Previous Talks

Wednesday March 14, 2012

Growth of Multi-stranded Hydraulic Fractures and its implications on Frac Jobs Design and Implementation

Arash Dahi-Taleghani, Department of Petroleum Engineering, Louisiana State University


The recent advancements in fracturing technology have generated more interest in pursuing novel techniques such as simultaneous frac jobs, zip-fracs and multi-stage fracturing. The diagnostic data from these treatments also suggests complex, multi-stranded fracture zones as a result of interaction between different competing fracture strands. Explanation and prediction of fracture patterns in these cases are not possible without a deep understanding of the mechanism behind the competition between different fracture tips. A stability analysis for hydraulic fracturing growth and its implementation using numerical methods will be discussed in this talk. Several examples are provided to show the significance of stability analyses in fracturing treatments. The fracture propagation modeling demonstrated using this numerical method could be the key to determining efficient perforation and spacing in hydraulic fracture design analysis, as well as evaluating novel techniques such as sequential or simultaneous fracturing within a single or multiple horizontal wellbores.

Speaker Biography

Arash Dahi-Taleghani is an assistant professor in the department of Petroleum Engineering at the Louisiana State University (LSU). A particular focus of his research has been on mechanistic modeling of hydraulic fractures especially in the presence of natural fractures. He is also conducting research on geomechanical aspects of underground blowout, zonal fractures at injector wells, microseismicity and geothermal engineering. Arash has a PhD in Petroleum Engineering from The University of Texas at Austin and is a registered engineer in the state of Texas.