Numerical Simulation of Deflection Fracturing with Finite Element Method Considering Crack Initiation Angle

Abstract:

Aimed at deflection fracturing by oriented perforation, a two-dimensional, non-steady and two-phase Finite Element Method (FEM) is established. Taking a battery of wells in the inverted nine-spot rhombus pattern as object of study, it is reported that law of different crack initiation angle (CIA) affecting deflection fracturing. In the respect of daily oil production and cumulative oil production, the dual fracture with different CIA is more than straight fracture. So it is feasible to use deflection fracturing of oriented perforation to increase the production of the special low permeability oilfield. In contrast to dual fractures with different fracturing initiation angles, we can see that the wider CIA, the higher cumulative oil production. So we can draw such a conclusion that when deflection fracturing is implemented, angle should be increased if the working condition is permitted so as to increase the production of oil well.

• Periodical: Advanced Materials Research (Volumes 712-715)
• Pages: 1027-1031
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.712-715.1027
• Online since: June 2013
• Authors: Zhen Yu Liu*, Ping Ping Zhang, Hu Zhen Wang, Xiang Rong Zhu
• Keywords: Crack Initiation Angle, Deflection Fracturing, Finite Element, Numerical Simulation, Oriented Perforation

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