  Understanding the behavior of fluid-driven hydraulic fracture in naturally
fractured reservoirs is crucial in the development of geothermal energy and
unconventional reservoirs. This study presents a fully-coupled numerical model
to investigate hydraulic propagation in naturally fractured reservoirs, along
with a comprehensive discussion on field observations. The results indicate
that, contrary to our common beliefs, "Complex Fracture" rather than "Fracture
Networks" is the norm in these naturally fractured reservoirs
