Pre-packed screen used as stand-alone screen  

 

Available in oil and gas well completions, especially in an open or cased hole with unconsolidated formations where stand-alone screen is needed. Pre-packed screen is easy to install for its unique construction. Stainless steel material gives it ability of resisting erosion. Pre-packed screen is equipped with packed layer itself. This unique configuration eliminates gravel placement and significantly shorten the time of drilling a well. Stronger construction like support rods reduces maintenance costs. Pre-packed screen is quite affordable in contrast to slotted liner.

Construction:
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. 
The perforated base pipe is covered by inner wire wrapped jacket, whose diameter is smaller than the outer jacket. Between the two layers of jackets, an annular void is packed with silica sand with the appropriate size. The sand is coated by resin or ceramic beads. The gauge of the jacket wire is determined by the packed sand, while the size of the sand is determined by the formulation particle size distribution.

Custom size
A pre-packed screen should satisfy with specific application. Although some data are offered, there are still some should be given by our customers. For example, slot width, formation diameter, open area and other important data which will affect the effectiveness of the screen.

 

Gravel Pack Screen ID (in.) Coupling OD (in.) Size (in.) OD (in.) .006 GA Inlet Area (sq in./ft) 1.61 2.2 3/8 2.72 6.46 1.75 2.5 3/8 2.883 6.84 1.99 2.875 3/8 3.195 7.58 2.44 3.5 3/8 3.695 8.77 2.99 4.25 3/8 4.32 10.26 3.55 4.5 3/8 4.82 11.44 4 5 3/8 5.32 12.63 4.41 5.563 3/8 5.82 13.82 <p style="" font-family:"=""> If you need to consult the price, please contact the business department by e-mail: