Drained rock volume around hydraulic fractures in porous media: planar fractures versus fractal networks
Abstract This study applies the Lindenmayer system based on fractal theory to generate synthetic fracture networks in hydraulically fractured wells. The applied flow model is based on complex analysis methods, which can quantify the flow near the fractures, and being gridless, is computationally fas...
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KeAi Communications Co., Ltd.
2019
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oai:doaj.org-article:e33503df223f42f48220f12f21c5e9422021-12-02T13:01:15ZDrained rock volume around hydraulic fractures in porous media: planar fractures versus fractal networks10.1007/s12182-019-0333-71672-51071995-8226https://doaj.org/article/e33503df223f42f48220f12f21c5e9422019-06-01T00:00:00Zhttp://link.springer.com/article/10.1007/s12182-019-0333-7https://doaj.org/toc/1672-5107https://doaj.org/toc/1995-8226Abstract This study applies the Lindenmayer system based on fractal theory to generate synthetic fracture networks in hydraulically fractured wells. The applied flow model is based on complex analysis methods, which can quantify the flow near the fractures, and being gridless, is computationally faster than traditional discrete volume simulations. The representation of hydraulic fractures as fractals is a more realistic representation than planar bi-wing fractures used in most reservoir models. Fluid withdrawal from the reservoir with evenly spaced hydraulic fractures may leave dead zones between planar fractures. Complex fractal networks will drain the reservoir matrix more effectively, due to the mitigation of stagnation flow zones. The flow velocities, pressure response, and drained rock volume (DRV) are visualized for a variety of fractal fracture networks in a single-fracture treatment stage. The major advancement of this study is the improved representation of hydraulic fractures as complex fractals rather than restricting to planar fracture geometries. Our models indicate that when the complexity of hydraulic fracture networks increases, this will suppress the occurrence of dead flow zones. In order to increase the DRV and improve ultimate recovery, our flow models suggest that fracture treatment programs must find ways to create more complex fracture networks.Kiran NandlalRuud WeijermarsKeAi Communications Co., Ltd.articleHydraulic fracturesDrained rock volumeDead zonesFractalsBranched fracturesScienceQPetrologyQE420-499ENPetroleum Science, Vol 16, Iss 5, Pp 1064-1085 (2019) |
| institution |
DOAJ |
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DOAJ |
| language |
EN |
| topic |
Hydraulic fractures Drained rock volume Dead zones Fractals Branched fractures Science Q Petrology QE420-499 |
| spellingShingle |
Hydraulic fractures Drained rock volume Dead zones Fractals Branched fractures Science Q Petrology QE420-499 Kiran Nandlal Ruud Weijermars Drained rock volume around hydraulic fractures in porous media: planar fractures versus fractal networks |
| description |
Abstract This study applies the Lindenmayer system based on fractal theory to generate synthetic fracture networks in hydraulically fractured wells. The applied flow model is based on complex analysis methods, which can quantify the flow near the fractures, and being gridless, is computationally faster than traditional discrete volume simulations. The representation of hydraulic fractures as fractals is a more realistic representation than planar bi-wing fractures used in most reservoir models. Fluid withdrawal from the reservoir with evenly spaced hydraulic fractures may leave dead zones between planar fractures. Complex fractal networks will drain the reservoir matrix more effectively, due to the mitigation of stagnation flow zones. The flow velocities, pressure response, and drained rock volume (DRV) are visualized for a variety of fractal fracture networks in a single-fracture treatment stage. The major advancement of this study is the improved representation of hydraulic fractures as complex fractals rather than restricting to planar fracture geometries. Our models indicate that when the complexity of hydraulic fracture networks increases, this will suppress the occurrence of dead flow zones. In order to increase the DRV and improve ultimate recovery, our flow models suggest that fracture treatment programs must find ways to create more complex fracture networks. |
| format |
article |
| author |
Kiran Nandlal Ruud Weijermars |
| author_facet |
Kiran Nandlal Ruud Weijermars |
| author_sort |
Kiran Nandlal |
| title |
Drained rock volume around hydraulic fractures in porous media: planar fractures versus fractal networks |
| title_short |
Drained rock volume around hydraulic fractures in porous media: planar fractures versus fractal networks |
| title_full |
Drained rock volume around hydraulic fractures in porous media: planar fractures versus fractal networks |
| title_fullStr |
Drained rock volume around hydraulic fractures in porous media: planar fractures versus fractal networks |
| title_full_unstemmed |
Drained rock volume around hydraulic fractures in porous media: planar fractures versus fractal networks |
| title_sort |
drained rock volume around hydraulic fractures in porous media: planar fractures versus fractal networks |
| publisher |
KeAi Communications Co., Ltd. |
| publishDate |
2019 |
| url |
https://doaj.org/article/e33503df223f42f48220f12f21c5e942 |
| work_keys_str_mv |
AT kirannandlal drainedrockvolumearoundhydraulicfracturesinporousmediaplanarfracturesversusfractalnetworks AT ruudweijermars drainedrockvolumearoundhydraulicfracturesinporousmediaplanarfracturesversusfractalnetworks |
| _version_ |
1718393537455718400 |