Vector | SPO Compact Flange - RISER APPLICATIONS
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The most appropriate connector for riser applications

What makes the Vector SPO compact flanges the perfect choiceThe Vector SPO compact flange is a 100% static connection thanks to its metal-to-metal sealing system and bevelled flange face. It has better fatigue properties than the actual weld to the piping. Vector SPO compact flanges are designed to be stronger than the pipe they are connected to and are a significantly smaller and lighter alternative to the ASME flanges. The most appropriate connector type for risers. The Vector SPO CF is the only flange meeting the strict design requirements in DNV-OS-F201 (Dynamic Risers) and ISO 13628-7. A reliability evaluation report from DNV (DNV report 12FQG2F-6) concludes that the Vector SPO CF is considered to be in the magnitude as a welded connection with respect to leakage probability.

SPO compact flanges on Snorre A TLPVector SPO CF was the preferred connector for production and export risers for the Snorre A TLP. Riser installation started in 1991 and totally 1100 Vector SPO flanges have been installed on the risers on this platform. Sizes: 9 5/8” and 10 3/4”. Each riser consist of 23 sections and HX sealrings were used.


Statoil Volve field

Statoil and main contractor Aker Solutions selected Vector SPO CF for the risers on the Volve field. Each riser comprises 8 sections – all joined using Vector SPO Compact Flanges with IX sealrings.


Typical procedure for installation of risers with Vector SPO CF :


Vector SPO Compact flanges for flexible flowlines risers
The first use of Vector SPO Compact flanges on flexible flowlines and risers dates from the early 90’s, where they have been installed on Saga’s Snorre A and Hydro’s Troll B project. Since then, compact flanges have been frequently used both on flexible risers and flexible flowlines. Vector SPO CF is the end connection preferred by the world leaders within the field of flexible pipe and risers.

Vector SPO Compact flanges used for titanium stress joints (RTI)
RTI Energy Systems, Inc is the world leader in design and supply of state of the art deep water and ultra-deep water riser titanium stress joints. There has been a close cooperation between RTI and ourselves since the mid 90’s confirming Vector SPO CF as the most reliable flange on the market today. State of the art flanges used in combination with state of the art riser technology.



Vector SPO compact flange in riser applications - a few references

Client / Project Year installed Remark
Saga Petroleum – Snorre A   1991  1100 flanges, 9 5/8”, 10 3/4”, HX-sealring, Water depth 309m
Conoco Norway – Heidrun drilling riser   1994  24” drilling riser in Ti5 material
Statoil – Heidrun Plateau  1999/2000 6”, 10” and 16” risers, 280 bars, F65
Statoil – Aker Solutions - Volve 2007 - 2009 Various sizes, F65 with Inconel 625 overlay.
Talisman Energy – Claymore WI 2008 12” Swivel flanges, Cl 1500.
Dong – Aker Solutions – Trym 2010 Danish sector – tie-back to Harald
Petrobras – Technip USA – Cascade - Chinook 2010 The worlds first hybrid riser, design pressure – 10K.
Numerous projects where SPO has been used for flexible riser projects 1991-2010 Partners: NKT, Technip (Coflexip), Wellstream
A number of projects where SPO has been used for titanium stress joints 1995-2010 Partner: RTI Energy Systems Inc