FloaTEC LLC (FloaTEC), a US-based joint venture between a subsidiary of McDermott International, Inc. and Keppel FELS Limited, announced Thursday that the P-61 Tension Leg Wellhead Platform (TLWP) has been successfully installed in the Papa Terra Field, Campos Basin, offshore Brazil, at a water depth of 3,871 feet (1,180 meters). FloaTEC, a specialist technology firm for deepwater floating production systems, will also operate the facility for 3 years before handing over to the operator, the Papa-Terra Joint Venture, comprising Petrobras and Chevron.
The completion of P-61 leveraged the combined strengths and expertise of FloaTEC and its parent companies McDermott and Keppel FELS. The design, fabrication and completion of the TLWP was coordinated and executed by FloaTEC. The topsides were engineered in Houston by McDermott and constructed in Singapore by Keppel FELS. Tendons and piles were constructed at the McDermott’s fabrication facilities, while the hull was designed by FloaTEC in Houston and fabricated in Brazil by Keppel FELS Brasil at its BrasFELS yard. The topsides and hull were then integrated at BrasFELS using the float over method.
McDermott mobilized the Derrick Barge 50 from the Gulf of Mexico to the Papa Terra Field at the end of 2013 for the installation of the 8 piles and tendons. After driving the piles to the designated depth, the installation team executed the critical task of assembling the 128 tendon sections in to 8 full-length tendons and connecting them to the piles. The P-61 TLWP was then floated over the 8 tendons, and the tendons guided into receptacles and engaged at the corresponding TLWP tendon porches. A carefully executed de-ballasting process ensured that each tendon would be tensioned to the in-place conditions. The project was carried out with significant technical contribution by Chevron to the TLWP design, construction and installation.
TK Das, President of FloaTEC, said, “We are proud to have successfully engineered our first TLWP, which has been constructed, installed and will soon be operational. This demonstrates FloaTEC’s technical strength, the expertise of our people and the benefits of our patented technology. Leveraging the support and capabilities of our parents, Keppel FELS and McDermott, we are committed to providing high quality and value-added solutions to our esteemed clients.”
Wong Kok Seng, chairman of FloaTEC as well as managing director (Offshore), Keppel Offshore & Marine (Keppel O&M) and managing director, Keppel FELS said, “We are pleased that the timely completion and quality construction of the topsides of the P-61 by Keppel FELS contributed to the success of this project. Together with the excellent work done by our BrasFELS yard in Angra Dos Reis, Brazil, the P-61 is a perfect example of the collective capabilities and strong execution which Keppel O&M can offer to the industry. This successful delivery has proven to the industry that the FloaTEC joint venture remains a strong, capable and proven experienced solution provider to the deepwater market.”
“The patented Extended Tension Leg Platform technology from FloaTEC, construction capabilities of Keppel FELS, and offshore transportation and installation experience of McDermott combined to form a first-of-a-kind solution for this challenging deepwater environment,” said David Dickson, president and CEO at McDermott. “The alignment of all 3 teams with our customers’ requirements ensured successful and safe delivery of one of the most challenging Tension Leg Platforms ever installed.”
About the P61 TLWP
The TLWP will operate in Papa Terra field in Campos Basin, offshore Rio de Janeiro, Brazil. The Papa Terra field is a heavy crude oil field located in block BC-20 of the Campos Basin (see map below). The field lies at a water depth of 3,871 feet (1,180 meters), 68 miles (110 kilometers) offshore Brazil. The Unit has a design life of 25 years without the need for dry-docking.
The TLWP is designed to operate coupled with a Tender Assist Drilling Rig (TAD) and equipped to receive and support work-over rig operations. It is fully outfitted and equipped for drilling, completion and work-over operations on the wells. Oil will be produced from 15 dry completion wells connected individually to the Unit, with three spares. All wells will be equipped with down-hole pumps and the oil will be exported to a Floating Production Storage and Offloading (FPSO) vessel, located 1,148 feet (350 meters) away, using multi-phase pumps, by means of a Fluid Transfer Line System.
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