4.1479 4.6664 5.1849 5.7033 6.2218
  28 0.6013 1.2026 1.8040 2.4053 3.0066 3.6079 4.2092 4.8106 5.4119 6.0132 6.6145 7.2158
  30 0.6903 1.3806 2.0709 2.7612 3.4515 4.1417 4.8320 5.5223 6.2126 6.9029 7.5932 8.2835
  32 0.7854 1.5708 2.3562 3.1416 3.9270 4.7124 5.4978 6.2832 7.0686 7.8540 8.6394 9.4248

Enter nozzle jet diameters in 32nds of an inch, then press the 'calculate' button to calculate the total nozzle flow area (in square inches).  Please email us at drillingtools@tdaweb.com if you experience problems.  Thanks.

Note:  You may now enter the values in either 32nds of an inch or in thousandths of an inch (like Enderle Fuel injectors).  The answer will be calculated both ways.  Be sure you are using the correct 'answer'!  The top answer will be correct for oilfield bit nozzles entered in 32nds of an inch, the bottom one for Enderle nozzle sizes (i.e. 0.067" diameter would be entered as 67, 0.528" diameter would be entered as 528, etc.)

Description Jet sizes:
32nds of an inch diameter
 or 
thousandths of an inch
(Enderle sizes)
Nozzle 1
Nozzle 2
Nozzle 3
Nozzle 4
Nozzle 5
Nozzle 6
Nozzle 7
Nozzle 8
   
TNFA, sq. in. Calculated

(32nds)


(Enderle)

Enter only numeric values (no commas), using decimal points where needed.
Non-numeric values will cause errors.