A Practical Methodology for Production Data Analysis in Carbonate Reservoirs Using New Decline Type Curves
Carbonate reservoirs typically have complex pore structures, so the production wells typically have high production in the early production stage, but they decline rapidly. It is highly challenging to achieve accurate interpretation results. In this paper, a new and practical methodology for product...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2020/1873236 |
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| author | Zhihao Jia Linsong Cheng Peng Wang Suran Wang Pin Jia |
| author_facet | Zhihao Jia Linsong Cheng Peng Wang Suran Wang Pin Jia |
| author_sort | Zhihao Jia |
| collection | DOAJ |
| description | Carbonate reservoirs typically have complex pore structures, so the production wells typically have high production in the early production stage, but they decline rapidly. It is highly challenging to achieve accurate interpretation results. In this paper, a new and practical methodology for production data analysis of fractured and fractured-vuggy carbonate reservoirs is proposed. Firstly, analytical solutions to characterize the different multipore media and simulate transient production behavior of fractured and fractured-vuggy carbonate reservoirs during the transient flow regime are presented. Then, a new function fqD and f′qD that related to the dimensionless production rate is introduced, and a series of new decline type curves are drawn to make a clear observation of different flow regimes. In addition, the effects of the storativity ratio, interporosity flow coefficient, skin factor, and dimensionless radial distance of external boundary on production performance are also analyzed. Finally, two example wells from the fractured and fractured-vuggy carbonate reservoirs are used to perform rate decline analysis with both the Blasingame type curves and the new type curves. The validation of the new method is demonstrated in comparison to the results of well test interpretation. The results show that the curves of 1/f′qD vs. tD are ∧-shaped for dual-porosity reservoirs and M-shaped for triple porosity reservoirs and also indicate that the interpreted parameters such as permeability, skin factor, storativity ratio, and interporosity flow coefficient using new decline type curves are aligned well test interpretation. In correlation with other traditional well test analysis, this approach effectively reduces the multisolution probability of interpretation. |
| format | Article |
| id | doaj-art-f3b74ee44db7447babd8a2ce06453d79 |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-f3b74ee44db7447babd8a2ce06453d792025-02-03T06:43:52ZengWileyGeofluids1468-81151468-81232020-01-01202010.1155/2020/18732361873236A Practical Methodology for Production Data Analysis in Carbonate Reservoirs Using New Decline Type CurvesZhihao Jia0Linsong Cheng1Peng Wang2Suran Wang3Pin Jia4College of Petroleum Engineering, China University of Petroleum, Beijing 102249, ChinaCollege of Petroleum Engineering, China University of Petroleum, Beijing 102249, ChinaCollege of Petroleum Engineering, China University of Petroleum, Beijing 102249, ChinaCollege of Petroleum Engineering, China University of Petroleum, Beijing 102249, ChinaCollege of Petroleum Engineering, China University of Petroleum, Beijing 102249, ChinaCarbonate reservoirs typically have complex pore structures, so the production wells typically have high production in the early production stage, but they decline rapidly. It is highly challenging to achieve accurate interpretation results. In this paper, a new and practical methodology for production data analysis of fractured and fractured-vuggy carbonate reservoirs is proposed. Firstly, analytical solutions to characterize the different multipore media and simulate transient production behavior of fractured and fractured-vuggy carbonate reservoirs during the transient flow regime are presented. Then, a new function fqD and f′qD that related to the dimensionless production rate is introduced, and a series of new decline type curves are drawn to make a clear observation of different flow regimes. In addition, the effects of the storativity ratio, interporosity flow coefficient, skin factor, and dimensionless radial distance of external boundary on production performance are also analyzed. Finally, two example wells from the fractured and fractured-vuggy carbonate reservoirs are used to perform rate decline analysis with both the Blasingame type curves and the new type curves. The validation of the new method is demonstrated in comparison to the results of well test interpretation. The results show that the curves of 1/f′qD vs. tD are ∧-shaped for dual-porosity reservoirs and M-shaped for triple porosity reservoirs and also indicate that the interpreted parameters such as permeability, skin factor, storativity ratio, and interporosity flow coefficient using new decline type curves are aligned well test interpretation. In correlation with other traditional well test analysis, this approach effectively reduces the multisolution probability of interpretation.http://dx.doi.org/10.1155/2020/1873236 |
| spellingShingle | Zhihao Jia Linsong Cheng Peng Wang Suran Wang Pin Jia A Practical Methodology for Production Data Analysis in Carbonate Reservoirs Using New Decline Type Curves Geofluids |
| title | A Practical Methodology for Production Data Analysis in Carbonate Reservoirs Using New Decline Type Curves |
| title_full | A Practical Methodology for Production Data Analysis in Carbonate Reservoirs Using New Decline Type Curves |
| title_fullStr | A Practical Methodology for Production Data Analysis in Carbonate Reservoirs Using New Decline Type Curves |
| title_full_unstemmed | A Practical Methodology for Production Data Analysis in Carbonate Reservoirs Using New Decline Type Curves |
| title_short | A Practical Methodology for Production Data Analysis in Carbonate Reservoirs Using New Decline Type Curves |
| title_sort | practical methodology for production data analysis in carbonate reservoirs using new decline type curves |
| url | http://dx.doi.org/10.1155/2020/1873236 |
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