Numerical Investigation of Fracture Network Formation under Multiple Wells
Joint Authors
Source
Mathematical Problems in Engineering
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-08-20
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
A two-step fracturing method is proposed to investigate the hydraulic fracture evolution behavior and the process of complex fracture network formation under multiple wells.
Simulations are conducted with Rock Failure Process Analysis code.
Heterogeneity and permeability of the rocks are considered in this study.
In Step 1, the influence of an asymmetric pressure gradient on the fracture evolution is simulated, and an artificial structural plane is formed.
The simulation results reflect the macroscopic fracture evolution induced by mesoscopic failure; these results agree well with the characteristics of the experiments.
Step 2, which is based on the first step, investigates the influence of preexisting fractures (i.e., artificial structural planes) on the subsequent fracturing behavior.
The simulation results are supported by mechanics analysis.
Results indicated that the fracture evolution is influenced by pressure magnitude on a local scale around the fracture tip and by the orientation and distribution of pore pressure on a global scale.
The constant pressure in wellbore H2 can affect fracture propagation by changing the water flow direction, and the hydraulic fractures will propagate to the direction of higher local pore pressure.
Furthermore, the artificial structural planes influence the stress distribution surrounding the wellbores and the hydraulic fracture evolution by altering the induced stresses around the preexisting fractures.
Finally, fracture network is formed among the artificial structural planes and hydraulic fractures when multiple wells are fractured successively.
This study provides valuable guidance to unconventional reservoir reconstruction designs.
American Psychological Association (APA)
Men, Xiaoxi& Li, Jiren. 2020. Numerical Investigation of Fracture Network Formation under Multiple Wells. Mathematical Problems in Engineering،Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1193512
Modern Language Association (MLA)
Men, Xiaoxi& Li, Jiren. Numerical Investigation of Fracture Network Formation under Multiple Wells. Mathematical Problems in Engineering No. 2020 (2020), pp.1-11.
https://search.emarefa.net/detail/BIM-1193512
American Medical Association (AMA)
Men, Xiaoxi& Li, Jiren. Numerical Investigation of Fracture Network Formation under Multiple Wells. Mathematical Problems in Engineering. 2020. Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1193512
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1193512