MAINTAINING OFFSHORE SAFETY

The North Sea can be an extreme environment for drilling operations and the client requested that the vessel be available for the entire duration of the summer months to allow them to maximise their drilling programme. With the Stena Don class renewal survey being due in the window Q4 2023 – Q1 2024 with a duration of just over 2 months and the client having work committed up to the end of 2023, this presented a challenge to ensure the class certificates were renewed on time while optimising the availability of the rig for the client.

Stena Drilling engaged with DNV to renew the class certificates and carry out the UWILD (under water inspection in lieu of dry docking) within the survey window with the shortest time out of service and defer the main SPS project to winter of 2024. Working with DNV and the client, a plan was developed to carry out the comprehensive inspections and testing necessary to renew the class and statutory certification in a 14 day period in the shipyard. This period was utilised by both Stena and the client to carry out intrusive maintenance and install new equipment onboard the rig for the drilling campaign ahead.

The project plan was created well in advance as it was critical that Stena Don return to operations for her client by a certain date.  “Everyone has come together and we’re on track for hitting our target date,” says Fraser Scott, Engineering Superintendent.

Included in the project was inspection of the columns cross bracing, overload testing on the cranes to renew the crane class certification, and a full strip down of the top drive for inspection and pressure testing.  A small project team integrated with the crew, yard, the client and their 3rd parties to ensure that all the objectives for the project were met.

Due to the intensive nature of the project, additional safety officers were required to assist with the control of the Permit to Work System.  They identified the conflicts within the areas of operation and interacted with yard workers by having safety conversations and performing audits to monitor and challenge where appropriate in line with our Stena Management System (SMS) requirements.

In conclusion, Stena Drilling adopted an innovative approach to asset management, focusing on safety and efficiency while also collaborating with our client and maximising the opportunity that the short time out of service provided. In doing so, Stena Drilling reinforces its leadership position in the industry while contributing to a culture of continuous improvement and collaboration.

“It’s time to get back to our year-long campaign of drilling with our client and we’re really looking forward to getting back into that,” Nick Benzie, Rig Manager.