Oklahoma

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‘EPA Tells Oklahoma State Isn’t ‘Doing Enough’ to Protect Citizens’

The letter to Oklahoma’s three corporation commissioners is especially relevant because of Oklahoma Attorney General Scott Pruitt’s pending appointment to head the EPA, Ziva Branstetter reports. “Pruitt would be in a position to alter the EPA’s request and position on induced seismicity in Oklahoma. Such an action would impact energy companies here that have partnered [...]

Oil and Gas Activity Likely Caused Widely Felt Western Oklahoma Earthquake, Study Suggests

Graphic showing stress change after the 5.1-magnitude earthquake that struck near Fairview in February 2016.

Wastewater injection into clusters of high-rate disposal wells likely triggered a 5.1-magnitude earthquake that struck western Oklahoma in February 2016, new research suggests. The earthquake near Fairview produced a large blast of seismic energy that spawned a series of widely felt aftershocks. The quake is now considered one of the largest ever linked to the [...]

EPA Recommends Disposal Moratorium in Oklahoma’s Most Earthquake-Prone Areas

20160906 - pawnee quake pics125_WEB

Officials with the U.S. Environmental Protection Agency say Oklahoma oil and gas regulators should “consider a moratorium” of waste-fluid disposal in its most seismically active areas. The suggestion was made in the federal agency’s annual review of the Oklahoma Corporation Commission’s oversight of disposal wells, which Energy Wire’s Mike Soraghan obtained through a Freedom of [...]

‘Quake Frequency Declines, Seismic Energy in Oklahoma Increases’

Though the rate of earthquakes “has declined from its peak,” the 5.8-magnitude earthquake near Pawnee has made 2016 the most seismically active year on record “as measured by seismic energy release,” Oklahoma Geological Survey Director Jeremy Boak tells the Enid News‘ Sally Asher. Studying seismicity: Quake frequency declines, seismic energy in Oklahoma increases ENID, Okla. [...]

State Regulators Expand Limits on Disposal Wells Near Labor Day Weekend Quake

Oklahoma Regulators Expand Limits On Disposal Operations Near Labor Day Earthquake Federal and state regulators on Monday expanded and modified emergency orders limiting oil and gas activity at wells near a fault line that produced Oklahoma’s strongest earthquake on record. Regulators are targeting 67 disposal wells in two counties near the damaging 5.8-magnitude earthquake that [...]

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