Archway packers offer the ultimate flexibility in that single packers can be simply coupled together to make a double packer, or a string of any number of packers in series.
When a borehole zone is to be isolated, the units are joined in tandem with perforated pipe between the upper and lower packer units. The plug at the bottom end of the upper packer unit is removed and an airline is attached between the two units. During inflation both packer units expand at the same time.
The packers are supplied in five different standard diameters, covering borehole diameters 42 up to 350 mm. For further information on sizes and method of operation refer to single packers.
We recommend that you choose the largest available packer that fits into the borehole after allowing for sufficient clearance for positioning and extraction. By leaving a sensible margin - so that a packer is not regularlty inflated to maximum diameter - the life of the rubber sleeve is much prolonged. It is also possible to inflate to much higher pressures when working well below the maximum expansion limit, without jeopardising the life of the sleeve (see graph of Pressure Curves).
Packer Spares & Accessories
We supply spare sleeves, O-rings, and a range of valves and fittings to suit our packers. Inflation line is available in coils of 30 metres or 100 metres.
See also:
Single Packers Units
Mechanical Borehole Packers
