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Effect of Natural Fractures on Wormhole-Propagation Behavior

Authors
Jianye Mou (China University of Petroleum Beijing, State Key Laboratory of Petroleum Resources and Prospecting) | Xiaoshan Yu (Sichuan-to-East Natural Gas Transmission Pipeline Branch Company of SINOPEC) | Lei Wang (China University of Petroleum, Beijing) | Shicheng Zhang (China University of Petroleum, Beijing) | Xinfang Ma (China University of Petroleum, Beijing) | Xinrun Lyu (China University of Petroleum, Beijing)
DOI
https://doi.org/10.2118/191148-PA
Document ID
SPE-191148-PA
Publisher
Society of Petroleum Engineers
Source
SPE Production & Operations
Volume
34
Issue
01
Publication Date
February 2019
Document Type
Journal Paper
Pages
145 - 158
Language
English
ISSN
1930-1855
Copyright
2019.Society of Petroleum Engineers
Disciplines
Keywords
acid penetration, Monte Carlo, natural fracture, wormhole, modeling
Downloads
5 in the last 30 days
216 since 2007
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Summary

Natural fractures have significant influence on flow fields, thus affecting wormhole pattern in acidizing. This paper summarizes our research on wormholing behavior in naturally fractured carbonates. First, statistical natural-fracture models are established using the Monte Carlo method. Second, a two-scale continuum wormhole model is established to simulate wormhole propagation with natural fractures. Finally, extensive numerical simulation is conducted to investigate wormhole behavior and the effect of the natural-fracture parameters on wormhole pattern. In addition, possible wormhole-penetration distance is discussed. This study provides a theoretical basis for matrix-acidizing designs in naturally fractured carbonates.

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