Recently, industry has been using degradable solid particulate diverters with greater frequency in fracturing, refracturing, and acidizing operations. The main purpose of using diverters is to distribute the stimulation fluid uniformly between all clusters to enhance the ultimate production efficiency. However, although operators have been deploying this technology on a more widespread basis, they have not been as focused on the underlying mechanisms, physics and controlling parameters. The aim of this study is to use perforation-scale models to better understand particulate system plugging under downhole conditions and couple it to reservoir-scale simulations to thoroughly investigate the process and optimize the operational parameters accordingly. The proposed design engine and workflow enables operators to simulate multiple diversion scenarios, to compare the resulting fracture geometries, to assess stimulation efficiency, and to investigate the effect of diversion design on the production performance. Based on a field case study, our geomechanical analyses indicate that we can optimize the diverter design and customize operational parameters to enhance fracturing efficiency. Through accurate diverter design, operators are better equipped to develop uniform fractures from all planned clusters.
Solid-Particulate Diverter Optimization: Coupling Perforation-Scale Particle Transport to Field-Scale Fracturing Simulation
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Shahri, Mojtaba P., Huang, Jian, Smith, Clayton, and Francisco E. Fragachán. "Solid-Particulate Diverter Optimization: Coupling Perforation-Scale Particle Transport to Field-Scale Fracturing Simulation." Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, San Francisco, California, USA, June 2017.
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