Yes. There is not exception the state's income tax for income from mineral rights or gas leases. Moreover, it appears the the state does not allow a deduction for depletion, which will impact your state taxes. I suggest following the links below for more information.
https://www.picpa.org/articles/cpa-now-blog/cpa-now/2015/01/30/tax-issues-for-pennsylvania-gas-lease...
http://www.revenue.pa.gov/GeneralTaxInformation/TaxLawPoliciesBulletinsNotices/Documents/Information...
