垂直充气管道中水合物沉积的水合物管理

A. Sum, Xianwei Zhang, Jeong-Hoon Sa, B. Lee, T. Austvik, Xiaoyun Li, K. Askvik
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引用次数: 2

摘要

死腿是指在油气生产系统中间歇使用的管段或特殊服务。死腿通常会给油气生产系统带来水合物控制方面的挑战,因为内部流体接近停滞状态,因此在没有适当隔热或热伴的情况下,可能会被环境迅速冷却。水蒸气可以在死腿中凝结,从而导致潜在的水合物风险。随着时间的推移,死亡通道可能会被水合物完全堵塞。水合物的挑战,如果处理不当,可能会对油气生产的安全和成本造成严重后果。为了更好地了解水合物在死腿中的沉积过程和机理,进行了系统的研究。为了通过实验研究水合物在死腿中的沉积,设计并构建了实验室规模的死腿系统,考虑了1-、2-、3-和4-in的管道尺寸。内径约50英寸。长。这些管道充满气体,并被管道底部的蓄水池中的水饱和。实验工作的重点是在不同的油藏温度(30 ~ 80℃)、管壁温度(-10 ~ 15℃)和持续时间(1 ~ 84天)下测量水合物沉积和堵塞情况。测量结果为水合物沉积的动态过程提供了见解,例如水合物沉积、堵塞和沿管道分布的机制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Hydrate Management for Hydrate Deposition in Gas-Filled Vertical Pipes
Deadlegs are defined as pipe sections in intermittent use for production or special services in oil/gas production systems. Deadlegs often pose hydrate control challenges to gas and oil production systems as the fluid inside is close to stagnant and therefore can be rapidly cooled by the environment without proper insulation or heat tracing. Water vapor can condense in the deadleg, resulting in a potential hydrate risk. Over time the deadleg may be blocked completely by hydrates. The hydrate challenges, if not properly managed, can cause severe consequences in terms of safety and cost for oil/gas productions. A systematic study has been performed to better understand the process and mechanism of hydrate deposition in deadlegs. To study hydrate deposition in deadlegs experimentally, laboratory scale deadleg systems were designed and built to consider pipe sizes of 1-, 2-, 3-, and 4-in. inner diameter and approximately 50 in. long. The pipes were gas-filled and saturated with water from a reservoir at the bottom of the pipe. The experimental work focused on measuring hydrate deposition, and in some cases, plugging, for different water reservoir temperatures (30 to 80 °C), pipe wall temperatures (-10 to 15 °C), and duration (1 to 84 days). The results from measurements provided insights into the dynamic process of hydrate deposition, such as the mechanism for hydrate deposition, plugging, and distribution along the pipe.
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