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首页> 外文期刊>Journal of Petroleum Science & Engineering >Design concept for implementation of a novel subsea gas dehydration process for a gas/condensate well
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Design concept for implementation of a novel subsea gas dehydration process for a gas/condensate well

机译：用于气/凝析油井的新型海底天然气脱水工艺实施的设计概念

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Natural Gas usually contains significant quantities of water vapour, which must be removed for gas processing and transmission. Common allowable water content of transmission gas ranges from 4 to 7 pounds per MMSCF (64-112 mg/m~3). Failure to sufficiently reduce the water content can lead to condensation of liquid water and the formation and accumulation of gas hydrates into pipe blocking plugs. This is particularly important for subsea pipelines with the high pressure and low temperatures conditions that exposes the gas to hydrate formation conditions. To meet the demands of deeper and more remote reservoirs, subsea processing has been poised as one of the most potentially promising technology developments in the offshore development. A novel dehydration solution that is applicable for subsea installation has been designed and tested in the laboratories of Clean Gas Technology Australia department of Curtin University. The solution utilises the concepts of gas cooling through expansion and the controlled formation and management of gas hydrates to reduce the water content of a saturated gas stream to levels suitable for gas transport in subsea pipelines. The pilot plant implemented to test the solution design at pressures up to 10 MPa (1469 psi) and flow rates of 35 std m~3/h (30 MSCFD) demonstrated that dehydration performance better than achieved with batch experiments was achievable. This paper describes a design methodology to migrate the process to a subsea implementation and presents a model for a production implementation using the experimentally obtained dehydration performance, demonstrating that it can provide a viable subsea dehydration solution.
机译：天然气通常包含大量的水蒸气，必须将其除去以进行气体处理和传输。传输气体的常见允许水含量范围为每MMSCF 4到7磅（64-112 mg / m〜3）。未能充分降低水含量会导致液态水冷凝以及气体水合物的形成和积累到管道堵塞塞中。这对于具有高压和低温条件的海底管道尤其重要，该条件使气体暴露于水合物形成条件。为了满足更深，更偏远的储层的需求，海底加工已被视为海上开发中最有前途的技术发展之一。一种适用于海底安装的新型脱水解决方案已经在科廷大学澳大利亚清洁气体技术系的实验室中进行了设计和测试。该解决方案利用通过膨胀进行气体冷却以及控制气体水合物的形成和管理的概念，将饱和气流的水含量降低到适合在海底管道中输送气体的水平。用于在高达10 MPa（1469 psi）的压力和35 std m〜3 / h（30 MSCFD）的流速下测试溶液设计的中试工厂证明，脱水性能可达到比分批实验更好的脱水性能。本文介绍了一种将流程迁移到海底实施方案的设计方法，并提供了一种使用实验获得的脱水性能进行生产实施的模型，证明了它可以提供可行的海底脱水解决方案。

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