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1. Select number of perforated laterals 3 <br />2. Select perforation spacing = .7 • O feet. <br />3. Since perforations should not be placed closer than 1 ft. to <br />the edge of the rock layer (see diagram), subtract 2 ft. from <br />the rock layer length <br />�— ft. = '?<P feet. <br />Rock <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 = `>P ft. + 3 ft.= /6 spaces <br />(3) (2) <br />5. Number of perforaticns is equal to one plus the number of <br />perforation spaces. <br />/6 spaces + 1 - / 7 perforations/lateral <br />6. Multiply perforations per lateral by number of laterals to <br />get total number of perforations. <br />�a x � ,�= S/ perforations. <br />7. Determine required flow rate by multiplying <br />number of perforations by flow per perforation <br />S/ .7y <br />Path <br />a X �3 <br />� =8 gpm. <br />• 8. If laterals are connected to header pipe as shown on upper <br />example, to select minimum requited lateral diameter, enter <br />table with perforation spacing and number of perforations <br />per lateral. Select minimum diameter for <br />perforated lateral = 2- inches. <br />9. If perforated lateral system is attached to manifold pipe near <br />the center, lower diagram, perforated lateral length and <br />number of perforations per lateral will be approximately one <br />half of that in step 8. Using these values, select minimum <br />diameter for perforated lateral • inches. <br />00 PERFORATION OF A PERFORATED LATERAL <br />bas Cwnr <br />. <br />Lata! SWW LA)W <br />K 6Nletat FMIk for Iii <br />M b► or Wine o.nM <br />Pd rum P18W) <br />Wn <br />orei11Y orald "Whimm rttr <br />�-f <br />lIi PMn Y Lame t2' h r/p <br />01 •/ Itcd Lerlr <br />i�r :.:, /artuNkrr <br />Located at <br />' Cla Saw/ Lars Gonna of Lowed <br />odo" Sall ►r000rtr scermd <br />actor. Plsdq sen/ tar. <br />tt„•a.. r.r�..r.. a.�t�.,s. <br />V �,IYN prr wwne kr•� <br />D= <br />,p <br />11. <br />1 1� <br />uno <br />2.5 <br />14 <br />1.0a <br />0.56 <br />3.0 <br />2.Ob <br />0.80 <br />1.04 <br />a. Use for single family }wags <br />b. Use for all other app"tions <br />Maximum number of quarter inch perforations <br />lateral to guarnantre < 10% discharge variatic <br />perforation <br />Sikec)g <br />11. <br />1 1� <br />2 <br />2.5 <br />14 <br />18 <br />2E <br />3.0 <br />13 <br />17 <br />2E <br />3.3 <br />12 <br />16 <br />.21 <br />4.0 <br />11 <br />15 <br />2" <br />5.0 <br />10 <br />14 <br />2: <br />WIN~ ~110 as t•o v PoRm" trro-o~ <br />