Integrated Production Model as a Tool for Optimization the Development Strategy of the Sakhalin Oil and Gas Condensate Field

O. Doroshenko, M. Cimic, N. Singh, Yevhen Machuzhak
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Abstract

A fully integrated production model (IPM) has been implemented in the Sakhalin field to optimize hydrocarbons production and carried out effective field development. To achieve our goal in optimizing production, a strategy has been accurately executed to align the surface facilities upgrade with the production forecast. The main challenges to achieving the goal, that we have faced were:All facilities were designed for early production stage in late 1980's, and as the asset outdated the pipeline sizes, routing and compression strategies needs review.Detecting, predicting and reducing liquid loading is required so that the operator can proactively control the hydrocarbon production process.No integrated asset model exists to date. The most significant engineering tasks were solved by creating models of reservoirs, wells and surface network facility, and after history matching and connecting all the elements of the model into a single environment, it has been used for the different production forecast scenarios, taking into account the impact of infrastructure bottlenecks on production of each well. This paper describes in detail methodology applied to calculate optimal well control, wellhead pressure, pressure at the inlet of the booster compressor, as well as for improving surface flowlines capacity. Using the model, we determined the compressor capacity required for the next more than ten years and assessed the impact of pipeline upgrades on oil gas and condensate production. Using optimization algorithms, a realistic scenario was set and used as a basis for maximizing hydrocarbon production. Integrated production model (IPM) and production optimization provided to us several development scenarios to achieve target production at the lowest cost by eliminating infrastructure constraints.
综合生产模型在库页岛凝析油气田开发战略优化中的应用
Sakhalin油田采用了完全集成的生产模式(IPM)来优化油气产量,并进行了有效的油田开发。为了实现优化生产的目标,我们精确地执行了一项策略,使地面设施升级与产量预测保持一致。为了实现这一目标,我们面临的主要挑战是:所有设施都是在20世纪80年代末为早期生产阶段设计的,随着资产的过时,管道尺寸、路线和压缩策略需要重新评估。为了能够主动控制油气生产过程,需要检测、预测和降低液体载荷。到目前为止还没有集成的资产模型。最重要的工程任务是通过创建油藏、井和地面网络设施的模型来解决,然后将模型的所有元素进行历史匹配并连接到一个环境中,将其用于不同的生产预测场景,同时考虑到基础设施瓶颈对每口井生产的影响。本文详细介绍了用于计算最优井控、井口压力、增压压缩机进口压力以及提高地面管线能力的方法。利用该模型,我们确定了未来十多年所需的压缩机容量,并评估了管道升级对油气和凝析油生产的影响。利用优化算法,设置了一个现实的场景,并将其作为最大化油气产量的基础。集成生产模型(IPM)和生产优化为我们提供了几种开发方案,通过消除基础设施限制,以最低成本实现目标生产。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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