High Pressure, High Temperature Seals for Downhole Applications
Under pressure, laboratory tests have demonstrated that Kalrez® perfluoroelastomer parts can help reduce maintenance, and avoid unplanned downtime.
DuPont™ Kalrez® parts include high pressure, high temperature seals (HTHP seals) that can provide long-lasting performance in a spectrum of oil and gas industry uses.
Kalrez® perfluoroelastomer (FFKM) parts are resistant to 1800 chemicals and solvents, and even resist sour multi-phase fluids. They retain high levels of elasticity and recovery, even after long-term exposure to elevated temperatures.
More durable, more broadly resistant high-pressure seals are designed to last longer, limiting unplanned downtime, and providing the potential to extend planned maintenance intervals.
Kalrez® parts have been field-proven across the oil and gas industry and are found in such applications as:
- Tubing to packer seals.
- Subsurface safety valves.
- Logging boots.
- Casting tie-back seals.
- Survey tool seals.
- Slip-joint seals.
- High pressure, high temperature seals (HPHT).
Rapid Gas Decompression Performance
Kalrez® parts for HPHT downhole environments provide outstanding rapid gas decompression (RGD) resistance.
In rigorous third-party laboratory testing for rapid gas decompression (RGD) resistance, Kalrez® 0090 AS568-312 O-rings, received the best possible rating of 0000 per the NORSOK M-710 Rev 2 standard.
To achieve a “0000” rating, the seal must have no internal cracks, holes or blisters, of any size, after rapid gas decompression testing. Some competitive seals developed multiple internal cracks during test cycling.
V-rings That Endure
When it comes to oil production, Kalrez® V-rings that were recovered after six years of service in a producing well showed almost no signs of wear. The aged V-rings were indistinguishable in physical properties and appearance from un-aged control. Kalrez® V-rings can help provide more uptime and lower maintenance costs.
Durability That Makes Production More Efficient
Kalrez® HPHT seals can help stretch the mean time between repair (MTBR) and lower maintenance costs. Their long-term resistance to the harshest chemicals and the highest temperatures makes them resistant to swelling and embrittlement. Embrittlement is a leading cause of premature seal failure and costly production downtime. Whether it’s O-rings, custom shapes or Kalrez® KVSP™ valve stem packing, Kalrez® seals can help improve productivity, control fugitive emissions and reduce costly seal failures.
INFORMATION & IDEAS
Kalrez® TriLobe™ Seals improve seal life in dovetail grooves. This design combines the excellent chemical, thermal and plasma resistance of Kalrez® perfluoroelastomer parts with a unique cross-sectional shape.
Kalrez® 0090 parts, with its high pressure, high temperature (HPHT) properties, chemical resistance and superior rapid gas decompression (RGD), has reached a milestone in extremely aggressive environments in downhole applications.
Due to the combination of extreme temperature, pressure and chemical environments, Kalrez® 0090 was used in a series of mechanical seals employed in the operation of boiler feed pumps for pressurized water reactors.
Kalrez® 7090 perfluoroelastomer parts offer an excellent combination of chemical, Rapid Gas Decompression (RGD) resistance , and high temperature resistance for O-ring applications in gas sweetening valves that handle glycol-based solvents.