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3-D geoseismic mapping helps firms find natural gas.

Publication: Arkansas Business
Publication Date: 16-FEB-09 		Format: Online
Delivery: Immediate Online Access

Article Excerpt
POCKETS OF NATURAL GAS lie beneath the surface in north-central Arkansas.

First recognized as extractable by Southwestern Energy Co. in 2005, the gas company--and many others that followed--have sought since to determine the most economical method for pumping the resource out of the Fayetteville Shale Play.

Geoseismic mapping has become the go-to technology for locating the gas pockets. The process creates an image of a region's geology similar to how a magnetic resonance imaging machine, or MRI, maps a human body to allow doctors to see what lies beneath a patient's skin. The geoseismic images of subsurface terrain allow those drilling wells to understand where impediments exist and to alter a drill's course to avoid problems, thereby improving a well's efficiency.

"We use the 3-D to see where faults are, the depths of the shale and the thickness, and doing...

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