Abstract: Light hydrocarbon is an associated by-product produced in the process of oilfield exploitation. Light hydrocarbon recovery refers to the process of recovering the heavy components in natural gas in liquid form. The natural gas produced by an oilfield is used for turbine power generation,and the remaining natural gas is burned and vented through flare. In order to make rational use of oilfield light hydrocarbon resources,eliminate the impact of light hydrocarbon on equipment process in time,and reduce the environmental pollution caused by insufficient combustion of light hydrocarbon,an efficient and low-cost light hydrocarbon recovery and transformation scheme is designed. By optimizing and upgrading the treatment process of condensate separator of low-pressure compressor,the recovery and utilization of light hydrocarbon is realized. The successful implementation of the scheme has successfully solved the problems of black smoke of oilfield flare and resource waste,which has high reference and popularization significance.

Key words: light hydrocarbon, flare black smoke, recovery and utilization, economic benefit