BPZ Energy,an independent oil and gas exploration and production company, announced that the hull tower for the CX-15 platform was successfully floated off the transport vessel, uprighted and ballasted. Subsequently, the topside facility was also successfully mated to the hull tower.
The CX-15 platform is now anchored at the West Corvina field location, one mile south of the existing CX-11 platform.
Welding and other miscellaneous activities are underway and will take approximately two weeks. The Petrex-28 drilling rig, which has been inspected and accepted for work, will then be mobilized to the CX-15 platform. It is expected that the necessary environmental permit required to conduct drilling operations from the CX-15 platform will be received from the Peruvian authorities before the drilling rig is mobilized. The Company expects to spud the first well of the CX-15 drilling campaign in late October.
The CX-15 platform was safely completed and successfully delivered to BPZ Energy at Wison Offshore & Marine’s Nantong, China, fabrication facility in a record 11 months from contract signature and without a single lost time incident. Wison’s scope included the engineering, procurement and construction of the facility’s 2,500 ton Buoyant Tower hull and 1,500 ton topsides facility. This project represents not only the first use of the design, but also the first implementation of Wison’s integrated international delivery model including members from the company’s three operation centers Inc. located in Shanghai and Nantong, China, and Houston, Texas, USA.
The Buoyant Tower hull for the facility was designed and engineered through a joint venture between Wison affiliate, Horton Wison Deepwater, and GMC Limited and consists of four, ring-stiffened connected cylindrical tubes or “cells” with one central suction pile. Each cell measures 8.4 meters in diameter and 60.1 meters long, with a total hull length, including suction pile, of 69.9 meters. This design, which is similar to proven cell spar technology, was a key enabler for the project due to the fact that it will not require a derrick barge for installation as it is located in a region with minimal resident offshore construction vessels.
GMC and Horton Wison Deepwater confirmed their Joint Venture established to design and supply innovative Buoyant Towers for shallow water fields.
Kevin Chell, CEO of the joint venture, stated “The Buoyant Tower concept draws on the proven technology of the cellspar and the design provides multiple benefits for fields where other concepts would be problematic requiring high capital costs and expensive crane barges for installation. The buoyant tower can operate in water depths up to 600 feet and can be relocated allowing small marginal plays to be exploited in a cost effective manner. The design allows for hydrocarbon storage if needed, can eliminate separate shallow water drilling units and provides a high level of flexibility for the operator.”
The benefits of the design were recognized and adopted by BPZ Energy for their new platform at the Corvina field offshore Peru. The tower is composed of four cylindrical cells and is connected to the seabed by a single suction pile which is integral to the hull structure. The tower and decks with the production equipment will be transported from the fabrication yard to Corvina on a submersible heavy lift ship. After upending, fixed and variable ballast will be pumped into the hull to provide stability for the platform.
The CX-15 shallow water tower is well on track for a summer 2012 installation and will be the first application of this design. The platform is designed for 12,200 barrels of oil per day, gas compression capacity of 12.8 million standard cubic feet per day and produced water handling and injection capacity of 3,500 barrels per day. A total of 24 drill slots will be available, some of which will be used for gas and water reinjection wells. The CX-15 platform will be located about one mile from the existing CX-11 Corvina platform, with both platforms interconnected via a series of subsea pipelines.
The JV completed the FEED scope in 2011 which led to detailed design for the buoyant tower. Fabrication is underway at Wison Offshore and Marine’s yard in Nantong, China. GMC are also providing project management and installation services for the CX-15 platform.
Jim Maher, COO of the JV, commented “We are pleased to be working with BPZ Energy on this important project which draws upon deepwater technology and applies it in the shallow water arena.”