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A comprehensive skin factor model for well completions based on finite element simulations.

机译：基于有限元模拟的完井完备的综合表皮因子模型。

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摘要

The additional pressure drop caused by the well completion can strongly affect the overall well performance in production and/or injection wells. Particularly in horizontal wells, where the reservoir pressure drop is low, any pressure drop through the completion can be critical. A comprehensive completion model is developed to describe the pressure and flow rate relationship (inflow performance) for different types of completions, focusing on behavior in horizontal laterals. The completion types include slotted liners, cased/perforated completions, screens, gravel packs, and pre-packed screens. Because of the complex flow geometry in the near wellbore region, finite element modeling is the most efficient means of simulating the completion inflow performance. A 2-D and 3-D finite element simulator is developed to estimate the inflow performance. The study also considers the effect of scale (precipitated solids) on the performance of screens or slotted liners and the effect of damage on a gravel pack. Based on the simulation results, semi-analytical completion inflow models are derived as skin factor models so that they can be easily coupled with reservoir inflow models. It is expected that in most cases, this will be a rate-dependent skin factor, similar to the way non-Darcy flow is represented in reservoir inflow models.
机译：完井导致的额外压降会严重影响生产井和/或注入井的整体井性能。特别是在水平井中，油藏的压降低，整个完井过程中的任何压降都是至关重要的。建立了一个完备的完井模型，以描述不同类型完井的压力和流量关系（流入性能），重点是水平井的行为。完井类型包括开槽衬管，盒装/穿孔完井，筛网，砾石充填和预装筛网。由于井眼附近区域的流动几何形状复杂，因此有限元建模是模拟完井流入性能的最有效方法。开发了2-D和3-D有限元模拟器来估计流入性能。该研究还考虑了结垢（沉淀的固体）对筛网或开槽衬板性能的影响以及对砾石充填的破坏作用。根据模拟结果，得出半分析完井入流模型作为表皮因子模型，因此可以轻松地与储层入流模型耦合。预计在大多数情况下，这将是速率相关的趋肤因子，类似于在储层流入模型中表示非达西流动的方式。

著录项

  • 作者

    Furui, Kenji.;

  • 作者单位

    The University of Texas at Austin.;

  • 授予单位 The University of Texas at Austin.;
  • 学科 Engineering Petroleum.
  • 学位 Ph.D.
  • 年度 2004
  • 页码 182 p.
  • 总页数 182
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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