This Project proposes to obtain and examine high-quality, continuous stratigraphic records of magnetic properties, microfossils, minerals and isotopes from targeted time intervals to better understand (1) how ocean circulation and carbon cycle behaved during warmer climates, and (2) how physical and biological systems responded to elevated and varying levels of atmospheric CO2. It expected to obtain an enhanced reconstruction of the Eocene-Oligocene climatic history and new insights on the mechanisms that drove the global climate during the transition from greenhouse to icehouse conditions at that time. A robust magneto-bio-chemo-stratigraphic reference curve will be established and the major paleoceanographic and paleoclimatic events will be characterized from local to global scale. High-resolution rock magnetic properties, microfossils and minerals associacions, and isotopes records will be obtained from the BEM and compared with several data in different part of the world. The Eocene-Oligocene is a key period in Earth’s climate history and the period that occurred the major climatic changes in the Cenozoic, like the glaciation of Antarctica. This project will apply paleomagnetic, micropaleontological, mineralogical and chemical analyses on carbonate sediments, in order to perform detailed paleocenaographic reconstructions of the evolut ion of the Brazilian Equatorial Margin (BEM) for the Eocene-Oligocene period and compare this results with the modern oceanographic setting. Possible hypothetical formation mechanisms for those Pipes are discussed. Interpretation of the possible texture observed is proposed with a discussion of the noiseĪnd artefact induced by resolution and migration problems. The amplitude anomalies within the pipes conduit and terminus are only partly related to gas. Near-Middle-Far offsets amplitude analysis confirms that most of PSTM workflow) shows a tendency of up-bending of reflection (rather than pulls up artefacts)Īffected by large scale fracture (semblance image) and seem consistent with a suspended mud/sand Zones), using near, medium and far offset stack dataset (processed through an amplitude preserved The internal texture analysis of the large pipes, (across both the root and main conduit Overpressured events and lateral fluid migration (through Darcy flows) across the overburden Terminate abruptly at discrete subsurface horizons or in diffuse termination suggesting multiple That pipes got diameter varying between 100-300 m and a length of 500 m to 2 km. Lista formation and developed across the paleogene and Neogene Units. Preservation workflows) shows a complex system of fluid pipe structure rooted in the pre
#Big pipe timeslice full
The 3Dĭetailed mapping analysis of the full and partial stack survey (processed using amplitude The UKCS) and has been recently re-appraised and re developed by a consortium led by BP. The Loyal field, is located on theĮdge of the Faroe-Shetland Channel slope, about 130 km west of Shetland (Quadrants 204/205 of Stratigraphic succession in the Loyal Field, Scotland (UK). Structure are characterized by big-scale fluid escape pipes affecting the Upper Paleogene/Neogene Seismic survey (released by the BP) recently acquired in the Loyal Field. Of the internal seismic texture of some seal bypass system (e.g fluid escape pipes) from a 4D Here we propose a detailed characterization
Of great significance for the exploration industry.
Therefore, understanding their genesis, internal characteristics and seismic expression, is Identified worldwide (Løset et al., 2009), theyĪcquired more and more importance as they represent critical pathways for supply of methaneĪnd potential structure for leakage into the storage reservoir (Cartwright & Santamarina,Ģ015). Secondary hydrocarbon migration in sedimentary basin. Fluid escape pipes are key features of primary interest for the analysis of vertical fluid flow and
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