Tex. Nat. Res. Code § 85.060

The commission may require a person who produces, stores, transports, refines, reclaims, treats, markets, or processes oil or gas or the products of either to make and file with the commission sworn statements or reports as to facts within his knowledge or possession pertaining to the reasonable market demand for oil and to the production, storage, transportation, refining, reclaiming, treating, marketing, or processing of oil or gas and the products of either. The report shall include those facts enumerated in Section 85.059 of this code.