CPC C10G 70/043 (2013.01) [C10G 5/06 (2013.01); C10L 3/103 (2013.01); C10L 3/106 (2013.01); C10G 2300/1037 (2013.01); C10L 2290/06 (2013.01); C10L 2290/46 (2013.01); C10L 2290/48 (2013.01); C10L 2290/58 (2013.01); C10L 2290/60 (2013.01)] | 20 Claims |
1. A method of recovery of rich gas, the method comprising:
flowing crude oil to a 2-phase separator to form a sales gas stream and a liquid hydrocarbon stream;
flowing the liquid hydrocarbon stream to a heater treater to form a first rich gas composition comprising less than 50 mol % methane and an oil stream;
flowing the oil stream to an oil storage tank, the oil storage tank comprising a second rich gas composition in a headspace thereof comprising less than 50 mol % methane;
compressing the first rich gas composition and the second rich gas composition;
cooling the compressed first rich gas composition and the compressed second rich gas composition in one or more condensers so that a portion thereof condenses to form a liquefied gas and liquefied gas vapor in the condenser; and
discharging the liquefied gas and liquefied gas vapor from the condenser.
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