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':_ li •�MUM <br />Select number of perforated laterals 3- . <br />Select perforation spacing = 2 feet. <br />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 />So <br />ko<kt,yer�,, Lti=2ft. = r/b' feet.' <br />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 = `l,p ft. + ? ft. = 6• spaces <br />(3) (2) <br />Number of perforations is equal to one plus the number of <br />perforation spaces . <br />I° spaces + I= /7 perforations/lateral <br />Multiply perforations per lateral by number of late>;als to <br />get total number of perforations. <br />-? /7 <br />utaj x pe,iw� = / perforations. <br />Determine required flow rate by multiplying <br />number of perforations by flow per perforation <br />C. �y <br />gpm. <br />If laterals are connected to header pipe as shown on upper <br />example, to select minimum required lateral diameter; enter <br />table with perforation spacing and number of perforations <br />per lateral. Select minimum diameter for <br />perforated lateral = i inches. <br />:f 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 />END PERFORATIOft OF A PERFORATED LATERAL <br />CJ.J <br />�i6 Toowl, p <br />1� •: Lor.. d Go4.111. Fowc (" I- <br />L.aany San" Irr.r.' ,• k�,cy.r .1 Iry er .Iro. ta..r.d <br />1 i P.r laralbn 0,111.1 1W111-1.1, <br />a in 1. CA r:. o. Toa <br />Y/.* Plw ut 12' to El;c <br />ti0101, F1.1d P -k3.,• . ,",:l of P UTtr <br />,. `�••Parforatlor�•Loco r.d of <br />Clan S4„4 Lar. Ooilom of Laftrol <br />Orlghol .So11 PToiler lr Sca'It.0 <br />0.1we PTP <br />Sand Loyw <br />R.y.0 w.1 Pobr.. an fT.cA.,a. <br />N F+%b ti W r en uwu (dy enr <br />o�tira. <br />41e.d <br />y <br />1 r r•+ <br />� � � <br />(k..l <br />ig <br />1; <br />1.0a <br />0.56 <br />0.74 <br />2.Ob <br />0.80 <br />1.04 <br />a. Use for single family hom s <br />b. Usc for all other applications <br />Maximum number of quarter inch perforations pe <br />lateral to guarnantee < 10% discharge variation <br />Perforation <br />Sr <br />ig <br />1; <br />n <br />2 <br />2.5 <br />14 <br />18 <br />28 <br />3.0 <br />13 <br />17 <br />26 <br />3.3. <br />12 <br />16 <br />25 <br />4.0 <br />11 <br />15 <br />23 <br />5.0 <br />1 10 <br />14 <br />22 <br />......OLD LOCATro AT rb V ••L mK 6:T •i�yi rtn S.^Sr <br />R <br />