La. Admin. Code tit. 43 § XIX-903
Barrel or Barrel of Oil- forty-two United States gallons of oil at a test of 60º F with deductions for the full percent of basic sediment, water and other impurities present, ascertained by centrifugal or other recognized and customary tests.
Field- the general area which is underlaid or appears to be underlaid by at least one pool or reservoir of oil as designated by monthly proration schedules issued by the Office of Conservation of the state of Louisiana.
Lease Tank- the tank or other receptacle into which oil is produced either directly from a well or from a well through gas separator, gun barrel or similar equipment.
Month and Calendar Month- the period or interval of time from 7 a.m. on the first day of any month of the calendar to 7 a.m. of the first day of the next succeeding month of the calendar.
Person, Producer, Oil, Illegal Oil, and Product- the meaning prescribed for each of said words as defined in R.S. 30:3.
Refiner- every person who has any part in the control or management of any operation by which the physical or chemical characteristics of oil or products are changed, but exclusive of the operations of passing oil through separators to remove gas, placing oil in settling tanks to remove basic sediment and water, dehydrating oil, and generally cleaning and purifying oil.
Storer- every person as herein defined who stores, terminals, retains in custody under warehouse or storage agreements or contracts, oil which comes to rest in his tank or other receptacle under control of said storer, but excluding the ordinary lease stocks of producers.
Transporter- includes any common carrier by pipe line, barge, boat or other water conveyance or truck or other conveyance except railroads, and any other person transporting oil by pipe line, barge, boat or other water conveyance, or truck and other conveyance.
La. Admin. Code tit. 43, § XIX-903