Research on Hydrate Risk Prediction in Deepwater Submarine Natural Gas Transmission Pipelines

Liu, Wenyuan (China University of Petroleum – Beijing) | Hu, Jinqiu (China University of Petroleum – Beijing) | Sun, Fengrui (China University of Petroleum – Beijing) | Sun, Zheng (China University of Petroleum – Beijing) | Chu, Hongyang (China University of Petroleum – Beijing) | Li, Xiangfang (China University of Petroleum – Beijing)

OnePetro 

Hydrates generation-blockage in submarine natural gas pipelines has always been related to the safety of deepwater natural gas production and transportation. However, the current hydrate formation risk prediction in subsea pipelines is still immature. In this paper, a model for evaluating the risk of hydrate formation in submarine natural gas pipelines has been established. The model has been applied and the sensitivity analysis of typical factors has been carried out. The results show that: (a) owing to the low temperature of the seabed, hydrate formation region (HFR) often exists in submarine pipelines. Avoiding HFR by injecting inhibitors is the key to ensure the safe transmission.