• Riser Joints

    Integrated Solutions from the Drill Floor to the BOP Stack


    NOV offers a complete range of Shaffer marine riser systems from shallow water to ultra deep drilling applications, including riser analysis. The riser system facilitates the return of drilling mud to the diverter, connects the choke and kill conduits from the surface to the subsea BOP stack, and directs hydraulic control fluid to and from the control pods. By analyzing all design variables and drilling condition parameters, we ensure that our riser system components are highly reliable, durable, and cost effective.

    The NOV Riser is 21 inch OD and is commonly manufactured in 90ft. 75ft, and 50ft lengths. Various shorter lengths are offered, and are often referred to as pup joints. Pup joints are necessary for correct space out of the riser in various water depths. Riser wall thickness options are 5/8, 11/16, 3/4, 13/16, 7/8 and 15/16. Larger OD and thicker walls may be available to suit specific customer requirements.