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首页> 外文期刊>Journal of applied mathematics >Reservoir Characterization during Underbalanced Drilling of Horizontal Wells Based on Real-Time Data Monitoring
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Reservoir Characterization during Underbalanced Drilling of Horizontal Wells Based on Real-Time Data Monitoring

机译：基于实时数据监测的水平井欠平衡钻井过程中的储层特征

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In this work, a methodology for characterizing reservoir pore pressure and permeability during underbalanced drilling of horizontal wells was presented. The methodology utilizes a transient multiphase wellbore flow model that is extended with a transient well influx analytical model during underbalanced drilling of horizontal wells. The effects of the density behavior of drilling fluid and wellbore heat transfer are considered in our wellbore flow model. Based on Kneissl’s methodology, an improved method with a different testing procedure was used to estimate the reservoir pore pressure by introducing fluctuations in the bottom hole pressure. To acquire timely basic data for reservoir characterization, a dedicated fully automated control real-time data monitoring system was established. The methodology is applied to a realistic case, and the results indicate that the estimated reservoir pore pressure and permeability fit well to the truth values from well test after drilling. The results also show that the real-time data monitoring system is operational and can provide accurate and complete data set in real time for reservoir characterization. The methodology can handle reservoir characterization during underbalanced drilling of horizontal wells.
机译：在这项工作中，提出了一种在水平井欠平衡钻井过程中表征储层孔隙压力和渗透率的方法。该方法利用了瞬态多相井眼流动模型，该模型在水平井欠平衡钻井过程中扩展了瞬态井涌分析模型。在我们的井筒流动模型中考虑了钻井液的密度特性和井筒热传递的影响。根据Kneissl的方法，通过引入井底压力波动，使用一种经过改进的方法和不同的测试程序来估算储层孔隙压力。为了及时获取用于储层表征的基本数据，建立了专用的全自动控制实时数据监控系统。将该方法应用于实际情况，结果表明，估计的储层孔隙压力和渗透率与钻井后试井的真实值非常吻合。结果还表明，该实时数据监控系统是可操作的，并且可以实时提供准确而完整的数据集以用于储层表征。该方法可以处理水平井欠平衡钻井过程中的储层表征。

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