完整的论文描述了在已经执行无立管油井干预 (RLWI) 的单体船上使用立管进行连续油管 (CT) 操作。该项目由运营商、一家干预船公司和几家服务提供商共同开发。该解决方案覆盖 200 至 500 米水深，并在 CT 操作后转换回无立管操作。
该运营商在全球多个国家拥有600多口海底井，在挪威大陆架（NCS）拥有550多口海底井，占该地区所有海底井的83%以上。使用 RLWI 船只进行的成功干预鼓励操作员研究从船只上执行 CT 操作的可能性。我们发现最好的选择是一种策略，其中包括一艘可以执行 RLWI 和 CT 操作的单体船。
对 NCS 恶劣天气条件下作业的分析表明，此类船舶的基于立管的 CT 作业只能在夏季进行。
The complete paper describes the use of a riser for coiled tubing (CT) operations from a monohull vessel already performing riserless well interventions (RLWI). The project was developed by the operator, an intervention-vessel company, and several service providers. The solution covers 200- to 500-m water depths and converts back to riserless operation after CT operations.
The operator has more than 600 subsea wells globally in multiple countries and more than 550 subsea wells on the Norwegian Continental Shelf (NCS), which accounts for more than 83% of all subsea wells in the area. Successful interventions here using RLWI vessels encouraged the operator to investigate the possibilities of also performing CT operations from a vessel. The best option was found to be a strategy that included a monohull vessel that could perform both RLWI and CT operations.
The analysis of operations in rough-weather conditions in the NCS showed that riser-based CT operations from such a vessel could be performed in the summer season only.
