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Our look at
DAWSON GEOPHYSICAL

An orange four-cornered safety sign marked SEISMIC CREW AHEAD is a sure sign your area is being surveyed for gas deposits in geological formations. Dawson Geophysical Company, based in Midland Texas, is one of the leading companies performing these 2D and 3D and multi-component land seismic data imaging services on Marcellus Shale, using vibrator crews and dynamite crews.
  
Below are some photos of what a
seismic survey will look like to the average citizen, from the warning signs, to the wires duct-taped to the roads, the orange surveyor stakes with numbers and letters, the strange looking 'thumper trucks' and a host of vans and golf cart sized vehicles. It's a convention of vehicles and equipment.
  
Some cords lead to dynamite charges that are placed 20-feet underground and later detonated to help perform seismic surveys by the dynamite crews. Alien-looking
Thumper Trucks are used by the vibrator crews. Designated sections, or grids, are surveyed one grid at a time. Seismic crews use Garmin GPS units for their mapping, and helicopters may play an additional role in some geological surveys.

SEISMIC CREW AHEAD
  

Corporate Headquarters
Dawson Geophysical

508 West Wall – Suite 800
Midland, Texas  79701
Phone: 1-800-332-9766


   

Seismic survey photos on
Marcellus Shale

  
Seismic cords on road
Orange cords traverse the roadways through a thick
protective coating that is duct-taped to the road
  
  
Seismic cords
Miles of orange cords connect seismic survey equipment
  
  
Seismic survey stakes
Orange surveyor stakes marked with letters and
numbers are used in the seismic survey
  
  
Seismic "Thumper Trucks"
Three thumper trucks between some tractor trailers.
  
  
Dawson seismic site
Dawson seismic crew has set up shop in
this rural Pennsylvania field
  
  
Thumper Truck
Dawson thumper trucks each have 62,000-pound
(31-ton) peak force Vibroseis equipment.
  
  
YouTube video of thumper trucks in action
 
 
 
Dawson thumper truck with vibroseis equipment

 
  
 
  

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