An oil, natural gas or other designation gas well or oil, natural gas or other designation gas lease which does not include a one-eighth metered royalty shall be subject to an escalation equal to one-eighth metered royalty when its original state is altered by new drilling, deeper drilling, redrilling, artificial well stimulation, hydraulic fracturing or any other procedure to increase production. A lease shall not be affected when the well is altered through routine maintenance or cleaning.
58 P.S. § 34