Pre-packed screen is comprised of six parts (from outer to inner) – outer screen, outer support rod,

pre-packed gravel, inner screen, inner support rods and base pipe.

This is a typical model of dual-screen prepack which features double wire wrapped screens.

Base Pipe				Gravel Pack	Perforations		Screen
OD (in.)	ID (in.)	Weight (lbs.)	Coupling OD (in.)	Thickness (in.)	Size (in.)	Holes/ft.	OD (in.)	Cylinder Area (sq. in./ft)	.006 GA Inlet Area (sq. in./ft)
1.9	1.61	2.75	2.2	0.144	3/8	84	2.72	102.49	6.46
2.063	1.75	3.25	2.5	0.144	3/8	84	2.883	108.63	6.84
2.375	1.99	4.6	2.875	0.144	3/8	96	3.195	120.39	7.58
2.875	2.44	6.4	3.5	0.144	3/8	108	3.695	139.23	8.77
3.5	2.99	9.2	4.25	0.144	3/8	132	4.32	162.78	10.26
4	3.55	9.5	4.5	0.144	3/8	144	4.82	181.62	11.44
4.5	4	11.6	5	0.144	3/8	156	5.32	200.46	12.63
5	4.41	15	5.563	0.144	3/8	168	5.82	219.3	13.82

Pre-packed screens are ideal for horizontal boreholes and boreholes that deviate from vertical.

the pre-packed screen is well suited for situations where placing a conventional gravel pack is

difficult. the screen assembilies save time and reduce logistical planning, because no handling

and no installation of bulk pack material is needed.




If  interested,pls contact:
Cynthia
Skype:aldfilters
Email:sales03@xxldlq.com
QQ:2537575135
Mob:86-15637366455(whatsapp,viber,wechat)
Web:http://www.chinawaterwellscreen.com/