A powered capstan reduces the risk associated
with high tension exerted on the wireline
segment between the logging unit and the rig
floor. It also prevents wireline damage caused
by spooling high-tension wireline over low-tension
wireline (drum crush). |
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Operations
The wireline is threaded through the powered
capstan’s wheels which maintain the tension on
the unit side at a constant selectable amount, while
allowing downhole tensions to vary from 0 to
20,000 lb (9,072 kg).
Highlights
- Compact and easily transportable
- Can be rigged up in horizontal or vertical configurations, as shown in images.
- Two independent tension meters monitor the unit-side tension and well-side tension.
Benefits
- Reduces the risk associated with high tension exerted on the wireline segment between the logging unit and the rig floor
- Prevents wireline damage (drum crush) caused by spooling high-tension wireline over low-tension wireline
- Provides wireline mechanical and electrical stability
- Improves the consistency of the magnetic marks for better depth control
Specifications
| Description |
Specification |
| Cable Speed |
0 - 300 ft/min |
0 - 91 m/min |
| Cable Tension |
0 - 20,000 lb |
0 - 9,072 kg |
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Powered Capstan – vertical rig up
Powered Capstan – horizontal rig up
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