Productivity Influence Factors of Tight Sandstone Gas Reservoir with Water Produced
Finding ways to accelerate the effective development of tight sandstone gas reservoirs holds great strategic importance in regard to the improvement of consumption pattern of world energy. The pores and throats of the tight sandstone gas reservoir are small with abundant interstitial materials. More...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2021/9926299 |
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| _version_ | 1849473218549645312 |
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| author | Yongchao Xue Qingshuang Jin Hua Tian |
| author_facet | Yongchao Xue Qingshuang Jin Hua Tian |
| author_sort | Yongchao Xue |
| collection | DOAJ |
| description | Finding ways to accelerate the effective development of tight sandstone gas reservoirs holds great strategic importance in regard to the improvement of consumption pattern of world energy. The pores and throats of the tight sandstone gas reservoir are small with abundant interstitial materials. Moreover, the mechanism of gas flow is highly complex. This paper is based on the research of a typical tight sandstone gas reservoir in Changqing Oilfield. A strong stress sensitivity in tight sandstone gas reservoir is indicated by the results, and it would be strengthened with the water production; at the same time, a rise to start-up pressure gradient would be given by the water producing process. With the increase in driving pressure gradient, the relative permeability of water also increases gradually, while that of gas decreases instead. Following these results, a model of gas-water two-phase flow has been built, keeping stress sensitivity, start-up pressure gradient, and the change of relative permeability in consideration. It is illustrated by the results of calculations that there is a reduction in the duration of plateau production period and the gas recovery factor during this period if the stress sensitivity and start-up pressure gradient are considered. In contrast to the start-up pressure gradient, stress sensitivity holds a greater influence on gas well productivity. |
| format | Article |
| id | doaj-art-d3b9626f3e4c41e3a445eea43fe94e4a |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-d3b9626f3e4c41e3a445eea43fe94e4a2025-08-20T03:24:12ZengWileyGeofluids1468-81151468-81232021-01-01202110.1155/2021/99262999926299Productivity Influence Factors of Tight Sandstone Gas Reservoir with Water ProducedYongchao Xue0Qingshuang Jin1Hua Tian2State Key Laboratory of Petroleum Resources and Prospecting in China University of Petroleum, Beijing, ChinaState Key Laboratory of Petroleum Resources and Prospecting in China University of Petroleum, Beijing, ChinaState Key Laboratory of Petroleum Resources and Prospecting in China University of Petroleum, Beijing, ChinaFinding ways to accelerate the effective development of tight sandstone gas reservoirs holds great strategic importance in regard to the improvement of consumption pattern of world energy. The pores and throats of the tight sandstone gas reservoir are small with abundant interstitial materials. Moreover, the mechanism of gas flow is highly complex. This paper is based on the research of a typical tight sandstone gas reservoir in Changqing Oilfield. A strong stress sensitivity in tight sandstone gas reservoir is indicated by the results, and it would be strengthened with the water production; at the same time, a rise to start-up pressure gradient would be given by the water producing process. With the increase in driving pressure gradient, the relative permeability of water also increases gradually, while that of gas decreases instead. Following these results, a model of gas-water two-phase flow has been built, keeping stress sensitivity, start-up pressure gradient, and the change of relative permeability in consideration. It is illustrated by the results of calculations that there is a reduction in the duration of plateau production period and the gas recovery factor during this period if the stress sensitivity and start-up pressure gradient are considered. In contrast to the start-up pressure gradient, stress sensitivity holds a greater influence on gas well productivity.http://dx.doi.org/10.1155/2021/9926299 |
| spellingShingle | Yongchao Xue Qingshuang Jin Hua Tian Productivity Influence Factors of Tight Sandstone Gas Reservoir with Water Produced Geofluids |
| title | Productivity Influence Factors of Tight Sandstone Gas Reservoir with Water Produced |
| title_full | Productivity Influence Factors of Tight Sandstone Gas Reservoir with Water Produced |
| title_fullStr | Productivity Influence Factors of Tight Sandstone Gas Reservoir with Water Produced |
| title_full_unstemmed | Productivity Influence Factors of Tight Sandstone Gas Reservoir with Water Produced |
| title_short | Productivity Influence Factors of Tight Sandstone Gas Reservoir with Water Produced |
| title_sort | productivity influence factors of tight sandstone gas reservoir with water produced |
| url | http://dx.doi.org/10.1155/2021/9926299 |
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