Packers Catalog - Weatherford International

Permanent Completions
NEOS Nonelastomeric Optimum Seal-Packing Unit
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Weatherford’s NEOS nonelastomeric optimum seal-packing unit is a
premium seal stack for severe high-pressure and high-temperature
applications. This rugged packing unit can be used on both anchored
and floating seal assemblies with UltraPak permanent and BlackCat
retrievable sealbore packers and on polished bore receptacles (PBRs).
The NEOS packing unit is manufactured from proprietary high-strength
materials that are not affected by most hostile downhole environments.
These materials are also chemically resistant to carbon dioxide (CO ), 2
hydrogen sulfide (H S), and downhole fluids such as acids, ZnBr muds,
2
and amine-based corrosion inhibitors.
The NEOS packing unit has proved its durability in temperatures from 80°
to 400°F (27° to 204°C) and pressures up to 15,000 psi (103,421 bar). It
has passed rigorous ISO 14310 testing, including multiple stab-in tests at
the rated temperature.
Applications
• Oil- or water-based completion fluids
• Floating or anchored completions
• PBRs and expansion joints
• Well testing and stimulation
• Horizontal and deviated completions
• High-pressure and high-temperature applications
• Sealbore packers
Features, Advantages and Benefits
• Robust design enables the versatile NEOS packing unit to seal effectively
in a wide range of temperatures and pressures, eliminating the need to
maintain specialty seal inventories for most downhole conditions and
thereby reducing overall inventory costs.
• The comprehensive chemical resistance of the seals eliminates the risk
of incompatibility with downhole fluids and thus improves the success
rate of completions. It also allows the operator to select different
completion fluids with less concern for the effects of compromised seal
integrity.