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- W2367392866 abstract "In order to study nitrogen-injection technology by horizontal well in low-permeability shallow-thin heavy oil reservoir,a block as an example is takem,the mechanisms of nitrogen-assisted steam stimulation and optimized the injection-parameters with numerical simulation were studied. The results showed that the mechanisms mainly conclude heat insulation,pressure supplement,cleanup and plugging effect. With the amount of nitrogen injection increases,even though cumulative oil production gradually grows,the relative increased oil,the relative gas to oil exchange ratio and the converted oil-steam ratio decrease gradually,the optimum volume ratio of nitrogen to steam is 60: 1 or so. Nitrogen should be injected from No. 4 cycle and the interval is one period,either early or late is not good,also,using large plug and injecting nitrogen before steam is the best." @default.
- W2367392866 created "2016-06-24" @default.
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- W2367392866 date "2013-01-01" @default.
- W2367392866 modified "2023-09-23" @default.
- W2367392866 title "A Study on Nitrogen-injection Technology by Horizontal Well in Low-permeability Shallow-thin Heavy Oil Reservoir" @default.
- W2367392866 hasPublicationYear "2013" @default.
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