Optimization of Hydrocarbon Gas Flooding Parameters in Ultra-Low Permeability Tight Reservoirs
The horizontal well and volume fracturing technology can effectively increase the production of a single well in ultra-low permeability tight reservoirs. However, the production of a single well decreases rapidly by relying solely on natural energy production. Therefore, it is urgent to explore new...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Well Logging Technology
2023-08-01
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| Series: | Cejing jishu |
| Subjects: | |
| Online Access: | https://www.cnpcwlt.com/#/digest?ArticleID=5520 |
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| Summary: | The horizontal well and volume fracturing technology can effectively increase the production of a single well in ultra-low permeability tight reservoirs. However, the production of a single well decreases rapidly by relying solely on natural energy production. Therefore, it is urgent to explore new ways to supplement energy to improve the recovery efficiency of tight reservoirs. In this paper, the ultra-low permeability tight oil reservoir in block X is taken as the research objective, and combined with the actual situation of the field, the mechanism model of one injection and two production was established. The effects of injection timing, injection gas volume, gas injection speed and daily oil production on the oil increase effect were studied. The results show that the injection timing is negatively correlated with the recovery factor, and the earlier the injection timing, the better the recovery factor. Too low injection gas and gas injection speed can not effectively supplement formation energy, but too high injection gas and gas injection speed will lead to high injection pressure, difficult for injection and other problems. Too low daily oil production is not conducive to the economic development of the reservoir, and too high daily oil production will reduce the oil displacement efficiency. An optimal development scheme is obtained by optimizing hydrocarbon gas flooding parameters, which provides theoretical guidance and reference for the efficient development of other similar ultra-low permeability tight reservoirs. |
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| ISSN: | 1004-1338 |