FLOATING APPLICATION RIGS
Together with customers and industry partners, we have been working to bring the advantages of hydraulic offshore rig packages to floating vessels as well.
For a subsea P&A package, installed on a well intervention package of a well-known vessel manufacturer, the compact topside drilling package combines all the critical paths of decommissioning in one multi-purpose mobile offshore drilling unit (MODU). The Herrenknecht Vertical package allows for a completely free aft deck area usable for storing and recovering subsea equipment. Separating the non-standardized decommissioning works from the automated P&A and well intervention working area enhances overall safety and process efficiency significantly. Hydraulically integrated heave compensation increases system efficiency and reduces total weight, which in return results in a smaller vessel.
Also on geotechnical drilling vessels, the hydraulic rig package plays off its benefits. Integrating seabed winches into the mast system increases the flexibility by running different operations simultaneously. An optimized arrangement of the automated pipe rack reduces the footprint and improves moon pool accessibility while enhancing the overall safety.
For riser-less well intervention such as wireline activities and top hole drilling without return mud circulation, Herrenknecht Vertical has developed a multi-purpose tower together with a well-known crane manufacturer. The concept integrates drilling components with an offshore bridge crane, allowing crane accessibility to the moon pool through its skidding ability. The system has a high operational flexibility and increased utilization, as it can pick up BOP stacks and can also be upgraded for geotechnical drilling activities.