The Stanley filter is not a screen. The media used in Stanley filters is a flexible, three dimensional material which allows the fluid to travel into the filter from all directions. This unique design also allows abrasives to penetrate into the filter media and fluids to travel around those abrasives.

The Stanley filter works like the formation of an oil zone. If the zone has porosity and permeability then the oil can be produced effectively. The Stanley filter works the same way. If the particulates that you are filtering out have permeability, then the oil will pass through the same abrasives that are giving you the problem, through the filter and into the pump.

By attaching the Stanley filter to the bottom of the oilwell pump or production string, abrasives are kept away from the valuable equipment that allows producers to bring their oil to the surface.

The benefits of the Stanley filter are longer pump runtimes, fewer pulling unit bills, fewer pump repair bills, increased production and increased profits.