Before the Marcellus Shale was actively drilled in Pennsylvania, starting with Range Resources in 2004, there was natural gas drilling in the state for many years. In fact, although about 5,000 Marcellus Shale or “deep” natural gas wells have been drilled in the past eight years, there are about 50,000 conventional or “shallow” natural gas wells scattered throughout the state, drilled over the past 50+ years. Ever wonder how conventional and unconventional wells stack up?
An article in the Pittsburgh Tribune-Review does a good job of comparing the two types of wells. Here’s a few interesting facts and figures: