Comparative Study of the Effects on the Fracture Initiation Mechanism between Single Plane Perforation and Helical Perforation Shots Using Numerical Simulation

Kang-Xing Dong; Su-Ling Wang; Min-Zheng Jiang

doi:10.6180/jase.201903_22(1).0004

Comparative Study of the Effects on the Fracture Initiation Mechanism between Single Plane Perforation and Helical Perforation Shots Using Numerical Simulation

$Schematic diagram of hydraulic fracturing.$

Kang-Xing Dong¹, Su-Ling Wang This email address is being protected from spambots. You need JavaScript enabled to view it.¹ and Min-Zheng Jiang¹

¹College of Mechanical Science and Engineering, Northeast Petroleum University, Daqing, P.R. China

Received: November 27, 2017
Accepted: September 11, 2018
Publication Date: March 1, 2019

Download Citation: ||https://doi.org/10.6180/jase.201903_22(1).0004

ABSTRACT

Single plane perforation technology is a new perforation technology to improve results in the fracture area around a wellbore. By establishing an in-situ stress mechanical model of the perforated formation, the effect of single plane perforation and helical perforation on hydraulic fractures was studied using numerical analysis methods. The results showed that a fracture was initiated in the perforation plane first and then formed a fan-shaped fracture surface when using single plane perforation. Regardless of the damage of perforation on the rock mass, the initiation pressure of the single plane perforation was higher than that of the helical perforation under a normal fault regime and lower under a reverse fault regime. The initiation pressure decreased with an increase in perforation depth and perforation diameter. This technology is important for reducing the fracture initiation pressure and increasing the stimulated reservoir volume.

Keywords: Single Plane Perforation, Helical Perforation, Perforation Parameters, Cracks Form, Initiation Pressure

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