A hybrid numerical/analytical model of a finite-conductivity vertical fracture intercepted by a horizontal well
A hybrid numerical/analytical model of a finite-conductivity vertical fracture intercepted by a horizontal well
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DOI：
10.2118/92040-pa
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发表时间：
2006-08-01
影响因子：
2.1
通讯作者：
Kazemi, H.
中科院分区：
文献类型：
--
作者：
Al-Kobaisi, M.;Ozkan, E.;Kazemi, H.
本文提出了水平井拦截的有限导流能力裂缝的压力瞬变响应的混合数值/分析模型。该模型将数值裂缝模型与分析储层模型动态耦合。这种方法使我们能够包括更精细的断裂特征的细节，同时保持计算工作可管理。例如，裂缝可能具有不规则的形状，不均匀的宽度，和可变的导流能力，以及井可能不相交于裂缝的几何中心。在本文中，我们使用混合模型来研究裂缝属性对单个有限导流水平井裂缝的压力-瞬态特性的影响。单水平井裂缝模型通过叠加可以推广到多裂缝水平威尔斯井。该模型还可用于计算非理想裂缝几何形状、可变导流能力和井筒周围流动阻塞效应引起的拟表皮，以及研究裂缝特性对水平威尔斯动态的影响。
This paper presents a hybrid numerical/analytical model for the pressure-transient response of a finite-conductivity fracture intercepted by a horizontal well. The model dynamically couples a numerical fracture model with an analytical reservoir model. This approach allows us to include finer details of the fracture characteristics while keeping the computational work manageable. For example, the fracture may have irregular shape, nonuniform width, and variable conductivity, and the well may not intersect the fracture at its geometric center.In this paper, we use the hybrid model to investigate the effects of fracture properties on the pressure-transient characteristics of a single, finite-conductivity horizontal-well fracture. The single horizontal-well-fracture model can be extended easily to multiply fractured horizontal wells by superposition. The model also can be used to compute the pseudoskin caused by the effects of nonideat fracture geometry, variable conductivity, and flow choking around the wellbore and to investigate the influence of fracture properties on the performance of horizontal wells.