La. Admin. Code tit. 43 § XIX-123

Current through Register Vol. 50, No. 9, September 20, 2024

Section XIX-123 - Oil and Gas Measurements

A. Quantities of oil shall be computed from correctly compiled tank tables and no deduction shall be taken therefrom. Corrections shall be made for temperature to the basis of 60 degrees F in accordance with Table 6 in ASTM Designation: D 1250-IP Designation: 200. The full per centum of B.S. and W. as shown by the centrifugal or other tests shall be deducted after making correction for temperature.

B. Combined Correction Tables for making both temperature and B.S. and W. correction at the same time may be used, if the combined tables are based on the above-mentioned Abridged Volume Correction Table for Petroleum Oils, and if the factors are calculated in such a manner that they give the same results as would be obtained by making the temperature correction and the B.S. and W. deduction separately.

C. A cubic foot of gas is hereby defined as that amount of gaseous hydrocarbons contained in a cubic foot of space at the base temperature of 60 degrees F and an absolute pressure of 14.4 lbs./sq. in. plus 10 oz./sq. inch, which temperature and pressure are referred to as the base temperature and pressure, respectively.

D. Basic orifice coefficients used in the calculation of gas flow shall be those contained in the American Gas Association's Gas Measurement Committee Report Number 1 and Number 2, or some other basic orifice coefficients generally accepted in the industry and approved by the Department of Conservation, such as those published by the Foxboro Company, American Meter Company, and Pittsburg Equitable Meter Company. Corrections for base pressure, base temperature shall be made. Corrections for supercompressibility are recommended when equal to or greater than one percent in cases where data are available. Corrections for Reynolds number and expansion factor are recommended only in cases where their combined correction is equal to or exceeds 1 percent.

E. Gas measurements with Pitot tubes shall be based on Reid's formula and shall follow recommendations similar to those set forth in Appendix 4 of the Bureau of Mines Monograph 7. Corrections for base pressure, base temperature, shall be made as in orifice measurements.

F. Gas measurements with orifice well tests shall follow recommendations similar to those set forth in Bulletin Number E-7 of the American Meter Company. Corrections for base pressure and base temperature, and gravity shall be made as in orifice measurements.

La. Admin. Code tit. 43, § XIX-123

Adopted by the Department of Conservation (August 1943), amended (January 1954), (May 1973).

AUTHORITY NOTE: Promulgated in accordance with R.S. 30:4 et seq.