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- W3081359435 abstract "Abstract In order to find effective replacement technology for ultra-heavy oil reservoirs at the late stage of horizontal well cyclic steam injection, pilot test on infill steam-assisted gravity drainage (SAGD) development has been carried out in Xinjiang Oilfield, China. In this study, a fine reservoir geological model was built by combining numerical reservoir simulation with the pilot test to analyze the development mechanism of infill SAGD, and optimize the location of the infill SAGD well group, the infill timing, and the timing of horizontal well turning into production well, as well as the operational parameters of the infill SAGD during start-up phase and production phase. Also, the adjustment techniques at each stage have been worked out. The research results show that the reasonable development technical parameters of the infill SAGD are: the SAGD steam injection well is 5m above the original horizontal well, and the infilling time is after 7 to 8 cycles of steam injection of the original horizontal well; after infilling, the original horizontal well is converted into production well after 2 cycles of steam injection; the bottom hole dryness of steam is greater than 85%, and the production/injection ratio is 1.22 and 1.23. The new technology is expected to increase the ultimate recovery factor by 30%-35%, and will have great reference significance for the development of similar super heavy oil reservoirs." @default.
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- W3081359435 date "2020-08-30" @default.
- W3081359435 modified "2023-09-23" @default.
- W3081359435 title "Research and Application of Horizontal Well Infill SAGD Development Technology for Super Heavy Oil Reservoirs" @default.
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- W3081359435 doi "https://doi.org/10.2118/200389-ms" @default.
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