Animated Map Shows Vertical vs Horizontal Gas Wells in PA

The U.S. Energy Information Administration (EIA) has created a very cool animated map showing the transition from conventionally drilled, vertical natural gas wells to unconventional, horizontally fracked natural gas wells (Marcellus wells) from January 2005 to April 2012 (a copy of the video is embedded below). Just as cool—and startling—are a couple of bar charts (also embedded below) showing the dramatic increase in the volume of natural gas production in PA while at the same time the number of gas wells, the number of holes drilled in the ground, has gone down! How can that be?

Fracked horizontal wells drilled in shale formations are far more productive than conventional, vertically drilled wells.

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