Seismogenic process of fluid injection revealed by in situ dynamic CT scanning

<p>In the process of unconventional energy exploitation, large volumes of fluid are injected into low permeability reservoirs for hydraulic transformation to generate a fracture network conducive to fluid migration. Unfortunately, extensive fluid injection can induce earthquakes, endangering human lives and causing serious economic losses. Understanding the seismogenic process of fluid injection within a reservoir helps to minimize the induced earthquakes. To better monitor the deformation changes in reservoirs, we conducted in situ dynamic X-ray computed tomography (CT) during a series of experiments lasting 3 minutes for real-time identification of the location and geometry of hydraulic fractures and found that the seismogenic process of fluid injection with a wide range of frequencies is triggered by water&ndash;rock interactions.</p> <p>The data we uploaded can be divided into&nbsp;two main parts. The first part is the&nbsp;confining, axial and water injection pressures recorded during the&nbsp;hydraulic fracturing experiment. The second part is the CT scans of the rock sample during the hydraulic fracturing experiment.</p>