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- W4312312596 abstract "Summary One of the more important challenges of the oil and gas industry in Brazil is to optimize the production from the pre-salt fields to increase recovery. 4D seismic has been demonstrated in the Tupi field using Ocean Bottom Nodes (OBN). This was a challenge because 4D signals are small from the carbonate rocks and monitoring needs to be frequent to disentangle the effects of alternating injection of fluids. A system that uses nodes that are placed on the seabed for five years, ready to acquire 4D seismic on demand (On-Demand OBN) is under development by Shell Brasil and its partners. The new nodes can record seismic data for 500 days and are turned-on and off using acoustic commands by a specialized AUV called FlatFish. Once the survey is completed, the FlatFish hovers above each node to harvest the data using an optical modem. In a further step one may provide images autonomously by processing the data in the OD OBN itself. This is feasible because the data recorded by each node, when suitably processed, provides a piece of the full image, which may be transmitted to surface using acoustic means, where it would be assembled into the full image." @default.
- W4312312596 created "2023-01-04" @default.
- W4312312596 creator A5063354838 @default.
- W4312312596 date "2022-01-01" @default.
- W4312312596 modified "2023-10-16" @default.
- W4312312596 title "Towards Autonomous Seismic Monitoring of Pre-Salt Fields" @default.
- W4312312596 doi "https://doi.org/10.3997/2214-4609.202287022" @default.
- W4312312596 hasPublicationYear "2022" @default.
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