Welcome to the World of Trelleborg 2019-02-28 TRELLEBORG GROUP

Drill Riser Buoyancy Overview Offshore Europe 2019-02-28 TRELLEBORG GROUP

DRBM - Purpose The drill riser provides a conduit for the drill string and drilling fluids from the ocean floor to the rig. This has significant weight which must be supported by its own structure and ultimately by the drilling vessel. In order to reduce this weight in water to a more manageable amount, discrete buoyancy units in the form of Drill Riser Buoyancy Modules (DRBMs) are fitted along the length of the riser. Trelleborg DRBM Technical Presentation

DRBM - Purpose Drill Riser String Being Deployed DRBM Riser Weight Reduction A typical 10,000ft riser string can weigh 3-4 million pounds without buoyancy. The buoyancy is a crucial part of the riser system and provides an important reduction in weight. Reduces Riser String weight to a manageable level. Trelleborg DRBM Technical Presentation

DRBM - Safety Trelleborg Safety System ULTRA MIS Drill Riser Buoyancy is used offshore and operates in a hostile environment. Many operations are performed that can have a detrimental effect on DRBM’s. These operations could result in cracked or broken buoyancy elements which could cause damage to surrounding equipment and more importantly cause a safety risk for personnel. Health and Safety underpins all that we do and to this end, we have developed the “Ultra MIS” range of Drill Riser Buoyancy. Ultra MIS (Module Integrity System) is the inclusion of a special discrete layer under the external skin of the buoyancy providing the ultimate in structural integrity and strength. Trelleborg DRBM Technical Presentation

TOUS Facilities Current State RANKIN ROAD INFORMATION WEST HARDY Employees 200 Status Owned Site Area 7.5 Acre / 323742 ft² / 136,200 ft²covered Products Drill Riser Buoyancy Modules General Buoyancy WEST HARDY INFORMATION Employees 60 Status Leased / July 31, 2015 Site Area 10+ Acre / 120,000 ft² covered Products Drill Riser Buoyancy Module Finishing Service Drill Riser Buoyancy Module Repair 519 INFORMATION Employees 40 Status Leased / June 30, 2014 Site Area 12,000 ft² Office Area Offices Country Management Team Office Area Administration, HR, Sales, Design & Project Management

Striving for More Stackable RiserGuard® - Riser Protection Systems Key items to discuss: We are routinely drilling deeper than 10,000FSW Deck space/load on rig is not increasing. Continuous Improvement approach to new protection technology (current stackable RiserGuard is 4th generation). Stackable RiserGuard® - Riser Protection Systems Pushing the limit without sacrificing Safety, Reliability & Performance TRELLEBORG OFFSHORE

Space, Weight and Time Space -West Hercules rig demonstrates limited space on latest generation rigs. Weight – talk about stacking now -12 high. Mention “neutral buoyancy” of RG elements/shims in H20 and Time – faster to run riser due to protected external lines as well as same geometry as RiserGuard® is designed to maximize riser storage capacity on the rig as well as increase performance when deployed. TRELLEBORG GROUP

Innovations in Drilling Riser Protection Proven low density high strength polymer materials used. Reduced weight while deployed. Complete protection of riser and peripheral lines. Simplified installation/handling of RiserGuard®. Stacking capabilities of stackable RiserGuard® significantly improved. Materials – low density hi strength polyethylene & industry standard polyurethane. Weight – start talking about stacking –as much as 12 high. Mention proximal “neutral buoyancy” of RG elements/shims Time – faster to run riser due to protected external lines as well as same geometry as buoyant joints . Dress/undress is similar to buoyancy. TRELLEBORG GROUP

Stackable RiserGuard®: A Reliable Solution -Offers complete protection of bare riser joint and external lines during handling, storage, and drilling operations. -offers same OD & geometry as buoyancy (allows bare joints to be run at same speed as buoyant joints). -Light Weight Material (neutral in sea water). -Excellent Abrasion and Impact Resistance -Quick and Easy Installation -Stackable -Spare Parts Available -Proven Track Record (available upon request) Let them read, Just talk about Drilling Contractors that use our RiserGuard. Transocean, Maersk Drilling, Seadrill, Sevan, Noble, Saipem etc. Also mention that we protect Pup jts, T-jts etc. TRELLEBORG GROUP

Taking The Pressure Off Trelleborg’s Stackable RiserGuard® - slick joint protection system. Provides a cost effective and complete slick joint protection solution for both on and off the rig. Efficient, economic and safe. Proven for today’s drilling rigs and ready for the next generation. Wrap-up. Talk about 12k depths and deeper, multiple OD scenarios. Be prepared to discuss VIV fairings etc if it comes up. TRELLEBORG GROUP

Trelleborg Offshore Links Download Trelleborg Offshore product handout at the following link: http://www.trelleborg.com/upload/Trelleborg_Offshore/Documents/Bro chures/10-0011%20TOUS%20Drilling_Final_web.pdf Visit Trelleborg Offshore Website for additional product information at the following link: Offshore Oil and Gas - Trelleborg AB [BA/BU/PA]Name