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首页> 外文期刊>Journal of natural gas science and engineering >Application of the unstructured grids in the numerical simulation of fractured horizontal wells in ultra-low permeability gas reservoirs
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Application of the unstructured grids in the numerical simulation of fractured horizontal wells in ultra-low permeability gas reservoirs

机译：非结构网格在超低渗透气藏水平井压裂数值模拟中的应用

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Given the impermeable lithological boundary problem of the Sulige Gas Field in China, this study validates the dynamic characteristics of this reservoir through a radial model of the vertical well and proposes an unstructured grid refinement technology using a perpendicular bisector, while considering the horizontal well fracturing model. The vertical fractures and impermeable lithological boundary around the horizontal well can be accurately simulated using the unstructured grid refinement technology. This study also investigates the influence of stress sensitivity on the development indices of an ultra-low permeability gas reservoir. Results show that an impermeable lithological boundary in a horizontal well can effectively decrease the production rate of the working system of intermittent open wells. For ultra-low permeability gas reservoir with different stress sensitivities, important aspects, such as stabilization period, economic benefits, and ultimate recovery, should be considered in the early production allocation of gas wells. (C) 2015 Elsevier B.V. All rights reserved.
机译：鉴于中国苏里格气田的不可渗透岩性边界问题，本研究通过垂直井的径向模型验证了该油藏的动态特征，并在考虑水平井压裂模型的同时，提出了使用垂直平分线的非结构网格细化技术。 。使用非结构网格细化技术可以精确模拟水平井周围的垂直裂缝和不可渗透的岩性边界。本研究还研究了应力敏感性对超低渗透气藏开发指标的影响。结果表明，水平井中不可渗透的岩性边界可以有效降低间歇性裸眼井作业系统的生产率。对于具有不同应力敏感性的超低渗透性气藏，在气井的早期生产分配中应考虑重要方面，如稳定期，经济效益和最终采收率。 （C）2015 Elsevier B.V.保留所有权利。

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