Transient Pressure Behavior of Complex Fracture Networks in Unconventional Reservoirs
Unconventional resources have been successfully exploited with technological advancements in horizontal-drilling and multistage hydraulic-fracturing, especially in North America. Due to preexisting natural fractures and the presence of stress isotropy, several complex fracture networks can be genera...
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2021
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oai:doaj.org-article:dc8ba1ce3e7447c2ba9aa784e2581ee72021-11-15T01:19:19ZTransient Pressure Behavior of Complex Fracture Networks in Unconventional Reservoirs1468-812310.1155/2021/6273822https://doaj.org/article/dc8ba1ce3e7447c2ba9aa784e2581ee72021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/6273822https://doaj.org/toc/1468-8123Unconventional resources have been successfully exploited with technological advancements in horizontal-drilling and multistage hydraulic-fracturing, especially in North America. Due to preexisting natural fractures and the presence of stress isotropy, several complex fracture networks can be generated during fracturing operations in unconventional reservoirs. Using the DVS method, a semianalytical model was created to analyze the transient pressure behavior of a complex fracture network in which hydraulic and natural fractures interconnect with inclined angles. In this model, the complex fracture network can be divided into a proper number of segments. With this approach, we are able to focus on a detailed description of the network properties, such as the complex geometry and varying conductivity of the fracture. The accuracy of the new model was demonstrated by ECLIPSE. Using this method, we defined six flow patterns: linear flow, fracture interference flow, transitional flow, biradial flow, pseudoradial flow, and boundary response flow. A sensitivity analysis was conducted to analyze each of these flow regimes. This work provides a useful tool for reservoir engineers for fracture designing as well as estimating the performance of a complex fracture network.Gou FeifeiLiu ChuanxiRen ZongxiaoQu ZhanWang SukaiQin XuejieFang WenchaoWang PingWang XinzhuHindawi-WileyarticleGeologyQE1-996.5ENGeofluids, Vol 2021 (2021) |
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DOAJ |
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DOAJ |
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EN |
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Geology QE1-996.5 |
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Geology QE1-996.5 Gou Feifei Liu Chuanxi Ren Zongxiao Qu Zhan Wang Sukai Qin Xuejie Fang Wenchao Wang Ping Wang Xinzhu Transient Pressure Behavior of Complex Fracture Networks in Unconventional Reservoirs |
| description |
Unconventional resources have been successfully exploited with technological advancements in horizontal-drilling and multistage hydraulic-fracturing, especially in North America. Due to preexisting natural fractures and the presence of stress isotropy, several complex fracture networks can be generated during fracturing operations in unconventional reservoirs. Using the DVS method, a semianalytical model was created to analyze the transient pressure behavior of a complex fracture network in which hydraulic and natural fractures interconnect with inclined angles. In this model, the complex fracture network can be divided into a proper number of segments. With this approach, we are able to focus on a detailed description of the network properties, such as the complex geometry and varying conductivity of the fracture. The accuracy of the new model was demonstrated by ECLIPSE. Using this method, we defined six flow patterns: linear flow, fracture interference flow, transitional flow, biradial flow, pseudoradial flow, and boundary response flow. A sensitivity analysis was conducted to analyze each of these flow regimes. This work provides a useful tool for reservoir engineers for fracture designing as well as estimating the performance of a complex fracture network. |
| format |
article |
| author |
Gou Feifei Liu Chuanxi Ren Zongxiao Qu Zhan Wang Sukai Qin Xuejie Fang Wenchao Wang Ping Wang Xinzhu |
| author_facet |
Gou Feifei Liu Chuanxi Ren Zongxiao Qu Zhan Wang Sukai Qin Xuejie Fang Wenchao Wang Ping Wang Xinzhu |
| author_sort |
Gou Feifei |
| title |
Transient Pressure Behavior of Complex Fracture Networks in Unconventional Reservoirs |
| title_short |
Transient Pressure Behavior of Complex Fracture Networks in Unconventional Reservoirs |
| title_full |
Transient Pressure Behavior of Complex Fracture Networks in Unconventional Reservoirs |
| title_fullStr |
Transient Pressure Behavior of Complex Fracture Networks in Unconventional Reservoirs |
| title_full_unstemmed |
Transient Pressure Behavior of Complex Fracture Networks in Unconventional Reservoirs |
| title_sort |
transient pressure behavior of complex fracture networks in unconventional reservoirs |
| publisher |
Hindawi-Wiley |
| publishDate |
2021 |
| url |
https://doaj.org/article/dc8ba1ce3e7447c2ba9aa784e2581ee7 |
| work_keys_str_mv |
AT goufeifei transientpressurebehaviorofcomplexfracturenetworksinunconventionalreservoirs AT liuchuanxi transientpressurebehaviorofcomplexfracturenetworksinunconventionalreservoirs AT renzongxiao transientpressurebehaviorofcomplexfracturenetworksinunconventionalreservoirs AT quzhan transientpressurebehaviorofcomplexfracturenetworksinunconventionalreservoirs AT wangsukai transientpressurebehaviorofcomplexfracturenetworksinunconventionalreservoirs AT qinxuejie transientpressurebehaviorofcomplexfracturenetworksinunconventionalreservoirs AT fangwenchao transientpressurebehaviorofcomplexfracturenetworksinunconventionalreservoirs AT wangping transientpressurebehaviorofcomplexfracturenetworksinunconventionalreservoirs AT wangxinzhu transientpressurebehaviorofcomplexfracturenetworksinunconventionalreservoirs |
| _version_ |
1718429014151921664 |