Gravel prepacked well screens

Pre-packed screen provide excellence service of sand control in oil, gas and water wells for its unique construction. Pre-packed screen is a modification of pipe-based wire wrapped screen. Its addition of a modular gravel pack makes it especially suitable for sand control where conventional gravel packing fails. Product features: 1. Available in oil and gas well completions, especially in an open or cased hole with unconsolidated formations where stand-alone screen is needed. 2.Pre-packed screen is easy to install for its unique construction. 3.Stainless steel material gives it ability of resisting erosion. 4.Pre-packed screen is equipped with packed layer itself. This unique configuration eliminates gravel placement and significantly shorten the time of drilling a well. 5. Stronger construction like support rods reduces maintenance costs. 6. Pre-packed screen is quite affordable in contrast to slotted liner. A pre-packed well screen consists of one screen telescoped inside another, with an annulus filled with filter pack at the factory before shipment. The pre-packed screen is designed especially for high capicity wells, these screens offer unique advantages over conventional rod based screens with respect to strength. It features include: collapse strength equal to pipe; double the tensile strength of standard rod based screen; a bioresistant, hydraulically superior (to silica sand) pack; a greater percentage of open area(for deep applications) than that of a conventional screen, due to the dual support construction. For the pre-packed screen, base pipe can apply perforated casing with API standard, bridge slot pipe, or continuous slot well screen, while in the middle layer, the filter media could be quartz sand, wier mesh, metal fibre,ceramic beads , etc. The screen jacket could use continuous slot screen, bridge slot pipe. Pre-packed screens are ideal for horizontal boreholes and boreholes that deviate from vertical. the pre-packed sc....

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