Connection List
The connection list gives you access to the VAM® and NSMAXᵀᴹ product lines. Because not all products can be listed, such as fit-for-purpose or so-called isolated products, please contact Nippon Steel engineer in case the VAM® or NSMAXᵀᴹ connection you are looking for is not listed.
VAM®21 is the latest generation of T&C premium connection introducing an innovative and revolutionary design. Confidence thanks to ISO 13679 CAL-IV compliance within the full pipe body envelope extends the opportunities for your well designs.
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Applicable range
- VAM 21 is currently available from 5" to 13 5/8". Other sizes are available upon request.
- Standard, Alternative and Special Drifts
- Carbon, Martensitic stainless steel (13%Cr & Super 13%Cr),Duplex, Super Duplex and Nickel base Alloys
- Yield strengths from 80 ksi to 125 ksi
- Available with high torque option : VAM 21 HT
- Available with CLEANWELL option
ISO 13679 CAL-IV performances within the full pipe envelope
- 100% efficiency under combined loads : Tension, Compression, Internal and External Pressure
- Extreme compression resistance (100%)
- 20°/100ft to 42°/100ft bending resistance
- Tested up to 240°C (464°F) operating temperature
- Excellent gas tight sealing under combined loads
- Performances validated on the full product line according to ISO13679 CAL-IV requirements
- First connection validated to the new ISO13679:2011 CAL-IV revision, also validated under latest ISO 13679-2019 / API 5C5-2017 revision.
- Innovative VAM effect with the VAM StabilizerTM
Superior torque resistance
- Simplified torque table - Single make-up torques for all grades
- Available with environmentally friendly thread compounds
- Introduction of MTS (Maximum Torque with Sealability)
- Optional design available, VAM 21 HT, for even higher torque capacity
Reduced internal diameter restriction
- Special drifts are available on a standard basis
- Reduction of swaging requirements to the minimum
- No interference with well bore operations
- Reduced drilling wear susceptibility
- Increased serviceability for accessories, repairs
Reliable running ability
- Self aligning stabbing mechanism
- No cross threading thanks to cylindrical crests and roots design
- Improved galling resistance
- Seal protected from rough handling
- Fit for automated rig handling systems
Innovative VAM effect with the VAM StabilizerTM
- A patented innovation that revolutionizes the long time successful VAM Effect
- VAM Stabilizer compliance provides independence between the key functions of sealing and torque shoulder
- VAM Stabilizer stiffness bolsters the sealing mechanism
Multi-grooving benefits
- Stable and consistent torque/turn signature
- Large dope quantity tolerance, avoids dope pressure build-up in case of overdoping
- High visibility of the connection
Seal location
- Protected from rough handling damage
- Better sealing mechanism
- Resistance to seal galling
Thread form
- Based on VAM TOP thread form but further optimized
- Self alignment abilities
- Resistance to cross-threading
- Better resistance to thread galling
Introduced markets
- United Kingdom, Norway, Germany, Indonesia, Malaysia, India, Australia, Brazil, Koweit, Oman, Saudi Arabia…
HPHT wells
- VAM 21 is already a standard for HPHT wells
- Popular size : 9 7/8" 66.9# 125 ksi VAM 21
Qualification tests
- 5 qualification tests performed for Major Oil Companies
Users feed-back
- Marathon Norway HPHT (302,joints of 9 7/8" 66.90# 125ksi VAM 21 ran successfully in May 2011) : "We were very pleased with the results from this casing run and will certainly evaluate to run this set-up again when dealing with complex HPHT wells."
- GDF SUEZ Germany (201 joints of 9 5/8" 47# L80 VAM 21 successfully ran in January 2011) : "The expectations placed on the VAM®21 casing have been met. The gas tightness after full usage of the high torque capacity of the connection was established with a pressure test of approximately 280 bar. We intend to use the VAM 21 casing also for following projects in field Roemerberg-Speyer."
- Statoil Norway (277 joints of 10 3/4" 60.70# SM13CRS-110 & P110 VAM 21 successfully ran in May 2009) : “thanks to all involved in this worldfirst deployment of VAM® 21, which is clearly a candidate for next generation threaded & coupled casing connection for StatoilHydro"
Product line validation
- Product line validated to ISO CAL-IV
- CAL-IV type tests performed on more than 30 sizes across the product line
- Tested to the new ISO 13679-2019 / API 5C5-2017
- Validated to 240°C, in all types of loadings (including External Pressure)
- Lubricants: Validated API Modified, Yellow Dope and CLEANWELL
- Sealability performance validated at high torque values (MTS)
- Full computer simulation (FEA) extrapolation and validation (L80 and Q125 on each size of the product line)
