VAM® TOP HC (High Compression) is a T&C connection based on the main features of the VAM TOP® connection. This connection has been designed for various High Compression applications where it may be necessary to apply extreme compressive loads to the string (Elevated temperature inducing compression, compaction, subsidence …)

• A patented metal-to-metal seal system offers from 5" to 7 3/4" excellent gas tight sealing even under the most severe combined loads
• Sealing integrity remains constant despite repeated make-ups and break-outs.
• Seal geometry protects against galling.

• A reverse angle torque shoulder provides a positive torque stop which allows for accurate power tight make-up and minimizes hoop stresses in the connection.
• The wedge effect caused by the reverse angle gives the connection superior structural strength.
• The shoulder design was optimized in order to resist adverse conditions such as combined compression and external pressure or combined bending, compression and torque.
• The torque shoulder dimension on VAM TOP HC is significantly larger than VAM TOP and with a mixture of reduced torque this enables the connection to withstand extreme compressive loads that are achievable for the pipe body (See the corresponding gas tight VME Performance Envelope)

• A modified hook thread profile, with 3° reverse angle on the load flank not only provides the connection with superior tension strength but also increases its resistance to compression.
• The excellent structural strength including the increased bending and compression resistance, makes this connection especially suited for highly deviated and long horizontal wells.
• Optimized thread geometry minimizes the risk of galling even when thread lubricants are poorly applied.

• Coverage of the vanishing threads, long internal shoulder, and coupling critical cross sections greater than those of the pipe body, contribute to a high performance, 100% efficient connection.

• A pin ID chamfer, tight tolerances on the coupling center and a long shoulder combine to minimize turbulence and energy loss inside the connection for high velocity gas flows encountered.