A review on the methane emission detection during offshore natural gas hydrate production

Due to the high energy density, large potential reserves and only release CO 2 water after combustion, natural gas hydrate (NGH) is considered as most likely new clean source replace traditional fossil (crude oil, gas, etc. ). However, unlike exploitation of energy, essence induce production methane by artificially decompose simultaneously collect generated methane. Because uncontrollable decomposition, percolation collection efficiency, emission inevitably occurred during exploitation, which could significantly affect environmental friendliness hydrate. In this review, detection was divided into three interfaces: Seafloor sediment, seawater, atmosphere. Meanwhile, according summary analysis existing technologies devices, it concluded that can identify quantify amount in interfaces, although accuracy different. For quantifying impact predicting diffusion path methane, especially strata should be focus subsequent research.