Sec. 71.055.  ADDITIONAL TERMS OF LEASES.  A lease covered by this subchapter may provide:
(1)  that the entire acreage pooled into a unit shall be treated for all purposes except the payment of royalties as if it were included in the lease and drilling or reworking operations and production of oil or gas on any part of the unit shall be considered for all purposes except the payment of royalties as if the operations were on and production were from the land included in the lease whether or not the well or wells are located on the premises included in the lease;  and
(2)  that instead of the royalties provided in the lease, the lessor shall receive on production from a pooled unit only the proportion of the royalty provided in the lease as the amount of the lessor's acreage placed in the unit or its royalty interest on an acreage basis bears to the total acreage included in the unit.
Acts 1977, 65th Leg., p. 2506, ch. 871, art. I, Sec. 1, eff. Sept. 1, 1977.