North Sea Drilling Season Extension
Location: North Sea – UK
Objective: Provide a mooring solution to extend the drilling season West of Shelton and unmoor without assistance from an Anchor Handling Tow and Supply (AHTS) vessel.
Solution: Delmar provided the proprietary RAR Plus Releasable Mooring System (RMS) that would allow the customer to rapidly disconnect while under tension and in most weather conditions. Because of this solution, the customer was able to extend their drilling season West of Shelton by almost one month.
Summary: Delmar’s innovative RAR Plus RMS is a proven redundant mooring line release system. It utilizes acoustic technology for the primary release with a mechanical release system for its backup to ensure the drilling unit gets off location in any condition. Because of this redundancy, the customer extended the drilling season West of Shelton by almost one month. Additionally, they were able to unmoor during harsh weather conditions while under tension. Proving this to the UK regulatory body, it allowed the drilling season to be extended so the customer could finish their well in the current drilling season, instead of having to come back next season.
More Detailed Scope of Work:
Delmar was contacted by the customer to inquire about technology that could potentially extend the drilling season West of Shelton in the UK North Sea. Delmar informed the customer about the Reseasable Mooring System (RMS) and how it has been utilized in the past; although never for this standard. After engineering analysis conducted by Delmar and the customer, it was determined the RMS could be a tool that would extend the drilling season.
Delmar provided substantial information to the customer, so they could present their drilling season extension case to the UK regulatory body. After about a month of reviewing, it was determined that the RMS would meet their standards and the customers were able to proceed for 15 extra days West of Shetland.
The RMS was installed and used West of Shetland for the customer who went 12 days into the extended drilling period. Because of the RMS, the customer was able to complete drilling operations in one season and for a bonus, released without the need for an AHTS vessel.