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ERE;SLIRE D(Sl"RIBIrrTr)N QVC--- EW PERFMAT►cW of A vERFaaTED LAwtea.. <br /> Gew two <br /> I. Select number of perforated laterals 3 T....It <br /> , '•.• <br /> Lar N OM1wM.FprN(M Itv <br /> 2. Select perforation spacing a 'J feet. uan saa.`"" ,n••M °""C~04,�,..,w peal <br /> /MIM MW n1Nla II./.M." <br /> 168 <br /> 3. Since perforations should not be placed closer than 1 ft. to "We <br /> F ►a'oldL m <br /> 12'to Code <br /> 1110"the edge of the rock layer(see diagram),subtract 2 ft. from . P,,,M,,,,,„t,a;;w `� <br /> the rock layer length. . Ga.Sow tars a.,,•A of t.e,M.l <br /> Rods Iyer lagsh f t• "-- o,+orwl s.n rroo.nr,canna <br /> feet. ..,.,..I.a,,,eM+.L,„, <br /> TABLE OF PERFORATION D[SCHAR(:FS IN CPM <br /> 4. Determine the number of spaces between perforations. Head PerfOratton diameter Yrtrha) <br /> Divide the length above by perfc.:;:zr. :,,r~---yg n and round <br /> down to nearest whole number. <br /> OS6 <br /> Length per: spacing = 3e� ft. + 3 ft. = JJ spaces ub 1.5 OM i.o <br /> (3) (2) 0.89 1.17 <br /> 3.0 0.98 IM <br /> 5. Number of perforations is equal to one plus the number of 4.0 1.13 1.47 <br /> perforation spaces. 5.0 1 1.26 1.63 <br /> I +i:se 1.0 foot of head for resldentlal systeau. <br /> / <br /> spaces + 1 = bUsa 7.0(eet of head for other estaklWhm...,. , <br /> p _ , perforations/lateral <br /> 6. Multiply perforations per lateral by number of laterals to �"" <br /> .10.ti-a-...�... <br /> get total number of perforations. —' 1 inch 1 =–FT 2.0 inch <br /> 2.5 14 18 28 <br /> 13 26 <br /> lateral a X /s—/lu�era! / perforations. 3.3 121625 <br /> I 4.0 11 13 23 <br /> 1.0 10 14 22 <br /> 7. Determine required flow rate by multiplying <br /> number of perforations by flow per perforation <br /> r <br /> pefs X gpm/pal 3" gpm. "r..aa►nta,m .r oa r mrwyrw,*.,w <br /> 8. If laterals are connected to header pipe as shown on upper <br /> example, to select minimum required lateral diameter;enter � ��y " <br /> table with perforation spacing and number of perforations ,, <br /> �,�'' l <br /> per lateral. Select minimum diameter for <br /> perforated lateral = ',�'z.inches. <br /> � <br /> 9. If perforated lateral system is attached to manifold pipe near ; <br /> _ <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 />