| 摘要 |
A device for tensioning and relieving production tubing (49) extending from a subsea hydrocarbon well (107) up through a riser (63) to a floating installation (87), a continuous production tubing extension (85) passing through a telescopic unit (67) in the upper part of the riser (63), preferab ly extending above a production deck (89) on the floating installation (87), where the production tubing (49) is provided with a tubing tensioner unit (1 ) below and in the proximity of the lower end of the telescopic unit (67).</SD OAB>
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