By OGJ editors
HOUSTON, Feb. 3 -- Statoil ASA has let a pipeline contract and signed a letter of intent for supply of subsea systems for its development of Tyrihans oil and gas field in the Norwegian Sea (OGJ Online, Dec. 5, 2005).
It let a 550 million kroner ($82.5 million) contract to Stolt Offshore SA for two 45 km pipelines between Tyrihans and the Kristin platform, which will handle processing.
One pipeline will carry the well stream, and the other will carry gas from the Aasgard B platform near Kristin for injection for pressure maintenance.
Both pipelines are to be laid within 5 months, starting in May 2007.
The pipeline for the well stream will consist of an outer carbon pipe and an inner stainless steel pipe. The pipeline for gas injection will be carbon steel. The laying operation will entail pipe welding and parallel installation of cables for direct electric heating and mechanical protection.
Tyrihans, with reserves of 182 million bbl of oil condensate and 34.8 billion cu m of rich gas, is scheduled to come on stream in July 2009.
The notice of intent for subsea systems is with FMC Kongsberg. Worth about 1.5 billion kroner, the agreement covers assistance and maintenance of the facility during installation and operation.
It calls for FMC Kongsberg to deliver 13 subsea trees and five template structures with manifolds. It includes production control systems and umbilicals and workover systems for well interventions.
The development involves four subsea structures for production and gas injection and a template for injection of seawater.
Field participants include Statoil, 46.8%; Total SA, 26.51%; Norsk Hydro AS, 12%; Eni SPA, 7.9%; and ExxonMobil Corp., 6.75%.