Oklahoma Administrative Code
Title 385 - Department of the Commissioners of the Land Office
Chapter 15 - Sale and Operation of Oil and Gas Leases
Section 385:15-1-23 - Measurement standards for oil and gas removal
Current through Vol. 42, No. 7, December 16, 2024
Measurement standards for oil and gas removal shall be as follows:
(1) Oil tanks and tank batteries.
(2) Oil tank requirements.
(3) Oil measurement.
(4) Oil temperature. Oil temperature shall be taken at the same time oil is measured. The temperature shall be representative of the average temperature of the entire body of oil from the tank bottom to the top of the liquid surface. The temperature in tanks with a capacity less than 500 barrels shall be taken by suspending a standard thermometer for at least five minutes, at a point not less than twelve inches from the side of the tank, and midway between the tank bottom and the top surface of the oil.
(5) Oil sample. The observed A.P.I. gravity and hydrometer temperature shall be taken in a sample representative of the merchantable body of the oil and shall be taken and recorded at the time of measurement. Samples shall be tested for gravity from a sealed sample and not by an unsealed (open vapor) hydrometer.
(6) Instruments of measurement. All instruments used in determining temperature, A.P.I. gravity, water, and sediment shall be of a standard make, of reputable manufacture, accurately calibrated, and in good working order.
(7) Oil gravity and volume. The observed gravity and the observed volume of oil shall be corrected to the standard of 60 degrees Fahrenheit consistent with National Standard of Petroleum Tables.
(8) Run tickets. Run tickets shall be legible, properly executed at the time measurements are taken, and shall contain all information necessary to complete final calculations. Lessee shall furnish the original run tickets or a carbon copy to the Land Office, upon request.
(9) Gas metering. Gas of all kinds shall be subject to royalty and shall be measured by a meter approved for general use by the oil and gas industry. All measurements shall be adjusted to conform to the Standard Gas Measurement Act.
(10) Gas measurement. Tests to determine the approximate natural gas liquid and non-hydrocarbon gas content of gas delivered to plants processing natural gas liquids and non-hydrocarbon gas shall be provided by the lessee at the request of the Land Office to check plant efficiency and to obtain an equitable basis for allocating the natural gas liquid and non-hydrocarbon gas output of any processing plant.
Amended at 14 Ok Reg 3171, eff 7-25-97