Semi-Analytical Reservoir Modeling of Non-Linear Gas Diffusion with Gas Desorption Applied to the Horn River Basin Shale Gas Play, British Columbia (Canada)
Adsorbed gas may account for a significant part of the gas resources in shale gas and coalbed methane plays. Understanding gas sorption behaviors and integrating gas desorption into analytical reservoir modeling and an associated transient performance analysis are important for evaluating a system’s...
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| Format: | Article |
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MDPI AG
2024-01-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/17/3/676 |
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| author | Wanju Yuan Zhuoheng Chen Gang Zhao Chang Su Bing Kong |
| author_facet | Wanju Yuan Zhuoheng Chen Gang Zhao Chang Su Bing Kong |
| author_sort | Wanju Yuan |
| collection | DOAJ |
| description | Adsorbed gas may account for a significant part of the gas resources in shale gas and coalbed methane plays. Understanding gas sorption behaviors and integrating gas desorption into analytical reservoir modeling and an associated transient performance analysis are important for evaluating a system’s gas desorption ability and further analyzing its CO<sub>2</sub> injectability, utilization, and storage capacity. However, gas desorption, along with other pressure-dominated gas properties, increases a system’s non-linearity in theoretical studies. Few studies on analytical modeling have integrated the gas desorption feature into a non-linear system and validated the model’s accuracy. In this study, the desorbed gas due to pressure decay was treated as an additional source/sink term in the source-and-sink function methods. This method was combined with the integral image method in a semi-analytical manner to determine the amount of gas desorption. Fundamental reservoir and gas properties from the Horn River Basin shale gas play were chosen to evaluate the methodology and the performance of the associated production well. The results were compared with the commercial fine-gridding numerical simulation software, and good matches were achieved. The results showed that the desorbed gas released from rock will supply free-gas flow when the pressure significantly decreases due to gas production. The production wellbore pressure can be maintained at a higher level, and the production rate was higher than in cases where gas desorption was not considered, depending on the operating conditions. |
| first_indexed | 2024-03-08T03:58:12Z |
| format | Article |
| id | doaj.art-f7603079de4c491e8e632f2409dfc9be |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-08T03:58:12Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-f7603079de4c491e8e632f2409dfc9be2024-02-09T15:11:34ZengMDPI AGEnergies1996-10732024-01-0117367610.3390/en17030676Semi-Analytical Reservoir Modeling of Non-Linear Gas Diffusion with Gas Desorption Applied to the Horn River Basin Shale Gas Play, British Columbia (Canada)Wanju Yuan0Zhuoheng Chen1Gang Zhao2Chang Su3Bing Kong4Geological Survey of Canada, Calgary Division, 3303 33rd Street, NW, Calgary, AB T2L 2A7, CanadaGeological Survey of Canada, Calgary Division, 3303 33rd Street, NW, Calgary, AB T2L 2A7, CanadaFaculty of Engineering and Applied Science, University of Regina, 3737 Wascana Pkwy, Regina, SK S4S 0A2, CanadaChina National Offshore Ocean Corporation Limited-Shanghai, Shanghai 200000, ChinaGeological Survey of Canada, Calgary Division, 3303 33rd Street, NW, Calgary, AB T2L 2A7, CanadaAdsorbed gas may account for a significant part of the gas resources in shale gas and coalbed methane plays. Understanding gas sorption behaviors and integrating gas desorption into analytical reservoir modeling and an associated transient performance analysis are important for evaluating a system’s gas desorption ability and further analyzing its CO<sub>2</sub> injectability, utilization, and storage capacity. However, gas desorption, along with other pressure-dominated gas properties, increases a system’s non-linearity in theoretical studies. Few studies on analytical modeling have integrated the gas desorption feature into a non-linear system and validated the model’s accuracy. In this study, the desorbed gas due to pressure decay was treated as an additional source/sink term in the source-and-sink function methods. This method was combined with the integral image method in a semi-analytical manner to determine the amount of gas desorption. Fundamental reservoir and gas properties from the Horn River Basin shale gas play were chosen to evaluate the methodology and the performance of the associated production well. The results were compared with the commercial fine-gridding numerical simulation software, and good matches were achieved. The results showed that the desorbed gas released from rock will supply free-gas flow when the pressure significantly decreases due to gas production. The production wellbore pressure can be maintained at a higher level, and the production rate was higher than in cases where gas desorption was not considered, depending on the operating conditions.https://www.mdpi.com/1996-1073/17/3/676semi-analytical methodologyshale gas desorptionnon-linear gas diffusionreservoir modelingpressure and rate transient analysis |
| spellingShingle | Wanju Yuan Zhuoheng Chen Gang Zhao Chang Su Bing Kong Semi-Analytical Reservoir Modeling of Non-Linear Gas Diffusion with Gas Desorption Applied to the Horn River Basin Shale Gas Play, British Columbia (Canada) Energies semi-analytical methodology shale gas desorption non-linear gas diffusion reservoir modeling pressure and rate transient analysis |
| title | Semi-Analytical Reservoir Modeling of Non-Linear Gas Diffusion with Gas Desorption Applied to the Horn River Basin Shale Gas Play, British Columbia (Canada) |
| title_full | Semi-Analytical Reservoir Modeling of Non-Linear Gas Diffusion with Gas Desorption Applied to the Horn River Basin Shale Gas Play, British Columbia (Canada) |
| title_fullStr | Semi-Analytical Reservoir Modeling of Non-Linear Gas Diffusion with Gas Desorption Applied to the Horn River Basin Shale Gas Play, British Columbia (Canada) |
| title_full_unstemmed | Semi-Analytical Reservoir Modeling of Non-Linear Gas Diffusion with Gas Desorption Applied to the Horn River Basin Shale Gas Play, British Columbia (Canada) |
| title_short | Semi-Analytical Reservoir Modeling of Non-Linear Gas Diffusion with Gas Desorption Applied to the Horn River Basin Shale Gas Play, British Columbia (Canada) |
| title_sort | semi analytical reservoir modeling of non linear gas diffusion with gas desorption applied to the horn river basin shale gas play british columbia canada |
| topic | semi-analytical methodology shale gas desorption non-linear gas diffusion reservoir modeling pressure and rate transient analysis |
| url | https://www.mdpi.com/1996-1073/17/3/676 |
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