阿曼苏丹国化学提高采收率综合分析与预测方法

Dawood Al Mahrouqi, R. Farajzadeh, A. Alkindi, M. Rifaat
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引用次数: 3

摘要

在阿曼苏丹国南部的Marmul油田,聚合物注入已经实施了十年。最近,碱性表面活性剂聚合物(ASP)技术也在现场进行了试点,由于其显著的增产,在技术上取得了成功。目前该油田的最终策略是在聚合物驱后进行复合驱,以开采聚合物驱后的剩余油,并最大限度地提高最终采收率。这表明有必要利用现有工具对三元复合驱的全油田性能进行评估。全油田动态模型并不总是模拟化学提高采收率性能的最佳工具,主要原因是储层非均质性代表性不足、缺乏补充数据、过程本身的复杂性以及计算时间长。在本文中,我们采用管道模型方法,利用ASP试验的现场生产数据来评估最终的产油量增量。将该方法与基于改进的Koval方法的分析模型进行了比较,该方法将储层非均质性作为输入参数。所得结果用于初步评价聚合物与三元复合注入在全油田的差异。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Integrated Approach for Analysis and Forecasting of Chemical EOR Recoveries in Sultanate of Oman
Polymer injection in the south of Sultanate of Oman has been implemented in Marmul field for the last decade. Recently, alkaline surfactant polymer (ASP) technology has also been piloted in the field, which was technically successful owing to its significant incremental oil production. The current end-game strategy for the field is to follow polymer with ASP flood in order to produce the remaining oil after polymer flood and maximize the ultimate oil recovery factor. This has revealed the need for evaluation of the full-field performance of ASP flood using available tools. Full-field dynamic models are not always best tools for modeling the performance of chemical enhanced oil recovery, primarily due to under-representation of the reservoir heterogeneity, lack of the complementary data, complexity of the process itself, and large computation time. In this paper, we implement a conduit-model approach using field production data from the ASP pilot to assess the ultimate incremental oil recovery. This approach is compared to an analytical model that is based on the modified Koval's method with reservoir heterogeneity as an input parameter. The obtained results are used for preliminary assessment of the difference between polymer and ASP injection in the full field.
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