Another round of earthquakes with a magnitude of 3.1 or greater shook the northwest Friday.
U.S. Geological Survey reported the first earthquake at 12:27 a.m. Friday. It was a magnitude 3.5 quake and was located 17 miles east of Cherokee and 25 miles north-northwest of Enid. It was 3.1 miles deep.
The second was a 3.6 magnitude temblor recorded at 5:08 a.m. The epicenter was 7 miles northeast of Cherokee and 37 miles northwest of Enid. The earthquake was 2.8 miles deep.
Another earthquake was recorded at 9:17 a.m. It measured to be 2.6 miles deep and was a 3.1 magnitude. The epicenter was located 17 miles east of Cherokee and 24 miles north-northwest of Enid, almost the same location of the first earthquake that day.
No damage was reported with any of the quakes.
On Thursday, Oklahoma Corporation Commission announced more injection wells will be shut down or operate at reduced volume.
“The Commission’s Oil and Gas Conservation Division (OGCD) is expanding its efforts to reduce the risk of earthquakes potentially triggered by saltwater disposal wells,” according to a bulletin from Tim Baker, OGCD director, that was issued Thursday.
The commission directed four disposal wells within three miles of earthquake activity in the Byron and Cherokee area to stop operations. Another 47 wells further from the activity were requested to cut disposal volumes of 25 to 50 percent.
Disposal wells 10 to 15 miles from the earthquake activity in Cherokee are being placed on notice for possible operation changes. According to a release from the commission, the net volume reduction is 47 percent.