PolyVolve SWIVEL DS

Ultra-durable drillstring swivel

PolyVolve SWIVEL DS is the world’s strongest and most durable swivel. It’s patented stackable polymer bearing design allows an unlimited number of bearing modules to be added to give unlimited load bearing and durability capabilities.

Inclusion of PolyVolve SWIVEL DS in the drillstring above a liner or casing during deployment allows dynamic rotation to mitigate the negative effects of static friction and can significantly improve deployment capability. This provides operators with the utmost confidence of speedy, accurate and safe placement of their wellbore systems and can allow for longer more complex wells to be planned with confidence and executed safely.

PolyVolve SWIVEL DS is recommended for use in any application where the system deployment may be encumbered or hampered by excessive friction due to well conditions or wellbore geometry. It is ideally suited to assist with the controlled, precise and speedy deployment of liners and sand-face completions, TCPs, casing, perf and wash systems, and wellbore clean-up systems. The compliant nature of the bearing under bending load delivers excellent performance in high dogleg and deviated applications.

  • Reduced static friction
  • Better weight transfer for deployment
  • Enhanced durability over alternative technology
  • Safe, controlled & accurate deployment
  • Reduced operational time
  • Increased operational success
  • Compliant bearing excellent in bending for dogleg applications

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Technical Features

Premium Connection Sub

PolyVolve SWIVEL DS can be dressed with any standard or premium threaded connection, removing the need for cross-overs.

Up-Swivel PolyVolve Module

The Up-Swivel PolyVolve module allows high tension forces to be applied to the device whilst allowing rotation.

PolyVolve is a modular, stackable, polymeric thrust bearing swivel capable of withstanding ultra-high thrust forces whilst rotating for extended periods in extremely hostile conditions.

PolyVolve delivers a proven and unrivalled thrust load bearing capability, is impervious to wellbore fluids and debris and can operate comfortably at high temperatures.

Secondary Lock Module

This is the secondary or contingency system for rotationally locking the mandrel of the swivel in the splined position to allow tool manipulation such as releasing from a liner hanger system.

Drive Spline Module

A precision high-torque drive spline provides the torsional drive force required for manipulation of deployment tools as and when required. The drive spline is disengaged in the swivel modes.

Primary Lock Module

The primary lock module provides a system for rotationally locking the mandrel of the swivel in the splined position to allow tool manipulation such as releasing from a liner hanger system. This is pressure activated. A low pressure threshold temporarily locks the mandrel in the splined position which can then be released with the relief of the pressure. An elevated pressure threshold permanently locks the mandrel in the splined position once the desired shear rating is exceeded. The shear rating is adjustable at the wellsite.

HAMMER Transmission module

This system provides torque transmission through the lower PolyVolve modules to allow coupling of an INFINITY engine to provide HAMMER vibro-impact deployment hammer capability.

Down-Swivel PolyVolve Module

The Down-Swivel PolyVolve module allows high compression forces to be applied to the device whilst allowing rotation.

PolyVolve is a modular, stackable, polymeric thrust bearing swivel capable of withstanding ultra-high thrust forces whilst rotating for extended periods in extremely hostile conditions.

PolyVolve delivers a proven and unrivalled thrust load bearing capability, is impervious to wellbore fluids and debris and can operate comfortably at high temperatures.

Add or subtract PolyVolve bearing modules as desired to achieve the optimal required thrust load rating.

HAMMER Module Option

A HAMMER vibro-impact module may optionally be fitted to the lower end of a PolyVolve SWIVEL DS to provide superior deployment capability by delivering precise, controllable friction-reducing downward acting vibrational and axial impacting forces.

Premium Connection Sub

PolyVolve SWIVEL DS can be dressed with any standard or premium threaded connection, removing the need for cross-overs.