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1. Select number of perforated laterals 3 <br />2. Select perforation spacing = _3 feet <br />3. Since perforations should not be placed closer titan 1 ft. to <br />the edge of the rock layer (see diagram), subtract 2 ft. from <br />the rock layer length. <br />(o a - 2 ft• = 60 feet <br />Rock layer lenslh <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 = Go ft. + 3 ft. = ao spaces <br />(03) 02) <br />5. Number of perforations is equal to one plus the number of <br />perforation spaces . <br />coo spaces + 1 = 2 /_ perforations per lateral <br />6. Multiply perforations per lateral by number of laterals to <br />get total number of perforations. <br />3 Uj/ _ <br />laterals x pefHAtlelal ` =� perforations <br />7. Determine required flow rate by multiplying <br />number of perforations by flow per perforation <br />. Pis x spn/pert <br />�Orau Cover <br />TeseeN <br />• Lorat of Oraledlle ►OWC <br />• lfwar load Lar« ' IMN low N M/ w w.. <br />wla a IaeM p "I <br />-Pvrlw little otww ilea, <br />, <br />,•� ■ji , <br />Aftj 1 R <br />-M L.MI It' le <br />of R«a Love,' <br />-pwfM.IMM Located of <br />Chao load Layer <br />BMW" N Lsoval <br />plslaal tall �ren1/1 lcarllld <br />seNre PIG" so" Grw <br />TABLH OF PERFORATION DISCHARGES IN <br />Head Perforation diameter Onchn) <br />r/N <br />1/a <br />sAa <br />0.56 <br />0.74 <br />1.5 <br />0.69 <br />0.90 <br />2.Ob <br />0.80 <br />1.04 <br />2.5 <br />0.89 <br />1.17 <br />3.0 <br />0.98 <br />1.28 <br />4.0 <br />1.13 <br />1.47 <br />S.0 <br />1 1.26 <br />1 AS <br />•Use 1.0 foot of head for residenlial system.. <br />bUse 2.0 feel of head for other eslablishmenls <br />Table 2 <br />1lissiafrra allowable number of floater lock Wa►ations prr <br />Isterol to ilvarantee -c I % nlackarle veriallun <br />M'� �;R +e•I"a <br />1.25 inch <br />1.5 inch <br />2.0 i <br />2.5 <br />14 <br />18 <br />2 <br />3.0 <br />13 <br />17 <br />2, <br />3.3 <br />12 <br />16 <br />2 <br />4.0 <br />11 <br />15 <br />2 <br />5.0 <br />10 <br />14 <br />2 <br />B. If laterals are connected to header pipe as shown on upper <br />example, select minimum required lateral diameter from <br />table 2, enter table with perforation spacing and number <br />of perforations per lateral. Select minimum diameter for <br />perforated lateral - incites <br />9: If perforated lateral system is Attached to manifold pipe near <br />the center, as in lower example, perforated lateral length and <br />number of perforations per lateral will be approximately one <br />half of that In N 6. Using these values, select minimum JAMM i <br />diameter for perforated lateral from table 2�--- <br />perforated lateral = --1--- incites <br />.. �w <br />