Multiphase flow in petroleum pipelines became more challenging due to the emergence of deeper wells at extreme environmental conditions. Flow assurance strategies ensure the production of hydrocarbons uninterruptedly. In this work we propose a simple and straightforward framework for design strategies for flow assurance constraints, implementing the most widely used models and correlations available. One-dimensional steady-state conservation equations were used for the modeling through a system of differential-algebraic equations, extending the previous work of Teixeira et al. (Rev IFP Energies Nouvelles 70(3):497–510, 2015) to incorporate flow assurance principles. Design strategies used for flowline internal diameter and insulation layer sizing were aggregated to the process modeling. The proposed modeling approach provided results with great agreement with the standard software used in oil industry (OLGA®) at industrial full-scale flow conditions, therefore providing a simple, robust and accurate tool for flow assurance calculations. Also comparing to OLGA®, the proposed framework presented a much shorter simulation time when more refined pipeline discretization is required. The strategy adopted here proved to be efficient in making initial estimates of production field design, in a faster way.

中文翻译：

---

具有流动保证约束的海上生产线管道设计

由于在极端环境条件下出现更深的井，石油管道中的多相流变得更具挑战性。流动保证策略可确保不间断地生产碳氢化合物。在这项工作中，我们为流动保证约束的设计策略提出了一个简单而直接的框架，实现了最广泛使用的模型和可用的相关性。一维稳态守恒方程用于通过微分代数方程组进行建模，扩展了 Teixeira 等人以前的工作。（Rev IFP Energies Nouvelles 70(3):497–510, 2015）纳入流动保证原则。用于流线内径和绝缘层尺寸的设计策略被汇总到过程建模中。所提出的建模方法在工业全尺寸流动条件下提供的结果与石油工业中使用的标准软件 (OLGA®) 非常一致，因此为流动保证计算提供了一种简单、稳健和准确的工具。同样与 OLGA® 相比，当需要更精细的管道离散化时，所提出的框架提供了更短的仿真时间。事实证明，此处采用的策略在以更快的方式对生产现场设计进行初步估算方面是有效的。