The search for oil and gas came to Warren County this week with seismic mapping in three locations.
A crew from Geokinetics from Houston, Texas, mapped stretches of road on Route 62 in Sugar Grove, on Market Street in Warren and North Warren, and on Pennsylvania Avenue near the Glade Bridge.
Peter Duncan, budget manager for Geokinetics, said on Friday that the geophysical survey is similar to property surveys, and begins by establishing a set of coordinates to determine a set of known points that includes the height above sea level.
Times Observer photos by Brian Ferry
Four Geokinetics trucks use vibration-generating equipment to take a seismic look beneath Route 62 in North Warren earlier this week.
The second phase involves the recording crew, which lays out reporting equipment that receives the data that is generated by the "thumper trucks".
The "thumper trucks" generate data through "a slight vibration" that puts an energy wave into the ground. The wave hits all the "subsurface formations and subsurface layers underground" and then bounces back to the reporting equipment.
Duncan described the process as "the world's greatest detective game."
It doesn't take much to make the reporting equipment respond, so the rain over the last week has hampered their work, Duncan said.
Duncan said the data from the trucks looks like a seismograph when it is entered into the computer. The data is then shipped off to a processing center and then the geophysicists interpret the data.
"It takes a minimum of 90 days before you are looking at finished data. There's a lot to it, it's not easy," Duncan said.
Geokinetics crews have done work in Mexico, Canada, South America and the Middle East, all part of "the never- ending search for oil and gas," he said.
Permission to do the tests was granted by the City of Warren and PennDOT, Duncan said.
Duncan couldn't say who he was working for as their clients are undisclosed.
'This is a general look to see if it's worthwhile to come back and do a more detailed survey," he said.
Geokinetics has worked throughout the Marcellus Shale region and will continue to head southeast near Route 6, Duncan said.