For high angle wells, the LiMAR YoYo Sub is a compact, rapid-redressable self-aligning system which can be positioned at various points along the length of a toolstring to greatly reduce frictional drag by effectively lifting the string from off of the tubing wall and onto the robust one-piece elliptical Roller Ball.
The Roller Ball rotates on a unique Toughmet® bushing, proven to offer exceptional wear resistance and lubricity.
Integral upper & lower swivels with in-situ grease nipples help Roller Ball alignment, whilst preventing any lateral friction occurring from rotational torque generated between the YoYo Subs as they are conveyed into and out of a well.
TOOL APPLICATIONS:
- A compact & robust roller option for use in high angle, deviated wells
- The smooth Roller Ball design makes it ideal for use in plastic-coated tubing to reduce tubing wear
- Can be used for tool centralisation purposes
DESIGN FEATURES & BENEFITS:
- Elliptical, Self-Aligning Roller Ball
- Short & Compact
- Maximised Strength
- Toughmet® Bushing feature
- Integral Upper & Lower Swivel
- In-Situ Grease Nipples
- Minimal Components for Rapid Redress
- Interchangeable Roller Ball range across common Mandrel offering for reduction in inventory
- Hexagonal flats for safe make-up & break-out
- Selected components QPQ treated including the Roller Ball
TECHNICAL DATA
Assembly Part Number | Mandrel OD | Roller Ball Range | Fish Neck | Connection |
| 1253-1500-XXX-RX | 1.440" | 1.850" - 2.200" | Optional | Optional |
| 1253-1875-XXX-RX | 1.875" | 2.200" - 2.770" | Optional | Optional |
| 1253-2125-XXX-RX | 2.125" | 2.500" - 3.250" | Optional | Optional |
| 1253-2500-XXX-RX | 2.500" | 3.000" - 4.250" | Optional | Optional |
| 1253-3500-XXX-RX | 3.500" | 4.150" - 5.700" | Optional | Optional |
XXX - Last 3 digits of part number denotes connection type
Roller Ball supplied in effective diameter to suit customer requirements
For additional sizes or further information please contact sales.
