Magni DRBM (Drill Riser Buoyancy Module)

Magni DRBM (Drill Riser Buoyancy Module)

Magni DRBMs are fitted along the length of the riser to reduce the weight of a drilling riser to a manageable level. Reducing this weight is critical in expanding exploration and resource recovery for ultra deepwater fields.

Depth range

Module densities provide uplift for riser in saltwater depths up to 12,000 ft.

Syntactic foam core

Low density syntactic foam comprised of a combination of hollow composite microspheres and macrospheres to provide uplift.

Molded recesses

Design includes recesses to accommodate fastening hardware and auxiliary lines of drill risers.

Fiberglass exterior skin

Tough exterior skin provides excellent abrasion and impact resistance to avoid damage in handling and installation.

Key Applications

Drill riser


View Magni DRBMs during design, storage, manufacturing, and installations

Technical specifications

As an aid to drilling operations and to ensure installation at the correct depth, each buoyancy module is color coded according to the chart below. Both ends are painted and a matching color identification label is attached to the side of each module.

Depth Range (ft) Color

0 to 2,000


2,001 to 3,000


3,001 to 4,000


4,001 to 5,000


5,001 to 6,000


6,001 to 7,000


7,001 to 8,000


8,001 to 9,000


9,001 to 10,000


10,001 to 11,000

Lt Blue

11,001 to 12,000


product sheet
drill riser buoyancy

Magni DRBM

Learn more about how we solve your challenges

Similar Products

Other Trelleborg Offshore products in Towing Attachments and Ancillaries