STAVANGER, Norway -- Statoil will give tenderers to mature their concepts for a new category B semisubmersible vessel for subsea well intervention offshore Norway.
“The decision…is motivated by input from the bidders,” said Statoil’s chief procurement officer, Jon Arnt Jacobsen. “We see that an integration of additional services, combined with more time for an in-depth FEED phase, can improve the robustness of the concept.
“In reality, this is to be regarded as an extension of the bidding process where we, according to plan, will be able to award the final contract within 2011. Expected delivery from the yard should take place in 2014.”
The rig must be designed for year-round well intervention operations, providing a full range of heavy well intervention and light drilling techniques – including through-tubing rotary drilling (TTRD), wireline, coil tubing, high pressure pumping, and cementing. Statoil is seeking a minimum of one rig of this type for work on the Norwegian continental shelf.
“Traditional drilling rigs are not efficient enough for well intervention purposes, so Statoil has developed a new rig type for well intervention in collaboration with industry partners,” Jacobsen explained. “This rig type will close the gap between light intervention vessels and conventional drilling units. The Category B rig with its integrated service lines is expected to reduce well intervention operations costs by up to 40%.”
Statoil says the key to maintaining the current production level on the NCS through 2020 is increased recovery from existing fields and fast and effective development of new fields.
“Improved subsea well intervention methods are making vital contributions to increased recovery," said Knut Gjertsen, responsible for Operations North field development.
Statoil extends intervention vessel design competition