Ohio has 23 drilling rigs at work, according to last Friday's count by Baker & Hughes.
That total is the same as the Oct. 12 count and an increase of one rig from the Oct. 5 count.
The Ohio Department of Natural resources lists 24 rigs at work in Ohio's Utica shale.
Pennsylvania has 66 rigs at work and West Virginia has 26, according the weekly count by Baker & Hughes.
In the U.S., there are 1,839 rigs, an increase of four from a week ago, Baker & Hughes says.
That total is a decrease of 174 rigs from a year ago.
Texas has 867 rigs with Oklahoma with 189, North Dakota with 179 and Louisiana with 105 rigs.
Chesapeake Energy Corp,the Oklahoma-based firm is the No. 1 driller in Ohio.
Rig Count Interactive Map by Baker Hughes, an energy services company.
Shale Sheet Fracking, a Youngstown Vindicator blog.
The Ohio Environmental Council, a statewide eco-group based in Columbus.
Earthjustice, a national eco-group.
People's Oil and Gas Collaborative-Ohio, a grass-roots group in Northeast Ohio.
Concerned Citizens of Medina County, a grass-roots group.
No Frack Ohio, a Columbus-based grass-roots group.
Fracking: Gas Drilling's Environmental Threat by ProPublica, an online journalism site.
Pipeline, blog from Pittsburgh Post-Gazette on Marcellus shale drilling.
Allegheny Front, environmental public radio for Western Pennsylvania.