Offshore Engineering Success

Customers around the world rely on Timberland Equipment to deliver engineered projects that create opportunities and reduce risk while achieving operational goals.

Go here to view Offshore Energy Products

This included:
• 9 Point Mooring System
• 127 mm : Chain
• Jacks, Underwater Fairleads
• Hydraulic Power Unit

Mooring System for Gulfstar FPS
Gulfstar FPS, is a flexible 21,500-ton oil & gas production solution for deepwater producers in the Gulf of Mexico. Its builder, Williams Partners L.P, came to Timberland for the Gulfstar’s 9-point mooring system
Challenge: The Gulfstar’s SPAR Hull is constructed while on its side and the mooring equipment is all installed with the SPAR in this orientation. The Gulfstar is also towed to site in this position, which subjects the mooring equipment to submersion, heavy spray and rough seas. At site, the SPAR is ballasted into its upright position.
Success: Rapid deployment is the hallmark of the Gulfstar design. From the time the SPAR of Gulfstar 1 was uprighted, to the time when mooring commenced was 24 hours. Timberland’s commissioning team did a great job supporting the efforts to get the equipment operating quickly and mooring was completed within 9 days.

This included:
• 2 x 1000 Te Chain Jacks
(142 mm chain)
• 2 x 440 hp HPU’s
(440 hp CAT diesel engines)

Anchor Test Barge
Project: Manson Construction of Seattle, WA required a field test of horizontally opposed chain jacks rated at 1100 tons pull which would be used to deploy, set and load test permanent seabed mooring anchors. Timberland Equipment developed the control and monitoring system for simultaneous operation, measurement of the length of recovered chain, and certified dual load measurement and drift instrumentation. Timberland personnel were onsite during the entire operation to monitor and assist the installation team and to supervise operation of the jacks.
Challenge: The testing system called for the design of two large horizontal side-by-side modules to be installed on the deck of a small barge to guide and support the chain for correct alignment on jack entry and exit. The apparatus would make provision to pass large connectors through the jack and horizontal guide under load. To complete the tests, the system would generate a sustainable line speed to drag and set the anchors on the sea bed, then generate and hold the test load on both anchor lines over prolonged period. The monitoring system would measure the specific anchor chain drift and test load throughout test.
Success: The measurement of the test load and anchor chain drift was critical to the test. If this was not accomplished satisfactorily, the anchors would have to be recovered and redeployed. All eight anchors were set, tested and certified on the first attempt allowing Manson to complete their contract under the scheduled lead time.

This included:
• 4 x Moveable Chain Jacks
• 12 x 127 mm Chain Stoppers
• 12 x Turn Down Sheaves
• 4 x HPU’s

Mooring System for Gulfstar FPS
Project: With a production capacity of 135,000 bbl/d, the Shell Gumusut FPU is the first deep-water semi-submersible production system operating in Malaysia’s Gumusut-Kakap field.

Timberland Equipment was contracted to supply the complete 127mm mooring system. Components of the system designed and manufactured by Timberland included twelve 127mm deflector wheels; cruciforms and chain stoppers with load monitoring along with four 4400 kN (450 Te) movable chain jacks with hydraulic power units, operator control stations and gantry systems.
Challenge: The design of the FPU imposed very confined space restraints for integrating the mooring system and its control components. The complete package is designed to perform for the 30-year life expectancy of the platform.
Success: Timberland’s state-of-the-art controls and monitoring package provide the customer with system monitoring as well as load monitoring on each mooring leg. The hydraulic system is equipped with a 2 X 50% redundancy on both the main hydraulic pumps as well as the cooling circuit. All the controls are Zone 2 rated to either IEC or ATEX.

Timberland provided the above equipment with a successful FAT. The equipment is running extremely well and meets all customer expectations, achieving an average chain speed of 1.2 meter per minute. Mooring of the Gumusut FPU was completed in just 11 days. The package has been certified by Lloyd’s.

This included:
• 16 x 600 Te Chain Jacks
(120 mm chain)
• 16 x Underwater Fairleads
• 16 x Turn Down Sheaves
• 4 x 750 hp HPU’s
• 4 x Control Cabins

Petrobras P-52 and P-56 Floating Production Units
Project: Petrobras, Brazil’s national oil company, deployed two new semi-submersible offshore production units 125 km off the Atlantic coast of South America. Timberland supplied the platforms’ 16-point mooring systems with 600-ton chain jacks and 120 mm underwater fairleads, as well as a riser pull-in system with 400-ton linear winch, storage winch, 120-ton winches and 70-ton winches. All systems were supplied with Timberland hydraulic power units and controls.

Challenge: The P-52 unit was designed to establish a new record for the Brazilian petroleum industry, moored at a depth of 1800 m. Both units were required to meet the customer’s stringent safety and performance specifications along with DNV certification standards for a flagship project in Brazil.
Success: Both projects were successfully moored in deep water and are producing oil from the large reserves of the Roncador oil field.

This included:
• 2 x 350 Te chain jacks (114 mm chain)
 • 1 x 80 hp HPU

Tower Mooring and Loading System for Bohai Bay

Project: After reconstruction for deployment to the Bohai Bay Phase II Development Project offshore from People’s Republic of China, the Peng Lai FPSO required a new tower mooring and loading system to begin taking on up to 40,000 barrels of oil per day. Timberland Equipment was contracted by Bluewater Energy Services BV to design, manufacture and commission the vessel’s two chain jacks and 114mm mooring installation chains including a hydraulic power unit and control system. The nominal pulling capacity of the chain jack was 350 Te, with a stopper ultimate capacity of chain breaking strength (1050 Te).

Challenge: The greatest obstacle was a design parameter requiring each chain jack to be installed inside a vertical tube that was only 2.0 meters in diameter. All hoses, control cables and main chain also required accessibility inside this tight space. Maintenance accessibility would be nearly impossible after initial installation, so reliability in the field was super-critical.
Success: Consistent and effective coordination between the engineering teams at Timberland and Bluewater ensured that all dimensional, structural and operational parameters were met. After control system adjustments were made during the factory acceptance test (FAT), and pre-installation/commissioning was performed at the construction yard, the performance on site proved to be flawless