SOURCE: Trelleborg


April 21, 2015 09:00 ET

Trelleborg Partners With Landing String Solutions LLC in World's First Landing String Buoyancy Design

HOUSTON, TX--(Marketwired - Apr 21, 2015) - Trelleborg's offshore operation has partnered with Landing String Solutions LLC, after being approached to create the world's first composite buoyancy system deployed on a drill pipe landing string.

Patented by Landing String Solutions LLC, the buoyancy system manufactured by Trelleborg features 100% composite materials -- no metallic components -- ensuring that no damage is caused to the well.

This is the first time buoyancy has been used within the drilling riser. The use of buoyancy on the landing string allows the Drilling Contractor to deploy larger amounts of casing, thus reducing rig time, maximizing efficiencies and reducing cost. The new buoyancy system is designed to offset the landing string weight by up to 80% in some cases and will enable safer and more cost-effective deepwater oil and gas operations.

Chris von Eberstein, General Manager at Landing String Solutions LLC, confirms: "A large number of ultra deepwater well designs require 16" and other long casing strings to be run at unprecedented lengths. The deep well design's longer casing requirements can result in extreme loads -- dynamic and static -- approaching, equaling and/or exceeding the design safe working load of even the six plus generation rig's hoisting system. Working at, or near, design working load presents safety and environmental concerns. Should component failure occur in the hoisting system while handling extreme loads, it may result in personal injury and damage to equipment and the environment.

"However, by partnering with Trelleborg we've now produced the world's first buoyancy system which is utilized inside the riser on the landing string, while running casing, reducing its weight and the hook load to a manageable level."

Trelleborg's low density syntactic foam system consists of a combination of hollow glass microspheres and macrospheres to provide uplift. The rugged exterior protective skin provides excellent abrasion and impact resistance to avoid damage during handling and installation. In addition, all buoyancy installation hardware is fully composite. The buoyancy system is qualified for a maximum pressure rating of 6000 psi.

Mark Angus Executive Vice President within Trelleborg's offshore operation, states: "The buoyancy design will enable the use of heavier landing strings and allow rigs to run longer. In addition, 16 inch diameter casing can be utilized in longer lengths than previously possible, allowing Drilling Contractors to use older rigs that do not have the same tensioning capability of the latest 6th and 7th generation drilling rigs. This design could eliminate the requirement for tie-back liners and will expand the operating range of third, fourth and fifth generation drilling rigs to step into field depths where previously only ultra-deepwater rigs could operate."

The system has been successfully field-tested in the Gulf of Mexico and has been proven for a maximum pressure rating qualified to 6000 psi.

For additional information regarding these products, visit

For additional information on Trelleborg Offshore solutions for all offshore and subsea markets, please call Ruth Clay, Direct: +18324568308, Mobile: +1 281 740 5755;

For press information: Sarah Muckle at Stein IAS. Clarence Mill, Clarence Road, Bollington, SK10 5JZ, United Kingdom. Tel: + 44 (0) 1625 578 578; Fax: + 44 (0) 1625 578 579. Email:  

Notes to Editors:

Trelleborg's offshore operation and Trelleborg Group
Using advanced polymer material technology, Trelleborg's offshore operation provides high integrity solutions for the harshest and most demanding offshore environments. As part of the Trelleborg Offshore & Construction Business Area of Trelleborg Group, Trelleborg's offshore operation specializes in the development and production of polymer and syntactic foam based seismic, marine, buoyancy, cable protection and thermal insulation products, as well as rubber-based passive and active fire protection solutions for the offshore industry. Within its portfolio are some long established and respected brands including, CRP, OCP, Viking and Emerson & Cuming. Trelleborg's offshore operation has been providing innovative solutions to the industry for over 30 years.

Trelleborg is a world leader in engineered polymer solutions that seal, damp and protect critical applications in demanding environments. Its innovative engineered solutions accelerate performance for customers in a sustainable way. The Trelleborg Group has annual sales of about SEK 22 billion (EUR 2.48 billion, USD 3.29 billion) in over 40 countries. The Group comprises five business areas: Trelleborg Coated Systems, Trelleborg Industrial Solutions, Trelleborg Offshore & Construction, Trelleborg Sealing Solutions and Trelleborg Wheel Systems. In addition, Trelleborg owns 50 percent of TrelleborgVibracoustic, a global leader within antivibration solutions for light and heavy vehicles, with annual sales of approximately SEK 16 billion (EUR 1.78 billion, USD 2.36 billion) in about 20 countries. The Trelleborg share has been listed on the Stock Exchange since 1964 and is listed on NASDAQ Stockholm, Large Cap.

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