Fasteners and Sealing
From downhole to topside, a reusable, internal thread form is improving oil industry reliability, resisting thread loosening without secondary locking features.
Des puits aux sommets, un filet interne réutilisable améliore la fiabilité de l’industrie pétrolière grâce à un desserrement des filets sans fonctionnalités de verrouillage secondaires.
Von unten bis oben: Ein wiederverwendbares Innengewinde steigert die Zuverlässigkeit in der Ölbranche und hält der Gewindelockerung auch ohne
Sekundärverriegelungen stand.
Shock and heat resistant fastener
D
ownhole or topside, onshore or offshore, oil rigs have some of the most difficult operational requirements in the oil
and gas industry. Drilling deeper, farther, as well as
both hotter and colder in increasingly remote locations has made oil rig reliability and serviceability even more vital. Today, their critical joints must be maintained and production downtime minimised, despite ever more extreme operational shock, vibration and temperature demands. From measurements while drilling
(MWD) chassis, top drives, and set screws to high pressure compressor valves, vertical pumps, and beyond, the tapped holes and fasteners holding vital equipment together must operate with virtual 100% reliability. Otherwise the cost of production downtime and unscheduled service can be astronomically high. Even though engineers traditionally
use adhesives, locknuts, lock wires, or lock washers to prevent loosening,
these may be less effective in oil rig applications or have higher total cost when maintenance and production issues are considered. Applying adhesives, for instance, can be inconsistent, ineffective in high or low temperatures, and essentially single use, requiring cleaning off and reapplication.
Interference threads
Since the last few threads of typical locknuts deform, they cannot safely be reused. With interference threads, they are both difficult to run up the bolt during installation and down the bolt during servicing and maintenance. In high vibration equipment, such as top drives or shakers, typical locknuts may so deform that they are sometimes cut from the bolt with a blowtorch during servicing, requiring both the locknut and bolt to be replaced. As an effective alternative to
traditional fastening methods, a unique internal thread form is helping enhance reliability and productivity by resisting shock, vibration, thread loosening, and extreme temperature even in hard-to-
As an effective alternative to traditional fastening methods, an internal thread form is helping reliability and productivity by resisting shock, vibration and thread loosening.
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