Sec. 8. FILING BIDS; DISCONTINUANCE OF YEARLY PAYMENTS; TERMINATION OF LEASE. If the Board shall determine that a satisfactory bid has been received for said oil and gas, it shall be filed in the General Land Office. Whenever the royalties shall amount to as much as the yearly payment as fixed by the Board, the yearly payment may be discontinued. If before the expiration of three (3) years oil and/or gas shall not have been produced in paying quantities, the lease shall terminate.