REPORT: Pennsylvania Shale Gas Operators Cited for 337 Well Casing Violations

By Alex Lotorto and Adam Hasz - Frack University, October 30, 2014

Disclaimer: The views expressed here are not the official position of the IWW (or even the IWW’s EUC) and do not necessarily represent the views of anyone but the author’s.

Link to the report

Shale gas operators have been cited for a total of 337 well casing violations in Pennsylvania out of an estimated 8,473 wells drilled.

According to the Pennsylvania Department of Environmental Protection’s compliance and well count data, there has been one well casing violation for every twenty-five wells drilled in the decade since unconventional shale gas development began.

Well casing violations are cited when the structural integrity of a shale gas well is lost. Improperly casing the borehole may result in contamination entering groundwater resources such as springs and aquifers. Well casing violations fall under seven categories, some of those categories include; improperly or insufficiently installed cement, failure to report insufficient or improper cement within a twenty-four hour period; and failure to case and cement to prevent migrations into fresh groundwater.

Two companies with the greatest number of casing violations include Chesapeake Energy, with fifty-four violations and Talisman Energy Inc with forty-one violations, each accounting for about six percent of their total well casing violations. Operators with ten or more wells who had the greatest percentage of well casing violations were Chief Oil and Gas and Exxon Mobil, both having approximately 11.5 percent of wells drilled with well casing violations.

The data review was completed by a partnership of environmental groups including Energy Justice Network and SustainUs.  Researchers sourced well count data from the PA DEP Spud Report and the well casing violations were counted using the online PA DEP Compliance Report, both available on the department’s website.

Energy Justice Network mission is to support communities threatened by polluting energy and waste technologies. Taking direction from a grassroots base and the Principles of Environmental Justice, EJN advocates a clean energy, zero-emission, zero-waste future for all.

SustainUS’ mission is “to empower young people to advance sustainable development. Through proactive education, research and advocacy at the policy-making level and at the grassroots, we are building a future in which all people recognize the inherent equality and interdependence of social, economic, and environmental sustainability. We strive to reflect our values through the diversity of members and projects, our ongoing commitment to educating ourselves and others, and the way we live our lives.”