LAC 43:XIX.4921. Water, Gas and Geothermal By-Products Measurements

A. “Gallon” shall mean one (U.S.) gallon or 3.7852 liters of fluid at a temperature of 60° F and a pressure of 14.73 psia. B. Pressure and temperature shall be measured at the wellhead for purposes of determining the energy content of the water. The volume (gallons) of the water and attendant temperature and pressure shall be measured and recorded after gas removal. 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° F and an absolute pressure of 14.4 lbs./sq.in. plus 10 oz./sq. in., which temperature and pressures 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 No. 1 and No. 2, or some other basic orifice coefficients generally accepted in the industry and approved by the Office of Conservation, such as those published by the Foxboro Company, American Meter Company, and Pittsburg Equitable Meter Company. Corrections for base pressure and base temperature shall be made. Corrections for super-compressibility 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 corrections equal to or exceed one 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 and 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 #E-7 of the American Meter Company. Corrections for base pressure and base temperature, and gravity shall be made as in orifice measurements. G. The wellstream shall be sampled at the wellhead quarterly and appropriate chemical analysis determined and recorded. By-products shall be measured using customary units and the results recorded.