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<br /> PRESSURE DISTRIBUTION SYSTEM Geotextile fabric
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<br /> �C��C' J�.7��.y�.,an.;AU;l�'UC!`.ci.�l.4�.r;r;)�ct..o.al.4��:1'rY�:��'.'��;:�rl8int.
<br /> . �7;. .h L�o. �
<br /> 1. Select number of perforated laterals ''�� ' '�.;�
<br /> arter inch erforarions s aced�3 �w +. �
<br /> - � � , � c°ni� t t' -0rti;
<br /> �� ����.z������r,��.a� 4 G� ut r�0� .4 yn {oc� q�.
<br /> ��il'7UR���c�y 7�,x1�1j�l� �-JQL x�}'vb.�����U til}J l.G -�Cn
<br /> 2. Select perforation spacing = � feet. �,«�,�,�` ,� � ,r ob�� u,, re,i „�� ,> �< < ��
<br /> .aaacu.:nti.I.17(}.1(�T 7:a,q: J32�� .7 Gr�a�,�
<br /> Perf Sizing 7/32"-1/4"
<br /> 3. Since perforations should not be placed closer than 1 ft. to Perf Spacing 1.5�-s�
<br /> the edge of the rock layer (see diagram),subtract 2 ft. from
<br /> the rock layer length. Perforatlon Dlscharges in gpm
<br /> , t perforatibn dlameter
<br /> o� ayer eng ��lt. = feet. head inches
<br /> � (feet) 1/8" 3/16 7/32 1/4
<br /> 4. Determine the number of spaces between perforations. t.o� 0.18 0.42 0.56 �0.74,
<br /> Divide the length above by perforation spacing and round b
<br /> down to nearest whole number. 2•0 0.26 0.59 0.s0 1.04
<br /> 5.0 0.41 0.94 1.26 1.65
<br /> Length perf. spacing = ft. 1- ft. = Sp 1CeS a use�.o foot tor s�n9�e-tomuy nomes.
<br /> �3� �2� b Use 2.0 feet for anything else.
<br /> • Potentlal for plugging
<br /> 5. Number of perforations is equal to one plus.the number of
<br /> perforation spaces . _ �
<br /> , , Maximum number of quarter inch perforarions pe
<br /> spaces + 1 = � perforations/lateral lateral to guarnantee<10%discharge variation
<br /> Perforation
<br /> 6. Multiply perforations per lateral by number of laterals to � S�fe�g l� 1� 2
<br /> get total number of perforations. , 2,.5 14 18 28
<br /> � ' perforations. 3.0 13 17 26
<br /> atera X per s ater 3.3 12 16 ��
<br /> Calculate the square footage per perforation (6-10 sqft/per� 4.0 11 1J� 23
<br /> System area: ' x = � 5.� 1� 14 22
<br /> area er ora o
<br /> - sqfdperf
<br /> M4NIfpLD IOCATED AT END Of PRESSURE O�STRIBUTION SYSTEM
<br /> 7. Determine required flow rate by multiplying,
<br /> number of perforations by flow per perforation ���°
<br /> .. nn reow
<br /> T�pi"
<br /> ., '.. . i ,. . .�
<br /> � �� _ ,� � �,�,.
<br /> �.
<br /> '�� X SPm Per - � gp . �,�"'` i�",,�P�.�
<br /> 8. If laterals are connected to header pipe as shown on upper ��``�TM d
<br /> example, to select minimum required lateral diameter; enter
<br /> table with perforation spacing and number of perforations VVpUT OF/ERfOMiEO►IK LATEN�LS roA
<br /> MESSURE D1lTPIBUTId1 W MOUNO
<br /> per lateral. Select minimum diameter for ,�„�,,,�,,,,,,K,,,�
<br /> perforated lateral= � inches. ' ��"°
<br /> [uo n��T��s.aj� ^�ppra+
<br /> v�tw '"' r
<br /> �r e
<br /> 9. If perforated lateral system is attached to manifold pipe near .��;�-��p•�«
<br /> the center, lower diagram,perforated lateral length and '° � - •-�;�•���,s���;.�„
<br /> number of perforations per lateral will be approxirriately one �,��, �. ��,�
<br /> half of that in step 8. Using these va�ues,select minimum �,,.���"'"°`� �"'���"�
<br /> diameter for perforated lateral= :''' � inches. �
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