The U.S. Energy Information Administration (EIA) said last week natural gas production in Pennsylvania increased 69% in 2012, despite a reduction in drilling activity.

According to the EIA, data from the Pennsylvania Department of Environmental Protection (DEP) showed natural gas production in the Keystone State averaged 6.1 Bcf/d in 2012, up from 3.6 Bcf/d in 2011.

The EIA said data from the DEP indicated that a significant portion of the wells that began producing in 2012 had actually been drilled earlier. “As infrastructure expanded, these wells were gradually connected to pipelines, sustaining natural gas production increases through 2012 despite the decline in new natural gas well starts,” the EIA said.

Earlier this month, energy analysts with Barclays Capital said there is currently enough of a drilling backlog in the Marcellus that if wells were brought online over a one-year period, production would continue to grow but at a slower pace (see NGI, March 11a). They said DEP data showed a backlog of 1,432 unconventional wells during the second half of 2012.

Also noteworthy, the EIA said, were Marcellus Shale operators reducing their drilling times and achieving higher production per well, which the agency attributed to improvements in drilling and completion techniques.

Earlier this month, DEP production reports showed natural gas production from unconventional sources in Pennsylvania hit a record 2.04 Tcf in 2012, edging ahead of the Barnett Shale in Texas for the first time (see NGI, March 11b).

The EIA said that since natural gas production has been increasing so rapidly in Pennsylvania, it has proposed adding the Keystone State, and at least 11 others, to the agency’s monthly natural gas production survey, also known as EIA-914. The EIA said the monthly report “would provide more timely reporting of Pennsylvania’s rising production.”

The DEP’s Office of Oil and Gas Management currently publishes six-month reports covering all production from unconventional wells, and does not break it down by shale/tight gas and oil plays. The DEP said the change was mandated by Act 13, the state’s omnibus Marcellus Shale law.

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