Tensioner system with recoil controls

摘要

A tensioner system for an offshore drilling rig for drilling a well with recoil controls is disclosed herein. The tensioner system can include removable independently operable riser tensioner assemblies. Each removable independently operable riser tensioner assembly can include a bidirectional riser recoil valve and a hydraulic cylinder connected thereto. The hydraulic cylinder can power a rod engaged with a clevis and a blind end clevis. The clevis can engage a tension ring on a drilling riser. A fluid containment storage can be connected to the bidirectional riser recoil valve and the hydraulic cylinder, and can have a goose neck for connecting to a flexible jumper. A controller can be connected to the bidirectional riser recoil valve for regulating flow of hydraulic fluid therethrough to control a disconnect process of the drilling riser by controlled raising or lowering of the drilling riser.