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WPS(Wrapped Punch Slot) Sand Control Screen

WPSTM Screen (Wrapped Punch Slot Screen)

WPS Screen mainly consists of perforated base pipe, stainless steel filtration jacket with the wrapped punch slot jacket and end rings. The base pipe is of API casing or API tubing with many perforated holes. The filtration jacket with the punched slot is made of high-quality stainless steel, and the spatial slot in the high-density array over it is achieved by digital control precise punching machine. In the end, the filtration jacket with punched slots is welded onto the perforated base pipe through support rings on both ends. In application, the formation sand cannot easily enter the filtration jacket while the formation fluid can easily flow into the screen through space between punched slots and establish 3-D stable sand arches to prevent formation sand get into the production line.

WPSTM Screen Features

Slot with precise control. The width of the slot can range from 0.20~1.00mm with its width accuracy as ±0.05mm. So, it can match the formation sand in different particle size, and perfectly meet the requirement of sand control under the well.

With strong anti-corrosion ability. Stainless steel filtration jacket with punched slot has strong resistance to acid, alkali, and salt. It is highly adaptive to H2S, CO2, Clˉ and enables the space between slots not expanded because of corrosion in long-term use.

Perfect integral strength and strong anti-deformation ability. The internal part of the filtration jacket is supported by the base pipe. The integral strength of base pipe with drilled holes is merely 2~3% less than standard casing or tubing. Therefore, it can withstand compression deformation from stratum with sufficient integral strength. Even if local deformation occurs, the gap of the compressed part will not be enlarged. It has been proved to be highly reliable on sand control.

Slot with high density, low flow resistance. Slot density is 3~5 times (6% - 10%) as the traditional slotted screen, with low flow resistance. It is conducive to increase the production of oil or gas.

Good manufacturability makes high efficiency, low cost, and large-scale production achievable.
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