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PowerPoint Presentation - XDT Geothermal Exploration

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					XDT on Geothermal Exploration

   Understand Seismology, and you’ll
      Understand the Subsurface
You don’t need to drill to know what's going on
 beneath your feet. XDT uses passive seismic
 signals to accurately describe the subsurface.
XDT has great experience with few staff. Therefore, we
        can offer expert services at low costs.

                                Ph.D. – University of Washington, 1989
                                B.S. - University of Illinois, 1979

                                Seismologist and Volcanologist, Dr.
                                Jonathan Lees knows earthquakes



                                 B.S. – North Carolina State
                                 University

                                 Alex Miller blends environmental
                                 science with geophysics.
                                       Subsurface
                                       Structures

Geothermal exploration is more than
finding where the heat is. Its finding
         the best way to it.
                                            Subsurface
                                            Densities
                          Fissures
          Rock Types      and
                          Anisotropy
  XDT provides innovative and proven
techniques of analysis. There aren’t any
           black boxes here.
     Shear wave splitting – can be used in identifying fissures and
    other anisotropic elements. Click the earthquake circle below.

                                                        Seismometers




                                                                 Subsurface cracks
                                                                 and fissures




Earthquake

                             When the shear waves generated from the earthquake
                             propagate through the cracks, polarization occurs. The
                             different arrival times from the split s-waves can be
                             measured to model where the foliation or fissures occur.
     Wave Attenuation and Velocity – used to identify subsurface
         characteristics. Click the earthquake circle below.

                                                        Seismometers




Earthquake

                           When passive seismic waves propagate through differing
                           bodies, attenuation and changes in velocity occur. The
    Subsurface Body        different arrival times and amplitudes can be measured to
                           model the properties and locations of the subsurface bodies.
  Not only are our techniques innovative,
    but our software is one of a kind.
               Radiation
               Patterns
                             Filtering
                                     Seismic Data
                                               Spherical Distribution
                                     Conversions
        Moveout Seismic Tomography             Graphing
        Displays
           Interactive MapsCross Sections Focal Mechanism
                                             Plotting
        Tomography            Great Circles
                Time Series              Area Analysis Time
                                                 Arrival
                analysis                         Predictions
Deconvolution
                 Ternary Plots Spectrograms

  Tomographic Inversion                   Zoeppritz Equations
      Want to know what’s going on in Enhanced
    Geothermal Systems (EGS)? Show us the seismic.



Seismometers



     Granite Body


  Fissures/Cracks

     Geothermal
     Source
Upcoming Geothermal Projects? Give
    us a call, we’re interested.


Alex Miller
Email: ajcmiller@xdtek.com
Phone: (919) 624-1251
Skype: alex_levi_miller

Jonathan Lees
Email: jonathan.lees@unc.edu

				
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posted:4/6/2011
language:English
pages:10