碳酸盐岩多段酸压水平井线性复合渗流新模型

发布时间：2018-05-20 21:34

本文选题：碳酸盐岩 + 多段酸压水平井　；参考：《断块油气田》2017年02期

【摘要】：碳酸盐岩储层具有独特的孔隙结构,水平井多段酸压后的渗流过程极其复杂,弄清酸压缝的特性参数及与天然缝的沟通情况是单井高效开发的前提。根据碳酸盐岩储层实际地质特征,且充分考虑酸压裂缝呈非等间距、非等半长、非等缝高、非等任意倾角的实际情况,建立线性复合碳酸盐岩多段酸压水平井的渗流模型;利用点源函数理论、Laplace变换、正交变换等数学方法对模型进行求解,编程绘制压力动态特征曲线,揭示线性复合碳酸盐岩多段酸压水平井的渗流规律;同时开展相关参数的敏感性分析。研究成果将为碳酸盐岩储层研究提供新的渗流模型,为水平井酸压后的高效开发奠定理论基础。
[Abstract]:Carbonate reservoir has a unique pore structure and the seepage process after multi-stage acid fracturing in horizontal wells is extremely complex. It is a prerequisite for high efficiency development of single wells to make clear the characteristic parameters of acid fracturing and the communication between acid fracturing and natural fractures. According to the actual geological characteristics of carbonate reservoir and considering the fact that acid fracturing is non-equidistant, non-equal half length, non-equal fracture height, and non-equal arbitrary dip angle, the seepage model of multi-stage acid pressure horizontal well of linear composite carbonate rock is established. The point source function theory such as Laplace transform and orthogonal transformation are used to solve the model, and the dynamic characteristic curve of pressure is programmed to reveal the percolation law of the multi-stage acid pressure horizontal well of linear composite carbonate rock. At the same time, sensitivity analysis of related parameters was carried out. The research results will provide a new percolation model for carbonate reservoir research and lay a theoretical foundation for the high efficiency development of horizontal wells after acid fracturing.
【作者单位】：中国石化西南油气分公司博士后科研工作站;中国石化西南油气分公司勘探开发研究院;
【基金】：国家自然科学青年基金项目“缝洞性碳酸盐岩多段酸压水平井压力动态研究”(51304164)
【分类号】：TE357.2

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