a) Natural gas is transported through pipelines from production wells to petroleum refinery. However, natural gas transportation through pipelines is significantly affected by the gas flow rate. Calculate the natural gas flow rate through the pipeline using data in Table Q4 (a). Table Q4 (a): Pipelines specifications for natural gas processing [12 marks] b) An orifice meter equipped with pipe taps, with static pressure from downstream tapping is used to measure the amount of gas going into the export pipeline from production platform. The 5" orifice bore is located inside the NPS 16(14.688 internal diameter) export pipeline boundary. The static pressure taken from downstream is 600psig with flowing temperature of 85F. The differential pressure reading is 38 height in water using the manometer. The specific gravity is 0.68 at 90F ambient temperature. Use base and atmospheric pressure of 14.73psia, base temperature of 60F and the z correction factor of 0.88. Calculate the flow rate measurement. [15 marks]