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Scientists from the University of East Anglia (UEA) have discovered a unique oil-eating bacteria in the deepest part of the Earth's oceans--the Mariana Trench. Together with researchers from the China and Russia, they undertook the most comprehensive analysis of microbial populations in the trench. The Mariana Trench is located in the western Pacific Ocean and reaches a depth of approximately 11,000 m. By comparison, Mount Everest is 8,848 m high. "We know more about Mars than the deepest part of the ocean," said Xiao-Hua Zhang, a professor at the Ocean University in China who led the study.
The Stones project is located in the Walker Ridge (WR) area approximately 200 miles due South of New Orleans in ~9500 feet of water. The host facility is a Floating Production Storage and Offloading (FPSO) vessel with a disconnectable moored turret buoy (BTM) that allows the FPSO to move off site in a hurricane event. Each of the nine moorings are made up of a suction pile – chain – polyester – chain – spring buoy – top chain assembly. These connect to the circumference of the BTM at the keel. The subsea infrastructure, including 2 flow-lines, one gas export pipeline, and two umbilicals, are supported by the BTM. The pipelines and all umbilical fluids, electrics, and fiber are connected or disconnected from the FPSO via dry internal turret connection systems.
This paper provides an overview of the transportation and installation of the moorings, turret buoy.
Key challenges include water depth world record for FPSO moorings, transportation and handling of the world's largest disconnectable buoy, and project execution during an extreme eddy current event.
Oil-to-telecom conglomerate Reliance Industries Limited (RIL) and BP have started production from India's first ultradeepwater gas project, the first of three such projects in the KG D6 block. The R Cluster gas field is located off the east coast of India, about 60 km from the existing KG D6 control-and-riser platform (CRP), and comprises a subsea production system tied back to the CRP via a subsea pipeline. It is the deepest offshore gas field in Asia at a depth greater than 2000 m. The companies' next project, the Satellites Cluster, is expected to come on stream this year, followed by the MJ project in 2022. These projects will utilize the existing hub infrastructure in the KG D6 block.