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Large-Volume Stimulation of Rock for Greatly Enhanced Fluids Recovery Using Targeted Seismic-Assisted Hydraulic Fracturing
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The overall objective of this project is to develop and demonstrate a new technology for large-volume, targeted comminution of rock in low permeability formations to enhance recovery of unconventional oil and natural and gas (UOG) resources.


Oklahoma State University (OSU), Stillwater, OK 74078

The University of Tulsa, OK 74104


This project develops and demonstrates a new technology for large-volume and targeted comminution of rock in low permeability formations to enhance recovery from UOG resources. The technology is based on a strategically designed interaction of multiple induced seismic pulses that assist the hydraulic fracturing process to enhance shear and multi-planar crack formation.  To develop and demonstrate the proposed technology, this project investigates two aspects of multi-source excitation.  This increased stimulated rock volume stimulation is expected to result in significant increases in permeability leading to increased recovery factors for sub-surface fluids. The proposed technology is especially applicable for enhanced recovery in emerging UOG plays, such as ductile shales that are resistant to opening-mode fracturing by conventional hydraulic fracturing processes.


Increased recovery factors directly reduce the environmental impact of UOG resource development. To achieve higher recovery factors requires a fundamental understanding of the basic processes that govern interaction between well completion and stimulation activity, and reservoir dynamics. This challenge is addressed by developing a new technology that utilizes dynamic failure phenomena for large-scale stimulation of rock to yield increased resource recovery.

Accomplishments (most recent listed first)
  • Quantitative composition analysis using XRD/XRF
  • Non-destructive micro-CT analysis of shale shows internal cracks
  • Macropore and mesopore analysis of shales with Mercury Intrusion Porosimetry (MIP)
  • Dynamic compression tests have been conducted to collect data on damage progression. This data is being evaluated as an input into the numerical models. Specimens have been machined and fabricated for the 2D stress wave–crack interaction experiments.
  • Two manuscripts and one patent disclosure are currently under preparation. This work was presented at the annual Society of Experimental Mechanics conference for 2021 titled  “Dynamic Damage Evolution in Shale in the Presence of Pre-existing Microcracks”
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DOE Contribution


Performer Contribution


Contact Information

NETL — Anthony Zammerilli ( or 304-285-4641)
OSU — Raman Singh ( or 918-594-8155)