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1. Select number of perforated laterals 3 <br />2. Select perforation spacing = --::?-_ ft. <br />3. Since perforations should not be placed closer than 1 ft. to <br />the edge of the rock layer (see p. E-14), subtract 2 ft. from the <br />rock layer length. <br />(;.2 - 2 ft. = 0 ft. <br />RM IL lava IenRN <br />4. Determine the number of spaces between perforations. <br />Divide the length above by perforation spacing and round <br />down to nearest whole number. <br />Length perf. spacing = 4'Oft. + I ft. = 20 spaces <br />(3) (2) <br />5. Number of perforations is equal to one plus the number of <br />perforation spaces. <br />20 spaces + 1 - Z I perforations/lateral <br />6. Multiply perforations per lateral by number of laterals to <br />get total number of perforations. <br />3 2/ <br />Wer., x PeArilaenl a -6=- perforation. <br />7. Determine required flow rate by multiplying <br />number of perforations by flow per perforation <br />(see page E -17) <br />3 4 <br />X _ gpm. <br />8. If laterals are connected to header pipe as shown on page E- <br />15, select minimum required lateral diameter from table on <br />page E-17; enter table with perforation spacing and number <br />of perforations per lateral. Select minimum diameter for <br />perforated lateral = X_ inches. <br />1) If perforated latera: system is attached to manifold pipe near <br />the cenwr, a,: on page E-12, perforated lateral length and <br />numl—r of perforations per lateral will t+e approximately one <br />half of that in step R. Using these %-Aues, select minimum <br />diameter for perforated lateral irnm page F.-17 as <br />inches. <br />E- 17a <br />Head Perfmatim dimmer (ir;4" <br />I.Oa <br />0.36 01-S <br />13 <br />0.69 090 <br />2.Ob <br />080 IN <br />2-S <br />389 117 <br />3.0 <br />0.99 129 <br />4.0 <br />1.13 1.47 <br />_U <br />—1" 163 <br />SUM 1.0 trot <br />et head tot readentul eyuems <br />Was 2.0 1 w of head for other establ"mmeb <br />E -17b <br />tt�dle — -er A eq IdA� M I�wl r <br />115inch <br />1.5 inch <br />m:r <br />23 <br />14 <br />to <br />24 <br />3.0 <br />13 <br />17 <br />26 <br />33 <br />12 <br />16 <br />23 <br />4.0 <br />11 <br />Is <br />23 <br />5.0 <br />10 <br />It <br />'- <br />F-15 <br />v <br />E-12 <br />.erv� <br />.00 <br />