Riser bases are subsea support structures used to tie-in a pipeline at one end and provide vertical flange connection to facilities to connect riser jumper at the other. A Riser base typically consists of ROV-Operated isolation WOM Magnum Gate Valves and hubs. Due to the large tension load of the riser jumper, the riser base can be separated as a mud-mat and a piping skid which are terminated at the riser jumper and can be installed to some inclined direction to facilitate the riser’s required entry angle.

Specification and Features

Built to Client Specifications: WOM manufactures a variety of API-certified subsea structures that can be customized to customer requirement

Quality Ensured: WOM’s API-certified subsea structures conforms to API guidelines and are thoroughly inspected by both first and third party inspectors before being delivered to the customer

Industry Certified: WOM’s fully vertically integrated manufacturing process allows for complete supervision in every step of the process to produce API-certified subsea structures


Riser Bases are custom-engineered per the customer’s requirements.

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