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Productivity Index of Horizontal Gas Well

机译：水平气井产能指数

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摘要

One of the most direct techniques to evaluate gas well production capacity is by productivity index (PI). As the application of horizontal wells has significantly increased since 1980s, a number of correlations for predicting the horizontal well PI have been developed by modification of the PI correlations for vertical wells. However, the predicted PI values by different correlations differ significantly. Furthermore, there are no available guidelines for proper application of the various correlations. The objective of this research is to determine the most reliable correlation for horizontal well productivity index in a gas reservoir and identify the key parameters that impact PI of horizontal gas wells.;In order to achieve the objectives, a numerical reservoir model was utilized to determine the productivity index for a horizontal well in a gas reservoir. A parametric study was then conducted to investigate the impact of different reservoir/well parameters including reservoir thickness, lateral length, horizontal permeability, and vertical permeability on PI. The productivity index determined by the simulation model was then compared against the values predicted by different correlations. The results indicate that in all cases the Renard-Dupuy anisotropic correlation will provide the closest value to the model average PI value. Moreover, Kuchuk correlation resulted in the highest value for PI, whereas Babu-Odeh correlation value resulted in the lowest value for PI in all cases.
机译：评估气井产能的最直接技术之一是通过生产率指数（PI）。自1980年代以来，由于水平井的应用已显着增加，因此通过修改垂直井的PI相关性，开发了许多预测水平井PI的相关性。但是，通过不同的相关性预测的PI值显着不同。此外，没有正确应用各种相关性的可用指南。本研究的目的是确定气藏水平井产能指数最可靠的相关性，并确定影响水平气井PI的关键参数。气藏水平井的生产率指数。然后进行了参数研究，以研究不同储层/井参数（包括储层厚度，侧向长度，水平渗透率和垂直渗透率）对PI的影响。然后将模拟模型确定的生产率指数与不同相关性预测的值进行比较。结果表明，在所有情况下，Renard-Dupuy各向异性相关将提供最接近模型平均PI值的值。而且，在所有情况下，Kuchuk相关性导致PI的最大值，而Babu-Odeh相关性值导致PI的最小值。

著录项

  • 作者

    Almuraikhi, Abdullah A.;

  • 作者单位

    West Virginia University.;

  • 授予单位 West Virginia University.;
  • 学科 Petroleum engineering.
  • 学位 M.S.
  • 年度 2017
  • 页码 52 p.
  • 总页数 52
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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