Regulations Respecting Reduction in the Release of Methane and Certain Volatile Organic Compounds (Upstream Oil and Gas Sector) — 24
Determination of gas-to-oil ratio 24 (1) The determination of a gas-to-oil ratio for the purpose of clause 23 (2)(b)(ii)(A) is made using the formula G/O where G is the average volume of gas produced by the well measured over a continuous period — of at least 72 hours or at least 24 hours, determined, as the case may be, in accordance with subsection (2) or (3) — under conditions, in particular in respect of flow rate and operating conditions, that are representative of the conditions that occurred during the most recent month of production; and O is the average volume of oil produced by the well over the period that is used for the determination of G, based on measurements taken in accordance with subsection (4) as prorated to that period and under conditions, in particular in respect of flow rate and operating conditions, that are representative of the conditions during the most recent month of production. Determination of value of G (2) The measurements to determine the value of G must be taken over a continuous period of at least 72 hours with a continuous measuring device or using a flow meter with at least one reading taken every 20 minutes. Exception (3) Despite subsection (2), the measurements to determine the value of G may be taken over a continuous period of at least 24 hours, if (a) the flow rate of gas from the well is greater than 100 standard m 3 per day; and (b) the measurement is taken (i) with a continuous measuring device and the variation of flow rate in that continuous period is such that the average flow rate for any 20-minute period is within ±5% of the average flow rate, or (ii) using a flow meter with at least one reading taken every 20 minutes within that continuous period and the variation of flow rate in that continuous period is such that 95% of the readings taken are within ±5% of the average flow rate. Determination of the value of O (4) The measurements to determine the value of O must be taken after the water has been separated from the liquid produced from the well and taken (a) over the continuous period used to determine the value of G with a continuous measuring device that has a maximum margin of error of ±0.1 standard m 3 ; or (b) over a continuous period of at least 10 days that includes the continuous period used to measure G with a continuous measuring device that has a maximum margin of error of ±1 standard m 3 and with the variation of flow rate in that continuous period such that the measured volume of oil produced for any day is within ±5% of the measured volume of oil produced for any other day in that continuous period. Steady state (5) A measurement taken under any of subsections (2) to (4) must be taken while the well is operating in a steady state, that is, it must be taken only if no adjustment that could result in a change to the oil or gas production rates has been made to the production parameters for at least 48 hours before the measurement is taken. Measuring equipment — directives (6) The continuous measuring device or flow meter used to determine the gas-to-oil ratio must meet the requirements of section 2 of the Saskatchewan Directive PNG017 or section 2 of the AER Directive 017. Frequency of determination (7) A determination of the gas-to-oil ratio must be made (a) at least once per year and at least 90 days after a previous determination, if (i) in the case of an initial determination, the expected flow rate of the gas is at most 500 standard m 3 per day, and (ii) in any other case, the flow rate of the gas according to the most recent determination was at most 500 standard m 3 per day; (b) at least once every six months and at least 45 days after a previous determination, if (i) in the case of an initial determination, the expected flow rate of the gas is greater than 500 standard m 3 per day and at most 1 000 standard m 3 per day, and (ii) in any other case, the flow rate of the gas according to the most recent determination was greater than 500 standard m 3 per d