OFFSHORE P&A AND WORKOVER
A field of growing importance, especially in times of low oil prices, is the late-life asset management of mature offshore fields in terms of production enhancement and decommissioning.
Raising production while investment is falling calls for the most efficient well intervention solutions. Well intervention jobs are shorter than drilling jobs and include a wide range of different tasks. While they are currently executed with standard drilling units, by contrast Herrenknecht Vertical designs are highly mobile and reduce flat times between different well intervention operations. The units incorporate a life well intervention possibility through the direct acting hoisting system, which works in a similar way to a snubbing unit.
For decommissioning, Herrenknecht Vertical’s approach, based on its hydraulic rig concept, is to integrate all critical paths in one specialized unit for more focused and cost-efficient operations, eliminating the need for multi-disciplinary operator teams.
The focal point of the hydraulic well intervention and P&A rig concepts is a small footprint and lightweight design. This increases the usable deck area and payload and also make them viable for older platforms.
Generally, Herrenknecht Vertical’s offshore rig packages ensure a high utilization as they meet various requirements including well intervention, P&A and light drilling.