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contributor authorZhao, Jinzhou
contributor authorWang, Zhenhua
contributor authorLin, Ran
contributor authorRen, Lan
contributor authorWu, Jianfa
contributor authorWu, Jianjun
date accessioned2023-11-29T19:05:57Z
date available2023-11-29T19:05:57Z
date copyright1/11/2023 12:00:00 AM
date issued1/11/2023 12:00:00 AM
date issued2023-01-11
identifier issn0195-0738
identifier otherjert_145_5_053202.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4294579
description abstractHydraulic fractures are difficult to initiate simultaneously during multi-cluster fracturing owing to the strong heterogeneity of shale reservoir and the stress interference effect between adjacent hydraulic fractures. Some hydraulic fractures can initiate early and propagate rapidly, whereas others exhibit late initiation (or even fail to initiate) and propagate slowly, resulting in non-uniform propagation behavior of multiple fractures. This non-uniform propagation behavior can significantly limit hydraulic fracturing performance in shale gas reservoirs. Therefore, the minimization of non-uniform propagation of multi-cluster fractures is important in improving the shale gas development. Currently, diverting fracturing technology is implemented to restrain overextended fractures while promoting restricted fractures to facilitate uniform propagation. Pumping diversion balls to block the perforations of overlong fractures has become an important method to improve non-uniform fracture propagation. This method is, however, limited by lagging behind of theoretical simulation, and significant blindness in the current implementation of diverting fracturing. A dynamic propagation model for multiple-cluster hydraulic fractures was established in the current study by considering the stress interference effect between adjacent fractures and the effect of flowrate dynamic adjustment by diversion balls. This model is effective for the dynamic simulation of fractures propagation after pumping diversion balls. A fractured well in the Changning block was used as an example for the simulation of the dynamic fracture’s extension and the distribution of SRV before and after diversion. The findings showed that the temporary plugging ball significantly promoted the uniform extension. The number of temporary plugging balls, the number of diversions, and the timing of diversion were then optimized. The simulation method developed in this study has important theoretical significance and field application value in guiding regulation of uniform expansion of fractures and improving optimization of diverting fracturing design.
publisherThe American Society of Mechanical Engineers (ASME)
titleNumerical Simulation of Diverting Fracturing for Staged Fracturing Horizontal Well in Shale Gas Reservoir
typeJournal Paper
journal volume145
journal issue5
journal titleJournal of Energy Resources Technology
identifier doi10.1115/1.4056049
journal fristpage53202-1
journal lastpage53202-15
page15
treeJournal of Energy Resources Technology:;2023:;volume( 145 ):;issue: 005
contenttypeFulltext


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