Productivity model and analysis of influencing factors on horizontal fracture productivity in ultra-low permeability reservoir.
Ultra-low permeability reservoir is characterized by the complex seepage law, Darcy's law is not applicable to which and it is difficult to predict vertical well horizontal fracture productivity effectively. In this study, according to the law of equivalent percolation resistance, vertical well...
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2025-01-01
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| Series: | PLoS ONE |
| Online Access: | https://doi.org/10.1371/journal.pone.0324463 |
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| author | Xiaofeng Wang Binchi Hou Hailong Dang Houjun Tang Pengxing Cui Tao Gao |
| author_facet | Xiaofeng Wang Binchi Hou Hailong Dang Houjun Tang Pengxing Cui Tao Gao |
| author_sort | Xiaofeng Wang |
| collection | DOAJ |
| description | Ultra-low permeability reservoir is characterized by the complex seepage law, Darcy's law is not applicable to which and it is difficult to predict vertical well horizontal fracture productivity effectively. In this study, according to the law of equivalent percolation resistance, vertical well fracturing horizontal fracture seepage field is divided into two areas by pseudo-well assumptions: the reservoir external seepage resistance generated outside pseudo-well, where seepage flow is radial flow. Reservoir inner seepage resistance generated in pseudo-well, where seepage flow is vertical linear unidirectional flow. Based on principle of hydroelectricity similarity, the inner with the external seepage resistance were combined in series, the vertical well horizontal fracture productivity prediction model was established, and the productivity influence factors were analyzed by simulation. The results demonstrated that horizontal permeability had a great influence on oil production, and vertical permeability had little influence on the production. The bigger starting pressure gradient existed the critical value, the oil wells production showed a marked decline with the value bigger. |
| format | Article |
| id | doaj-art-aba2ad0bb7554f97962837c2b18679d3 |
| institution | Kabale University |
| issn | 1932-6203 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj-art-aba2ad0bb7554f97962837c2b18679d32025-08-20T03:47:05ZengPublic Library of Science (PLoS)PLoS ONE1932-62032025-01-01205e032446310.1371/journal.pone.0324463Productivity model and analysis of influencing factors on horizontal fracture productivity in ultra-low permeability reservoir.Xiaofeng WangBinchi HouHailong DangHoujun TangPengxing CuiTao GaoUltra-low permeability reservoir is characterized by the complex seepage law, Darcy's law is not applicable to which and it is difficult to predict vertical well horizontal fracture productivity effectively. In this study, according to the law of equivalent percolation resistance, vertical well fracturing horizontal fracture seepage field is divided into two areas by pseudo-well assumptions: the reservoir external seepage resistance generated outside pseudo-well, where seepage flow is radial flow. Reservoir inner seepage resistance generated in pseudo-well, where seepage flow is vertical linear unidirectional flow. Based on principle of hydroelectricity similarity, the inner with the external seepage resistance were combined in series, the vertical well horizontal fracture productivity prediction model was established, and the productivity influence factors were analyzed by simulation. The results demonstrated that horizontal permeability had a great influence on oil production, and vertical permeability had little influence on the production. The bigger starting pressure gradient existed the critical value, the oil wells production showed a marked decline with the value bigger.https://doi.org/10.1371/journal.pone.0324463 |
| spellingShingle | Xiaofeng Wang Binchi Hou Hailong Dang Houjun Tang Pengxing Cui Tao Gao Productivity model and analysis of influencing factors on horizontal fracture productivity in ultra-low permeability reservoir. PLoS ONE |
| title | Productivity model and analysis of influencing factors on horizontal fracture productivity in ultra-low permeability reservoir. |
| title_full | Productivity model and analysis of influencing factors on horizontal fracture productivity in ultra-low permeability reservoir. |
| title_fullStr | Productivity model and analysis of influencing factors on horizontal fracture productivity in ultra-low permeability reservoir. |
| title_full_unstemmed | Productivity model and analysis of influencing factors on horizontal fracture productivity in ultra-low permeability reservoir. |
| title_short | Productivity model and analysis of influencing factors on horizontal fracture productivity in ultra-low permeability reservoir. |
| title_sort | productivity model and analysis of influencing factors on horizontal fracture productivity in ultra low permeability reservoir |
| url | https://doi.org/10.1371/journal.pone.0324463 |
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