Failure to maintain tension on the injector head chains can cause:
Failure to maintain tension on the injector head chains can cause the chain to skip while running in hole (RIH) as well.
Inconsistent or incorrect tensioning of the injector chains may be caused by basic mechanical faults such as:
In both of these causes, the chains will remain slack, but the chain tension hydraulic circuit will still be working as normal, and will provide normal pressures once the tension cylinders are fully extended.
Chain tensioning problems such as low, or erratic tension pressure, may also be caused by a hydraulic system fault such as:
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