numerical well test
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Lithosphere ◽  
2022 ◽  
Vol 2022 (Special 1) ◽  
Author(s):  
Guodong Jin ◽  
Huilin Xing ◽  
Tianbin Li ◽  
Rongxin Zhang ◽  
Junbiao Liu ◽  
...  

Abstract Fluid flow is strongly affected by fractures in unconventional reservoirs. It is essential to deeply understand the flow characteristics with fractures for improving the production and efficiency of unconventional reservoir exploitation. The purpose of this work is to develop an accurate numerical model to evaluate the transient-pressure response for well intersecting fractures. The meshes generated from Fullbore Formation Micro-Imager (FMI) images ensure an efficient numerical description of the geometries for fractures and interlayers. The numerical simulation is implemented by an inhouse finite element method-based code and benchmarked with drill stem test (DST) data. The results show that three flow regimes appear in the reservoir with fractures within the test period: wellbore afterflow, pseudolinear flow, and radial flow. In contrast, only the wellbore afterflow and radial flow appear for the wells without fractures. The results also reveal that fractures dominate the flow near the wellbore. Verification and application of the model show the practicability of the integrated approach for investigating the transient-pressure behaviors in the unconventional reservoir.


2018 ◽  
Vol 161 ◽  
pp. 611-624 ◽  
Author(s):  
Yi-Zhao Wan ◽  
Yue-Wu Liu ◽  
Fang-Fang Chen ◽  
Neng-You Wu ◽  
Gao-Wei Hu

2015 ◽  
Vol 126 ◽  
pp. 512-516
Author(s):  
Yizhao Wan ◽  
Yuewu Liu ◽  
Weiping Ouyang ◽  
Congcong Niu ◽  
Guofeng Han ◽  
...  

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