Section 91.504, Texas Natural Resources Code, gives an owner of a royalty interest in oil or gas produced in Texas the right to request from a payor information about itemized deductions, the heating value of the gas, and the Railroad Commission of Texas identification number for the lease, property, or well that may not have been provided to the royalty interest owner. The request must be in writing and must be made by certified mail. A payor must respond to a request regarding itemized deductions, the heating value of the gas, or the Railroad Commission of Texas identification number by certified mail not later than the 60th day after the date the request is received. An owner of a royalty interest in oil or gas may obtain information regarding production that has been reported to the Railroad Commission of Texas by contacting the oil and gas division of the commission or accessing the commission's website and providing the identification number of the lease and the county in which the lease is located.