“NTC “ZERS” LLC has developed different packer models in which the sealing element is
made of elastomeric material that is able to swell out on contact with certain fluid (water
or oil).
Swellable packers have the following significant advantages:
• secure and irreversible beds isolation at well construction;
• packer design doesn’t include valve systems and moving parts which can cause the
packer failure;
• there is no need in special operations and special running tool for their installation in
the well;
• ability to self-healing and recovery of the sealing properties.
Packers with elastomeric material which swell in hydrocarbon medium are marked as PNN,
and packers with elastomeric material which swell in water medium are marked as PNV.
PNV and PNN packers can be installed with the casing string as well as in the hole open
bore, they can be applied at various stages of well construction including fixing of the lateral holes as the redundant device for increasing of lateral holes fixing quality at the space
between a liner hanger and a port made in a production string.
Packers with sealing elements made of swellable elastomeric materials can also be used
for effective and secure beds isolation at construction of horizontal and multilateral wells,
for improvement of cementing quality, in complexes for controlled zonal isolation with
FSO filters and KRR devices, as well as in many other operations at wells fixing and zonal
isolation.
PNV and PNN swellable packer models are designed for space isolation in an open hole
or in a casing string.